Remerge to jdk8-b117

author: Edward Nevill edward.nevill@linaro.org <Edward Nevill edward.nevill@linaro.org> 2013-12-23 13:00:33 +0000
committer: Edward Nevill edward.nevill@linaro.org <Edward Nevill edward.nevill@linaro.org> 2013-12-23 13:00:33 +0000
commit: d9c7bed615253d4d273f81faf9859f8f10f7cac9 (patch)
tree: 6917c0df28cda99c2bc4d23239045fa29a3f4858
parent: db1032c1f2e2b6e679849ae4c8b0e7dd7605fc53 (diff)
parent: 7f54e85e6d7f3767c4ad17e5e336f0562657435d (diff)
217 files changed, 6257 insertions, 2167 deletions
diff --git a/.hgtags b/.hgtags
index fd0c55be..56239d92 100644
--- a/.hgtags
+++ b/.hgtags
@@ -222,3 +222,10 @@ f35e1255024b66f7cf82517798f45f6e194e5567 jdk8-b107
 6ec2f9e5ed5bd60c2900976e6a54fdcac2f37e9e jdk8-b109
 4d291109480a3f99d18ef98398479a245f68ebf2 preview_rc1
 b35e0d2e2a246475b6ca01820e20fda98c72fde6 preview_rc2
+d49a8c2173f5f90c9a39cc4af8e03cfa8f35ee4c jdk8-b110
+75fd3486e584f20475c064a2cd4d01ac6406a511 jdk8-b111
+6a4fdb3bb4e34af4c5bb8db467bb01e13b1a7e31 jdk8-b112
+676cd7bf5e092356f7ee2116c8cf88cdc12377c7 jdk8-b113
+79f7b79bf97b71c9b5c9b103dbdef5f269eeb86d jdk8-b114
+f0d3ac2474ee755b1180ec71bcdfa190845b17eb jdk8-b115
+0fb1a427fbf6e04c77cebbbf99b6631c664ed793 jdk8-b116
diff --git a/make/build.xml b/make/build.xml
index 4bc1a398..7d1f42ae 100644
--- a/make/build.xml
+++ b/make/build.xml
@@ -46,6 +46,16 @@
     <available property="asm.available" classname="jdk.internal.org.objectweb.asm.Type"/>
     <!-- check if testng.jar is avaiable -->
     <available property="testng.available" file="${file.reference.testng.jar}"/>
+    <!-- check if Jemmy ang testng.jar are avaiable -->
+    <condition property="jemmy.jfx.testng.available" value="true">
+      <and> 
+        <available file="${file.reference.jemmyfx.jar}"/>
+        <available file="${file.reference.jemmycore.jar}"/>
+        <available file="${file.reference.jemmyawtinput.jar}"/>
+        <available file="${file.reference.jfxrt.jar}"/>
+        <isset property="testng.available"/>
+      </and>
+    </condition>
 
     <!-- enable/disable make code coverage -->
     <condition property="cc.enabled">
@@ -236,6 +246,10 @@
        <fileset dir="${test.src.dir}/META-INF/services/"/>
     </copy>
 
+    <copy todir="${build.test.classes.dir}/jdk/nashorn/internal/runtime/resources">
+       <fileset dir="${test.src.dir}/jdk/nashorn/internal/runtime/resources"/>
+    </copy>
+
     <!-- tests that check nashorn internals and internal API -->
     <jar jarfile="${nashorn.internal.tests.jar}">
       <fileset dir="${build.test.classes.dir}" excludes="**/api/**"/>
@@ -245,6 +259,7 @@
     <jar jarfile="${nashorn.api.tests.jar}">
       <fileset dir="${build.test.classes.dir}" includes="**/api/**"/>
       <fileset dir="${build.test.classes.dir}" includes="**/META-INF/**"/>
+      <fileset dir="${build.test.classes.dir}" includes="**/resources/*.js"/>
     </jar>
 
   </target>
@@ -346,6 +361,38 @@ grant codeBase "file:/${basedir}/test/script/basic/classloader.js" {
       </java>
   </target>
 
+  <target name="check-jemmy.jfx.testng" unless="jemmy.jfx.testng.available">
+    <echo message="WARNING: Jemmy or JavaFX or TestNG not available, will not run tests. Please copy testng.jar, JemmyCore.jar, JemmyFX.jar, JemmyAWTInput.jar under test${file.separator}lib directory. And make sure you have jfxrt.jar in ${java.home}${file.separator}lib${file.separator}ext dir."/>
+  </target>
+
+  <target name="testjfx" depends="jar, check-jemmy.jfx.testng, compile-test" if="jemmy.jfx.testng.available">
+    <fileset id="test.classes" dir="${build.test.classes.dir}">
+       <include name="**/framework/*Test.class"/>
+    </fileset>
+    
+    <copy file="${file.reference.jfxrt.jar}" todir="dist"/>
+    
+    <condition property="jfx.prism.order" value="-Dprism.order=j2d" else=" ">
+		<not>
+            <os family="mac"/>
+        </not>
+	</condition>
+    
+    <testng outputdir="${build.test.results.dir}" classfilesetref="test.classes"
+       verbose="${testng.verbose}" haltonfailure="true" useDefaultListeners="false" listeners="${testng.listeners}" workingDir="${basedir}">
+      <jvmarg line="${ext.class.path}"/>
+      <jvmarg line="${run.test.jvmargs} -Xmx${run.test.xmx}"/>
+      <propertyset>
+        <propertyref prefix="testjfx-test-sys-prop."/>
+        <mapper from="testjfx-test-sys-prop.*" to="*" type="glob"/>
+      </propertyset>
+      <sysproperty key="test.fork.jvm.options" value="${testjfx-test-sys-prop.test.fork.jvm.options} ${jfx.prism.order}"/>
+      <classpath>
+          <pathelement path="${testjfx.run.test.classpath}"/>
+      </classpath>
+    </testng>
+  </target>
+  
   <target name="test262" depends="jar, check-testng, check-external-tests, compile-test, generate-policy-file" if="testng.available">
     <fileset id="test.classes" dir="${build.test.classes.dir}">
        <include name="**/framework/*Test.class"/>
diff --git a/make/java.security.override b/make/java.security.override
deleted file mode 100644
index a7edf33b..00000000
--- a/make/java.security.override
+++ /dev/null
@@ -1,14 +0,0 @@
-# We would like to avoid references from anywhere outside nashorn
-# to codegen, IR and parser packages, in particular script generated classes.
-# We ensure that by overriding "package.access" security property.
-
-# The following "package.access" value was copied from  default java.security 
-# of jre/lib/security and appended with nashorn sensitive packages.
-
-#
-# List of comma-separated packages that start with or equal this string
-# will cause a security exception to be thrown when
-# passed to checkPackageAccess unless the
-# corresponding RuntimePermission ("accessClassInPackage."+package) has
-# been granted.
-package.access=sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.org.glassfish.external.,com.sun.org.glassfish.gmbal.,jdk.internal.,jdk.nashorn.internal.,jdk.nashorn.tools.
diff --git a/make/project.properties b/make/project.properties
index e6eea02e..c3ffca4e 100644
--- a/make/project.properties
+++ b/make/project.properties
@@ -118,6 +118,7 @@ test.trusted.dir=test/script/trusted
 test.external.dir=test/script/external
 test262.dir=${test.external.dir}/test262
 test262.suite.dir=${test262.dir}/test/suite
+testjfx.dir=${test.script.dir}/jfx
 
 test-sys-prop.test.dir=${test.dir}
 test-sys-prop.test.js.roots=${test.basic.dir} ${test.error.dir} ${test.sandbox.dir} ${test.trusted.dir}
@@ -208,6 +209,32 @@ test262-test-sys-prop.test.js.framework=\
     ${test262.dir}/test/harness/framework.js \
     ${test262.dir}/test/harness/sta.js
 
+# testjfx test root
+testjfx-test-sys-prop.test.js.roots=${testjfx.dir}   
+
+# execute testjfx tests in shared nashorn context or not?
+testjfx-test-sys-prop.test.js.shared.context=false
+
+# framework root for our script tests
+testjfx-test-sys-prop.test.js.framework=\
+    -fx \
+    ${test.script.dir}${file.separator}jfx.js
+
+file.reference.jemmyfx.jar=test${file.separator}lib${file.separator}JemmyFX.jar
+file.reference.jemmycore.jar=test${file.separator}lib${file.separator}JemmyCore.jar
+file.reference.jemmyawtinput.jar=test${file.separator}lib${file.separator}JemmyAWTInput.jar
+file.reference.jfxrt.jar=${java.home}${file.separator}lib${file.separator}ext${file.separator}jfxrt.jar
+testjfx.run.test.classpath=\
+    ${file.reference.jemmyfx.jar}${path.separator}\
+    ${file.reference.jemmycore.jar}${path.separator}\
+    ${file.reference.jemmyawtinput.jar}${path.separator}\
+    ${file.reference.testng.jar}${path.separator}\
+    ${nashorn.internal.tests.jar}${path.separator}\
+    ${nashorn.api.tests.jar}
+
+# testjfx VM options for script tests with @fork option
+testjfx-test-sys-prop.test.fork.jvm.options=${run.test.jvmargs.main} -Xmx${run.test.xmx} -cp ${testjfx.run.test.classpath}
+
 run.test.classpath=\
     ${file.reference.testng.jar}:\
     ${nashorn.internal.tests.jar}:\
@@ -234,7 +261,7 @@ run.test.jvmargs.main=${run.test.jvmargs.common} -ea
 #-XX:-UseCompressedKlassPointers -XX:+PrintHeapAtGC -XX:ClassMetaspaceSize=300M  
 run.test.jvmargs.octane.main=${run.test.jvmargs.common}
 
-run.test.jvmsecurityargs=-Xverify:all -Djava.security.properties=${basedir}/make/java.security.override -Djava.security.manager -Djava.security.policy=${basedir}/build/nashorn.policy
+run.test.jvmsecurityargs=-Xverify:all -Djava.security.manager -Djava.security.policy=${basedir}/build/nashorn.policy
 
 # VM options for script tests with @fork option
 test-sys-prop.test.fork.jvm.options=${run.test.jvmargs.main} -Xmx${run.test.xmx} ${run.test.jvmsecurityargs}
diff --git a/makefiles/BuildNashorn.gmk b/makefiles/BuildNashorn.gmk
index 96bedf44..fc870442 100644
--- a/makefiles/BuildNashorn.gmk
+++ b/makefiles/BuildNashorn.gmk
@@ -37,35 +37,35 @@ NASHORN_VERSION := $(JDK_VERSION)
 NASHORN_FULL_VERSION := $(FULL_VERSION)
 
 ifdef MILESTONE
-  ifeq ($(MILESTONE),internal)
+  ifeq ($(MILESTONE), internal)
     NASHORN_VERSION = $(FULL_VERSION)
   endif
 endif
 
 # Need to use source and target 7 for nasgen to work.
-$(eval $(call SetupJavaCompiler,GENERATE_NEWBYTECODE_DEBUG,\
-    JVM:=$(JAVA),\
-    JAVAC:=$(NEW_JAVAC),\
-    FLAGS:=-g -source 7 -target 7 -bootclasspath $(JDK_CLASSES),\
-    SERVER_DIR:=$(SJAVAC_SERVER_DIR),\
-    SERVER_JVM:=$(SJAVAC_SERVER_JAVA)))
+$(eval $(call SetupJavaCompiler,GENERATE_NEWBYTECODE_DEBUG, \
+    JVM := $(JAVA), \
+    JAVAC := $(NEW_JAVAC), \
+    FLAGS := -g -source 7 -target 7 -bootclasspath $(JDK_CLASSES), \
+    SERVER_DIR := $(SJAVAC_SERVER_DIR), \
+    SERVER_JVM := $(SJAVAC_SERVER_JAVA)))
 
 # Build nashorn into intermediate directory
-$(eval $(call SetupJavaCompilation,BUILD_NASHORN,\
-    SETUP:=GENERATE_NEWBYTECODE_DEBUG,\
-    SRC:=$(NASHORN_TOPDIR)/src,\
-    COPY:=.properties .js,\
-    BIN:=$(NASHORN_OUTPUTDIR)/nashorn_classes))
+$(eval $(call SetupJavaCompilation,BUILD_NASHORN, \
+    SETUP := GENERATE_NEWBYTECODE_DEBUG, \
+    SRC := $(NASHORN_TOPDIR)/src, \
+    COPY := .properties .js, \
+    BIN := $(NASHORN_OUTPUTDIR)/nashorn_classes))
 
 NASGEN_SRC := $(NASHORN_TOPDIR)/buildtools/nasgen/src
 ASM_SRC := $(JDK_TOPDIR)/src/share/classes/jdk/internal/org/objectweb/asm
 
 # Build nasgen
-$(eval $(call SetupJavaCompilation,BUILD_NASGEN,\
-    SETUP:=GENERATE_NEWBYTECODE_DEBUG,\
-    SRC:=$(NASGEN_SRC) $(ASM_SRC), \
-    BIN:=$(NASHORN_OUTPUTDIR)/nasgen_classes,\
-    ADD_JAVAC_FLAGS:=-cp $(NASHORN_OUTPUTDIR)/nashorn_classes))
+$(eval $(call SetupJavaCompilation,BUILD_NASGEN, \
+    SETUP := GENERATE_NEWBYTECODE_DEBUG, \
+    SRC := $(NASGEN_SRC) $(ASM_SRC), \
+    BIN := $(NASHORN_OUTPUTDIR)/nasgen_classes, \
+    ADD_JAVAC_FLAGS := -cp $(NASHORN_OUTPUTDIR)/nashorn_classes))
 
 # Nasgen needs nashorn classes
 $(BUILD_NASGEN): $(BUILD_NASHORN)
@@ -77,35 +77,36 @@ $(NASHORN_OUTPUTDIR)/classes/_the.nasgen.run: $(BUILD_NASGEN)
 	$(RM) -rf $(@D)/jdk $(@D)/netscape
 	$(CP) -R -p $(NASHORN_OUTPUTDIR)/nashorn_classes/* $(@D)/
 	$(FIXPATH) $(JAVA) \
-		-cp "$(NASHORN_OUTPUTDIR)/nasgen_classes$(PATH_SEP)$(NASHORN_OUTPUTDIR)/nashorn_classes" \
-		jdk.nashorn.internal.tools.nasgen.Main $(@D) jdk.nashorn.internal.objects $(@D)
+	    -cp "$(NASHORN_OUTPUTDIR)/nasgen_classes$(PATH_SEP)$(NASHORN_OUTPUTDIR)/nashorn_classes" \
+	    jdk.nashorn.internal.tools.nasgen.Main $(@D) jdk.nashorn.internal.objects $(@D)
 	$(TOUCH) $@
 
 # Version file needs to be processed with version numbers
 VERSION_FILE := $(NASHORN_OUTPUTDIR)/classes/jdk/nashorn/internal/runtime/resources/version.properties
+
 # Needs to happen after nasgen run since nasgen run deletes it
 $(VERSION_FILE): $(NASHORN_OUTPUTDIR)/classes/_the.nasgen.run
 $(VERSION_FILE): $(NASHORN_TOPDIR)/src/jdk/nashorn/internal/runtime/resources/version.properties-template
 	$(ECHO) Creating version.properties
 	$(MKDIR) -p $(@D)
 	$(CAT) $< | $(SED) -e 's/$$(FULL_VERSION)/$(NASHORN_FULL_VERSION)/g' \
-		-e 's/$$(RELEASE)/$(NASHORN_VERSION)/g' \
-		-e '/^#.*$$/d' -e '/^$$/d'  > $@
+	    -e 's/$$(RELEASE)/$(NASHORN_VERSION)/g' \
+	    -e '/^#.*$$/d' -e '/^$$/d'  > $@
 
 
-MANIFEST_ATTRIBUTES:=Name: jdk/nashorn/\nImplementation-Title: Oracle Nashorn\nImplementation-Version: $(NASHORN_FULL_VERSION)
+MANIFEST_ATTRIBUTES := Name: jdk/nashorn/\nImplementation-Title: Oracle Nashorn\nImplementation-Version: $(NASHORN_FULL_VERSION)
 
 # Create nashorn.jar from the final classes dir
-$(eval $(call SetupArchive,BUILD_NASHORN_JAR,\
+$(eval $(call SetupArchive,BUILD_NASHORN_JAR, \
     $(NASHORN_OUTPUTDIR)/classes/_the.nasgen.run \
-    $(VERSION_FILE),\
-    SRCS:=$(NASHORN_OUTPUTDIR)/classes,\
-    SUFFIXES:=.class .js .properties Factory,\
-    MANIFEST:=$(NASHORN_TOPDIR)/src/META-INF/MANIFEST.MF,\
-    EXTRA_MANIFEST_ATTR:=$(MANIFEST_ATTRIBUTES),\
-    SKIP_METAINF:=true,\
-    JAR:=$(NASHORN_JAR)))
+    $(VERSION_FILE), \
+    SRCS := $(NASHORN_OUTPUTDIR)/classes, \
+    SUFFIXES := .class .js .properties Factory, \
+    MANIFEST := $(NASHORN_TOPDIR)/src/META-INF/MANIFEST.MF, \
+    EXTRA_MANIFEST_ATTR := $(MANIFEST_ATTRIBUTES), \
+    SKIP_METAINF := true, \
+    JAR := $(NASHORN_JAR)))
 
 all: $(NASHORN_JAR)
-    
+
 .PHONY: all
diff --git a/makefiles/Makefile b/makefiles/Makefile
index 9539fe0e..c7d0dd00 100644
--- a/makefiles/Makefile
+++ b/makefiles/Makefile
@@ -24,19 +24,19 @@
 #
 
 # Locate this Makefile
-ifeq ($(filter /%,$(lastword $(MAKEFILE_LIST))),)
-    makefile_path:=$(CURDIR)/$(lastword $(MAKEFILE_LIST))
+ifeq ($(filter /%, $(lastword $(MAKEFILE_LIST))), )
+  makefile_path := $(CURDIR)/$(lastword $(MAKEFILE_LIST))
 else
-    makefile_path:=$(lastword $(MAKEFILE_LIST))
+  makefile_path := $(lastword $(MAKEFILE_LIST))
 endif
-repo_dir:=$(patsubst %/makefiles/Makefile,%,$(makefile_path))
+repo_dir := $(patsubst %/makefiles/Makefile, %, $(makefile_path))
 
 # What is the name of this subsystem (langtools, corba, etc)?
-subsystem_name:=$(notdir $(repo_dir))
+subsystem_name := $(notdir $(repo_dir))
 
 # Try to locate top-level makefile
-top_level_makefile:=$(repo_dir)/../common/makefiles/Makefile
-ifneq ($(wildcard $(top_level_makefile)),)
+top_level_makefile := $(repo_dir)/../common/makefiles/Makefile
+ifneq ($(wildcard $(top_level_makefile)), )
   $(info Will run $(subsystem_name) target on top-level Makefile)
   $(info WARNING: This is a non-recommended way of building!)
   $(info ===================================================)
diff --git a/src/jdk/internal/dynalink/beans/SingleDynamicMethod.java b/src/jdk/internal/dynalink/beans/SingleDynamicMethod.java
index d15fab99..6b55d81f 100644
--- a/src/jdk/internal/dynalink/beans/SingleDynamicMethod.java
+++ b/src/jdk/internal/dynalink/beans/SingleDynamicMethod.java
@@ -91,6 +91,7 @@ import java.util.StringTokenizer;
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.linker.LinkerServices;
 import jdk.internal.dynalink.support.Guards;
+import jdk.internal.dynalink.support.Lookup;
 
 /**
  * Base class for dynamic methods that dispatch to a single target Java method or constructor. Handles adaptation of the
@@ -100,6 +101,9 @@ import jdk.internal.dynalink.support.Guards;
  * @version $Id: $
  */
 abstract class SingleDynamicMethod extends DynamicMethod {
+
+    private static final MethodHandle CAN_CONVERT_TO = Lookup.findOwnStatic(MethodHandles.lookup(), "canConvertTo", boolean.class, LinkerServices.class, Class.class, Object.class);
+
     SingleDynamicMethod(String name) {
         super(name);
     }
@@ -201,23 +205,69 @@ abstract class SingleDynamicMethod extends DynamicMethod {
                 return createConvertingInvocation(target, linkerServices, callSiteType).asVarargsCollector(
                         callSiteLastArgType);
             }
-            if(!linkerServices.canConvert(callSiteLastArgType, varArgType)) {
-                // Call site signature guarantees the argument can definitely not be an array (i.e. it is primitive);
-                // link immediately to a vararg-packing method handle.
-                return createConvertingInvocation(collectArguments(fixTarget, argsLen), linkerServices, callSiteType);
+
+            // This method handle takes the single argument and packs it into a newly allocated single-element array. It
+            // will be used when the incoming argument can't be converted to the vararg array type (the "vararg packer"
+            // method).
+            final MethodHandle varArgCollectingInvocation = createConvertingInvocation(collectArguments(fixTarget,
+                    argsLen), linkerServices, callSiteType);
+
+            // Is call site type assignable from an array type (e.g. Object:int[], or Object[]:String[])
+            final boolean isAssignableFromArray = callSiteLastArgType.isAssignableFrom(varArgType);
+            // Do we have a custom conversion that can potentially convert the call site type to an array?
+            final boolean isCustomConvertible = linkerServices.canConvert(callSiteLastArgType, varArgType);
+            if(!isAssignableFromArray && !isCustomConvertible) {
+                // Call site signature guarantees the argument can definitely not be converted to an array (i.e. it is
+                // primitive), and no conversion can help with it either. Link immediately to a vararg-packing method
+                // handle.
+                return varArgCollectingInvocation;
             }
-            // Call site signature makes no guarantees that the single argument in the vararg position will be
-            // compatible across all invocations. Need to insert an appropriate guard and fall back to generic vararg
-            // method when it is not.
-            return MethodHandles.guardWithTest(Guards.isInstance(varArgType, fixParamsLen, callSiteType),
-                    createConvertingInvocation(fixTarget, linkerServices, callSiteType),
-                    createConvertingInvocation(collectArguments(fixTarget, argsLen), linkerServices, callSiteType));
+
+            // This method handle employs language-specific conversions to convert the last argument into an array of
+            // vararg type.
+            final MethodHandle arrayConvertingInvocation = createConvertingInvocation(MethodHandles.filterArguments(
+                    fixTarget, fixParamsLen, linkerServices.getTypeConverter(callSiteLastArgType, varArgType)),
+                    linkerServices, callSiteType);
+
+            // This method handle determines whether the value can be converted to the array of vararg type using a
+            // language-specific conversion.
+            final MethodHandle canConvertArgToArray = MethodHandles.insertArguments(CAN_CONVERT_TO, 0, linkerServices,
+                    varArgType);
+
+            // This one adjusts the previous one for the location of the argument and the call site type.
+            final MethodHandle canConvertLastArgToArray = MethodHandles.dropArguments(canConvertArgToArray, 0,
+                    MethodType.genericMethodType(fixParamsLen).parameterList()).asType(callSiteType.changeReturnType(boolean.class));
+
+            // This one takes the previous ones and combines them into a method handle that converts the argument into
+            // a vararg array when it can, otherwise falls back to the vararg packer.
+            final MethodHandle convertToArrayWhenPossible = MethodHandles.guardWithTest(canConvertLastArgToArray,
+                    arrayConvertingInvocation, varArgCollectingInvocation);
+
+            if(isAssignableFromArray) {
+                return MethodHandles.guardWithTest(
+                        // Is incoming parameter already a compatible array?
+                        Guards.isInstance(varArgType, fixParamsLen, callSiteType),
+                        // Yes: just pass it to the method
+                        createConvertingInvocation(fixTarget, linkerServices, callSiteType),
+                        // No: either go through a custom conversion, or if it is not possible, go directly to the
+                        // vararg packer.
+                        isCustomConvertible ? convertToArrayWhenPossible : varArgCollectingInvocation);
+            }
+
+            // Just do the custom conversion with fallback to the vararg packer logic.
+            assert isCustomConvertible;
+            return convertToArrayWhenPossible;
         }
 
         // Remaining case: more than one vararg.
         return createConvertingInvocation(collectArguments(fixTarget, argsLen), linkerServices, callSiteType);
     }
 
+    @SuppressWarnings("unused")
+    private static boolean canConvertTo(final LinkerServices linkerServices, Class<?> to, Object obj) {
+        return obj == null ? false : linkerServices.canConvert(obj.getClass(), to);
+    }
+
     /**
      * Creates a method handle out of the original target that will collect the varargs for the exact component type of
      * the varArg array. Note that this will nicely trigger language-specific type converters for exactly those varargs
diff --git a/src/jdk/internal/dynalink/support/Guards.java b/src/jdk/internal/dynalink/support/Guards.java
index 661cf334..42aa6758 100644
--- a/src/jdk/internal/dynalink/support/Guards.java
+++ b/src/jdk/internal/dynalink/support/Guards.java
@@ -88,6 +88,7 @@ import java.lang.invoke.MethodHandles;
 import java.lang.invoke.MethodType;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import jdk.internal.dynalink.DynamicLinker;
 import jdk.internal.dynalink.linker.LinkerServices;
 
 /**
@@ -115,11 +116,11 @@ public class Guards {
     public static MethodHandle isOfClass(Class<?> clazz, MethodType type) {
         final Class<?> declaredType = type.parameterType(0);
         if(clazz == declaredType) {
-            LOG.log(Level.WARNING, "isOfClassGuardAlwaysTrue", new Object[] { clazz.getName(), 0, type });
+            LOG.log(Level.WARNING, "isOfClassGuardAlwaysTrue", new Object[] { clazz.getName(), 0, type, DynamicLinker.getLinkedCallSiteLocation() });
             return constantTrue(type);
         }
         if(!declaredType.isAssignableFrom(clazz)) {
-            LOG.log(Level.WARNING, "isOfClassGuardAlwaysFalse", new Object[] { clazz.getName(), 0, type });
+            LOG.log(Level.WARNING, "isOfClassGuardAlwaysFalse", new Object[] { clazz.getName(), 0, type, DynamicLinker.getLinkedCallSiteLocation() });
             return constantFalse(type);
         }
         return getClassBoundArgumentTest(IS_OF_CLASS, clazz, 0, type);
@@ -152,11 +153,11 @@ public class Guards {
     public static MethodHandle isInstance(Class<?> clazz, int pos, MethodType type) {
         final Class<?> declaredType = type.parameterType(pos);
         if(clazz.isAssignableFrom(declaredType)) {
-            LOG.log(Level.WARNING, "isInstanceGuardAlwaysTrue", new Object[] { clazz.getName(), pos, type });
+            LOG.log(Level.WARNING, "isInstanceGuardAlwaysTrue", new Object[] { clazz.getName(), pos, type, DynamicLinker.getLinkedCallSiteLocation() });
             return constantTrue(type);
         }
         if(!declaredType.isAssignableFrom(clazz)) {
-            LOG.log(Level.WARNING, "isInstanceGuardAlwaysFalse", new Object[] { clazz.getName(), pos, type });
+            LOG.log(Level.WARNING, "isInstanceGuardAlwaysFalse", new Object[] { clazz.getName(), pos, type, DynamicLinker.getLinkedCallSiteLocation() });
             return constantFalse(type);
         }
         return getClassBoundArgumentTest(IS_INSTANCE, clazz, pos, type);
@@ -174,11 +175,11 @@ public class Guards {
     public static MethodHandle isArray(int pos, MethodType type) {
         final Class<?> declaredType = type.parameterType(pos);
         if(declaredType.isArray()) {
-            LOG.log(Level.WARNING, "isArrayGuardAlwaysTrue", new Object[] { pos, type });
+            LOG.log(Level.WARNING, "isArrayGuardAlwaysTrue", new Object[] { pos, type, DynamicLinker.getLinkedCallSiteLocation() });
             return constantTrue(type);
         }
         if(!declaredType.isAssignableFrom(Object[].class)) {
-            LOG.log(Level.WARNING, "isArrayGuardAlwaysFalse", new Object[] { pos, type });
+            LOG.log(Level.WARNING, "isArrayGuardAlwaysFalse", new Object[] { pos, type, DynamicLinker.getLinkedCallSiteLocation() });
             return constantFalse(type);
         }
         return asType(IS_ARRAY, pos, type);
diff --git a/src/jdk/internal/dynalink/support/messages.properties b/src/jdk/internal/dynalink/support/messages.properties
index eaf1f630..88d59908 100644
--- a/src/jdk/internal/dynalink/support/messages.properties
+++ b/src/jdk/internal/dynalink/support/messages.properties
@@ -76,11 +76,11 @@
 #      OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 #      ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-isInstanceGuardAlwaysTrue=isInstance guard for {0} in position {1} in method type {2} will always return true
-isInstanceGuardAlwaysFalse=isInstance guard for {0} in position {1} in method type {2} will always return false
+isInstanceGuardAlwaysTrue=isInstance guard for {0} in position {1} in method type {2} at {3} will always return true
+isInstanceGuardAlwaysFalse=isInstance guard for {0} in position {1} in method type {2} at {3} will always return false
 
-isOfClassGuardAlwaysTrue=isOfClass guard for {0} in position {1} in method type {2} will always return true
-isOfClassGuardAlwaysFalse=isOfClass guard for {0} in position {1} in method type {2} will always return false
+isOfClassGuardAlwaysTrue=isOfClass guard for {0} in position {1} in method type {2} at {3} will always return true
+isOfClassGuardAlwaysFalse=isOfClass guard for {0} in position {1} in method type {2} at {3} will always return false
 
-isArrayGuardAlwaysTrue=isArray guard in position {0} in method type {1} will always return true
-isArrayGuardAlwaysFalse=isArray guard in position {0} in method type {1} will always return false
-\ No newline at end of file
+isArrayGuardAlwaysTrue=isArray guard in position {0} in method type {1} at {2} will always return true
+isArrayGuardAlwaysFalse=isArray guard in position {0} in method type {1} at {2} will always return false
+\ No newline at end of file
diff --git a/src/jdk/nashorn/api/scripting/AbstractJSObject.java b/src/jdk/nashorn/api/scripting/AbstractJSObject.java
new file mode 100644
index 00000000..a7761645
--- /dev/null
+++ b/src/jdk/nashorn/api/scripting/AbstractJSObject.java
@@ -0,0 +1,254 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.nashorn.api.scripting;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Set;
+
+/**
+ * This is the base class for nashorn ScriptObjectMirror class.
+ *
+ * This class can also be subclassed by an arbitrary Java class. Nashorn will
+ * treat objects of such classes just like nashorn script objects. Usual nashorn
+ * operations like obj[i], obj.foo, obj.func(), delete obj.foo will be glued
+ * to appropriate method call of this class.
+ */
+public abstract class AbstractJSObject implements JSObject {
+    /**
+     * Call this object as a JavaScript function. This is equivalent to
+     * 'func.apply(thiz, args)' in JavaScript.
+     *
+     * @param thiz 'this' object to be passed to the function
+     * @param args arguments to method
+     * @return result of call
+     */
+    @Override
+    public Object call(final Object thiz, final Object... args) {
+        throw new UnsupportedOperationException("call");
+    }
+
+    /**
+     * Call this 'constructor' JavaScript function to create a new object.
+     * This is equivalent to 'new func(arg1, arg2...)' in JavaScript.
+     *
+     * @param args arguments to method
+     * @return result of constructor call
+     */
+    @Override
+    public Object newObject(final Object... args) {
+        throw new UnsupportedOperationException("newObject");
+    }
+
+    /**
+     * Evaluate a JavaScript expression.
+     *
+     * @param s JavaScript expression to evaluate
+     * @return evaluation result
+     */
+    @Override
+    public Object eval(final String s) {
+        throw new UnsupportedOperationException("eval");
+    }
+
+    /**
+     * Retrieves a named member of this JavaScript object.
+     *
+     * @param name of member
+     * @return member
+     */
+    @Override
+    public Object getMember(final String name) {
+        return null;
+    }
+
+    /**
+     * Retrieves an indexed member of this JavaScript object.
+     *
+     * @param index index slot to retrieve
+     * @return member
+     */
+    @Override
+    public Object getSlot(final int index) {
+        return null;
+    }
+
+    /**
+     * Does this object have a named member?
+     *
+     * @param name name of member
+     * @return true if this object has a member of the given name
+     */
+    @Override
+    public boolean hasMember(final String name) {
+        return false;
+    }
+
+    /**
+     * Does this object have a indexed property?
+     *
+     * @param slot index to check
+     * @return true if this object has a slot
+     */
+    @Override
+    public boolean hasSlot(final int slot) {
+        return false;
+    }
+
+    /**
+     * Remove a named member from this JavaScript object
+     *
+     * @param name name of the member
+     */
+    @Override
+    public void removeMember(final String name) {
+        //empty
+    }
+
+    /**
+     * Set a named member in this JavaScript object
+     *
+     * @param name  name of the member
+     * @param value value of the member
+     */
+    @Override
+    public void setMember(final String name, final Object value) {
+        //empty
+    }
+
+    /**
+     * Set an indexed member in this JavaScript object
+     *
+     * @param index index of the member slot
+     * @param value value of the member
+     */
+    @Override
+    public void setSlot(final int index, final Object value) {
+        //empty
+    }
+
+    // property and value iteration
+
+    /**
+     * Returns the set of all property names of this object.
+     *
+     * @return set of property names
+     */
+    @Override
+    @SuppressWarnings("unchecked")
+    public Set<String> keySet() {
+        return Collections.EMPTY_SET;
+    }
+
+    /**
+     * Returns the set of all property values of this object.
+     *
+     * @return set of property values.
+     */
+    @Override
+    @SuppressWarnings("unchecked")
+    public Collection<Object> values() {
+        return Collections.EMPTY_SET;
+    }
+
+    // JavaScript instanceof check
+
+    /**
+     * Checking whether the given object is an instance of 'this' object.
+     *
+     * @param instance instace to check
+     * @return true if the given 'instance' is an instance of this 'function' object
+     */
+    @Override
+    public boolean isInstance(final Object instance) {
+        return false;
+    }
+
+    /**
+     * Checking whether this object is an instance of the given 'clazz' object.
+     *
+     * @param clazz clazz to check
+     * @return true if this object is an instance of the given 'clazz'
+     */
+    @Override
+    public boolean isInstanceOf(final Object clazz) {
+        if (clazz instanceof JSObject) {
+            return ((JSObject)clazz).isInstance(this);
+        }
+
+        return false;
+    }
+
+    /**
+     * ECMA [[Class]] property
+     *
+     * @return ECMA [[Class]] property value of this object
+     */
+    @Override
+    public String getClassName() {
+        return getClass().getName();
+    }
+
+    /**
+     * Is this a function object?
+     *
+     * @return if this mirror wraps a ECMAScript function instance
+     */
+    @Override
+    public boolean isFunction() {
+        return false;
+    }
+
+    /**
+     * Is this a 'use strict' function object?
+     *
+     * @return true if this mirror represents a ECMAScript 'use strict' function
+     */
+    @Override
+    public boolean isStrictFunction() {
+        return false;
+    }
+
+    /**
+     * Is this an array object?
+     *
+     * @return if this mirror wraps a ECMAScript array object
+     */
+    @Override
+    public boolean isArray() {
+        return false;
+    }
+
+    /**
+     * Returns this object's numeric value.
+     *
+     * @return this object's numeric value.
+     */
+    @Override
+    public double toNumber() {
+        return Double.NaN;
+    }
+}
diff --git a/src/jdk/nashorn/api/scripting/JSObject.java b/src/jdk/nashorn/api/scripting/JSObject.java
index 53b5790e..bd6e820b 100644
--- a/src/jdk/nashorn/api/scripting/JSObject.java
+++ b/src/jdk/nashorn/api/scripting/JSObject.java
@@ -30,14 +30,12 @@ import java.util.Collections;
 import java.util.Set;
 
 /**
- * This is the base class for nashorn ScriptObjectMirror class.
- *
- * This class can also be subclassed by an arbitrary Java class. Nashorn will
+ * This interface can be implemented by an arbitrary Java class. Nashorn will
  * treat objects of such classes just like nashorn script objects. Usual nashorn
  * operations like obj[i], obj.foo, obj.func(), delete obj.foo will be glued
- * to appropriate method call of this class.
+ * to appropriate method call of this interface.
  */
-public abstract class JSObject {
+public interface JSObject {
     /**
      * Call this object as a JavaScript function. This is equivalent to
      * 'func.apply(thiz, args)' in JavaScript.
@@ -46,9 +44,7 @@ public abstract class JSObject {
      * @param args arguments to method
      * @return result of call
      */
-    public Object call(Object thiz, Object... args) {
-        throw new UnsupportedOperationException("call");
-    }
+    public Object call(final Object thiz, final Object... args);
 
     /**
      * Call this 'constructor' JavaScript function to create a new object.
@@ -57,9 +53,7 @@ public abstract class JSObject {
      * @param args arguments to method
      * @return result of constructor call
      */
-    public Object newObject(Object... args) {
-        throw new UnsupportedOperationException("newObject");
-    }
+    public Object newObject(final Object... args);
 
     /**
      * Evaluate a JavaScript expression.
@@ -67,20 +61,7 @@ public abstract class JSObject {
      * @param s JavaScript expression to evaluate
      * @return evaluation result
      */
-    public Object eval(String s) {
-        throw new UnsupportedOperationException("eval");
-    }
-
-    /**
-     * Call a JavaScript function member of this object.
-     *
-     * @param name name of the member function to call
-     * @param args arguments to be passed to the member function
-     * @return result of call
-     */
-    public Object callMember(String name, Object... args) {
-        throw new UnsupportedOperationException("call");
-    }
+    public Object eval(final String s);
 
     /**
      * Retrieves a named member of this JavaScript object.
@@ -88,9 +69,7 @@ public abstract class JSObject {
      * @param name of member
      * @return member
      */
-    public Object getMember(String name) {
-        return null;
-    }
+    public Object getMember(final String name);
 
     /**
      * Retrieves an indexed member of this JavaScript object.
@@ -98,9 +77,7 @@ public abstract class JSObject {
      * @param index index slot to retrieve
      * @return member
      */
-    public Object getSlot(int index) {
-        return null;
-    }
+    public Object getSlot(final int index);
 
     /**
      * Does this object have a named member?
@@ -108,9 +85,7 @@ public abstract class JSObject {
      * @param name name of member
      * @return true if this object has a member of the given name
      */
-    public boolean hasMember(String name) {
-        return false;
-    }
+    public boolean hasMember(final String name);
 
     /**
      * Does this object have a indexed property?
@@ -118,17 +93,14 @@ public abstract class JSObject {
      * @param slot index to check
      * @return true if this object has a slot
      */
-    public boolean hasSlot(int slot) {
-        return false;
-    }
+    public boolean hasSlot(final int slot);
 
     /**
      * Remove a named member from this JavaScript object
      *
      * @param name name of the member
      */
-    public void removeMember(String name) {
-    }
+    public void removeMember(final String name);
 
     /**
      * Set a named member in this JavaScript object
@@ -136,8 +108,7 @@ public abstract class JSObject {
      * @param name  name of the member
      * @param value value of the member
      */
-    public void setMember(String name, Object value) {
-    }
+    public void setMember(final String name, final Object value);
 
     /**
      * Set an indexed member in this JavaScript object
@@ -145,8 +116,7 @@ public abstract class JSObject {
      * @param index index of the member slot
      * @param value value of the member
      */
-    public void setSlot(int index, Object value) {
-    }
+    public void setSlot(final int index, final Object value);
 
     // property and value iteration
 
@@ -155,20 +125,14 @@ public abstract class JSObject {
      *
      * @return set of property names
      */
-    @SuppressWarnings("unchecked")
-    public Set<String> keySet() {
-        return Collections.EMPTY_SET;
-    }
+    public Set<String> keySet();
 
     /**
      * Returns the set of all property values of this object.
      *
      * @return set of property values.
      */
-    @SuppressWarnings("unchecked")
-    public Collection<Object> values() {
-        return Collections.EMPTY_SET;
-    }
+    public Collection<Object> values();
 
     // JavaScript instanceof check
 
@@ -178,9 +142,7 @@ public abstract class JSObject {
      * @param instance instace to check
      * @return true if the given 'instance' is an instance of this 'function' object
      */
-    public boolean isInstance(final Object instance) {
-        return false;
-    }
+    public boolean isInstance(final Object instance);
 
     /**
      * Checking whether this object is an instance of the given 'clazz' object.
@@ -188,47 +150,40 @@ public abstract class JSObject {
      * @param clazz clazz to check
      * @return true if this object is an instance of the given 'clazz'
      */
-    public boolean isInstanceOf(final Object clazz) {
-        if (clazz instanceof JSObject) {
-            return ((JSObject)clazz).isInstance(this);
-        }
-
-        return false;
-    }
+    public boolean isInstanceOf(final Object clazz);
 
     /**
      * ECMA [[Class]] property
      *
      * @return ECMA [[Class]] property value of this object
      */
-    public String getClassName() {
-        return getClass().getName();
-    }
+    public String getClassName();
 
     /**
      * Is this a function object?
      *
      * @return if this mirror wraps a ECMAScript function instance
      */
-    public boolean isFunction() {
-        return false;
-    }
+    public boolean isFunction();
 
     /**
      * Is this a 'use strict' function object?
      *
      * @return true if this mirror represents a ECMAScript 'use strict' function
      */
-    public boolean isStrictFunction() {
-        return false;
-    }
+    public boolean isStrictFunction();
 
     /**
      * Is this an array object?
      *
      * @return if this mirror wraps a ECMAScript array object
      */
-    public boolean isArray() {
-        return false;
-    }
+    public boolean isArray();
+
+    /**
+     * Returns this object's numeric value.
+     *
+     * @return this object's numeric value.
+     */
+    public double toNumber();
 }
diff --git a/src/jdk/nashorn/api/scripting/NashornScriptEngine.java b/src/jdk/nashorn/api/scripting/NashornScriptEngine.java
index 4629665f..d0fb0c31 100644
--- a/src/jdk/nashorn/api/scripting/NashornScriptEngine.java
+++ b/src/jdk/nashorn/api/scripting/NashornScriptEngine.java
@@ -285,11 +285,10 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
                 final URL url = ((URLReader)reader).getURL();
                 final Charset cs = ((URLReader)reader).getCharset();
                 return new Source(url.toString(), url, cs);
-            } else {
-                return new Source(getScriptName(ctxt), Source.readFully(reader));
             }
-        } catch (final IOException ioExp) {
-            throw new ScriptException(ioExp);
+            return new Source(getScriptName(ctxt), Source.readFully(reader));
+        } catch (final IOException e) {
+            throw new ScriptException(e);
         }
     }
 
@@ -313,7 +312,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
             if (! Modifier.isPublic(clazz.getModifiers())) {
                 throw new SecurityException(getMessage("implementing.non.public.interface", clazz.getName()));
             }
-            Context.checkPackageAccess(clazz.getName());
+            Context.checkPackageAccess(clazz);
         }
 
         ScriptObject realSelf = null;
@@ -576,15 +575,14 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
         return new CompiledScript() {
             @Override
             public Object eval(final ScriptContext ctxt) throws ScriptException {
-                final ScriptObject global = getNashornGlobalFrom(ctxt);
+                final ScriptObject globalObject = getNashornGlobalFrom(ctxt);
                 // Are we running the script in the correct global?
-                if (func.getScope() == global) {
-                    return evalImpl(func, ctxt, global);
-                } else {
-                    // ScriptContext with a different global. Compile again!
-                    // Note that we may still hit per-global compilation cache.
-                    return evalImpl(compileImpl(source, ctxt), ctxt, global);
+                if (func.getScope() == globalObject) {
+                    return evalImpl(func, ctxt, globalObject);
                 }
+                // ScriptContext with a different global. Compile again!
+                // Note that we may still hit per-global compilation cache.
+                return evalImpl(compileImpl(source, ctxt), ctxt, globalObject);
             }
             @Override
             public ScriptEngine getEngine() {
diff --git a/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java b/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java
index 3a27d23e..911f1663 100644
--- a/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java
+++ b/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java
@@ -41,8 +41,10 @@ import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.Callable;
 import javax.script.Bindings;
+import jdk.nashorn.internal.runtime.ConsString;
 import jdk.nashorn.internal.runtime.Context;
 import jdk.nashorn.internal.runtime.GlobalObject;
+import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
@@ -50,7 +52,7 @@ import jdk.nashorn.internal.runtime.ScriptRuntime;
 /**
  * Mirror object that wraps a given Nashorn Script object.
  */
-public final class ScriptObjectMirror extends JSObject implements Bindings {
+public final class ScriptObjectMirror extends AbstractJSObject implements Bindings {
     private static AccessControlContext getContextAccCtxt() {
         final Permissions perms = new Permissions();
         perms.add(new RuntimePermission(Context.NASHORN_GET_CONTEXT));
@@ -161,7 +163,6 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
         });
     }
 
-    @Override
     public Object callMember(final String functionName, final Object... args) {
         functionName.getClass(); // null check
         final ScriptObject oldGlobal = Context.getGlobal();
@@ -594,14 +595,35 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
     }
 
     /**
-     * Make a script object mirror on given object if needed.
+     * Utilitity to convert this script object to the given type.
      *
-     * @param obj object to be wrapped
-     * @param homeGlobal global to which this object belongs
-     * @return wrapped object
+     * @param type destination type to convert to
+     * @return converted object
+     */
+    public <T> T to(final Class<T> type) {
+        return inGlobal(new Callable<T>() {
+            @Override
+            public T call() {
+                return type.cast(ScriptUtils.convert(sobj, type));
+            }
+        });
+    }
+
+    /**
+     * Make a script object mirror on given object if needed. Also converts ConsString instances to Strings.
+     *
+     * @param obj object to be wrapped/converted
+     * @param homeGlobal global to which this object belongs. Not used for ConsStrings.
+     * @return wrapped/converted object
      */
-    public static Object wrap(final Object obj, final ScriptObject homeGlobal) {
-        return (obj instanceof ScriptObject && homeGlobal != null) ? new ScriptObjectMirror((ScriptObject)obj, homeGlobal) : obj;
+    public static Object wrap(final Object obj, final Object homeGlobal) {
+        if(obj instanceof ScriptObject) {
+            return homeGlobal instanceof ScriptObject ? new ScriptObjectMirror((ScriptObject)obj, (ScriptObject)homeGlobal) : obj;
+        }
+        if(obj instanceof ConsString) {
+            return obj.toString();
+        }
+        return obj;
     }
 
     /**
@@ -611,7 +633,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
      * @param homeGlobal global to which this object belongs
      * @return unwrapped object
      */
-    public static Object unwrap(final Object obj, final ScriptObject homeGlobal) {
+    public static Object unwrap(final Object obj, final Object homeGlobal) {
         if (obj instanceof ScriptObjectMirror) {
             final ScriptObjectMirror mirror = (ScriptObjectMirror)obj;
             return (mirror.global == homeGlobal)? mirror.sobj : obj;
@@ -627,7 +649,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
      * @param homeGlobal global to which this object belongs
      * @return wrapped array
      */
-    public static Object[] wrapArray(final Object[] args, final ScriptObject homeGlobal) {
+    public static Object[] wrapArray(final Object[] args, final Object homeGlobal) {
         if (args == null || args.length == 0) {
             return args;
         }
@@ -648,7 +670,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
      * @param homeGlobal global to which this object belongs
      * @return unwrapped array
      */
-    public static Object[] unwrapArray(final Object[] args, final ScriptObject homeGlobal) {
+    public static Object[] unwrapArray(final Object[] args, final Object homeGlobal) {
         if (args == null || args.length == 0) {
             return args;
         }
@@ -705,4 +727,13 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
             }
         }
     }
+
+    @Override
+    public double toNumber() {
+        return inGlobal(new Callable<Double>() {
+            @Override public Double call() {
+                return JSType.toNumber(sobj);
+            }
+        });
+    }
 }
diff --git a/src/jdk/nashorn/api/scripting/ScriptUtils.java b/src/jdk/nashorn/api/scripting/ScriptUtils.java
index ccd5879b..29d03db4 100644
--- a/src/jdk/nashorn/api/scripting/ScriptUtils.java
+++ b/src/jdk/nashorn/api/scripting/ScriptUtils.java
@@ -25,10 +25,17 @@
 
 package jdk.nashorn.api.scripting;
 
+import java.lang.invoke.MethodHandle;
+import jdk.internal.dynalink.beans.StaticClass;
+import jdk.internal.dynalink.linker.LinkerServices;
+import jdk.nashorn.internal.runtime.linker.Bootstrap;
+import jdk.nashorn.internal.runtime.Context;
+import jdk.nashorn.internal.runtime.ScriptFunction;
+import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 
 /**
- * Utilities that are to be called from script code
+ * Utilities that are to be called from script code.
  */
 public final class ScriptUtils {
     private ScriptUtils() {}
@@ -57,4 +64,109 @@ public final class ScriptUtils {
     public static String format(final String format, final Object[] args) {
         return Formatter.format(format, args);
     }
+
+    /**
+     * Create a wrapper function that calls {@code func} synchronized on {@code sync} or, if that is undefined,
+     * {@code self}. Used to implement "sync" function in resources/mozilla_compat.js.
+     *
+     * @param func the function to invoke
+     * @param sync the object to synchronize on
+     * @return a synchronizing wrapper function
+     */
+    public static Object makeSynchronizedFunction(final ScriptFunction func, final Object sync) {
+        return func.makeSynchronizedFunction(sync);
+    }
+
+    /**
+     * Make a script object mirror on given object if needed.
+     *
+     * @param obj object to be wrapped
+     * @return wrapped object
+     */
+    public static Object wrap(final Object obj) {
+        if (obj instanceof ScriptObject) {
+            return ScriptObjectMirror.wrap(obj, Context.getGlobal());
+        }
+
+        return obj;
+    }
+
+    /**
+     * Unwrap a script object mirror if needed.
+     *
+     * @param obj object to be unwrapped
+     * @return unwrapped object
+     */
+    public static Object unwrap(final Object obj) {
+        if (obj instanceof ScriptObjectMirror) {
+            return ScriptObjectMirror.unwrap(obj, Context.getGlobal());
+        }
+
+        return obj;
+    }
+
+    /**
+     * Wrap an array of object to script object mirrors if needed.
+     *
+     * @param args array to be unwrapped
+     * @return wrapped array
+     */
+    public static Object[] wrapArray(final Object[] args) {
+        if (args == null || args.length == 0) {
+            return args;
+        }
+
+        return ScriptObjectMirror.wrapArray(args, Context.getGlobal());
+    }
+
+    /**
+     * Unwrap an array of script object mirrors if needed.
+     *
+     * @param args array to be unwrapped
+     * @return unwrapped array
+     */
+    public static Object[] unwrapArray(final Object[] args) {
+        if (args == null || args.length == 0) {
+            return args;
+        }
+
+        return ScriptObjectMirror.unwrapArray(args, Context.getGlobal());
+    }
+
+    /**
+     * Convert the given object to the given type.
+     *
+     * @param obj object to be converted
+     * @param type destination type to convert to
+     * @return converted object
+     */
+    public static Object convert(final Object obj, final Object type) {
+        if (obj == null) {
+            return null;
+        }
+
+        final Class<?> clazz;
+        if (type instanceof Class) {
+            clazz = (Class<?>)type;
+        } else if (type instanceof StaticClass) {
+            clazz = ((StaticClass)type).getRepresentedClass();
+        } else {
+            throw new IllegalArgumentException("type expected");
+        }
+
+        final LinkerServices linker = Bootstrap.getLinkerServices();
+        final MethodHandle converter = linker.getTypeConverter(obj.getClass(),  clazz);
+        if (converter == null) {
+            // no supported conversion!
+            throw new UnsupportedOperationException("conversion not supported");
+        }
+
+        try {
+            return converter.invoke(obj);
+        } catch (final RuntimeException | Error e) {
+            throw e;
+        } catch (final Throwable t) {
+            throw new RuntimeException(t);
+        }
+    }
 }
diff --git a/src/jdk/nashorn/internal/codegen/Attr.java b/src/jdk/nashorn/internal/codegen/Attr.java
index 55355c3e..f1ced8ad 100644
--- a/src/jdk/nashorn/internal/codegen/Attr.java
+++ b/src/jdk/nashorn/internal/codegen/Attr.java
@@ -271,6 +271,7 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
                     functionNode.addDeclaredSymbol(symbol);
                     if (varNode.isFunctionDeclaration()) {
                         newType(symbol, FunctionNode.FUNCTION_TYPE);
+                        symbol.setIsFunctionDeclaration();
                     }
                     return varNode.setName((IdentNode)ident.setSymbol(lc, symbol));
                 }
@@ -480,6 +481,10 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
         }
 
         //unknown parameters are promoted to object type.
+        if (newFunctionNode.hasLazyChildren()) {
+            //the final body has already been assigned as we have left the function node block body by now
+            objectifySymbols(body);
+        }
         newFunctionNode = finalizeParameters(newFunctionNode);
         newFunctionNode = finalizeTypes(newFunctionNode);
         for (final Symbol symbol : newFunctionNode.getDeclaredSymbols()) {
@@ -489,11 +494,6 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
             }
         }
 
-        if (newFunctionNode.hasLazyChildren()) {
-            //the final body has already been assigned as we have left the function node block body by now
-            objectifySymbols(body);
-        }
-
         List<VarNode> syntheticInitializers = null;
 
         if (body.getFlag(Block.NEEDS_SELF_SYMBOL)) {
@@ -503,8 +503,8 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
             syntheticInitializers.add(createSyntheticInitializer(newFunctionNode.getIdent(), CALLEE, newFunctionNode));
         }
 
-        if(newFunctionNode.needsArguments()) {
-            if(syntheticInitializers == null) {
+        if (newFunctionNode.needsArguments()) {
+            if (syntheticInitializers == null) {
                 syntheticInitializers = new ArrayList<>(1);
             }
             // "var arguments = :arguments"
@@ -512,12 +512,12 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
                     ARGUMENTS, newFunctionNode));
         }
 
-        if(syntheticInitializers != null) {
-            final List<Statement> stmts = body.getStatements();
+        if (syntheticInitializers != null) {
+            final List<Statement> stmts = newFunctionNode.getBody().getStatements();
             final List<Statement> newStatements = new ArrayList<>(stmts.size() + syntheticInitializers.size());
             newStatements.addAll(syntheticInitializers);
             newStatements.addAll(stmts);
-            newFunctionNode = newFunctionNode.setBody(lc, body.setStatements(lc, newStatements));
+            newFunctionNode = newFunctionNode.setBody(lc, newFunctionNode.getBody().setStatements(lc, newStatements));
         }
 
         if (returnTypes.peek().isUnknown()) {
@@ -558,12 +558,6 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
     }
 
     @Override
-    public Node leaveCONVERT(final UnaryNode unaryNode) {
-        assert false : "There should be no convert operators in IR during Attribution";
-        return end(unaryNode);
-    }
-
-    @Override
     public Node leaveIdentNode(final IdentNode identNode) {
         final String name = identNode.getName();
 
@@ -991,7 +985,7 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
 
     @Override
     public Node leaveNEW(final UnaryNode unaryNode) {
-        return end(ensureSymbol(Type.OBJECT, unaryNode));
+        return end(ensureSymbol(Type.OBJECT, unaryNode.setRHS(((CallNode)unaryNode.rhs()).setIsNew())));
     }
 
     @Override
@@ -1082,24 +1076,6 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
     private boolean enterAssignmentNode(final BinaryNode binaryNode) {
         start(binaryNode);
 
-        final Node lhs = binaryNode.lhs();
-
-        if (lhs instanceof IdentNode) {
-            final Block     block = lc.getCurrentBlock();
-            final IdentNode ident = (IdentNode)lhs;
-            final String    name  = ident.getName();
-
-            Symbol symbol = findSymbol(block, name);
-
-            if (symbol == null) {
-                symbol = defineSymbol(block, name, IS_GLOBAL);
-            } else {
-                maybeForceScope(symbol);
-            }
-
-            addLocalDef(name);
-        }
-
         return true;
     }
 
@@ -1112,20 +1088,33 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
      * @param binaryNode assignment node
      */
     private Node leaveAssignmentNode(final BinaryNode binaryNode) {
-        BinaryNode newBinaryNode = binaryNode;
-
         final Expression lhs = binaryNode.lhs();
         final Expression rhs = binaryNode.rhs();
         final Type type;
 
+        if (lhs instanceof IdentNode) {
+            final Block     block = lc.getCurrentBlock();
+            final IdentNode ident = (IdentNode)lhs;
+            final String    name  = ident.getName();
+            final Symbol symbol = findSymbol(block, name);
+
+            if (symbol == null) {
+                defineSymbol(block, name, IS_GLOBAL);
+            } else {
+                maybeForceScope(symbol);
+            }
+
+            addLocalDef(name);
+        }
+
         if (rhs.getType().isNumeric()) {
-            type = Type.widest(binaryNode.lhs().getType(), binaryNode.rhs().getType());
+            type = Type.widest(lhs.getType(), rhs.getType());
         } else {
             type = Type.OBJECT; //force lhs to be an object if not numeric assignment, e.g. strings too.
         }
 
         newType(lhs.getSymbol(), type);
-        return end(ensureSymbol(type, newBinaryNode));
+        return end(ensureSymbol(type, binaryNode));
     }
 
     private boolean isLocal(FunctionNode function, Symbol symbol) {
@@ -1276,12 +1265,17 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
 
     @Override
     public Node leaveCOMMARIGHT(final BinaryNode binaryNode) {
-        return end(ensureSymbol(binaryNode.rhs().getType(), binaryNode));
+        return leaveComma(binaryNode, binaryNode.rhs());
     }
 
     @Override
     public Node leaveCOMMALEFT(final BinaryNode binaryNode) {
-        return end(ensureSymbol(binaryNode.lhs().getType(), binaryNode));
+        return leaveComma(binaryNode, binaryNode.lhs());
+    }
+
+    private Node leaveComma(final BinaryNode commaNode, final Expression effectiveExpr) {
+        ensureTypeNotUnknown(effectiveExpr);
+        return end(ensureSymbol(effectiveExpr.getType(), commaNode));
     }
 
     @Override
@@ -1292,7 +1286,9 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
     private Node leaveCmp(final BinaryNode binaryNode) {
         ensureTypeNotUnknown(binaryNode.lhs());
         ensureTypeNotUnknown(binaryNode.rhs());
-
+        Type widest = Type.widest(binaryNode.lhs().getType(), binaryNode.rhs().getType());
+        ensureSymbol(widest, binaryNode.lhs());
+        ensureSymbol(widest, binaryNode.rhs());
         return end(ensureSymbol(Type.BOOLEAN, binaryNode));
     }
 
@@ -1635,7 +1631,7 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
                     if (!Type.areEquivalent(from, to) && Type.widest(from, to) == to) {
                         LOG.fine("Had to post pass widen '", node, "' ", Debug.id(node), " from ", node.getType(), " to ", to);
                         Symbol symbol = node.getSymbol();
-                        if(symbol.isShared() && symbol.wouldChangeType(to)) {
+                        if (symbol.isShared() && symbol.wouldChangeType(to)) {
                             symbol = temporarySymbols.getTypedTemporarySymbol(to);
                         }
                         newType(symbol, to);
@@ -1651,40 +1647,105 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
                     return !node.isLazy();
                 }
 
-                /**
-                 * Eg.
-                 *
-                 * var d = 17;
-                 * var e;
-                 * e = d; //initially typed as int for node type, should retype as double
-                 * e = object;
-                 *
-                 * var d = 17;
-                 * var e;
-                 * e -= d; //initially type number, should number remain with a final conversion supplied by Store. ugly, but the computation result of the sub is numeric
-                 * e = object;
-                 *
-                 */
+                //
+                // Eg.
+                //
+                // var d = 17;
+                // var e;
+                // e = d; //initially typed as int for node type, should retype as double
+                // e = object;
+                //
+                // var d = 17;
+                // var e;
+                // e -= d; //initially type number, should number remain with a final conversion supplied by Store. ugly, but the computation result of the sub is numeric
+                // e = object;
+                //
                 @SuppressWarnings("fallthrough")
                 @Override
                 public Node leaveBinaryNode(final BinaryNode binaryNode) {
                     final Type widest = Type.widest(binaryNode.lhs().getType(), binaryNode.rhs().getType());
                     BinaryNode newBinaryNode = binaryNode;
-                    switch (binaryNode.tokenType()) {
-                    default:
-                        if (!binaryNode.isAssignment() || binaryNode.isSelfModifying()) {
+
+                    if (isAdd(binaryNode)) {
+                        newBinaryNode = (BinaryNode)widen(newBinaryNode, widest);
+                        if (newBinaryNode.getType().isObject() && !isAddString(newBinaryNode)) {
+                            return new RuntimeNode(newBinaryNode, Request.ADD);
+                        }
+                    } else if (binaryNode.isComparison()) {
+                        final Expression lhs = newBinaryNode.lhs();
+                        final Expression rhs = newBinaryNode.rhs();
+
+                        Type cmpWidest = Type.widest(lhs.getType(), rhs.getType());
+
+                        boolean newRuntimeNode = false, finalized = false;
+                        switch (newBinaryNode.tokenType()) {
+                        case EQ_STRICT:
+                        case NE_STRICT:
+                            if (lhs.getType().isBoolean() != rhs.getType().isBoolean()) {
+                                newRuntimeNode = true;
+                                cmpWidest = Type.OBJECT;
+                                finalized = true;
+                            }
+                            //fallthru
+                        default:
+                            if (newRuntimeNode || cmpWidest.isObject()) {
+                                return new RuntimeNode(newBinaryNode, Request.requestFor(binaryNode)).setIsFinal(finalized);
+                            }
                             break;
                         }
+
+                        return newBinaryNode;
+                    } else {
+                        if (!binaryNode.isAssignment() || binaryNode.isSelfModifying()) {
+                            return newBinaryNode;
+                        }
+                        checkThisAssignment(binaryNode);
                         newBinaryNode = newBinaryNode.setLHS(widen(newBinaryNode.lhs(), widest));
-                    case ADD:
                         newBinaryNode = (BinaryNode)widen(newBinaryNode, widest);
                     }
+
                     return newBinaryNode;
+
+                }
+
+                private boolean isAdd(final Node node) {
+                    return node.isTokenType(TokenType.ADD);
+                }
+
+                /**
+                 * Determine if the outcome of + operator is a string.
+                 *
+                 * @param node  Node to test.
+                 * @return true if a string result.
+                 */
+                private boolean isAddString(final Node node) {
+                    if (node instanceof BinaryNode && isAdd(node)) {
+                        final BinaryNode binaryNode = (BinaryNode)node;
+                        final Node lhs = binaryNode.lhs();
+                        final Node rhs = binaryNode.rhs();
+
+                        return isAddString(lhs) || isAddString(rhs);
+                    }
+
+                    return node instanceof LiteralNode<?> && ((LiteralNode<?>)node).isString();
+                }
+
+                private void checkThisAssignment(final BinaryNode binaryNode) {
+                    if (binaryNode.isAssignment()) {
+                        if (binaryNode.lhs() instanceof AccessNode) {
+                            final AccessNode accessNode = (AccessNode) binaryNode.lhs();
+
+                            if (accessNode.getBase().getSymbol().isThis()) {
+                                lc.getCurrentFunction().addThisProperty(accessNode.getProperty().getName());
+                            }
+                        }
+                    }
                 }
             });
             lc.replace(currentFunctionNode, newFunctionNode);
             currentFunctionNode = newFunctionNode;
         } while (!changed.isEmpty());
+
         return currentFunctionNode;
     }
 
@@ -1697,7 +1758,6 @@ final class Attr extends NodeOperatorVisitor<LexicalContext> {
         final Expression lhs = binaryNode.lhs();
 
         newType(lhs.getSymbol(), destType); //may not narrow if dest is already wider than destType
-//        ensureSymbol(destType, binaryNode); //for OP= nodes, the node can carry a narrower types than its lhs rhs. This is perfectly fine
 
         return end(ensureSymbol(destType, binaryNode));
     }
diff --git a/src/jdk/nashorn/internal/codegen/BranchOptimizer.java b/src/jdk/nashorn/internal/codegen/BranchOptimizer.java
index 02ea95f1..ad9bdb07 100644
--- a/src/jdk/nashorn/internal/codegen/BranchOptimizer.java
+++ b/src/jdk/nashorn/internal/codegen/BranchOptimizer.java
@@ -56,10 +56,6 @@ final class BranchOptimizer {
         branchOptimizer(node, label, state);
     }
 
-    private void load(final Expression node) {
-        codegen.load(node);
-    }
-
     private void branchOptimizer(final UnaryNode unaryNode, final Label label, final boolean state) {
         final Expression rhs = unaryNode.rhs();
 
@@ -67,19 +63,16 @@ final class BranchOptimizer {
         case NOT:
             branchOptimizer(rhs, label, !state);
             return;
-        case CONVERT:
+        default:
             if (unaryNode.getType().isBoolean()) {
                 branchOptimizer(rhs, label, state);
                 return;
             }
             break;
-        default:
-            break;
         }
 
         // convert to boolean
-        load(unaryNode);
-        method.convert(Type.BOOLEAN);
+        codegen.load(unaryNode, Type.BOOLEAN);
         if (state) {
             method.ifne(label);
         } else {
@@ -118,45 +111,33 @@ final class BranchOptimizer {
 
         case EQ:
         case EQ_STRICT:
-            assert rhs.getType().isEquivalentTo(lhs.getType()) : "type mismatch: " + lhs.getSymbol() + " to " + rhs.getSymbol();
-            load(lhs);
-            load(rhs);
+            codegen.loadBinaryOperands(lhs, rhs, Type.widest(lhs.getType(), rhs.getType()));
             method.conditionalJump(state ? EQ : NE, true, label);
             return;
 
         case NE:
         case NE_STRICT:
-            assert rhs.getType().isEquivalentTo(lhs.getType()) : "type mismatch: " + lhs.getSymbol() + " to " + rhs.getSymbol();
-            load(lhs);
-            load(rhs);
+            codegen.loadBinaryOperands(lhs, rhs, Type.widest(lhs.getType(), rhs.getType()));
             method.conditionalJump(state ? NE : EQ, true, label);
             return;
 
         case GE:
-            assert rhs.getType().isEquivalentTo(lhs.getType()) : "type mismatch: " + lhs.getSymbol() + " to " + rhs.getSymbol();
-            load(lhs);
-            load(rhs);
+            codegen.loadBinaryOperands(lhs, rhs, Type.widest(lhs.getType(), rhs.getType()));
             method.conditionalJump(state ? GE : LT, !state, label);
             return;
 
         case GT:
-            assert rhs.getType().isEquivalentTo(lhs.getType()) : "type mismatch: " + lhs.getSymbol() + " to " + rhs.getSymbol();
-            load(lhs);
-            load(rhs);
+            codegen.loadBinaryOperands(lhs, rhs, Type.widest(lhs.getType(), rhs.getType()));
             method.conditionalJump(state ? GT : LE, !state, label);
             return;
 
         case LE:
-            assert rhs.getType().isEquivalentTo(lhs.getType()) : "type mismatch: " + lhs.getSymbol() + " to " + rhs.getSymbol();
-            load(lhs);
-            load(rhs);
+            codegen.loadBinaryOperands(lhs, rhs, Type.widest(lhs.getType(), rhs.getType()));
             method.conditionalJump(state ? LE : GT, state, label);
             return;
 
         case LT:
-            assert rhs.getType().isEquivalentTo(lhs.getType()) : "type mismatch: " + lhs.getSymbol() + " to " + rhs.getSymbol() + " in " + binaryNode;
-            load(lhs);
-            load(rhs);
+            codegen.loadBinaryOperands(lhs, rhs, Type.widest(lhs.getType(), rhs.getType()));
             method.conditionalJump(state ? LT : GE, state, label);
             return;
 
@@ -164,8 +145,7 @@ final class BranchOptimizer {
             break;
         }
 
-        load(binaryNode);
-        method.convert(Type.BOOLEAN);
+        codegen.load(binaryNode, Type.BOOLEAN);
         if (state) {
             method.ifne(label);
         } else {
@@ -187,8 +167,7 @@ final class BranchOptimizer {
             }
         }
 
-        load(node);
-        method.convert(Type.BOOLEAN);
+        codegen.load(node, Type.BOOLEAN);
         if (state) {
             method.ifne(label);
         } else {
diff --git a/src/jdk/nashorn/internal/codegen/CodeGenerator.java b/src/jdk/nashorn/internal/codegen/CodeGenerator.java
index d16a1e5b..f5c1fb87 100644
--- a/src/jdk/nashorn/internal/codegen/CodeGenerator.java
+++ b/src/jdk/nashorn/internal/codegen/CodeGenerator.java
@@ -43,7 +43,6 @@ import static jdk.nashorn.internal.codegen.CompilerConstants.constructorNoLookup
 import static jdk.nashorn.internal.codegen.CompilerConstants.interfaceCallNoLookup;
 import static jdk.nashorn.internal.codegen.CompilerConstants.methodDescriptor;
 import static jdk.nashorn.internal.codegen.CompilerConstants.staticCallNoLookup;
-import static jdk.nashorn.internal.codegen.CompilerConstants.staticField;
 import static jdk.nashorn.internal.codegen.CompilerConstants.typeDescriptor;
 import static jdk.nashorn.internal.codegen.CompilerConstants.virtualCallNoLookup;
 import static jdk.nashorn.internal.ir.Symbol.IS_INTERNAL;
@@ -60,7 +59,6 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.Locale;
 import java.util.Set;
 import java.util.TreeMap;
 import jdk.nashorn.internal.codegen.ClassEmitter.Flag;
@@ -111,7 +109,6 @@ import jdk.nashorn.internal.ir.UnaryNode;
 import jdk.nashorn.internal.ir.VarNode;
 import jdk.nashorn.internal.ir.WhileNode;
 import jdk.nashorn.internal.ir.WithNode;
-import jdk.nashorn.internal.ir.debug.ASTWriter;
 import jdk.nashorn.internal.ir.visitor.NodeOperatorVisitor;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 import jdk.nashorn.internal.objects.Global;
@@ -217,12 +214,12 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
      * @param identNode an identity node to load
      * @return the method generator used
      */
-    private MethodEmitter loadIdent(final IdentNode identNode) {
+    private MethodEmitter loadIdent(final IdentNode identNode, final Type type) {
         final Symbol symbol = identNode.getSymbol();
 
         if (!symbol.isScope()) {
             assert symbol.hasSlot() || symbol.isParam();
-            return method.load(symbol);
+            return method.load(symbol).convert(type);
         }
 
         final String name   = symbol.getName();
@@ -243,11 +240,11 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
             if (isFastScope(symbol)) {
                 // Only generate shared scope getter for fast-scope symbols so we know we can dial in correct scope.
                 if (symbol.getUseCount() > SharedScopeCall.FAST_SCOPE_GET_THRESHOLD) {
-                    return loadSharedScopeVar(identNode.getType(), symbol, flags);
+                    return loadSharedScopeVar(type, symbol, flags);
                 }
-                return loadFastScopeVar(identNode.getType(), symbol, flags, identNode.isFunction());
+                return loadFastScopeVar(type, symbol, flags, identNode.isFunction());
             }
-            return method.dynamicGet(identNode.getType(), identNode.getName(), flags, identNode.isFunction());
+            return method.dynamicGet(type, identNode.getName(), flags, identNode.isFunction());
         }
     }
 
@@ -313,9 +310,9 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         return method.dynamicGet(valueType, symbol.getName(), flags | CALLSITE_FAST_SCOPE, isMethod);
     }
 
-    private MethodEmitter storeFastScopeVar(final Type valueType, final Symbol symbol, final int flags) {
+    private MethodEmitter storeFastScopeVar(final Symbol symbol, final int flags) {
         loadFastScopeProto(symbol, true);
-        method.dynamicSet(valueType, symbol.getName(), flags | CALLSITE_FAST_SCOPE);
+        method.dynamicSet(symbol.getName(), flags | CALLSITE_FAST_SCOPE);
         return method;
     }
 
@@ -359,18 +356,64 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
      * @return the method emitter used
      */
     MethodEmitter load(final Expression node) {
-        return load(node, false);
+        return load(node, node.hasType() ? node.getType() : null, false);
+    }
+
+    // Test whether conversion from source to target involves a call of ES 9.1 ToPrimitive
+    // with possible side effects from calling an object's toString or valueOf methods.
+    private boolean noToPrimitiveConversion(final Type source, final Type target) {
+        // Object to boolean conversion does not cause ToPrimitive call
+        return source.isJSPrimitive() || !target.isJSPrimitive() || target.isBoolean();
+    }
+
+    MethodEmitter loadBinaryOperands(final Expression lhs, final Expression rhs, final Type type) {
+        return loadBinaryOperands(lhs, rhs, type, false);
+    }
+
+    private MethodEmitter loadBinaryOperands(final Expression lhs, final Expression rhs, final Type type, final boolean baseAlreadyOnStack) {
+        // ECMAScript 5.1 specification (sections 11.5-11.11 and 11.13) prescribes that when evaluating a binary
+        // expression "LEFT op RIGHT", the order of operations must be: LOAD LEFT, LOAD RIGHT, CONVERT LEFT, CONVERT
+        // RIGHT, EXECUTE OP. Unfortunately, doing it in this order defeats potential optimizations that arise when we
+        // can combine a LOAD with a CONVERT operation (e.g. use a dynamic getter with the conversion target type as its
+        // return value). What we do here is reorder LOAD RIGHT and CONVERT LEFT when possible; it is possible only when
+        // we can prove that executing CONVERT LEFT can't have a side effect that changes the value of LOAD RIGHT.
+        // Basically, if we know that either LEFT already is a primitive value, or does not have to be converted to
+        // a primitive value, or RIGHT is an expression that loads without side effects, then we can do the
+        // reordering and collapse LOAD/CONVERT into a single operation; otherwise we need to do the more costly
+        // separate operations to preserve specification semantics.
+        if (noToPrimitiveConversion(lhs.getType(), type) || rhs.isLocal()) {
+            // Can reorder. Combine load and convert into single operations.
+            load(lhs, type, baseAlreadyOnStack);
+            load(rhs, type, false);
+        } else {
+            // Can't reorder. Load and convert separately.
+            load(lhs, lhs.getType(), baseAlreadyOnStack);
+            load(rhs, rhs.getType(), false);
+            method.swap().convert(type).swap().convert(type);
+        }
+
+        return method;
+    }
+
+    MethodEmitter loadBinaryOperands(final BinaryNode node) {
+        return loadBinaryOperands(node.lhs(), node.rhs(), node.getType(), false);
+    }
+
+    MethodEmitter load(final Expression node, final Type type) {
+        return load(node, type, false);
     }
 
-    private MethodEmitter load(final Expression node, final boolean baseAlreadyOnStack) {
+    private MethodEmitter load(final Expression node, final Type type, final boolean baseAlreadyOnStack) {
         final Symbol symbol = node.getSymbol();
 
         // If we lack symbols, we just generate what we see.
-        if (symbol == null) {
+        if (symbol == null || type == null) {
             node.accept(this);
             return method;
         }
 
+        assert !type.isUnknown();
+
         /*
          * The load may be of type IdentNode, e.g. "x", AccessNode, e.g. "x.y"
          * or IndexNode e.g. "x[y]". Both AccessNodes and IndexNodes are
@@ -378,30 +421,30 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
          */
         final CodeGenerator codegen = this;
 
-        node.accept(new NodeVisitor<LexicalContext>(new LexicalContext()) {
+        node.accept(new NodeVisitor<LexicalContext>(lc) {
             @Override
             public boolean enterIdentNode(final IdentNode identNode) {
-                loadIdent(identNode);
+                loadIdent(identNode, type);
                 return false;
             }
 
             @Override
             public boolean enterAccessNode(final AccessNode accessNode) {
                 if (!baseAlreadyOnStack) {
-                    load(accessNode.getBase()).convert(Type.OBJECT);
+                    load(accessNode.getBase(), Type.OBJECT);
                 }
                 assert method.peekType().isObject();
-                method.dynamicGet(node.getType(), accessNode.getProperty().getName(), getCallSiteFlags(), accessNode.isFunction());
+                method.dynamicGet(type, accessNode.getProperty().getName(), getCallSiteFlags(), accessNode.isFunction());
                 return false;
             }
 
             @Override
             public boolean enterIndexNode(final IndexNode indexNode) {
                 if (!baseAlreadyOnStack) {
-                    load(indexNode.getBase()).convert(Type.OBJECT);
+                    load(indexNode.getBase(), Type.OBJECT);
                     load(indexNode.getIndex());
                 }
-                method.dynamicGetIndex(node.getType(), getCallSiteFlags(), indexNode.isFunction());
+                method.dynamicGetIndex(type, getCallSiteFlags(), indexNode.isFunction());
                 return false;
             }
 
@@ -409,14 +452,36 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
             public boolean enterFunctionNode(FunctionNode functionNode) {
                 // function nodes will always leave a constructed function object on stack, no need to load the symbol
                 // separately as in enterDefault()
+                lc.pop(functionNode);
                 functionNode.accept(codegen);
+                // NOTE: functionNode.accept() will produce a different FunctionNode that we discard. This incidentally
+                // doesn't cause problems as we're never touching FunctionNode again after it's visited here - codegen
+                // is the last element in the compilation pipeline, the AST it produces is not used externally. So, we
+                // re-push the original functionNode.
+                lc.push(functionNode);
+                method.convert(type);
                 return false;
             }
 
             @Override
+            public boolean enterCallNode(CallNode callNode) {
+                return codegen.enterCallNode(callNode, type);
+            }
+
+            @Override
+            public boolean enterLiteralNode(LiteralNode<?> literalNode) {
+                return codegen.enterLiteralNode(literalNode, type);
+            }
+
+            @Override
             public boolean enterDefault(final Node otherNode) {
+                final Node currentDiscard = codegen.lc.getCurrentDiscard();
                 otherNode.accept(codegen); // generate code for whatever we are looking at.
-                method.load(symbol); // load the final symbol to the stack (or nop if no slot, then result is already there)
+                if(currentDiscard != otherNode) {
+                    method.load(symbol); // load the final symbol to the stack (or nop if no slot, then result is already there)
+                    assert method.peekType() != null;
+                    method.convert(type);
+                }
                 return false;
             }
         });
@@ -566,11 +631,13 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         final Type[] params = signature == null ? null : Type.getMethodArguments(signature);
         for (final Expression arg : args) {
             assert arg != null;
-            load(arg);
             if (n >= argCount) {
+                load(arg);
                 method.pop(); // we had to load the arg for its side effects
             } else if (params != null) {
-                method.convert(params[n]);
+                load(arg, params[n]);
+            } else {
+                load(arg);
             }
             n++;
         }
@@ -583,15 +650,19 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         return argCount;
     }
 
+
     @Override
     public boolean enterCallNode(final CallNode callNode) {
+        return enterCallNode(callNode, callNode.getType());
+    }
+
+    private boolean enterCallNode(final CallNode callNode, final Type callNodeType) {
         lineNumber(callNode.getLineNumber());
 
         final List<Expression> args = callNode.getArgs();
         final Expression function = callNode.getFunction();
         final Block currentBlock = lc.getCurrentBlock();
         final CodeGeneratorLexicalContext codegenLexicalContext = lc;
-        final Type callNodeType = callNode.getType();
 
         function.accept(new NodeVisitor<LexicalContext>(new LexicalContext()) {
 
@@ -612,16 +683,14 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
             }
 
             private void scopeCall(final IdentNode node, final int flags) {
-                load(node);
-                method.convert(Type.OBJECT); // foo() makes no sense if foo == 3
+                load(node, Type.OBJECT); // Type.OBJECT as foo() makes no sense if foo == 3
                 // ScriptFunction will see CALLSITE_SCOPE and will bind scope accordingly.
                 method.loadNull(); //the 'this'
                 method.dynamicCall(callNodeType, 2 + loadArgs(args), flags);
             }
 
             private void evalCall(final IdentNode node, final int flags) {
-                load(node);
-                method.convert(Type.OBJECT); // foo() makes no sense if foo == 3
+                load(node, Type.OBJECT); // Type.OBJECT as foo() makes no sense if foo == 3
 
                 final Label not_eval  = new Label("not_eval");
                 final Label eval_done = new Label("eval_done");
@@ -638,8 +707,13 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
                 final CallNode.EvalArgs evalArgs = callNode.getEvalArgs();
                 // load evaluated code
-                load(evalArgs.getCode());
-                method.convert(Type.OBJECT);
+                load(evalArgs.getCode(), Type.OBJECT);
+                // load second and subsequent args for side-effect
+                final List<Expression> args = callNode.getArgs();
+                final int numArgs = args.size();
+                for (int i = 1; i < numArgs; i++) {
+                    load(args.get(i)).pop();
+                }
                 // special/extra 'eval' arguments
                 load(evalArgs.getThis());
                 method.load(evalArgs.getLocation());
@@ -690,13 +764,11 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
             @Override
             public boolean enterAccessNode(final AccessNode node) {
-                load(node.getBase());
-                method.convert(Type.OBJECT);
+                load(node.getBase(), Type.OBJECT);
                 method.dup();
                 method.dynamicGet(node.getType(), node.getProperty().getName(), getCallSiteFlags(), true);
                 method.swap();
                 method.dynamicCall(callNodeType, 2 + loadArgs(args), getCallSiteFlags());
-                assert method.peekType().equals(callNodeType);
 
                 return false;
             }
@@ -727,18 +799,17 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
             @Override
             public boolean enterIndexNode(final IndexNode node) {
-                load(node.getBase());
-                method.convert(Type.OBJECT);
+                load(node.getBase(), Type.OBJECT);
                 method.dup();
-                load(node.getIndex());
                 final Type indexType = node.getIndex().getType();
                 if (indexType.isObject() || indexType.isBoolean()) {
-                    method.convert(Type.OBJECT); //TODO
+                    load(node.getIndex(), Type.OBJECT); //TODO
+                } else {
+                    load(node.getIndex());
                 }
                 method.dynamicGetIndex(node.getType(), getCallSiteFlags(), true);
                 method.swap();
                 method.dynamicCall(callNodeType, 2 + loadArgs(args), getCallSiteFlags());
-                assert method.peekType().equals(callNode.getType());
 
                 return false;
             }
@@ -746,11 +817,9 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
             @Override
             protected boolean enterDefault(final Node node) {
                 // Load up function.
-                load(function);
-                method.convert(Type.OBJECT); //TODO, e.g. booleans can be used as functions
+                load(function, Type.OBJECT); //TODO, e.g. booleans can be used as functions
                 method.loadNull(); // ScriptFunction will figure out the correct this when it sees CALLSITE_SCOPE
                 method.dynamicCall(callNodeType, 2 + loadArgs(args), getCallSiteFlags() | CALLSITE_SCOPE);
-                assert method.peekType().equals(callNode.getType());
 
                 return false;
             }
@@ -853,8 +922,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
         final Expression init = forNode.getInit();
 
-        load(modify);
-        assert modify.getType().isObject();
+        load(modify, Type.OBJECT);
         method.invoke(forNode.isForEach() ? ScriptRuntime.TO_VALUE_ITERATOR : ScriptRuntime.TO_PROPERTY_ITERATOR);
         method.store(iter);
         method._goto(forNode.getContinueLabel());
@@ -1203,8 +1271,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         if (element == null) {
             method.loadEmpty(elementType);
         } else {
-            assert elementType.isEquivalentTo(element.getType()) : "array element type doesn't match array type";
-            load(element);
+            load(element, elementType);
         }
 
         method.arraystore();
@@ -1217,7 +1284,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         for (int i = 0; i < args.size(); i++) {
             method.dup();
             method.load(i);
-            load(args.get(i)).convert(Type.OBJECT); //has to be upcast to object or we fail
+            load(args.get(i), Type.OBJECT); //has to be upcast to object or we fail
             method.arraystore();
         }
 
@@ -1274,7 +1341,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
     }
 
     // literal values
-    private MethodEmitter load(final LiteralNode<?> node) {
+    private MethodEmitter loadLiteral(final LiteralNode<?> node, final Type type) {
         final Object value = node.getValue();
 
         if (value == null) {
@@ -1294,15 +1361,26 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         } else if (value instanceof Boolean) {
             method.load((Boolean)value);
         } else if (value instanceof Integer) {
-            method.load((Integer)value);
+            if(type.isEquivalentTo(Type.NUMBER)) {
+                method.load(((Integer)value).doubleValue());
+            } else if(type.isEquivalentTo(Type.LONG)) {
+                method.load(((Integer)value).longValue());
+            } else {
+                method.load((Integer)value);
+            }
         } else if (value instanceof Long) {
-            method.load((Long)value);
+            if(type.isEquivalentTo(Type.NUMBER)) {
+                method.load(((Long)value).doubleValue());
+            } else {
+                method.load((Long)value);
+            }
         } else if (value instanceof Double) {
             method.load((Double)value);
         } else if (node instanceof ArrayLiteralNode) {
-            final ArrayType type = (ArrayType)node.getType();
-            loadArray((ArrayLiteralNode)node, type);
-            globalAllocateArray(type);
+            final ArrayLiteralNode arrayLiteral = (ArrayLiteralNode)node;
+            final ArrayType atype = arrayLiteral.getArrayType();
+            loadArray(arrayLiteral, atype);
+            globalAllocateArray(atype);
         } else {
             assert false : "Unknown literal for " + node.getClass() + " " + value.getClass() + " " + value;
         }
@@ -1346,8 +1424,12 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
     @Override
     public boolean enterLiteralNode(final LiteralNode<?> literalNode) {
+        return enterLiteralNode(literalNode, literalNode.getType());
+    }
+
+    private boolean enterLiteralNode(final LiteralNode<?> literalNode, final Type type) {
         assert literalNode.getSymbol() != null : literalNode + " has no symbol";
-        load(literalNode).store(literalNode.getSymbol());
+        loadLiteral(literalNode, type).convert(type).store(literalNode.getSymbol());
         return false;
     }
 
@@ -1622,10 +1704,8 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
                 return enterCmp(lhs, rhs, Condition.GT, type, symbol);
             case ADD:
                 Type widest = Type.widest(lhs.getType(), rhs.getType());
-                load(lhs);
-                method.convert(widest);
-                load(rhs);
-                method.convert(widest);
+                load(lhs, widest);
+                load(rhs, widest);
                 method.add();
                 method.convert(type);
                 method.store(symbol);
@@ -1638,15 +1718,15 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         }
 
         if (nullCheck(runtimeNode, args, new FunctionSignature(false, false, runtimeNode.getType(), args).toString())) {
-            return false;
+           return false;
         }
 
         if (!runtimeNode.isFinal() && specializationCheck(runtimeNode.getRequest(), runtimeNode, args)) {
-            return false;
+           return false;
         }
 
         for (final Expression arg : args) {
-            load(arg).convert(Type.OBJECT); //TODO this should not be necessary below Lower
+            load(arg, Type.OBJECT);
         }
 
         method.invokestatic(
@@ -1827,6 +1907,8 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         }
 
         if (cases.isEmpty()) {
+            // still evaluate expression for side-effects.
+            load(expression).pop();
             method.label(breakLabel);
             return false;
         }
@@ -1901,24 +1983,15 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
                 method.lookupswitch(defaultLabel, ints, labels);
             }
         } else {
-            load(expression);
-
-            if (expression.getType().isInteger()) {
-                method.convert(Type.NUMBER).dup();
-                method.store(tag);
-                method.conditionalJump(Condition.NE, true, defaultLabel);
-            } else {
-                assert tag.getSymbolType().isObject();
-                method.convert(Type.OBJECT); //e.g. 1 literal pushed and tag is object
-                method.store(tag);
-            }
+            load(expression, Type.OBJECT);
+            method.store(tag);
 
             for (final CaseNode caseNode : cases) {
                 final Expression test = caseNode.getTest();
 
                 if (test != null) {
                     method.load(tag);
-                    load(test);
+                    load(test, Type.OBJECT);
                     method.invoke(ScriptRuntime.EQ_STRICT);
                     method.ifne(caseNode.getEntry());
                 }
@@ -1956,11 +2029,10 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
         final Expression expression = throwNode.getExpression();
         final int        position   = throwNode.position();
-        final int        line       = source.getLine(position);
+        final int        line       = throwNode.getLineNumber();
         final int        column     = source.getColumn(position);
 
-        load(expression);
-        assert expression.getType().isObject();
+        load(expression, Type.OBJECT);
 
         method.load(source.getName());
         method.load(line);
@@ -2040,7 +2112,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
             if (exceptionCondition != null) {
                 next = new Label("next");
-                load(exceptionCondition).convert(Type.BOOLEAN).ifeq(next);
+                load(exceptionCondition, Type.BOOLEAN).ifeq(next);
             } else {
                 next = null;
             }
@@ -2085,29 +2157,28 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
         lineNumber(varNode);
 
-        final Symbol varSymbol = varNode.getName().getSymbol();
-        assert varSymbol != null : "variable node " + varNode + " requires a name with a symbol";
+        final IdentNode identNode = varNode.getName();
+        final Symbol identSymbol = identNode.getSymbol();
+        assert identSymbol != null : "variable node " + varNode + " requires a name with a symbol";
 
         assert method != null;
 
-        final boolean needsScope = varSymbol.isScope();
+        final boolean needsScope = identSymbol.isScope();
         if (needsScope) {
             method.loadCompilerConstant(SCOPE);
         }
-        load(init);
 
         if (needsScope) {
+            load(init);
             int flags = CALLSITE_SCOPE | getCallSiteFlags();
-            final IdentNode identNode = varNode.getName();
-            final Type type = identNode.getType();
-            if (isFastScope(varSymbol)) {
-                storeFastScopeVar(type, varSymbol, flags);
+            if (isFastScope(identSymbol)) {
+                storeFastScopeVar(identSymbol, flags);
             } else {
-                method.dynamicSet(type, identNode.getName(), flags);
+                method.dynamicSet(identNode.getName(), flags);
             }
         } else {
-            method.convert(varNode.getName().getType()); // aw: convert moved here
-            method.store(varSymbol);
+            load(init, identNode.getType());
+            method.store(identSymbol);
         }
 
         return false;
@@ -2166,8 +2237,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
             tryLabel = null;
         }
 
-        load(expression);
-        assert expression.getType().isObject() : "with expression needs to be object: " + expression;
+        load(expression, Type.OBJECT);
 
         if (hasScope) {
             // Construct a WithObject if we have a scope
@@ -2209,54 +2279,15 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
     @Override
     public boolean enterADD(final UnaryNode unaryNode) {
-        load(unaryNode.rhs());
-        assert unaryNode.rhs().getType().isNumber() : unaryNode.rhs().getType() + " "+ unaryNode.getSymbol();
+        load(unaryNode.rhs(), unaryNode.getType());
+        assert unaryNode.getType().isNumeric();
         method.store(unaryNode.getSymbol());
-
         return false;
     }
 
     @Override
     public boolean enterBIT_NOT(final UnaryNode unaryNode) {
-        load(unaryNode.rhs()).convert(Type.INT).load(-1).xor().store(unaryNode.getSymbol());
-        return false;
-    }
-
-    // do this better with convert calls to method. TODO
-    @Override
-    public boolean enterCONVERT(final UnaryNode unaryNode) {
-        final Expression rhs = unaryNode.rhs();
-        final Type to  = unaryNode.getType();
-
-        if (to.isObject() && rhs instanceof LiteralNode) {
-            final LiteralNode<?> literalNode = (LiteralNode<?>)rhs;
-            final Object value = literalNode.getValue();
-
-            if (value instanceof Number) {
-                assert !to.isArray() : "type hygiene - cannot convert number to array: (" + to.getTypeClass().getSimpleName() + ')' + value;
-                if (value instanceof Integer) {
-                    method.load((Integer)value);
-                } else if (value instanceof Long) {
-                    method.load((Long)value);
-                } else if (value instanceof Double) {
-                    method.load((Double)value);
-                } else {
-                    assert false;
-                }
-                method.convert(Type.OBJECT);
-            } else if (value instanceof Boolean) {
-                method.getField(staticField(Boolean.class, value.toString().toUpperCase(Locale.ENGLISH), Boolean.class));
-            } else {
-                load(rhs);
-                method.convert(unaryNode.getType());
-            }
-        } else {
-            load(rhs);
-            method.convert(unaryNode.getType());
-        }
-
-        method.store(unaryNode.getSymbol());
-
+        load(unaryNode.rhs(), Type.INT).load(-1).xor().store(unaryNode.getSymbol());
         return false;
     }
 
@@ -2274,9 +2305,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
             @Override
             protected void evaluate() {
-                load(rhs, true);
-
-                method.convert(type);
+                load(rhs, type, true);
                 if (!isPostfix) {
                     if (type.isInteger()) {
                         method.load(isIncrement ? 1 : -1);
@@ -2330,7 +2359,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         final List<Expression> args   = callNode.getArgs();
 
         // Load function reference.
-        load(callNode.getFunction()).convert(Type.OBJECT); // must detect type error
+        load(callNode.getFunction(), Type.OBJECT); // must detect type error
 
         method.dynamicNew(1 + loadArgs(args), getCallSiteFlags());
         method.store(unaryNode.getSymbol());
@@ -2342,12 +2371,11 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
     public boolean enterNOT(final UnaryNode unaryNode) {
         final Expression rhs = unaryNode.rhs();
 
-        load(rhs);
+        load(rhs, Type.BOOLEAN);
 
         final Label trueLabel  = new Label("true");
         final Label afterLabel = new Label("after");
 
-        method.convert(Type.BOOLEAN);
         method.ifne(trueLabel);
         method.load(true);
         method._goto(afterLabel);
@@ -2361,8 +2389,8 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
     @Override
     public boolean enterSUB(final UnaryNode unaryNode) {
-        load(unaryNode.rhs()).neg().store(unaryNode.getSymbol());
-
+        assert unaryNode.getType().isNumeric();
+        load(unaryNode.rhs(), unaryNode.getType()).neg().store(unaryNode.getSymbol());
         return false;
     }
 
@@ -2375,9 +2403,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
     }
 
     private void enterNumericAdd(final Expression lhs, final Expression rhs, final Type type, final Symbol symbol) {
-        assert lhs.getType().equals(rhs.getType()) && lhs.getType().equals(type) : lhs.getType() + " != " + rhs.getType() + " != " + type + " " + new ASTWriter(lhs) + " " + new ASTWriter(rhs);
-        load(lhs);
-        load(rhs);
+        loadBinaryOperands(lhs, rhs, type);
         method.add(); //if the symbol is optimistic, it always needs to be written, not on the stack?
         method.store(symbol);
     }
@@ -2391,8 +2417,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         if (type.isNumeric()) {
             enterNumericAdd(lhs, rhs, type, binaryNode.getSymbol());
         } else {
-            load(lhs).convert(Type.OBJECT);
-            load(rhs).convert(Type.OBJECT);
+            loadBinaryOperands(binaryNode);
             method.add();
             method.store(binaryNode.getSymbol());
         }
@@ -2406,7 +2431,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
         final Label skip = new Label("skip");
 
-        load(lhs).convert(Type.OBJECT).dup().convert(Type.BOOLEAN);
+        load(lhs, Type.OBJECT).dup().convert(Type.BOOLEAN);
 
         if (binaryNode.tokenType() == TokenType.AND) {
             method.ifeq(skip);
@@ -2415,7 +2440,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         }
 
         method.pop();
-        load(rhs).convert(Type.OBJECT);
+        load(rhs, Type.OBJECT);
         method.label(skip);
         method.store(binaryNode.getSymbol());
 
@@ -2437,13 +2462,16 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
         if (!lhsType.isEquivalentTo(rhsType)) {
             //this is OK if scoped, only locals are wrong
-            assert !(lhs instanceof IdentNode) || lhs.getSymbol().isScope() : new ASTWriter(binaryNode);
         }
 
         new Store<BinaryNode>(binaryNode, lhs) {
             @Override
             protected void evaluate() {
-                load(rhs);
+                if ((lhs instanceof IdentNode) && !lhs.getSymbol().isScope()) {
+                    load(rhs, lhsType);
+                } else {
+                    load(rhs);
+                }
             }
         }.store();
 
@@ -2482,8 +2510,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
         @Override
         protected void evaluate() {
-            load(assignNode.lhs(), true).convert(opType);
-            load(assignNode.rhs()).convert(opType);
+            loadBinaryOperands(assignNode.lhs(), assignNode.rhs(), opType, true);
             op();
             method.convert(assignNode.getType());
         }
@@ -2654,8 +2681,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         protected abstract void op();
 
         protected void evaluate(final BinaryNode node) {
-            load(node.lhs());
-            load(node.rhs());
+            loadBinaryOperands(node);
             op();
             method.store(node.getSymbol());
         }
@@ -2737,11 +2763,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         final Type widest = Type.widest(lhsType, rhsType);
         assert widest.isNumeric() || widest.isBoolean() : widest;
 
-        load(lhs);
-        method.convert(widest);
-        load(rhs);
-        method.convert(widest);
-
+        loadBinaryOperands(lhs, rhs, widest);
         final Label trueLabel  = new Label("trueLabel");
         final Label afterLabel = new Label("skip");
 
@@ -2860,6 +2882,12 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
     public boolean enterSHR(final BinaryNode binaryNode) {
         new BinaryArith() {
             @Override
+            protected void evaluate(final BinaryNode node) {
+                loadBinaryOperands(node.lhs(), node.rhs(), Type.INT);
+                op();
+                method.store(node.getSymbol());
+            }
+            @Override
             protected void op() {
                 method.shr();
                 method.convert(Type.LONG).load(JSType.MAX_UINT).and();
@@ -2891,26 +2919,22 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
         final Label  falseLabel = new Label("ternary_false");
         final Label  exitLabel  = new Label("ternary_exit");
 
-        Type widest = Type.widest(trueExpr.getType(), falseExpr.getType());
+        Type widest = Type.widest(ternaryNode.getType(), Type.widest(trueExpr.getType(), falseExpr.getType()));
         if (trueExpr.getType().isArray() || falseExpr.getType().isArray()) { //loadArray creates a Java array type on the stack, calls global allocate, which creates a native array type
             widest = Type.OBJECT;
         }
 
-        load(test);
-        assert test.getType().isBoolean() : "lhs in ternary must be boolean";
-
+        load(test, Type.BOOLEAN);
         // we still keep the conversion here as the AccessSpecializer can have separated the types, e.g. var y = x ? x=55 : 17
         // will left as (Object)x=55 : (Object)17 by Lower. Then the first term can be {I}x=55 of type int, which breaks the
         // symmetry for the temporary slot for this TernaryNode. This is evidence that we assign types and explicit conversions
-        // to early, or Apply the AccessSpecializer too late. We are mostly probably looking for a separate type pass to
+        // too early, or Apply the AccessSpecializer too late. We are mostly probably looking for a separate type pass to
         // do this property. Then we never need any conversions in CodeGenerator
         method.ifeq(falseLabel);
-        load(trueExpr);
-        method.convert(widest);
+        load(trueExpr, widest);
         method._goto(exitLabel);
         method.label(falseLabel);
-        load(falseExpr);
-        method.convert(widest);
+        load(falseExpr, widest);
         method.label(exitLabel);
         method.store(symbol);
 
@@ -3042,8 +3066,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
                     final BaseNode   baseNode = (BaseNode)target;
                     final Expression base     = baseNode.getBase();
 
-                    load(base);
-                    method.convert(Type.OBJECT);
+                    load(base, Type.OBJECT);
                     depth += Type.OBJECT.getSlots();
 
                     if (isSelfModifying()) {
@@ -3062,10 +3085,11 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
                     enterBaseNode();
 
                     final Expression index = node.getIndex();
-                    // could be boolean here as well
-                    load(index);
                     if (!index.getType().isNumeric()) {
-                        method.convert(Type.OBJECT);
+                        // could be boolean here as well
+                        load(index, Type.OBJECT);
+                    } else {
+                        load(index);
                     }
                     depth += index.getType().getSlots();
 
@@ -3134,8 +3158,6 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
              * need to do a conversion on non-equivalent types exists, but is
              * very rare. See for example test/script/basic/access-specializer.js
              */
-            method.convert(target.getType());
-
             target.accept(new NodeVisitor<LexicalContext>(new LexicalContext()) {
                 @Override
                 protected boolean enterDefault(Node node) {
@@ -3143,24 +3165,17 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
                 }
 
                 @Override
-                public boolean enterUnaryNode(final UnaryNode node) {
-                    if (node.tokenType() == TokenType.CONVERT && node.getSymbol() != null) {
-                        method.convert(node.rhs().getType());
-                    }
-                    return true;
-                }
-
-                @Override
                 public boolean enterIdentNode(final IdentNode node) {
                     final Symbol symbol = node.getSymbol();
                     assert symbol != null;
                     if (symbol.isScope()) {
                         if (isFastScope(symbol)) {
-                            storeFastScopeVar(node.getType(), symbol, CALLSITE_SCOPE | getCallSiteFlags());
+                            storeFastScopeVar(symbol, CALLSITE_SCOPE | getCallSiteFlags());
                         } else {
-                            method.dynamicSet(node.getType(), node.getName(), CALLSITE_SCOPE | getCallSiteFlags());
+                            method.dynamicSet(node.getName(), CALLSITE_SCOPE | getCallSiteFlags());
                         }
                     } else {
+                        method.convert(node.getType());
                         method.store(symbol);
                     }
                     return false;
@@ -3169,7 +3184,7 @@ final class CodeGenerator extends NodeOperatorVisitor<CodeGeneratorLexicalContex
 
                 @Override
                 public boolean enterAccessNode(final AccessNode node) {
-                    method.dynamicSet(node.getProperty().getType(), node.getProperty().getName(), getCallSiteFlags());
+                    method.dynamicSet(node.getProperty().getName(), getCallSiteFlags());
                     return false;
                 }
 
diff --git a/src/jdk/nashorn/internal/codegen/CompilationPhase.java b/src/jdk/nashorn/internal/codegen/CompilationPhase.java
index be8faab9..6c0a673d 100644
--- a/src/jdk/nashorn/internal/codegen/CompilationPhase.java
+++ b/src/jdk/nashorn/internal/codegen/CompilationPhase.java
@@ -162,7 +162,7 @@ enum CompilationPhase {
     LOWERING_PHASE(EnumSet.of(INITIALIZED, PARSED, CONSTANT_FOLDED)) {
         @Override
         FunctionNode transform(final Compiler compiler, final FunctionNode fn) {
-            return (FunctionNode)fn.accept(new Lower());
+            return (FunctionNode)fn.accept(new Lower(compiler.getCodeInstaller()));
         }
 
         @Override
diff --git a/src/jdk/nashorn/internal/codegen/CompileUnit.java b/src/jdk/nashorn/internal/codegen/CompileUnit.java
index 0156716d..73127259 100644
--- a/src/jdk/nashorn/internal/codegen/CompileUnit.java
+++ b/src/jdk/nashorn/internal/codegen/CompileUnit.java
@@ -28,7 +28,7 @@ package jdk.nashorn.internal.codegen;
 /**
  * Used to track split class compilation.
  */
-public class CompileUnit {
+public class CompileUnit implements Comparable<CompileUnit> {
     /** Current class name */
     private final String className;
 
@@ -116,4 +116,9 @@ public class CompileUnit {
     public String toString() {
         return "[classname=" + className + " weight=" + weight + '/' + Splitter.SPLIT_THRESHOLD + ']';
     }
+
+    @Override
+    public int compareTo(CompileUnit o) {
+        return className.compareTo(o.className);
+    }
 }
diff --git a/src/jdk/nashorn/internal/codegen/Compiler.java b/src/jdk/nashorn/internal/codegen/Compiler.java
index a31358f6..24173c3e 100644
--- a/src/jdk/nashorn/internal/codegen/Compiler.java
+++ b/src/jdk/nashorn/internal/codegen/Compiler.java
@@ -36,8 +36,6 @@ import static jdk.nashorn.internal.codegen.CompilerConstants.SOURCE;
 import static jdk.nashorn.internal.codegen.CompilerConstants.THIS;
 import static jdk.nashorn.internal.codegen.CompilerConstants.VARARGS;
 
-import jdk.nashorn.internal.ir.TemporarySymbols;
-
 import java.io.File;
 import java.lang.reflect.Field;
 import java.security.AccessController;
@@ -48,18 +46,20 @@ import java.util.Collections;
 import java.util.Comparator;
 import java.util.EnumSet;
 import java.util.HashMap;
-import java.util.HashSet;
+import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.TreeSet;
 import java.util.logging.Level;
 import jdk.internal.dynalink.support.NameCodec;
 import jdk.nashorn.internal.codegen.ClassEmitter.Flag;
 import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.FunctionNode;
 import jdk.nashorn.internal.ir.FunctionNode.CompilationState;
+import jdk.nashorn.internal.ir.TemporarySymbols;
 import jdk.nashorn.internal.ir.debug.ClassHistogramElement;
 import jdk.nashorn.internal.ir.debug.ObjectSizeCalculator;
 import jdk.nashorn.internal.runtime.CodeInstaller;
@@ -256,8 +256,8 @@ public final class Compiler {
         this.sequence      = sequence;
         this.installer     = installer;
         this.constantData  = new ConstantData();
-        this.compileUnits  = new HashSet<>();
-        this.bytecode      = new HashMap<>();
+        this.compileUnits  = new TreeSet<>();
+        this.bytecode      = new LinkedHashMap<>();
     }
 
     private void initCompiler(final FunctionNode functionNode) {
diff --git a/src/jdk/nashorn/internal/codegen/FinalizeTypes.java b/src/jdk/nashorn/internal/codegen/FinalizeTypes.java
index 63c1fdb7..15341484 100644
--- a/src/jdk/nashorn/internal/codegen/FinalizeTypes.java
+++ b/src/jdk/nashorn/internal/codegen/FinalizeTypes.java
@@ -28,49 +28,22 @@ package jdk.nashorn.internal.codegen;
 import static jdk.nashorn.internal.codegen.CompilerConstants.CALLEE;
 import static jdk.nashorn.internal.codegen.CompilerConstants.SCOPE;
 
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-import jdk.nashorn.internal.codegen.types.Type;
-import jdk.nashorn.internal.ir.AccessNode;
-import jdk.nashorn.internal.ir.Assignment;
 import jdk.nashorn.internal.ir.BinaryNode;
 import jdk.nashorn.internal.ir.Block;
-import jdk.nashorn.internal.ir.CallNode;
-import jdk.nashorn.internal.ir.CaseNode;
-import jdk.nashorn.internal.ir.CatchNode;
 import jdk.nashorn.internal.ir.Expression;
 import jdk.nashorn.internal.ir.ExpressionStatement;
 import jdk.nashorn.internal.ir.ForNode;
 import jdk.nashorn.internal.ir.FunctionNode;
 import jdk.nashorn.internal.ir.FunctionNode.CompilationState;
-import jdk.nashorn.internal.ir.IdentNode;
-import jdk.nashorn.internal.ir.IfNode;
-import jdk.nashorn.internal.ir.IndexNode;
 import jdk.nashorn.internal.ir.LexicalContext;
-import jdk.nashorn.internal.ir.LiteralNode;
-import jdk.nashorn.internal.ir.LiteralNode.ArrayLiteralNode;
 import jdk.nashorn.internal.ir.Node;
-import jdk.nashorn.internal.ir.ReturnNode;
-import jdk.nashorn.internal.ir.RuntimeNode;
-import jdk.nashorn.internal.ir.RuntimeNode.Request;
-import jdk.nashorn.internal.ir.SwitchNode;
 import jdk.nashorn.internal.ir.Symbol;
 import jdk.nashorn.internal.ir.TemporarySymbols;
-import jdk.nashorn.internal.ir.TernaryNode;
-import jdk.nashorn.internal.ir.ThrowNode;
-import jdk.nashorn.internal.ir.TypeOverride;
 import jdk.nashorn.internal.ir.UnaryNode;
-import jdk.nashorn.internal.ir.VarNode;
-import jdk.nashorn.internal.ir.WhileNode;
-import jdk.nashorn.internal.ir.WithNode;
 import jdk.nashorn.internal.ir.visitor.NodeOperatorVisitor;
-import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 import jdk.nashorn.internal.parser.Token;
 import jdk.nashorn.internal.parser.TokenType;
-import jdk.nashorn.internal.runtime.Debug;
 import jdk.nashorn.internal.runtime.DebugLogger;
-import jdk.nashorn.internal.runtime.JSType;
 
 /**
  * Lower to more primitive operations. After lowering, an AST has symbols and
@@ -97,272 +70,32 @@ final class FinalizeTypes extends NodeOperatorVisitor<LexicalContext> {
     }
 
     @Override
-    public Node leaveCallNode(final CallNode callNode) {
-        // AccessSpecializer - call return type may change the access for this location
-        final Node function = callNode.getFunction();
-        if (function instanceof FunctionNode) {
-            return setTypeOverride(callNode, ((FunctionNode)function).getReturnType());
-        }
-        return callNode;
-    }
-
-    private Node leaveUnary(final UnaryNode unaryNode) {
-        return unaryNode.setRHS(convert(unaryNode.rhs(), unaryNode.getType()));
-    }
-
-    @Override
-    public Node leaveADD(final UnaryNode unaryNode) {
-        return leaveUnary(unaryNode);
-    }
-
-    @Override
-    public Node leaveBIT_NOT(final UnaryNode unaryNode) {
-        return leaveUnary(unaryNode);
-    }
-
-    @Override
-    public Node leaveCONVERT(final UnaryNode unaryNode) {
-        assert unaryNode.rhs().tokenType() != TokenType.CONVERT : "convert(convert encountered. check its origin and remove it";
-        return unaryNode;
-    }
-
-    @Override
-    public Node leaveDECINC(final UnaryNode unaryNode) {
-        return specialize(unaryNode).node;
-    }
-
-    @Override
-    public Node leaveNEW(final UnaryNode unaryNode) {
-        assert unaryNode.getSymbol() != null && unaryNode.getSymbol().getSymbolType().isObject();
-        return unaryNode.setRHS(((CallNode)unaryNode.rhs()).setIsNew());
-    }
-
-    @Override
-    public Node leaveSUB(final UnaryNode unaryNode) {
-        return leaveUnary(unaryNode);
-    }
-
-    /**
-     * Add is a special binary, as it works not only on arithmetic, but for
-     * strings etc as well.
-     */
-    @Override
-    public Expression leaveADD(final BinaryNode binaryNode) {
-        final Expression lhs = binaryNode.lhs();
-        final Expression rhs = binaryNode.rhs();
-
-        final Type type = binaryNode.getType();
-
-        if (type.isObject()) {
-            if (!isAddString(binaryNode)) {
-                return new RuntimeNode(binaryNode, Request.ADD);
-            }
-        }
-
-        return binaryNode.setLHS(convert(lhs, type)).setRHS(convert(rhs, type));
-    }
-
-    @Override
-    public Node leaveAND(final BinaryNode binaryNode) {
-        return binaryNode;
-    }
-
-    @Override
-    public Node leaveASSIGN(final BinaryNode binaryNode) {
-        final SpecializedNode specialized = specialize(binaryNode);
-        final BinaryNode specBinaryNode = (BinaryNode)specialized.node;
-        Type destType = specialized.type;
-        if (destType == null) {
-            destType = specBinaryNode.getType();
-        }
-        // Register assignments to this object in case this is used as constructor
-        if (binaryNode.lhs() instanceof AccessNode) {
-            AccessNode accessNode = (AccessNode) binaryNode.lhs();
-
-            if (accessNode.getBase().getSymbol().isThis()) {
-                lc.getCurrentFunction().addThisProperty(accessNode.getProperty().getName());
-            }
+    public Node leaveForNode(final ForNode forNode) {
+        if (forNode.isForIn()) {
+            return forNode;
         }
-        return specBinaryNode.setRHS(convert(specBinaryNode.rhs(), destType));
-    }
-
-    @Override
-    public Node leaveASSIGN_ADD(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_BIT_AND(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_BIT_OR(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_BIT_XOR(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_DIV(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_MOD(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_MUL(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_SAR(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_SHL(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_SHR(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    @Override
-    public Node leaveASSIGN_SUB(final BinaryNode binaryNode) {
-        return leaveASSIGN(binaryNode);
-    }
-
-    private boolean symbolIsInteger(final Expression node) {
-        final Symbol symbol = node.getSymbol();
-        assert symbol != null && symbol.getSymbolType().isInteger() : "int coercion expected: " + Debug.id(symbol) + " " + symbol + " " + lc.getCurrentFunction().getSource();
-        return true;
-    }
 
-    @Override
-    public Node leaveBIT_AND(final BinaryNode binaryNode) {
-        assert symbolIsInteger(binaryNode);
-        return leaveBinary(binaryNode, Type.INT, Type.INT);
-    }
+        final Expression init   = forNode.getInit();
+        final Expression test   = forNode.getTest();
+        final Expression modify = forNode.getModify();
 
-    @Override
-    public Node leaveBIT_OR(final BinaryNode binaryNode) {
-        assert symbolIsInteger(binaryNode);
-        return leaveBinary(binaryNode, Type.INT, Type.INT);
-    }
+        assert test != null || forNode.hasGoto() : "forNode " + forNode + " needs goto and is missing it in " + lc.getCurrentFunction();
 
-    @Override
-    public Node leaveBIT_XOR(final BinaryNode binaryNode) {
-        assert symbolIsInteger(binaryNode);
-        return leaveBinary(binaryNode, Type.INT, Type.INT);
+        return forNode.
+            setInit(lc, init == null ? null : discard(init)).
+            setModify(lc, modify == null ? null : discard(modify));
     }
 
     @Override
     public Node leaveCOMMALEFT(final BinaryNode binaryNode) {
         assert binaryNode.getSymbol() != null;
-        final BinaryNode newBinaryNode = binaryNode.setRHS(discard(binaryNode.rhs()));
-        // AccessSpecializer - the type of lhs, which is the remaining value of this node may have changed
-        // in that case, update the node type as well
-        return propagateType(newBinaryNode, newBinaryNode.lhs().getType());
+        return binaryNode.setRHS(discard(binaryNode.rhs()));
     }
 
     @Override
     public Node leaveCOMMARIGHT(final BinaryNode binaryNode) {
         assert binaryNode.getSymbol() != null;
-        final BinaryNode newBinaryNode = binaryNode.setLHS(discard(binaryNode.lhs()));
-        // AccessSpecializer - the type of rhs, which is the remaining value of this node may have changed
-        // in that case, update the node type as well
-        return propagateType(newBinaryNode, newBinaryNode.rhs().getType());
-    }
-
-    @Override
-    public Node leaveDIV(final BinaryNode binaryNode) {
-        return leaveBinaryArith(binaryNode);
-    }
-
-
-    @Override
-    public Node leaveEQ(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.EQ);
-    }
-
-    @Override
-    public Node leaveEQ_STRICT(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.EQ_STRICT);
-    }
-
-    @Override
-    public Node leaveGE(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.GE);
-    }
-
-    @Override
-    public Node leaveGT(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.GT);
-    }
-
-    @Override
-    public Node leaveLE(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.LE);
-    }
-
-    @Override
-    public Node leaveLT(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.LT);
-    }
-
-    @Override
-    public Node leaveMOD(final BinaryNode binaryNode) {
-        return leaveBinaryArith(binaryNode);
-    }
-
-    @Override
-    public Node leaveMUL(final BinaryNode binaryNode) {
-        return leaveBinaryArith(binaryNode);
-    }
-
-    @Override
-    public Node leaveNE(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.NE);
-    }
-
-    @Override
-    public Node leaveNE_STRICT(final BinaryNode binaryNode) {
-        return leaveCmp(binaryNode, Request.NE_STRICT);
-    }
-
-    @Override
-    public Node leaveOR(final BinaryNode binaryNode) {
-        return binaryNode;
-    }
-
-    @Override
-    public Node leaveSAR(final BinaryNode binaryNode) {
-        return leaveBinary(binaryNode, Type.INT, Type.INT);
-    }
-
-    @Override
-    public Node leaveSHL(final BinaryNode binaryNode) {
-        return leaveBinary(binaryNode, Type.INT, Type.INT);
-    }
-
-    @Override
-    public Node leaveSHR(final BinaryNode binaryNode) {
-        assert binaryNode.getSymbol() != null && binaryNode.getSymbol().getSymbolType().isLong() : "long coercion expected: " + binaryNode.getSymbol();
-        return leaveBinary(binaryNode, Type.INT, Type.INT);
-    }
-
-    @Override
-    public Node leaveSUB(final BinaryNode binaryNode) {
-        return leaveBinaryArith(binaryNode);
+        return binaryNode.setLHS(discard(binaryNode.lhs()));
     }
 
     @Override
@@ -372,38 +105,12 @@ final class FinalizeTypes extends NodeOperatorVisitor<LexicalContext> {
     }
 
     @Override
-    public Node leaveCatchNode(final CatchNode catchNode) {
-        final Expression exceptionCondition = catchNode.getExceptionCondition();
-        if (exceptionCondition != null) {
-            return catchNode.setExceptionCondition(convert(exceptionCondition, Type.BOOLEAN));
-        }
-        return catchNode;
-    }
-
-    @Override
     public Node leaveExpressionStatement(final ExpressionStatement expressionStatement) {
         temporarySymbols.reuse();
         return expressionStatement.setExpression(discard(expressionStatement.getExpression()));
     }
 
     @Override
-    public Node leaveForNode(final ForNode forNode) {
-        final Expression init   = forNode.getInit();
-        final Expression test   = forNode.getTest();
-        final Expression modify = forNode.getModify();
-
-        if (forNode.isForIn()) {
-            return forNode.setModify(lc, convert(forNode.getModify(), Type.OBJECT)); // NASHORN-400
-        }
-        assert test != null || forNode.hasGoto() : "forNode " + forNode + " needs goto and is missing it in " + lc.getCurrentFunction();
-
-        return forNode.
-            setInit(lc, init == null ? null : discard(init)).
-            setTest(lc, test == null ? null : convert(test, Type.BOOLEAN)).
-            setModify(lc, modify == null ? null : discard(modify));
-    }
-
-    @Override
     public boolean enterFunctionNode(final FunctionNode functionNode) {
         if (functionNode.isLazy()) {
             return false;
@@ -430,113 +137,6 @@ final class FinalizeTypes extends NodeOperatorVisitor<LexicalContext> {
         return functionNode.setState(lc, CompilationState.FINALIZED);
     }
 
-    @Override
-    public Node leaveIfNode(final IfNode ifNode) {
-        return ifNode.setTest(convert(ifNode.getTest(), Type.BOOLEAN));
-    }
-
-    @SuppressWarnings("rawtypes")
-    @Override
-    public boolean enterLiteralNode(final LiteralNode literalNode) {
-        if (literalNode instanceof ArrayLiteralNode) {
-            final ArrayLiteralNode arrayLiteralNode = (ArrayLiteralNode)literalNode;
-            final Expression[]     array            = arrayLiteralNode.getValue();
-            final Type             elementType      = arrayLiteralNode.getElementType();
-
-            for (int i = 0; i < array.length; i++) {
-                final Node element = array[i];
-                if (element != null) {
-                    array[i] = convert((Expression)element.accept(this), elementType);
-                }
-            }
-        }
-
-        return false;
-    }
-
-    @Override
-    public Node leaveReturnNode(final ReturnNode returnNode) {
-        final Expression expr = returnNode.getExpression();
-        if (expr != null) {
-            return returnNode.setExpression(convert(expr, lc.getCurrentFunction().getReturnType()));
-        }
-        return returnNode;
-    }
-
-    @Override
-    public Node leaveRuntimeNode(final RuntimeNode runtimeNode) {
-        final List<Expression> args = runtimeNode.getArgs();
-        for (final Expression arg : args) {
-            assert !arg.getType().isUnknown();
-        }
-        return runtimeNode;
-    }
-
-    @Override
-    public Node leaveSwitchNode(final SwitchNode switchNode) {
-        final boolean allInteger = switchNode.getTag().getSymbolType().isInteger();
-
-        if (allInteger) {
-            return switchNode;
-        }
-
-        final Expression     expression  = switchNode.getExpression();
-        final List<CaseNode> cases       = switchNode.getCases();
-        final List<CaseNode> newCases    = new ArrayList<>();
-
-        for (final CaseNode caseNode : cases) {
-            final Expression test = caseNode.getTest();
-            newCases.add(test != null ? caseNode.setTest(convert(test, Type.OBJECT)) : caseNode);
-        }
-
-        return switchNode.
-            setExpression(lc, convert(expression, Type.OBJECT)).
-            setCases(lc, newCases);
-    }
-
-    @Override
-    public Node leaveTernaryNode(final TernaryNode ternaryNode) {
-        return ternaryNode.setTest(convert(ternaryNode.getTest(), Type.BOOLEAN));
-    }
-
-    @Override
-    public Node leaveThrowNode(final ThrowNode throwNode) {
-        return throwNode.setExpression(convert(throwNode.getExpression(), Type.OBJECT));
-    }
-
-    @Override
-    public Node leaveVarNode(final VarNode varNode) {
-        final Expression init = varNode.getInit();
-        if (init != null) {
-            final SpecializedNode specialized = specialize(varNode);
-            final VarNode specVarNode = (VarNode)specialized.node;
-            Type destType = specialized.type;
-            if (destType == null) {
-                destType = specVarNode.getName().getType();
-            }
-            assert specVarNode.getName().hasType() : specVarNode + " doesn't have a type";
-            final Expression convertedInit = convert(init, destType);
-            temporarySymbols.reuse();
-            return specVarNode.setInit(convertedInit);
-        }
-        temporarySymbols.reuse();
-        return varNode;
-    }
-
-    @Override
-    public Node leaveWhileNode(final WhileNode whileNode) {
-        final Expression test = whileNode.getTest();
-        if (test != null) {
-            return whileNode.setTest(lc, convert(test, Type.BOOLEAN));
-        }
-        return whileNode;
-    }
-
-    @Override
-    public Node leaveWithNode(final WithNode withNode) {
-        return withNode.setExpression(lc, convert(withNode.getExpression(), Type.OBJECT));
-    }
-
     private static void updateSymbolsLog(final FunctionNode functionNode, final Symbol symbol, final boolean loseSlot) {
         if (LOG.isEnabled()) {
             if (!symbol.isScope()) {
@@ -583,260 +183,6 @@ final class FinalizeTypes extends NodeOperatorVisitor<LexicalContext> {
         }
     }
 
-    /**
-     * Exit a comparison node and do the appropriate replacements. We need to introduce runtime
-     * nodes late for comparisons as types aren't known until the last minute
-     *
-     * Both compares and adds may turn into runtimes node at this level as when we first bump
-     * into the op in Attr, we may type it according to what we know there, which may be wrong later
-     *
-     * e.g. i (int) < 5 -> normal compare
-     *     i = object
-     *  then the post pass that would add the conversion to the 5 needs to
-     *
-     * @param binaryNode binary node to leave
-     * @param request    runtime request
-     * @return lowered cmp node
-     */
-    @SuppressWarnings("fallthrough")
-    private Node leaveCmp(final BinaryNode binaryNode, final RuntimeNode.Request request) {
-        final Expression lhs    = binaryNode.lhs();
-        final Expression rhs    = binaryNode.rhs();
-
-        Type widest = Type.widest(lhs.getType(), rhs.getType());
-
-        boolean newRuntimeNode = false, finalized = false;
-        switch (request) {
-        case EQ_STRICT:
-        case NE_STRICT:
-            if (lhs.getType().isBoolean() != rhs.getType().isBoolean()) {
-                newRuntimeNode = true;
-                widest = Type.OBJECT;
-                finalized = true;
-            }
-            //fallthru
-        default:
-            if (newRuntimeNode || widest.isObject()) {
-                return new RuntimeNode(binaryNode, request).setIsFinal(finalized);
-            }
-            break;
-        }
-
-        return binaryNode.setLHS(convert(lhs, widest)).setRHS(convert(rhs, widest));
-    }
-
-    /**
-     * Compute the binary arithmetic type given the lhs and an rhs of a binary expression
-     * @param lhsType  the lhs type
-     * @param rhsType  the rhs type
-     * @return the correct binary type
-     */
-    private static Type binaryArithType(final Type lhsType, final Type rhsType) {
-        if (!Compiler.shouldUseIntegerArithmetic()) {
-            return Type.NUMBER;
-        }
-        return Type.widest(lhsType, rhsType, Type.NUMBER);
-    }
-
-    private Node leaveBinaryArith(final BinaryNode binaryNode) {
-        final Type type = binaryArithType(binaryNode.lhs().getType(), binaryNode.rhs().getType());
-        return leaveBinary(binaryNode, type, type);
-    }
-
-    private Node leaveBinary(final BinaryNode binaryNode, final Type lhsType, final Type rhsType) {
-        Node b =  binaryNode.setLHS(convert(binaryNode.lhs(), lhsType)).setRHS(convert(binaryNode.rhs(), rhsType));
-        return b;
-    }
-
-    /**
-     * A symbol (and {@link jdk.nashorn.internal.runtime.Property}) can be tagged as "may be primitive".
-     * This is used a hint for dual fields that it is even worth it to try representing this
-     * field as something other than java.lang.Object.
-     *
-     * @param node node in which to tag symbols as primitive
-     * @param to   which primitive type to use for tagging
-     */
-    private static void setCanBePrimitive(final Node node, final Type to) {
-        final HashSet<Node> exclude = new HashSet<>();
-
-        node.accept(new NodeVisitor<LexicalContext>(new LexicalContext()) {
-            private void setCanBePrimitive(final Symbol symbol) {
-                LOG.info("*** can be primitive symbol ", symbol, " ", Debug.id(symbol));
-                symbol.setCanBePrimitive(to);
-            }
-
-            @Override
-            public boolean enterIdentNode(final IdentNode identNode) {
-                if (!exclude.contains(identNode)) {
-                    setCanBePrimitive(identNode.getSymbol());
-                }
-                return false;
-            }
-
-            @Override
-            public boolean enterAccessNode(final AccessNode accessNode) {
-                setCanBePrimitive(accessNode.getProperty().getSymbol());
-                return false;
-            }
-
-            @Override
-            public boolean enterIndexNode(final IndexNode indexNode) {
-                exclude.add(indexNode.getBase()); //prevent array base node to be flagged as primitive, but k in a[k++] is fine
-                return true;
-            }
-        });
-    }
-
-    private static class SpecializedNode {
-        final Node node;
-        final Type type;
-
-        SpecializedNode(Node node, Type type) {
-            this.node = node;
-            this.type = type;
-        }
-    }
-
-    <T extends Expression> SpecializedNode specialize(final Assignment<T> assignment) {
-        final Node node = ((Node)assignment);
-        final T lhs = assignment.getAssignmentDest();
-        final Expression rhs = assignment.getAssignmentSource();
-
-        if (!canHaveCallSiteType(lhs)) {
-            return new SpecializedNode(node, null);
-        }
-
-        final Type to;
-        if (node.isSelfModifying()) {
-            to = node.getWidestOperationType();
-        } else {
-            to = rhs.getType();
-        }
-
-        if (!isSupportedCallSiteType(to)) {
-            //meaningless to specialize to boolean or object
-            return new SpecializedNode(node, null);
-        }
-
-        final Node newNode = assignment.setAssignmentDest(setTypeOverride(lhs, to));
-        final Node typePropagatedNode;
-        if(newNode instanceof Expression) {
-            typePropagatedNode = propagateType((Expression)newNode, to);
-        } else if(newNode instanceof VarNode) {
-            // VarNode, being a statement, doesn't have its own symbol; it uses the symbol of its name instead.
-            final VarNode varNode = (VarNode)newNode;
-            typePropagatedNode = varNode.setName((IdentNode)propagateType(varNode.getName(), to));
-        } else {
-            throw new AssertionError();
-        }
-        return new SpecializedNode(typePropagatedNode, to);
-    }
-
-
-    /**
-     * Is this a node that can have its type overridden. This is true for
-     * AccessNodes, IndexNodes and IdentNodes
-     *
-     * @param node the node to check
-     * @return true if node can have a callsite type
-     */
-    private static boolean canHaveCallSiteType(final Node node) {
-        return node instanceof TypeOverride && ((TypeOverride<?>)node).canHaveCallSiteType();
-    }
-
-    /**
-     * Is the specialization type supported. Currently we treat booleans as objects
-     * and have no special boolean type accessor, thus booleans are ignored.
-     * TODO - support booleans? NASHORN-590
-     *
-     * @param castTo the type to check
-     * @return true if call site type is supported
-     */
-    private static boolean isSupportedCallSiteType(final Type castTo) {
-        return castTo.isNumeric(); // don't specializable for boolean
-    }
-
-    /**
-     * Override the type of a node for e.g. access specialization of scope
-     * objects. Normally a variable can only get a wider type and narrower type
-     * sets are ignored. Not that a variable can still be on object type as
-     * per the type analysis, but a specific access may be narrower, e.g. if it
-     * is used in an arithmetic op. This overrides a type, regardless of
-     * type environment and is used primarily by the access specializer
-     *
-     * @param node    node for which to change type
-     * @param to      new type
-     */
-    @SuppressWarnings("unchecked")
-    <T extends Expression> T setTypeOverride(final T node, final Type to) {
-        final Type from = node.getType();
-        if (!node.getType().equals(to)) {
-            LOG.info("Changing call override type for '", node, "' from ", node.getType(), " to ", to);
-            if (!to.isObject() && from.isObject()) {
-                setCanBePrimitive(node, to);
-            }
-        }
-        LOG.info("Type override for lhs in '", node, "' => ", to);
-        return ((TypeOverride<T>)node).setType(temporarySymbols, lc, to);
-    }
-
-    /**
-     * Add an explicit conversion. This is needed when attribution has created types
-     * that do not mesh into an op type, e.g. a = b, where b is object and a is double
-     * at the end of Attr, needs explicit conversion logic.
-     *
-     * An explicit conversion can be one of the following:
-     *   + Convert a literal - just replace it with another literal
-     *   + Convert a scope object - just replace the type of the access, e.g. get()D->get()I
-     *   + Explicit convert placement, e.g. a = (double)b - all other cases
-     *
-     * No other part of the world after {@link Attr} may introduce new symbols. This
-     * is the only place.
-     *
-     * @param node node to convert
-     * @param to   destination type
-     * @return     conversion node
-     */
-    private Expression convert(final Expression node, final Type to) {
-        assert !to.isUnknown() : "unknown type for " + node + " class=" + node.getClass();
-        assert node != null : "node is null";
-        assert node.getSymbol() != null : "node " + node + " " + node.getClass() + " has no symbol! " + lc.getCurrentFunction();
-        assert node.tokenType() != TokenType.CONVERT : "assert convert in convert " + node + " in " + lc.getCurrentFunction();
-
-        final Type from = node.getType();
-
-        if (Type.areEquivalent(from, to)) {
-            return node;
-        }
-
-        if (from.isObject() && to.isObject()) {
-            return node;
-        }
-
-        Expression resultNode = node;
-
-        if (node instanceof LiteralNode && !(node instanceof ArrayLiteralNode) && !to.isObject()) {
-            final LiteralNode<?> newNode = new LiteralNodeConstantEvaluator((LiteralNode<?>)node, to).eval();
-            if (newNode != null) {
-                resultNode = newNode;
-            }
-        } else {
-            if (canHaveCallSiteType(node) && isSupportedCallSiteType(to)) {
-                assert node instanceof TypeOverride;
-                return setTypeOverride(node, to);
-            }
-            resultNode = new UnaryNode(Token.recast(node.getToken(), TokenType.CONVERT), node);
-        }
-
-        LOG.info("CONVERT('", node, "', ", to, ") => '", resultNode, "'");
-
-        assert !node.isTerminal();
-
-        //This is the only place in this file that can create new temporaries
-        //FinalizeTypes may not introduce ANY node that is not a conversion.
-        return temporarySymbols.ensureSymbol(lc, to, resultNode);
-    }
-
     private static Expression discard(final Expression node) {
         if (node.getSymbol() != null) {
             final UnaryNode discard = new UnaryNode(Token.recast(node.getToken(), TokenType.DISCARD), node);
@@ -849,82 +195,5 @@ final class FinalizeTypes extends NodeOperatorVisitor<LexicalContext> {
         return node;
     }
 
-    /**
-     * Whenever an expression like an addition or an assignment changes type, it
-     * may be that case that {@link Attr} created a symbol for an intermediate
-     * result of the expression, say for an addition. This also has to be updated
-     * if the expression type changes.
-     *
-     * Assignments use their lhs as node symbol, and in this case we can't modify
-     * it. Then {@link CodeGenerator.Store} needs to do an explicit conversion.
-     * This is happens very rarely.
-     *
-     * @param node
-     * @param to
-     */
-    private Expression propagateType(final Expression node, final Type to) {
-        Symbol symbol = node.getSymbol();
-        if (symbol.isTemp() && symbol.getSymbolType() != to) {
-            symbol = symbol.setTypeOverrideShared(to, temporarySymbols);
-            LOG.info("Type override for temporary in '", node, "' => ", to);
-        }
-        return node.setSymbol(lc, symbol);
-    }
-
-    /**
-     * Determine if the outcome of + operator is a string.
-     *
-     * @param node  Node to test.
-     * @return true if a string result.
-     */
-    private boolean isAddString(final Node node) {
-        if (node instanceof BinaryNode && node.isTokenType(TokenType.ADD)) {
-            final BinaryNode binaryNode = (BinaryNode)node;
-            final Node lhs = binaryNode.lhs();
-            final Node rhs = binaryNode.rhs();
-
-            return isAddString(lhs) || isAddString(rhs);
-        }
-
-        return node instanceof LiteralNode<?> && ((LiteralNode<?>)node).isString();
-    }
 
-    /**
-     * Whenever an explicit conversion is needed and the convertee is a literal, we can
-     * just change the literal
-     */
-    class LiteralNodeConstantEvaluator extends FoldConstants.ConstantEvaluator<LiteralNode<?>> {
-        private final Type type;
-
-        LiteralNodeConstantEvaluator(final LiteralNode<?> parent, final Type type) {
-            super(parent);
-            this.type = type;
-        }
-
-        @Override
-        protected LiteralNode<?> eval() {
-            final Object value = ((LiteralNode<?>)parent).getValue();
-
-            LiteralNode<?> literalNode = null;
-
-            if (type.isString()) {
-                literalNode = LiteralNode.newInstance(token, finish, JSType.toString(value));
-            } else if (type.isBoolean()) {
-                literalNode = LiteralNode.newInstance(token, finish, JSType.toBoolean(value));
-            } else if (type.isInteger()) {
-                literalNode = LiteralNode.newInstance(token, finish, JSType.toInt32(value));
-            } else if (type.isLong()) {
-                literalNode = LiteralNode.newInstance(token, finish, JSType.toLong(value));
-            } else if (type.isNumber() || parent.getType().isNumeric() && !parent.getType().isNumber()) {
-                literalNode = LiteralNode.newInstance(token, finish, JSType.toNumber(value));
-            }
-
-            if (literalNode != null) {
-                //inherit literal symbol for attr.
-                literalNode = (LiteralNode<?>)literalNode.setSymbol(lc, parent.getSymbol());
-            }
-
-            return literalNode;
-        }
-    }
 }
diff --git a/src/jdk/nashorn/internal/codegen/FoldConstants.java b/src/jdk/nashorn/internal/codegen/FoldConstants.java
index 49dfbb32..59362fa2 100644
--- a/src/jdk/nashorn/internal/codegen/FoldConstants.java
+++ b/src/jdk/nashorn/internal/codegen/FoldConstants.java
@@ -25,6 +25,8 @@
 
 package jdk.nashorn.internal.codegen;
 
+import java.util.ArrayList;
+import java.util.List;
 import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.BinaryNode;
 import jdk.nashorn.internal.ir.Block;
@@ -37,8 +39,10 @@ import jdk.nashorn.internal.ir.LexicalContext;
 import jdk.nashorn.internal.ir.LiteralNode;
 import jdk.nashorn.internal.ir.LiteralNode.ArrayLiteralNode;
 import jdk.nashorn.internal.ir.Node;
+import jdk.nashorn.internal.ir.Statement;
 import jdk.nashorn.internal.ir.TernaryNode;
 import jdk.nashorn.internal.ir.UnaryNode;
+import jdk.nashorn.internal.ir.VarNode;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 import jdk.nashorn.internal.runtime.DebugLogger;
 import jdk.nashorn.internal.runtime.JSType;
@@ -88,12 +92,22 @@ final class FoldConstants extends NodeVisitor<LexicalContext> {
     @Override
     public Node leaveIfNode(final IfNode ifNode) {
         final Node test = ifNode.getTest();
-        if (test instanceof LiteralNode) {
-            final Block shortCut = ((LiteralNode<?>)test).isTrue() ? ifNode.getPass() : ifNode.getFail();
-            if (shortCut != null) {
-                return new BlockStatement(ifNode.getLineNumber(), shortCut);
+        if (test instanceof LiteralNode.PrimitiveLiteralNode) {
+            final boolean isTrue = ((LiteralNode.PrimitiveLiteralNode<?>)test).isTrue();
+            final Block executed = isTrue ? ifNode.getPass() : ifNode.getFail();
+            final Block dropped  = isTrue ? ifNode.getFail() : ifNode.getPass();
+            final List<Statement> statements = new ArrayList<>();
+
+            if (executed != null) {
+                statements.addAll(executed.getStatements()); // Get statements form executed branch
             }
-            return new EmptyNode(ifNode);
+            if (dropped != null) {
+                extractVarNodes(dropped, statements); // Get var-nodes from non-executed branch
+            }
+            if (statements.isEmpty()) {
+                return new EmptyNode(ifNode);
+            }
+            return BlockStatement.createReplacement(ifNode, ifNode.getFinish(), statements);
         }
         return ifNode;
     }
@@ -101,8 +115,8 @@ final class FoldConstants extends NodeVisitor<LexicalContext> {
     @Override
     public Node leaveTernaryNode(final TernaryNode ternaryNode) {
         final Node test = ternaryNode.getTest();
-        if (test instanceof LiteralNode) {
-            return ((LiteralNode<?>)test).isTrue() ? ternaryNode.getTrueExpression() : ternaryNode.getFalseExpression();
+        if (test instanceof LiteralNode.PrimitiveLiteralNode) {
+            return ((LiteralNode.PrimitiveLiteralNode<?>)test).isTrue() ? ternaryNode.getTrueExpression() : ternaryNode.getFalseExpression();
         }
         return ternaryNode;
     }
@@ -131,6 +145,17 @@ final class FoldConstants extends NodeVisitor<LexicalContext> {
         protected abstract LiteralNode<?> eval();
     }
 
+    private static void extractVarNodes(final Block block, final List<Statement> statements) {
+        final LexicalContext lc = new LexicalContext();
+        block.accept(lc, new NodeVisitor<LexicalContext>(lc) {
+            @Override
+            public boolean enterVarNode(VarNode varNode) {
+                statements.add(varNode.setInit(null));
+                return false;
+            }
+        });
+    }
+
     private static class UnaryNodeConstantEvaluator extends ConstantEvaluator<UnaryNode> {
         UnaryNodeConstantEvaluator(final UnaryNode parent) {
             super(parent);
diff --git a/src/jdk/nashorn/internal/codegen/Lower.java b/src/jdk/nashorn/internal/codegen/Lower.java
index 032d27bc..bf6872fe 100644
--- a/src/jdk/nashorn/internal/codegen/Lower.java
+++ b/src/jdk/nashorn/internal/codegen/Lower.java
@@ -68,6 +68,7 @@ import jdk.nashorn.internal.ir.visitor.NodeOperatorVisitor;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 import jdk.nashorn.internal.parser.Token;
 import jdk.nashorn.internal.parser.TokenType;
+import jdk.nashorn.internal.runtime.CodeInstaller;
 import jdk.nashorn.internal.runtime.DebugLogger;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.Source;
@@ -86,10 +87,13 @@ final class Lower extends NodeOperatorVisitor<BlockLexicalContext> {
 
     private static final DebugLogger LOG = new DebugLogger("lower");
 
+    // needed only to get unique eval id
+    private final CodeInstaller<?> installer;
+
     /**
      * Constructor.
      */
-    Lower() {
+    Lower(final CodeInstaller<?> installer) {
         super(new BlockLexicalContext() {
 
             @Override
@@ -132,6 +136,7 @@ final class Lower extends NodeOperatorVisitor<BlockLexicalContext> {
                 return block.setIsTerminal(this, false);
             }
         });
+        this.installer = installer;
     }
 
     @Override
@@ -529,11 +534,17 @@ final class Lower extends NodeOperatorVisitor<BlockLexicalContext> {
      */
     private String evalLocation(final IdentNode node) {
         final Source source = lc.getCurrentFunction().getSource();
+        final int pos = node.position();
+        // Code installer is null when running with --compile-only, use 0 as id in that case
+        final long id = installer == null ? 0 : installer.getUniqueEvalId();
         return new StringBuilder().
             append(source.getName()).
             append('#').
-            append(source.getLine(node.position())).
-            append("<eval>").
+            append(source.getLine(pos)).
+            append(':').
+            append(source.getColumn(pos)).
+            append("<eval>@").
+            append(id).
             toString();
     }
 
diff --git a/src/jdk/nashorn/internal/codegen/MapCreator.java b/src/jdk/nashorn/internal/codegen/MapCreator.java
index 2921ea9e..8012adf5 100644
--- a/src/jdk/nashorn/internal/codegen/MapCreator.java
+++ b/src/jdk/nashorn/internal/codegen/MapCreator.java
@@ -134,6 +134,10 @@ public class MapCreator {
             flags |= Property.CAN_BE_UNDEFINED;
         }
 
+        if (symbol.isFunctionDeclaration()) {
+            flags |= Property.IS_FUNCTION_DECLARATION;
+        }
+
         return flags;
     }
 
diff --git a/src/jdk/nashorn/internal/codegen/MethodEmitter.java b/src/jdk/nashorn/internal/codegen/MethodEmitter.java
index 8a012ccb..9b6d12aa 100644
--- a/src/jdk/nashorn/internal/codegen/MethodEmitter.java
+++ b/src/jdk/nashorn/internal/codegen/MethodEmitter.java
@@ -69,7 +69,6 @@ import java.io.PrintStream;
 import java.lang.reflect.Array;
 import java.util.EnumSet;
 import java.util.List;
-
 import jdk.internal.dynalink.support.NameCodec;
 import jdk.internal.org.objectweb.asm.Handle;
 import jdk.internal.org.objectweb.asm.MethodVisitor;
@@ -1560,7 +1559,7 @@ public class MethodEmitter implements Emitter {
     MethodEmitter convert(final Type to) {
         final Type type = peekType().convert(method, to);
         if (type != null) {
-            if (peekType() != to) {
+            if (!peekType().isEquivalentTo(to)) {
                 debug("convert", peekType(), "->", to);
             }
             popType();
@@ -1790,15 +1789,14 @@ public class MethodEmitter implements Emitter {
      * @param name      name of property
      * @param flags     call site flags
      */
-     void dynamicSet(final Type valueType, final String name, final int flags) {
+     void dynamicSet(final String name, final int flags) {
         debug("dynamic_set", name, peekType());
 
-        Type type = valueType;
+        Type type = peekType();
         if (type.isObject() || type.isBoolean()) { //promote strings to objects etc
             type = Type.OBJECT;
             convert(Type.OBJECT); //TODO bad- until we specialize boolean setters,
         }
-
         popType(type);
         popType(Type.SCOPE);
 
diff --git a/src/jdk/nashorn/internal/codegen/Namespace.java b/src/jdk/nashorn/internal/codegen/Namespace.java
index 5de2fdf8..72f77a5b 100644
--- a/src/jdk/nashorn/internal/codegen/Namespace.java
+++ b/src/jdk/nashorn/internal/codegen/Namespace.java
@@ -81,7 +81,7 @@ public class Namespace {
                 final int count = counter + 1;
                 namespaceDirectory.put(base, count);
 
-                return base + "$" + count;
+                return base + '-' + count;
             }
         }
 
diff --git a/src/jdk/nashorn/internal/codegen/SpillObjectCreator.java b/src/jdk/nashorn/internal/codegen/SpillObjectCreator.java
index d30d5645..1339d873 100644
--- a/src/jdk/nashorn/internal/codegen/SpillObjectCreator.java
+++ b/src/jdk/nashorn/internal/codegen/SpillObjectCreator.java
@@ -32,7 +32,6 @@ import static jdk.nashorn.internal.codegen.types.Type.OBJECT;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
-
 import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.Expression;
 import jdk.nashorn.internal.ir.LiteralNode;
@@ -143,7 +142,7 @@ public class SpillObjectCreator extends ObjectCreator {
                 method.dup();
                 method.getField(Type.getInternalName(ScriptObject.class), "spill", Type.OBJECT_ARRAY.getDescriptor());
                 method.load(property.getSlot());
-                codegen.load(values.get(i)).convert(OBJECT);
+                codegen.load(values.get(i), OBJECT);
                 method.arraystore();
             }
         }
diff --git a/src/jdk/nashorn/internal/codegen/WeighNodes.java b/src/jdk/nashorn/internal/codegen/WeighNodes.java
index 9ecfccd6..f5940488 100644
--- a/src/jdk/nashorn/internal/codegen/WeighNodes.java
+++ b/src/jdk/nashorn/internal/codegen/WeighNodes.java
@@ -297,11 +297,6 @@ final class WeighNodes extends NodeOperatorVisitor<LexicalContext> {
     }
 
     @Override
-    public Node leaveCONVERT(final UnaryNode unaryNode) {
-        return unaryNodeWeight(unaryNode);
-    }
-
-    @Override
     public Node leaveDECINC(final UnaryNode unaryNode) {
          return unaryNodeWeight(unaryNode);
     }
diff --git a/src/jdk/nashorn/internal/codegen/types/BooleanType.java b/src/jdk/nashorn/internal/codegen/types/BooleanType.java
index 4331cb55..840b2910 100644
--- a/src/jdk/nashorn/internal/codegen/types/BooleanType.java
+++ b/src/jdk/nashorn/internal/codegen/types/BooleanType.java
@@ -136,8 +136,7 @@ public final class BooleanType extends Type {
             invokeStatic(method, JSType.TO_LONG);
         } else if (to.isString()) {
             invokeStatic(method, VALUE_OF);
-            invokeStatic(method, JSType.TO_PRIMITIVE);
-            invokeStatic(method, JSType.TO_STRING);
+            invokeStatic(method, JSType.TO_PRIMITIVE_TO_STRING);
         } else if (to.isObject()) {
             invokeStatic(method, VALUE_OF);
         } else {
diff --git a/src/jdk/nashorn/internal/codegen/types/ObjectType.java b/src/jdk/nashorn/internal/codegen/types/ObjectType.java
index cb2f876b..1f7a0221 100644
--- a/src/jdk/nashorn/internal/codegen/types/ObjectType.java
+++ b/src/jdk/nashorn/internal/codegen/types/ObjectType.java
@@ -153,8 +153,7 @@ class ObjectType extends Type {
         } else if (to.isBoolean()) {
             invokeStatic(method, JSType.TO_BOOLEAN);
         } else if (to.isString()) {
-            invokeStatic(method, JSType.TO_PRIMITIVE);
-            invokeStatic(method, JSType.TO_STRING);
+            invokeStatic(method, JSType.TO_PRIMITIVE_TO_STRING);
         } else {
             assert false : "Illegal conversion " + this + " -> " + to + " " + isString() + " " + toString;
         }
diff --git a/src/jdk/nashorn/internal/codegen/types/Type.java b/src/jdk/nashorn/internal/codegen/types/Type.java
index c1e8bfbb..e7c78953 100644
--- a/src/jdk/nashorn/internal/codegen/types/Type.java
+++ b/src/jdk/nashorn/internal/codegen/types/Type.java
@@ -292,6 +292,16 @@ public abstract class Type implements Comparable<Type>, BytecodeOps {
     }
 
     /**
+     * Determines whether this type represents an primitive type according to the ECMAScript specification,
+     * which includes Boolean, Number, and String.
+     *
+     * @return true if a JavaScript primitive type, false otherwise.
+     */
+    public boolean isJSPrimitive() {
+        return !isObject() || isString();
+    }
+
+    /**
      * Determines whether a type is the BOOLEAN type
      * @return true if BOOLEAN, false otherwise
      */
@@ -441,7 +451,12 @@ public abstract class Type implements Comparable<Type>, BytecodeOps {
         if (type0.isArray() && type1.isArray()) {
             return ((ArrayType)type0).getElementType() == ((ArrayType)type1).getElementType() ? type0 : Type.OBJECT;
         } else if (type0.isArray() != type1.isArray()) {
-            return Type.OBJECT; //array and non array is always object, widest(Object[], int) NEVER returns Object[], which has most weight. that does not make sense
+            //array and non array is always object, widest(Object[], int) NEVER returns Object[], which has most weight. that does not make sense
+            return Type.OBJECT;
+        } else if (type0.isObject() && type1.isObject() && type0.getTypeClass() != type1.getTypeClass()) {
+            // Object<type=String> and Object<type=ScriptFunction> will produce Object
+            // TODO: maybe find most specific common superclass?
+            return Type.OBJECT;
         }
         return type0.weight() > type1.weight() ? type0 : type1;
     }
diff --git a/src/jdk/nashorn/internal/ir/AccessNode.java b/src/jdk/nashorn/internal/ir/AccessNode.java
index 55b0aa3f..957adf69 100644
--- a/src/jdk/nashorn/internal/ir/AccessNode.java
+++ b/src/jdk/nashorn/internal/ir/AccessNode.java
@@ -25,7 +25,6 @@
 
 package jdk.nashorn.internal.ir;
 
-import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.annotations.Immutable;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 
@@ -46,12 +45,12 @@ public final class AccessNode extends BaseNode {
      * @param property  property
      */
     public AccessNode(final long token, final int finish, final Expression base, final IdentNode property) {
-        super(token, finish, base, false, false);
+        super(token, finish, base, false);
         this.property = property.setIsPropertyName();
     }
 
-    private AccessNode(final AccessNode accessNode, final Expression base, final IdentNode property, final boolean isFunction, final boolean hasCallSiteType) {
-        super(accessNode, base, isFunction, hasCallSiteType);
+    private AccessNode(final AccessNode accessNode, final Expression base, final IdentNode property, final boolean isFunction) {
+        super(accessNode, base, isFunction);
         this.property = property;
     }
 
@@ -73,13 +72,6 @@ public final class AccessNode extends BaseNode {
     public void toString(final StringBuilder sb) {
         final boolean needsParen = tokenType().needsParens(getBase().tokenType(), true);
 
-        if (hasCallSiteType()) {
-            sb.append('{');
-            final String desc = getType().getDescriptor();
-            sb.append(desc.charAt(desc.length() - 1) == ';' ? "O" : getType().getDescriptor());
-            sb.append('}');
-        }
-
         if (needsParen) {
             sb.append('(');
         }
@@ -107,21 +99,14 @@ public final class AccessNode extends BaseNode {
         if (this.base == base) {
             return this;
         }
-        return new AccessNode(this, base, property, isFunction(), hasCallSiteType());
+        return new AccessNode(this, base, property, isFunction());
     }
 
     private AccessNode setProperty(final IdentNode property) {
         if (this.property == property) {
             return this;
         }
-        return new AccessNode(this, base, property, isFunction(), hasCallSiteType());
-    }
-
-    @Override
-    public AccessNode setType(final TemporarySymbols ts, final LexicalContext lc, final Type type) {
-        logTypeChange(type);
-        final AccessNode newAccessNode = (AccessNode)setSymbol(lc, getSymbol().setTypeOverrideShared(type, ts));
-        return new AccessNode(newAccessNode, base, property.setType(ts, lc, type), isFunction(), hasCallSiteType());
+        return new AccessNode(this, base, property, isFunction());
     }
 
     @Override
@@ -129,7 +114,7 @@ public final class AccessNode extends BaseNode {
         if (isFunction()) {
             return this;
         }
-        return new AccessNode(this, base, property, true, hasCallSiteType());
+        return new AccessNode(this, base, property, true);
     }
 
 }
diff --git a/src/jdk/nashorn/internal/ir/BaseNode.java b/src/jdk/nashorn/internal/ir/BaseNode.java
index f945ef35..96f155d1 100644
--- a/src/jdk/nashorn/internal/ir/BaseNode.java
+++ b/src/jdk/nashorn/internal/ir/BaseNode.java
@@ -25,10 +25,6 @@
 
 package jdk.nashorn.internal.ir;
 
-import static jdk.nashorn.internal.codegen.ObjectClassGenerator.DEBUG_FIELDS;
-
-import jdk.nashorn.internal.codegen.ObjectClassGenerator;
-import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.annotations.Immutable;
 
 /**
@@ -38,15 +34,13 @@ import jdk.nashorn.internal.ir.annotations.Immutable;
  * @see IndexNode
  */
 @Immutable
-public abstract class BaseNode extends Expression implements FunctionCall, TypeOverride<BaseNode> {
+public abstract class BaseNode extends Expression implements FunctionCall {
 
     /** Base Node. */
     protected final Expression base;
 
     private final boolean isFunction;
 
-    private final boolean hasCallSiteType;
-
     /**
      * Constructor
      *
@@ -54,13 +48,11 @@ public abstract class BaseNode extends Expression implements FunctionCall, TypeO
      * @param finish finish
      * @param base   base node
      * @param isFunction is this a function
-     * @param hasCallSiteType does this access have a callsite type
      */
-    public BaseNode(final long token, final int finish, final Expression base, final boolean isFunction, final boolean hasCallSiteType) {
+    public BaseNode(final long token, final int finish, final Expression base, final boolean isFunction) {
         super(token, base.getStart(), finish);
         this.base            = base;
         this.isFunction      = isFunction;
-        this.hasCallSiteType = hasCallSiteType;
     }
 
     /**
@@ -68,13 +60,11 @@ public abstract class BaseNode extends Expression implements FunctionCall, TypeO
      * @param baseNode node to inherit from
      * @param base base
      * @param isFunction is this a function
-     * @param hasCallSiteType does this access have a callsite type
      */
-    protected BaseNode(final BaseNode baseNode, final Expression base, final boolean isFunction, final boolean hasCallSiteType) {
+    protected BaseNode(final BaseNode baseNode, final Expression base, final boolean isFunction) {
         super(baseNode);
         this.base            = base;
         this.isFunction      = isFunction;
-        this.hasCallSiteType = hasCallSiteType;
     }
 
     /**
@@ -96,26 +86,4 @@ public abstract class BaseNode extends Expression implements FunctionCall, TypeO
      */
     public abstract BaseNode setIsFunction();
 
-    @Override
-    public boolean canHaveCallSiteType() {
-        return true; //carried by the symbol and always the same nodetype==symboltype
-    }
-
-    /**
-     * Does the access have a call site type override?
-     * @return true if overridden
-     */
-    protected boolean hasCallSiteType() {
-        return hasCallSiteType;
-    }
-
-    /**
-     * Debug type change
-     * @param type new type
-     */
-    protected final void logTypeChange(final Type type) {
-        if (DEBUG_FIELDS && !Type.areEquivalent(getSymbol().getSymbolType(), type)) {
-            ObjectClassGenerator.LOG.info(getClass().getName(), " ", this, " => ", type, " instead of ", getType());
-        }
-    }
 }
diff --git a/src/jdk/nashorn/internal/ir/BinaryNode.java b/src/jdk/nashorn/internal/ir/BinaryNode.java
index 169772d7..0a1d1bfc 100644
--- a/src/jdk/nashorn/internal/ir/BinaryNode.java
+++ b/src/jdk/nashorn/internal/ir/BinaryNode.java
@@ -90,6 +90,9 @@ public final class BinaryNode extends Expression implements Assignment<Expressio
             return Type.LONG;
         case ASSIGN_SAR:
         case ASSIGN_SHL:
+        case BIT_AND:
+        case BIT_OR:
+        case BIT_XOR:
         case ASSIGN_BIT_AND:
         case ASSIGN_BIT_OR:
         case ASSIGN_BIT_XOR:
@@ -170,6 +173,42 @@ public final class BinaryNode extends Expression implements Assignment<Expressio
     }
 
     @Override
+    public boolean isLocal() {
+        switch (tokenType()) {
+        case SAR:
+        case SHL:
+        case SHR:
+        case BIT_AND:
+        case BIT_OR:
+        case BIT_XOR:
+        case ADD:
+        case DIV:
+        case MOD:
+        case MUL:
+        case SUB:
+            return lhs.isLocal() && lhs.getType().isJSPrimitive()
+                && rhs.isLocal() && rhs.getType().isJSPrimitive();
+        case ASSIGN_ADD:
+        case ASSIGN_BIT_AND:
+        case ASSIGN_BIT_OR:
+        case ASSIGN_BIT_XOR:
+        case ASSIGN_DIV:
+        case ASSIGN_MOD:
+        case ASSIGN_MUL:
+        case ASSIGN_SAR:
+        case ASSIGN_SHL:
+        case ASSIGN_SHR:
+        case ASSIGN_SUB:
+            return lhs instanceof IdentNode && lhs.isLocal() && lhs.getType().isJSPrimitive()
+                    && rhs.isLocal() && rhs.getType().isJSPrimitive();
+        case ASSIGN:
+            return lhs instanceof IdentNode && lhs.isLocal() && rhs.isLocal();
+        default:
+            return false;
+        }
+    }
+
+    @Override
     public void toString(final StringBuilder sb) {
         final TokenType type = tokenType();
 
diff --git a/src/jdk/nashorn/internal/ir/CallNode.java b/src/jdk/nashorn/internal/ir/CallNode.java
index ffaae078..0d38f241 100644
--- a/src/jdk/nashorn/internal/ir/CallNode.java
+++ b/src/jdk/nashorn/internal/ir/CallNode.java
@@ -36,9 +36,7 @@ import jdk.nashorn.internal.ir.visitor.NodeVisitor;
  * IR representation for a function call.
  */
 @Immutable
-public final class CallNode extends LexicalContextExpression implements TypeOverride<CallNode> {
-
-    private final Type type;
+public final class CallNode extends LexicalContextExpression {
 
     /** Function identifier or function body. */
     private final Expression function;
@@ -150,18 +148,16 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
         this.function   = function;
         this.args       = args;
         this.flags      = 0;
-        this.type       = null;
         this.evalArgs   = null;
         this.lineNumber = lineNumber;
     }
 
-    private CallNode(final CallNode callNode, final Expression function, final List<Expression> args, final int flags, final Type type, final EvalArgs evalArgs) {
+    private CallNode(final CallNode callNode, final Expression function, final List<Expression> args, final int flags, final EvalArgs evalArgs) {
         super(callNode);
         this.lineNumber = callNode.lineNumber;
         this.function = function;
         this.args = args;
         this.flags = flags;
-        this.type = type;
         this.evalArgs = evalArgs;
     }
 
@@ -175,29 +171,9 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
 
     @Override
     public Type getType() {
-        if (hasCallSiteType()) {
-            return type;
-        }
         return function instanceof FunctionNode ? ((FunctionNode)function).getReturnType() : Type.OBJECT;
     }
 
-    @Override
-    public CallNode setType(final TemporarySymbols ts, final LexicalContext lc, final Type type) {
-        if (this.type == type) {
-            return this;
-        }
-        return new CallNode(this, function, args, flags, type, evalArgs);
-    }
-
-    private boolean hasCallSiteType() {
-        return this.type != null;
-    }
-
-    @Override
-    public boolean canHaveCallSiteType() {
-        return true;
-    }
-
     /**
      * Assist in IR navigation.
      *
@@ -212,7 +188,6 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
                     setFunction((Expression)function.accept(visitor)).
                     setArgs(Node.accept(visitor, Expression.class, args)).
                     setFlags(flags).
-                    setType(null, lc, type).
                     setEvalArgs(evalArgs == null ?
                             null :
                             evalArgs.setCode((Expression)evalArgs.getCode().accept(visitor)).
@@ -229,13 +204,6 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
 
     @Override
     public void toString(final StringBuilder sb) {
-        if (hasCallSiteType()) {
-            sb.append('{');
-            final String desc = getType().getDescriptor();
-            sb.append(desc.charAt(desc.length() - 1) == ';' ? 'O' : getType().getDescriptor());
-            sb.append('}');
-        }
-
         function.toString(sb);
 
         sb.append('(');
@@ -271,7 +239,7 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
         if (this.args == args) {
             return this;
         }
-        return new CallNode(this, function, args, flags, type, evalArgs);
+        return new CallNode(this, function, args, flags, evalArgs);
     }
 
     /**
@@ -293,7 +261,7 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
         if (this.evalArgs == evalArgs) {
             return this;
         }
-        return new CallNode(this, function, args, flags, type, evalArgs);
+        return new CallNode(this, function, args, flags, evalArgs);
     }
 
     /**
@@ -321,7 +289,7 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
         if (this.function == function) {
             return this;
         }
-        return new CallNode(this, function, args, flags, type, evalArgs);
+        return new CallNode(this, function, args, flags, evalArgs);
     }
 
     /**
@@ -344,6 +312,6 @@ public final class CallNode extends LexicalContextExpression implements TypeOver
         if (this.flags == flags) {
             return this;
         }
-        return new CallNode(this, function, args, flags, type, evalArgs);
+        return new CallNode(this, function, args, flags, evalArgs);
     }
 }
diff --git a/src/jdk/nashorn/internal/ir/Expression.java b/src/jdk/nashorn/internal/ir/Expression.java
index 9006fa8d..f8074fe4 100644
--- a/src/jdk/nashorn/internal/ir/Expression.java
+++ b/src/jdk/nashorn/internal/ir/Expression.java
@@ -96,4 +96,16 @@ public abstract class Expression extends Node {
         assert hasType() : this + " has no type";
         return symbol.getSymbolType();
     }
+
+    /**
+     * Returns {@code true} if this expression depends exclusively on state that is constant
+     * or local to the currently running function and thus inaccessible to other functions.
+     * This implies that a local expression must not call any other functions (neither directly
+     * nor implicitly through a getter, setter, or object-to-primitive type conversion).
+     *
+     * @return true if this expression does not depend on state shared with other functions.
+     */
+    public boolean isLocal() {
+        return false;
+    }
 }
diff --git a/src/jdk/nashorn/internal/ir/IdentNode.java b/src/jdk/nashorn/internal/ir/IdentNode.java
index 4b139b25..30e8ed11 100644
--- a/src/jdk/nashorn/internal/ir/IdentNode.java
+++ b/src/jdk/nashorn/internal/ir/IdentNode.java
@@ -28,9 +28,7 @@ package jdk.nashorn.internal.ir;
 import static jdk.nashorn.internal.codegen.CompilerConstants.__DIR__;
 import static jdk.nashorn.internal.codegen.CompilerConstants.__FILE__;
 import static jdk.nashorn.internal.codegen.CompilerConstants.__LINE__;
-import static jdk.nashorn.internal.codegen.ObjectClassGenerator.DEBUG_FIELDS;
 
-import jdk.nashorn.internal.codegen.ObjectClassGenerator;
 import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.annotations.Immutable;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
@@ -39,10 +37,11 @@ import jdk.nashorn.internal.ir.visitor.NodeVisitor;
  * IR representation for an identifier.
  */
 @Immutable
-public final class IdentNode extends Expression implements PropertyKey, TypeOverride<IdentNode>, FunctionCall {
-    private static final int PROPERTY_NAME    = 1 << 0;
-    private static final int INITIALIZED_HERE = 1 << 1;
-    private static final int FUNCTION         = 1 << 2;
+public final class IdentNode extends Expression implements PropertyKey, FunctionCall {
+    private static final int PROPERTY_NAME     = 1 << 0;
+    private static final int INITIALIZED_HERE  = 1 << 1;
+    private static final int FUNCTION          = 1 << 2;
+    private static final int FUTURESTRICT_NAME = 1 << 3;
 
     /** Identifier. */
     private final String name;
@@ -100,19 +99,6 @@ public final class IdentNode extends Expression implements PropertyKey, TypeOver
         return callSiteType != null;
     }
 
-    @Override
-    public IdentNode setType(final TemporarySymbols ts, final LexicalContext lc, final Type type) {
-        // do NOT, repeat NOT touch the symbol here. it might be a local variable or whatever. This is the override if it isn't
-        if (this.callSiteType == type) {
-            return this;
-        }
-        if (DEBUG_FIELDS && getSymbol() != null && !Type.areEquivalent(getSymbol().getSymbolType(), type)) {
-            ObjectClassGenerator.LOG.info(getClass().getName(), " ", this, " => ", type, " instead of ", getType());
-        }
-
-        return new IdentNode(this, name, type, flags);
-    }
-
     /**
      * Assist in IR navigation.
      *
@@ -152,29 +138,9 @@ public final class IdentNode extends Expression implements PropertyKey, TypeOver
         return getName();
     }
 
-    /**
-     * We can only override type if the symbol lives in the scope, as otherwise
-     * it is strongly determined by the local variable already allocated.
-     *
-     * <p>We also return true if the symbol represents the return value of a function with a
-     * non-generic return type as in this case we need to propagate the type instead of
-     * converting to object, for example if the symbol is used as the left hand side of an
-     * assignment such as in the code below.</p>
-     *
-     * <pre>
-     *   try {
-     *     return 2;
-     *   } finally {
-     *     return 3;
-     *   }
-     * }
-     * </pre>
-     *
-     * @return true if can have callsite type
-     */
     @Override
-    public boolean canHaveCallSiteType() {
-        return getSymbol() != null && (getSymbol().isScope() || getSymbol().isNonGenericReturn());
+    public boolean isLocal() {
+        return !getSymbol().isScope();
     }
 
     /**
@@ -197,6 +163,25 @@ public final class IdentNode extends Expression implements PropertyKey, TypeOver
     }
 
     /**
+     * Check if this IdentNode is a future strict name
+     * @return true if this is a future strict name
+     */
+    public boolean isFutureStrictName() {
+        return (flags & FUTURESTRICT_NAME) != 0;
+    }
+
+    /**
+     * Flag this IdentNode as a future strict name
+     * @return a node equivalent to this one except for the requested change.
+     */
+    public IdentNode setIsFutureStrictName() {
+        if (isFutureStrictName()) {
+            return this;
+        }
+        return new IdentNode(this, name, callSiteType, flags | FUTURESTRICT_NAME);
+    }
+
+    /**
      * Helper function for local def analysis.
      * @return true if IdentNode is initialized on creation
      */
diff --git a/src/jdk/nashorn/internal/ir/IndexNode.java b/src/jdk/nashorn/internal/ir/IndexNode.java
index 2799e9be..83f58ffc 100644
--- a/src/jdk/nashorn/internal/ir/IndexNode.java
+++ b/src/jdk/nashorn/internal/ir/IndexNode.java
@@ -25,7 +25,6 @@
 
 package jdk.nashorn.internal.ir;
 
-import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.annotations.Immutable;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 
@@ -46,12 +45,12 @@ public final class IndexNode extends BaseNode {
      * @param index   index for access
      */
     public IndexNode(final long token, final int finish, final Expression base, final Expression index) {
-        super(token, finish, base, false, false);
+        super(token, finish, base, false);
         this.index = index;
     }
 
-    private IndexNode(final IndexNode indexNode, final Expression base, final Expression index, final boolean isFunction, final boolean hasCallSiteType) {
-        super(indexNode, base, isFunction, hasCallSiteType);
+    private IndexNode(final IndexNode indexNode, final Expression base, final Expression index, final boolean isFunction) {
+        super(indexNode, base, isFunction);
         this.index = index;
     }
 
@@ -69,13 +68,6 @@ public final class IndexNode extends BaseNode {
     public void toString(final StringBuilder sb) {
         final boolean needsParen = tokenType().needsParens(base.tokenType(), true);
 
-        if (hasCallSiteType()) {
-            sb.append('{');
-            final String desc = getType().getDescriptor();
-            sb.append(desc.charAt(desc.length() - 1) == ';' ? "O" : getType().getDescriptor());
-            sb.append('}');
-        }
-
         if (needsParen) {
             sb.append('(');
         }
@@ -103,7 +95,7 @@ public final class IndexNode extends BaseNode {
         if (this.base == base) {
             return this;
         }
-        return new IndexNode(this, base, index, isFunction(), hasCallSiteType());
+        return new IndexNode(this, base, index, isFunction());
     }
 
     /**
@@ -115,7 +107,7 @@ public final class IndexNode extends BaseNode {
         if(this.index == index) {
             return this;
         }
-        return new IndexNode(this, base, index, isFunction(), hasCallSiteType());
+        return new IndexNode(this, base, index, isFunction());
     }
 
     @Override
@@ -123,14 +115,7 @@ public final class IndexNode extends BaseNode {
         if (isFunction()) {
             return this;
         }
-        return new IndexNode(this, base, index, true, hasCallSiteType());
-    }
-
-    @Override
-    public IndexNode setType(final TemporarySymbols ts, final LexicalContext lc, final Type type) {
-        logTypeChange(type);
-        final IndexNode newIndexNode = (IndexNode)setSymbol(lc, getSymbol().setTypeOverrideShared(type, ts));
-        return new IndexNode(newIndexNode, base, index, isFunction(), true);
+        return new IndexNode(this, base, index, true);
     }
 
 }
diff --git a/src/jdk/nashorn/internal/ir/LexicalContext.java b/src/jdk/nashorn/internal/ir/LexicalContext.java
index 666be7e3..1b380d38 100644
--- a/src/jdk/nashorn/internal/ir/LexicalContext.java
+++ b/src/jdk/nashorn/internal/ir/LexicalContext.java
@@ -587,11 +587,11 @@ public class LexicalContext {
                 final FunctionNode fn = (FunctionNode)node;
                 final Source source = fn.getSource();
                 String src = source.toString();
-                if (src.indexOf(File.pathSeparator) != -1) {
+                if (src.contains(File.pathSeparator)) {
                     src = src.substring(src.lastIndexOf(File.pathSeparator));
                 }
                 src += ' ';
-                src += source.getLine(fn.getStart());
+                src += fn.getLineNumber();
                 sb.append(src);
             }
             sb.append(' ');
diff --git a/src/jdk/nashorn/internal/ir/LiteralNode.java b/src/jdk/nashorn/internal/ir/LiteralNode.java
index b2d9e9fa..8d6823cb 100644
--- a/src/jdk/nashorn/internal/ir/LiteralNode.java
+++ b/src/jdk/nashorn/internal/ir/LiteralNode.java
@@ -28,10 +28,13 @@ package jdk.nashorn.internal.ir;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+
 import jdk.nashorn.internal.codegen.CompileUnit;
+import jdk.nashorn.internal.codegen.types.ArrayType;
 import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.annotations.Immutable;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
+import jdk.nashorn.internal.objects.NativeArray;
 import jdk.nashorn.internal.parser.Lexer.LexerToken;
 import jdk.nashorn.internal.parser.Token;
 import jdk.nashorn.internal.parser.TokenType;
@@ -96,14 +99,6 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
         return value == null;
     }
 
-    /**
-     * Check if the literal value is boolean true
-     * @return true if literal value is boolean true
-     */
-    public boolean isTrue() {
-        return JSType.toBoolean(value);
-    }
-
     @Override
     public Type getType() {
         return Type.typeFor(value.getClass());
@@ -259,8 +254,36 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
         return new NullLiteralNode(parent.getToken(), parent.getFinish());
     }
 
+    /**
+     * Super class for primitive (side-effect free) literals.
+     *
+     * @param <T> the literal type
+     */
+    public static class PrimitiveLiteralNode<T> extends LiteralNode<T> {
+        private PrimitiveLiteralNode(final long token, final int finish, final T value) {
+            super(token, finish, value);
+        }
+
+        private PrimitiveLiteralNode(final PrimitiveLiteralNode<T> literalNode) {
+            super(literalNode);
+        }
+
+        /**
+         * Check if the literal value is boolean true
+         * @return true if literal value is boolean true
+         */
+        public boolean isTrue() {
+            return JSType.toBoolean(value);
+        }
+
+        @Override
+        public boolean isLocal() {
+            return true;
+        }
+    }
+
     @Immutable
-    private static final class BooleanLiteralNode extends LiteralNode<Boolean> {
+    private static final class BooleanLiteralNode extends PrimitiveLiteralNode<Boolean> {
 
         private BooleanLiteralNode(final long token, final int finish, final boolean value) {
             super(Token.recast(token, value ? TokenType.TRUE : TokenType.FALSE), finish, value);
@@ -312,7 +335,7 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
     }
 
     @Immutable
-    private static final class NumberLiteralNode extends LiteralNode<Number> {
+    private static final class NumberLiteralNode extends PrimitiveLiteralNode<Number> {
 
         private final Type type = numberGetType(value);
 
@@ -374,7 +397,7 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
         return new NumberLiteralNode(parent.getToken(), parent.getFinish(), value);
     }
 
-    private static class UndefinedLiteralNode extends LiteralNode<Undefined> {
+    private static class UndefinedLiteralNode extends PrimitiveLiteralNode<Undefined> {
         private UndefinedLiteralNode(final long token, final int finish) {
             super(Token.recast(token, TokenType.OBJECT), finish, ScriptRuntime.UNDEFINED);
         }
@@ -410,7 +433,7 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
     }
 
     @Immutable
-    private static class StringLiteralNode extends LiteralNode<String> {
+    private static class StringLiteralNode extends PrimitiveLiteralNode<String> {
         private StringLiteralNode(final long token, final int finish, final String value) {
             super(Token.recast(token, TokenType.STRING), finish, value);
         }
@@ -511,18 +534,12 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
             return object;
         } else if (object instanceof LiteralNode) {
             return objectAsConstant(((LiteralNode<?>)object).getValue());
-        } else if (object instanceof UnaryNode) {
-            final UnaryNode unaryNode = (UnaryNode)object;
-
-            if (unaryNode.isTokenType(TokenType.CONVERT) && unaryNode.getType().isObject()) {
-                return objectAsConstant(unaryNode.rhs());
-            }
         }
 
         return POSTSET_MARKER;
     }
 
-    private static final class NullLiteralNode extends LiteralNode<Object> {
+    private static final class NullLiteralNode extends PrimitiveLiteralNode<Object> {
 
         private NullLiteralNode(final long token, final int finish) {
             super(Token.recast(token, TokenType.OBJECT), finish, null);
@@ -767,8 +784,11 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
             return value;
         }
 
-        @Override
-        public Type getType() {
+        /**
+         * Get the array element type as Java format, e.g. [I
+         * @return array element type
+         */
+        public ArrayType getArrayType() {
             if (elementType.isInteger()) {
                 return Type.INT_ARRAY;
             } else if (elementType.isLong()) {
@@ -780,6 +800,11 @@ public abstract class LiteralNode<T> extends Expression implements PropertyKey {
             }
         }
 
+        @Override
+        public Type getType() {
+            return Type.typeFor(NativeArray.class);
+        }
+
         /**
          * Get the element type of this array literal
          * @return element type
diff --git a/src/jdk/nashorn/internal/ir/RuntimeNode.java b/src/jdk/nashorn/internal/ir/RuntimeNode.java
index d100b408..269cb905 100644
--- a/src/jdk/nashorn/internal/ir/RuntimeNode.java
+++ b/src/jdk/nashorn/internal/ir/RuntimeNode.java
@@ -38,7 +38,7 @@ import jdk.nashorn.internal.parser.TokenType;
  * IR representation for a runtime call.
  */
 @Immutable
-public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode> {
+public class RuntimeNode extends Expression {
 
     /**
      * Request enum used for meta-information about the runtime request
@@ -159,6 +159,36 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
         }
 
         /**
+         * Derive a runtime node request type for a node
+         * @param node the node
+         * @return request type
+         */
+        public static Request requestFor(final Node node) {
+            assert node.isComparison();
+            switch (node.tokenType()) {
+            case EQ_STRICT:
+                return Request.EQ_STRICT;
+            case NE_STRICT:
+                return Request.NE_STRICT;
+            case EQ:
+                return Request.EQ;
+            case NE:
+                return Request.NE;
+            case LT:
+                return Request.LT;
+            case LE:
+                return Request.LE;
+            case GT:
+                return Request.GT;
+            case GE:
+                return Request.GE;
+            default:
+                assert false;
+                return null;
+            }
+        }
+
+        /**
          * Is this an EQ or EQ_STRICT?
          *
          * @param request a request
@@ -268,9 +298,6 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
     /** Call arguments. */
     private final List<Expression> args;
 
-    /** Call site override - e.g. we know that a ScriptRuntime.ADD will return an int */
-    private final Type callSiteType;
-
     /** is final - i.e. may not be removed again, lower in the code pipeline */
     private final boolean isFinal;
 
@@ -287,16 +314,14 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
 
         this.request      = request;
         this.args         = args;
-        this.callSiteType = null;
         this.isFinal      = false;
     }
 
-    private RuntimeNode(final RuntimeNode runtimeNode, final Request request, final Type callSiteType, final boolean isFinal, final List<Expression> args) {
+    private RuntimeNode(final RuntimeNode runtimeNode, final Request request, final boolean isFinal, final List<Expression> args) {
         super(runtimeNode);
 
         this.request      = request;
         this.args         = args;
-        this.callSiteType = callSiteType;
         this.isFinal      = isFinal;
     }
 
@@ -335,7 +360,6 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
 
         this.request      = request;
         this.args         = args;
-        this.callSiteType = null;
         this.isFinal      = false;
     }
 
@@ -376,7 +400,7 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
         if (this.isFinal == isFinal) {
             return this;
         }
-        return new RuntimeNode(this, request, callSiteType, isFinal, args);
+        return new RuntimeNode(this, request, isFinal, args);
     }
 
     /**
@@ -384,24 +408,7 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
      */
     @Override
     public Type getType() {
-        return hasCallSiteType() ? callSiteType : request.getReturnType();
-    }
-
-    @Override
-    public RuntimeNode setType(final TemporarySymbols ts, final LexicalContext lc, final Type type) {
-        if (this.callSiteType == type) {
-            return this;
-        }
-        return new RuntimeNode(this, request, type, isFinal, args);
-    }
-
-    @Override
-    public boolean canHaveCallSiteType() {
-        return request == Request.ADD;
-    }
-
-    private boolean hasCallSiteType() {
-        return callSiteType != null;
+        return request.getReturnType();
     }
 
     @Override
@@ -450,7 +457,7 @@ public class RuntimeNode extends Expression implements TypeOverride<RuntimeNode>
         if (this.args == args) {
             return this;
         }
-        return new RuntimeNode(this, request, callSiteType, isFinal, args);
+        return new RuntimeNode(this, request, isFinal, args);
     }
 
     /**
diff --git a/src/jdk/nashorn/internal/ir/Symbol.java b/src/jdk/nashorn/internal/ir/Symbol.java
index 69e98ac6..2906893f 100644
--- a/src/jdk/nashorn/internal/ir/Symbol.java
+++ b/src/jdk/nashorn/internal/ir/Symbol.java
@@ -75,6 +75,8 @@ public final class Symbol implements Comparable<Symbol> {
     public static final int IS_SPECIALIZED_PARAM = 1 << 13;
     /** Is this symbol a shared temporary? */
     public static final int IS_SHARED            = 1 << 14;
+    /** Is this a function declaration? */
+    public static final int IS_FUNCTION_DECLARATION = 1 << 15;
 
     /** Null or name identifying symbol. */
     private final String name;
@@ -360,6 +362,14 @@ public final class Symbol implements Comparable<Symbol> {
     }
 
     /**
+     * Check if this symbol is a function declaration
+     * @return true if a function declaration
+     */
+    public boolean isFunctionDeclaration() {
+        return (flags & IS_FUNCTION_DECLARATION) == IS_FUNCTION_DECLARATION;
+    }
+
+    /**
      * Creates an unshared copy of a symbol. The symbol must be currently shared.
      * @param newName the name for the new symbol.
      * @return a new, unshared symbol.
@@ -396,6 +406,16 @@ public final class Symbol implements Comparable<Symbol> {
 
 
     /**
+     * Mark this symbol as a function declaration.
+     */
+    public void setIsFunctionDeclaration() {
+        if (!isFunctionDeclaration()) {
+            trace("SET IS FUNCTION DECLARATION");
+            flags |= IS_FUNCTION_DECLARATION;
+        }
+    }
+
+    /**
      * Check if this symbol is a variable
      * @return true if variable
      */
diff --git a/src/jdk/nashorn/internal/ir/TernaryNode.java b/src/jdk/nashorn/internal/ir/TernaryNode.java
index 70e1c726..26c14b76 100644
--- a/src/jdk/nashorn/internal/ir/TernaryNode.java
+++ b/src/jdk/nashorn/internal/ir/TernaryNode.java
@@ -109,6 +109,13 @@ public final class TernaryNode extends Expression {
         }
     }
 
+    @Override
+    public boolean isLocal() {
+        return getTest().isLocal()
+                && getTrueExpression().isLocal()
+                && getFalseExpression().isLocal();
+    }
+
     /**
      * Get the test expression for this ternary expression, i.e. "x" in x ? y : z
      * @return the test expression
diff --git a/src/jdk/nashorn/internal/ir/TypeOverride.java b/src/jdk/nashorn/internal/ir/TypeOverride.java
deleted file mode 100644
index 929d0128..00000000
--- a/src/jdk/nashorn/internal/ir/TypeOverride.java
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package jdk.nashorn.internal.ir;
-
-import jdk.nashorn.internal.codegen.types.Type;
-
-/**
- * A type override makes it possible to change the return type of a node, if we know
- * that the linker can provide it directly. For example, an identity node that is
- * in the scope, can very well look like an object to the compiler of the method it
- * is in, but if someone does (int)x, it make senses to ask for it directly
- * with an int getter instead of loading it as an object and explicitly converting it
- * by using JSType.toInt32. Especially in scenarios where the field is already stored
- * as a primitive, this will be much faster than the "object is all I see" scope
- * available in the method
- * @param <T> the type of the node implementing the interface
- */
-
-public interface TypeOverride<T extends Node> {
-    /**
-     * Set the override type
-     *
-     * @param ts temporary symbols
-     * @param lc the current lexical context
-     * @param type the type
-     * @return a node equivalent to this one except for the requested change.
-     */
-    public T setType(final TemporarySymbols ts, final LexicalContext lc, final Type type);
-
-    /**
-     * Returns true if this node can have a callsite override, e.g. all scope ident nodes
-     * which lead to dynamic getters can have it, local variable nodes (slots) can't.
-     * Call nodes can have it unconditionally and so on
-     *
-     * @return true if it is possible to assign a type override to this node
-     */
-    public boolean canHaveCallSiteType();
-
-}
diff --git a/src/jdk/nashorn/internal/ir/UnaryNode.java b/src/jdk/nashorn/internal/ir/UnaryNode.java
index 2de2ca5d..4923d31e 100644
--- a/src/jdk/nashorn/internal/ir/UnaryNode.java
+++ b/src/jdk/nashorn/internal/ir/UnaryNode.java
@@ -26,7 +26,6 @@
 package jdk.nashorn.internal.ir;
 
 import static jdk.nashorn.internal.parser.TokenType.BIT_NOT;
-import static jdk.nashorn.internal.parser.TokenType.CONVERT;
 import static jdk.nashorn.internal.parser.TokenType.DECPOSTFIX;
 import static jdk.nashorn.internal.parser.TokenType.INCPOSTFIX;
 
@@ -130,6 +129,26 @@ public final class UnaryNode extends Expression implements Assignment<Expression
     }
 
     @Override
+    public boolean isLocal() {
+        switch (tokenType()) {
+            case NEW:
+                return false;
+            case ADD:
+            case SUB:
+            case NOT:
+            case BIT_NOT:
+                return rhs.isLocal() && rhs.getType().isJSPrimitive();
+            case DECPOSTFIX:
+            case DECPREFIX:
+            case INCPOSTFIX:
+            case INCPREFIX:
+                return rhs instanceof IdentNode && rhs.isLocal() && rhs.getType().isJSPrimitive();
+            default:
+                return rhs.isLocal();
+        }
+    }
+
+    @Override
     public void toString(final StringBuilder sb) {
         toString(sb, new Runnable() {
             @Override
@@ -150,19 +169,10 @@ public final class UnaryNode extends Expression implements Assignment<Expression
         final TokenType type      = tokenType();
         final String    name      = type.getName();
         final boolean   isPostfix = type == DECPOSTFIX || type == INCPOSTFIX;
-        final boolean   isConvert = type == CONVERT && getSymbol() != null;
 
         boolean rhsParen   = type.needsParens(rhs().tokenType(), false);
-        int     convertPos = 0;
 
-        if (isConvert) {
-            convertPos = sb.length();
-            sb.append("(");
-            sb.append(getType());
-            sb.append(")(");
-        }
-
-        if (!isPostfix && !isConvert) {
+        if (!isPostfix) {
             if (name == null) {
                 sb.append(type.name());
                 rhsParen = true;
@@ -186,16 +196,6 @@ public final class UnaryNode extends Expression implements Assignment<Expression
         if (isPostfix) {
             sb.append(type == DECPOSTFIX ? "--" : "++");
         }
-
-        if (isConvert) {
-            // strip extra cast parenthesis which makes the printout harder to read
-            final boolean endsWithParenthesis = sb.charAt(sb.length() - 1) == ')';
-            if (!endsWithParenthesis) {
-                sb.append(')');
-            } else {
-                sb.setCharAt(convertPos, ' ');
-            }
-        }
     }
 
     /**
diff --git a/src/jdk/nashorn/internal/ir/debug/ObjectSizeCalculator.java b/src/jdk/nashorn/internal/ir/debug/ObjectSizeCalculator.java
index 2d4412e7..89269d5f 100644
--- a/src/jdk/nashorn/internal/ir/debug/ObjectSizeCalculator.java
+++ b/src/jdk/nashorn/internal/ir/debug/ObjectSizeCalculator.java
@@ -25,10 +25,10 @@
 
 package jdk.nashorn.internal.ir.debug;
 
-import java.lang.management.ManagementFactory;
-import java.lang.management.MemoryPoolMXBean;
 import java.lang.reflect.Array;
 import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
@@ -51,9 +51,9 @@ import java.util.Map;
  * switch, it can not detect
  * this fact and will report incorrect sizes, as it will presume the default JVM
  * behavior.
- *
- * @author Attila Szegedi
  */
+
+@SuppressWarnings("StaticNonFinalUsedInInitialization")
 public class ObjectSizeCalculator {
 
     /**
@@ -368,6 +368,29 @@ public class ObjectSizeCalculator {
                 type.getName());
     }
 
+    // ALERT: java.lang.management is not available in compact 1.  We need
+    // to use reflection to soft link test memory statistics.
+
+    static Class<?>  managementFactory    = null;
+    static Class<?>  memoryPoolMXBean     = null;
+    static Class<?>  memoryUsage          = null;
+    static Method    getMemoryPoolMXBeans = null;
+    static Method    getUsage             = null;
+    static Method    getMax               = null;
+    static {
+        try {
+            managementFactory    = Class.forName("java.lang.management.ManagementFactory");
+            memoryPoolMXBean     = Class.forName("java.lang.management.MemoryPoolMXBean");
+            memoryUsage          = Class.forName("java.lang.management.MemoryUsage");
+
+            getMemoryPoolMXBeans = managementFactory.getMethod("getMemoryPoolMXBeans");
+            getUsage             = memoryPoolMXBean.getMethod("getUsage");
+            getMax               = memoryUsage.getMethod("getMax");
+        } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) {
+            // Pass thru, asserts when attempting to use.
+        }
+    }
+
     /**
      * Return the current memory usage
      * @return current memory usage derived from system configuration
@@ -409,9 +432,33 @@ public class ObjectSizeCalculator {
                 strVmVersion.indexOf('.')));
         if (vmVersion >= 17) {
             long maxMemory = 0;
-            for (MemoryPoolMXBean mp : ManagementFactory.getMemoryPoolMXBeans()) {
-                maxMemory += mp.getUsage().getMax();
+
+            /*
+               See ALERT above.  The reflection code below duplicates the following
+               sequence, and avoids hard coding of java.lang.management.
+
+               for (MemoryPoolMXBean mp : ManagementFactory.getMemoryPoolMXBeans()) {
+                   maxMemory += mp.getUsage().getMax();
+               }
+            */
+
+            if (getMemoryPoolMXBeans == null) {
+                throw new AssertionError("java.lang.management not available in compact 1");
             }
+
+            try {
+                final List<?> memoryPoolMXBeans = (List<?>)getMemoryPoolMXBeans.invoke(managementFactory);
+                for (final Object mp : memoryPoolMXBeans) {
+                    final Object usage = getUsage.invoke(mp);
+                    final Object max = getMax.invoke(usage);
+                    maxMemory += ((Long)max).longValue();
+                }
+            } catch (IllegalAccessException |
+                     IllegalArgumentException |
+                     InvocationTargetException ex) {
+                throw new AssertionError("java.lang.management not available in compact 1");
+            }
+
             if (maxMemory < 30L * 1024 * 1024 * 1024) {
                 // HotSpot 17.0 and above use compressed OOPs below 30GB of RAM total
                 // for all memory pools (yes, including code cache).
diff --git a/src/jdk/nashorn/internal/ir/visitor/NodeOperatorVisitor.java b/src/jdk/nashorn/internal/ir/visitor/NodeOperatorVisitor.java
index 71600395..2b1de7c7 100644
--- a/src/jdk/nashorn/internal/ir/visitor/NodeOperatorVisitor.java
+++ b/src/jdk/nashorn/internal/ir/visitor/NodeOperatorVisitor.java
@@ -51,8 +51,6 @@ public class NodeOperatorVisitor<T extends LexicalContext> extends NodeVisitor<T
             return enterADD(unaryNode);
         case BIT_NOT:
             return enterBIT_NOT(unaryNode);
-        case CONVERT:
-            return enterCONVERT(unaryNode);
         case DELETE:
             return enterDELETE(unaryNode);
         case DISCARD:
@@ -84,8 +82,6 @@ public class NodeOperatorVisitor<T extends LexicalContext> extends NodeVisitor<T
             return leaveADD(unaryNode);
         case BIT_NOT:
             return leaveBIT_NOT(unaryNode);
-        case CONVERT:
-            return leaveCONVERT(unaryNode);
         case DELETE:
             return leaveDELETE(unaryNode);
         case DISCARD:
@@ -323,26 +319,6 @@ public class NodeOperatorVisitor<T extends LexicalContext> extends NodeVisitor<T
     }
 
     /**
-     * Unary enter - callback for entering a conversion
-     *
-     * @param  unaryNode the node
-     * @return true if traversal should continue and node children be traversed, false otherwise
-     */
-    public boolean enterCONVERT(final UnaryNode unaryNode) {
-        return enterDefault(unaryNode);
-    }
-
-    /**
-     * Unary leave - callback for leaving a conversion
-     *
-     * @param  unaryNode the node
-     * @return processed node, which will replace the original one, or the original node
-     */
-    public Node leaveCONVERT(final UnaryNode unaryNode) {
-        return leaveDefault(unaryNode);
-    }
-
-    /**
      * Unary enter - callback for entering a ++ or -- operator
      *
      * @param  unaryNode the node
diff --git a/src/jdk/nashorn/internal/objects/Global.java b/src/jdk/nashorn/internal/objects/Global.java
index 161909bb..0a09370a 100644
--- a/src/jdk/nashorn/internal/objects/Global.java
+++ b/src/jdk/nashorn/internal/objects/Global.java
@@ -53,19 +53,19 @@ import jdk.nashorn.internal.runtime.GlobalFunctions;
 import jdk.nashorn.internal.runtime.GlobalObject;
 import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.NativeJavaPackage;
-import jdk.nashorn.internal.runtime.PropertyMap;
-import jdk.nashorn.internal.runtime.ScriptEnvironment;
 import jdk.nashorn.internal.runtime.PropertyDescriptor;
-import jdk.nashorn.internal.runtime.arrays.ArrayData;
-import jdk.nashorn.internal.runtime.regexp.RegExpResult;
+import jdk.nashorn.internal.runtime.PropertyMap;
 import jdk.nashorn.internal.runtime.Scope;
+import jdk.nashorn.internal.runtime.ScriptEnvironment;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.ScriptingFunctions;
 import jdk.nashorn.internal.runtime.Source;
+import jdk.nashorn.internal.runtime.arrays.ArrayData;
 import jdk.nashorn.internal.runtime.linker.Bootstrap;
 import jdk.nashorn.internal.runtime.linker.InvokeByName;
+import jdk.nashorn.internal.runtime.regexp.RegExpResult;
 import jdk.nashorn.internal.scripts.JO;
 
 /**
@@ -491,8 +491,8 @@ public final class Global extends ScriptObject implements GlobalObject, Scope {
     // GlobalObject interface implementation
 
     @Override
-    public boolean isOfContext(final Context context) {
-        return this.context == context;
+    public boolean isOfContext(final Context ctxt) {
+        return this.context == ctxt;
     }
 
     @Override
@@ -1665,9 +1665,9 @@ public final class Global extends ScriptObject implements GlobalObject, Scope {
         final ScriptObject stringPrototype = getStringPrototype();
         stringPrototype.addOwnProperty("length", Attribute.NON_ENUMERABLE_CONSTANT, 0.0);
 
-        // add Array.prototype.length
+        // set isArray flag on Array.prototype
         final ScriptObject arrayPrototype = getArrayPrototype();
-        arrayPrototype.addOwnProperty("length", Attribute.NOT_ENUMERABLE|Attribute.NOT_CONFIGURABLE, 0.0);
+        arrayPrototype.setIsArray();
 
         this.DEFAULT_DATE = new NativeDate(Double.NaN, this);
 
diff --git a/src/jdk/nashorn/internal/objects/NativeArray.java b/src/jdk/nashorn/internal/objects/NativeArray.java
index 8cb1ded9..67b9f1f1 100644
--- a/src/jdk/nashorn/internal/objects/NativeArray.java
+++ b/src/jdk/nashorn/internal/objects/NativeArray.java
@@ -372,9 +372,7 @@ public final class NativeArray extends ScriptObject {
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
     public static Object isArray(final Object self, final Object arg) {
-        return isArray(arg) || (arg == Global.instance().getArrayPrototype())
-                || (arg instanceof NativeRegExpExecResult)
-                || (arg instanceof JSObject && ((JSObject)arg).isArray());
+        return isArray(arg) || (arg instanceof JSObject && ((JSObject)arg).isArray());
     }
 
     /**
@@ -403,6 +401,26 @@ public final class NativeArray extends ScriptObject {
         }
     }
 
+    /**
+     * Prototype length getter
+     * @param self self reference
+     * @return the length of the object
+     */
+    @Getter(name = "length", where = Where.PROTOTYPE, attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_CONFIGURABLE)
+    public static Object getProtoLength(final Object self) {
+        return length(self);  // Same as instance getter but we can't make nasgen use the same method for prototype
+    }
+
+    /**
+     * Prototype length setter
+     * @param self   self reference
+     * @param length new length property
+     */
+    @Setter(name = "length", where = Where.PROTOTYPE, attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_CONFIGURABLE)
+    public static void setProtoLength(final Object self, final Object length) {
+        length(self, length);  // Same as instance setter but we can't make nasgen use the same method for prototype
+    }
+
     static long validLength(final Object length, final boolean reject) {
         final double doubleLength = JSType.toNumber(length);
         if (!Double.isNaN(doubleLength) && JSType.isRepresentableAsLong(doubleLength)) {
@@ -819,8 +837,15 @@ public final class NativeArray extends ScriptObject {
             if (bulkable(sobj)) {
                 sobj.getArray().shiftLeft(1);
             } else {
+                boolean hasPrevious = true;
                 for (long k = 1; k < len; k++) {
-                    sobj.set(k - 1, sobj.get(k), true);
+                    boolean hasCurrent = sobj.has(k);
+                    if (hasCurrent) {
+                        sobj.set(k - 1, sobj.get(k), true);
+                    } else if (hasPrevious) {
+                        sobj.delete(k - 1, true);
+                    }
+                    hasPrevious = hasCurrent;
                 }
             }
             sobj.delete(--len, true);
@@ -844,6 +869,10 @@ public final class NativeArray extends ScriptObject {
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object slice(final Object self, final Object start, final Object end) {
         final Object       obj                 = Global.toObject(self);
+        if (!(obj instanceof ScriptObject)) {
+            return ScriptRuntime.UNDEFINED;
+        }
+
         final ScriptObject sobj                = (ScriptObject)obj;
         final long         len                 = JSType.toUint32(sobj.getLength());
         final long         relativeStart       = JSType.toLong(start);
@@ -860,9 +889,12 @@ public final class NativeArray extends ScriptObject {
             return new NativeArray(sobj.getArray().slice(k, finale));
         }
 
-        final NativeArray copy = new NativeArray(0);
+        // Construct array with proper length to have a deleted filter on undefined elements
+        final NativeArray copy = new NativeArray(finale - k);
         for (long n = 0; k < finale; n++, k++) {
-            copy.defineOwnProperty(ArrayIndex.getArrayIndex(n), sobj.get(k));
+            if (sobj.has(k)) {
+                copy.defineOwnProperty(ArrayIndex.getArrayIndex(n), sobj.get(k));
+            }
         }
 
         return copy;
@@ -993,19 +1025,42 @@ public final class NativeArray extends ScriptObject {
         final long actualStart = relativeStart < 0 ? Math.max(len + relativeStart, 0) : Math.min(relativeStart, len);
         final long actualDeleteCount = Math.min(Math.max(JSType.toLong(deleteCount), 0), len - actualStart);
 
-        final NativeArray array = new NativeArray(actualDeleteCount);
+        NativeArray returnValue;
+
+        if (actualStart <= Integer.MAX_VALUE && actualDeleteCount <= Integer.MAX_VALUE && bulkable(sobj)) {
+            try {
+                returnValue =  new NativeArray(sobj.getArray().fastSplice((int)actualStart, (int)actualDeleteCount, items.length));
+
+                // Since this is a dense bulkable array we can use faster defineOwnProperty to copy new elements
+                int k = (int) actualStart;
+                for (int i = 0; i < items.length; i++, k++) {
+                    sobj.defineOwnProperty(k, items[i]);
+                }
+            } catch (UnsupportedOperationException uoe) {
+                returnValue = slowSplice(sobj, actualStart, actualDeleteCount, items, len);
+            }
+        } else {
+            returnValue = slowSplice(sobj, actualStart, actualDeleteCount, items, len);
+        }
+
+        return returnValue;
+    }
+
+    private static NativeArray slowSplice(final ScriptObject sobj, final long start, final long deleteCount, final Object[] items, final long len) {
+
+        final NativeArray array = new NativeArray(deleteCount);
 
-        for (long k = 0; k < actualDeleteCount; k++) {
-            final long from = actualStart + k;
+        for (long k = 0; k < deleteCount; k++) {
+            final long from = start + k;
 
             if (sobj.has(from)) {
                 array.defineOwnProperty(ArrayIndex.getArrayIndex(k), sobj.get(from));
             }
         }
 
-        if (items.length < actualDeleteCount) {
-            for (long k = actualStart; k < (len - actualDeleteCount); k++) {
-                final long from = k + actualDeleteCount;
+        if (items.length < deleteCount) {
+            for (long k = start; k < (len - deleteCount); k++) {
+                final long from = k + deleteCount;
                 final long to   = k + items.length;
 
                 if (sobj.has(from)) {
@@ -1015,12 +1070,12 @@ public final class NativeArray extends ScriptObject {
                 }
             }
 
-            for (long k = len; k > (len - actualDeleteCount + items.length); k--) {
+            for (long k = len; k > (len - deleteCount + items.length); k--) {
                 sobj.delete(k - 1, true);
             }
-        } else if (items.length > actualDeleteCount) {
-            for (long k = len - actualDeleteCount; k > actualStart; k--) {
-                final long from = k + actualDeleteCount - 1;
+        } else if (items.length > deleteCount) {
+            for (long k = len - deleteCount; k > start; k--) {
+                final long from = k + deleteCount - 1;
                 final long to   = k + items.length - 1;
 
                 if (sobj.has(from)) {
@@ -1032,12 +1087,12 @@ public final class NativeArray extends ScriptObject {
             }
         }
 
-        long k = actualStart;
+        long k = start;
         for (int i = 0; i < items.length; i++, k++) {
             sobj.set(k, items[i], true);
         }
 
-        final long newLength = len - actualDeleteCount + items.length;
+        final long newLength = len - deleteCount + items.length;
         sobj.set("length", newLength, true);
 
         return array;
@@ -1108,12 +1163,16 @@ public final class NativeArray extends ScriptObject {
         try {
             final ScriptObject sobj = (ScriptObject)Global.toObject(self);
             final long         len  = JSType.toUint32(sobj.getLength());
-            final long         n    = JSType.toLong(fromIndex);
+            if (len == 0) {
+                return -1;
+            }
 
-            if (len == 0 || n >= len) {
+            final long         n = JSType.toLong(fromIndex);
+            if (n >= len) {
                 return -1;
             }
 
+
             for (long k = Math.max(0, (n < 0) ? (len - Math.abs(n)) : n); k < len; k++) {
                 if (sobj.has(k)) {
                     if (ScriptRuntime.EQ_STRICT(sobj.get(k), searchElement)) {
diff --git a/src/jdk/nashorn/internal/objects/NativeError.java b/src/jdk/nashorn/internal/objects/NativeError.java
index dc6aef90..d3e2effe 100644
--- a/src/jdk/nashorn/internal/objects/NativeError.java
+++ b/src/jdk/nashorn/internal/objects/NativeError.java
@@ -30,6 +30,7 @@ import static jdk.nashorn.internal.lookup.Lookup.MH;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
+
 import jdk.nashorn.api.scripting.NashornException;
 import jdk.nashorn.internal.objects.annotations.Attribute;
 import jdk.nashorn.internal.objects.annotations.Constructor;
@@ -37,10 +38,12 @@ import jdk.nashorn.internal.objects.annotations.Function;
 import jdk.nashorn.internal.objects.annotations.Property;
 import jdk.nashorn.internal.objects.annotations.ScriptClass;
 import jdk.nashorn.internal.objects.annotations.Where;
+import jdk.nashorn.internal.objects.ScriptFunctionImpl;
 import jdk.nashorn.internal.runtime.ECMAException;
 import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.PropertyMap;
 import jdk.nashorn.internal.runtime.ScriptObject;
+import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 
 /**
@@ -133,12 +136,16 @@ public final class NativeError extends ScriptObject {
      * @param errorObj the error object
      * @return undefined
      */
+    @SuppressWarnings("unused")
     @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
     public static Object captureStackTrace(final Object self, final Object errorObj) {
         Global.checkObject(errorObj);
         final ScriptObject sobj = (ScriptObject)errorObj;
-        final ECMAException exp = new ECMAException(sobj, null);
-        sobj.set("stack", getScriptStackString(sobj, exp), false);
+        new ECMAException(sobj, null); //constructor has side effects
+        sobj.delete("stack", false);
+        final ScriptFunction getStack = ScriptFunctionImpl.makeFunction("getStack", GET_STACK);
+        final ScriptFunction setStack = ScriptFunctionImpl.makeFunction("setStack", SET_STACK);
+        sobj.addOwnProperty("stack", Attribute.NOT_ENUMERABLE, getStack, setStack);
         return UNDEFINED;
     }
 
diff --git a/src/jdk/nashorn/internal/objects/NativeFunction.java b/src/jdk/nashorn/internal/objects/NativeFunction.java
index c77002e3..d092cfb6 100644
--- a/src/jdk/nashorn/internal/objects/NativeFunction.java
+++ b/src/jdk/nashorn/internal/objects/NativeFunction.java
@@ -221,6 +221,7 @@ public final class NativeFunction {
         final StringBuilder sb = new StringBuilder();
 
         sb.append("(function (");
+        final String funcBody;
         if (args.length > 0) {
             final StringBuilder paramListBuf = new StringBuilder();
             for (int i = 0; i < args.length - 1; i++) {
@@ -230,15 +231,20 @@ public final class NativeFunction {
                 }
             }
 
+            // now convert function body to a string
+            funcBody = JSType.toString(args[args.length - 1]);
+
             final String paramList = paramListBuf.toString();
             if (! paramList.isEmpty()) {
                 checkFunctionParameters(paramList);
                 sb.append(paramList);
             }
+        } else {
+            funcBody = null;
         }
+
         sb.append(") {\n");
         if (args.length > 0) {
-            final String funcBody = JSType.toString(args[args.length - 1]);
             checkFunctionBody(funcBody);
             sb.append(funcBody);
             sb.append('\n');
diff --git a/src/jdk/nashorn/internal/objects/NativeJSAdapter.java b/src/jdk/nashorn/internal/objects/NativeJSAdapter.java
index 5b89e2ca..668ca8cd 100644
--- a/src/jdk/nashorn/internal/objects/NativeJSAdapter.java
+++ b/src/jdk/nashorn/internal/objects/NativeJSAdapter.java
@@ -629,7 +629,8 @@ public final class NativeJSAdapter extends ScriptObject {
                     // to name. Probably not a big deal, but if we can ever make it leaner, it'd be nice.
                     return new GuardedInvocation(MH.dropArguments(MH.constant(Object.class,
                             func.makeBoundFunction(this, new Object[] { name })), 0, Object.class),
-                            adaptee.getMap().getProtoGetSwitchPoint(adaptee.getProto(), __call__), testJSAdaptor(adaptee, null, null, null));
+                            adaptee.getMap().getProtoGetSwitchPoint(adaptee.getProto(), __call__),
+                            testJSAdaptor(adaptee, null, null, null));
                 }
             }
             throw typeError("no.such.function", desc.getNameToken(2), ScriptRuntime.safeToString(this));
diff --git a/src/jdk/nashorn/internal/objects/NativeObject.java b/src/jdk/nashorn/internal/objects/NativeObject.java
index 94e3bef2..c7db39a5 100644
--- a/src/jdk/nashorn/internal/objects/NativeObject.java
+++ b/src/jdk/nashorn/internal/objects/NativeObject.java
@@ -60,6 +60,7 @@ import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.linker.Bootstrap;
 import jdk.nashorn.internal.runtime.linker.InvokeByName;
+import jdk.nashorn.internal.runtime.linker.NashornBeansLinker;
 
 /**
  * ECMA 15.2 Object objects
@@ -729,8 +730,7 @@ public final class NativeObject {
             final MethodType methodType, final Object source) {
         final GuardedInvocation inv;
         try {
-            inv = linker.getGuardedInvocation(createLinkRequest(operation, methodType, source),
-                Bootstrap.getLinkerServices());
+            inv = NashornBeansLinker.getGuardedInvocation(linker, createLinkRequest(operation, methodType, source), Bootstrap.getLinkerServices());
             assert passesGuard(source, inv.getGuard());
         } catch(RuntimeException|Error e) {
             throw e;
diff --git a/src/jdk/nashorn/internal/objects/NativeString.java b/src/jdk/nashorn/internal/objects/NativeString.java
index 1694b3da..9fd59191 100644
--- a/src/jdk/nashorn/internal/objects/NativeString.java
+++ b/src/jdk/nashorn/internal/objects/NativeString.java
@@ -505,7 +505,7 @@ public final class NativeString extends ScriptObject {
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object charAt(final Object self, final Object pos) {
-        return charAt(self, JSType.toInteger(pos));
+        return charAtImpl(checkObjectToString(self), JSType.toInteger(pos));
     }
 
     /**
@@ -527,7 +527,10 @@ public final class NativeString extends ScriptObject {
      */
     @SpecializedFunction
     public static String charAt(final Object self, final int pos) {
-        final String str = checkObjectToString(self);
+        return charAtImpl(checkObjectToString(self), pos);
+    }
+
+    private static String charAtImpl(final String str, final int pos) {
         return (pos < 0 || pos >= str.length()) ? "" : String.valueOf(str.charAt(pos));
     }
 
@@ -539,7 +542,7 @@ public final class NativeString extends ScriptObject {
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object charCodeAt(final Object self, final Object pos) {
-        return charCodeAt(self, JSType.toInteger(pos));
+        return charCodeAtImpl(checkObjectToString(self), JSType.toInteger(pos));
     }
 
     /**
@@ -561,7 +564,10 @@ public final class NativeString extends ScriptObject {
      */
     @SpecializedFunction
     public static double charCodeAt(final Object self, final int pos) {
-        final String str = checkObjectToString(self);
+        return charCodeAtImpl(checkObjectToString(self), pos);
+    }
+
+    private static double charCodeAtImpl(final String str, final int pos) {
         return (pos < 0 || pos >= str.length()) ? Double.NaN :  str.charAt(pos);
     }
 
diff --git a/src/jdk/nashorn/internal/objects/ScriptFunctionImpl.java b/src/jdk/nashorn/internal/objects/ScriptFunctionImpl.java
index 88421a70..638d18a2 100644
--- a/src/jdk/nashorn/internal/objects/ScriptFunctionImpl.java
+++ b/src/jdk/nashorn/internal/objects/ScriptFunctionImpl.java
@@ -25,6 +25,7 @@
 
 package jdk.nashorn.internal.objects;
 
+import static jdk.nashorn.internal.lookup.Lookup.MH;
 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
 
 import java.lang.invoke.MethodHandle;
@@ -255,6 +256,12 @@ public class ScriptFunctionImpl extends ScriptFunction {
         return makeFunction(name, methodHandle, null);
     }
 
+    @Override
+    public ScriptFunction makeSynchronizedFunction(final Object sync) {
+        final MethodHandle mh = MH.insertArguments(ScriptFunction.INVOKE_SYNC, 0, this, sync);
+        return makeFunction(getName(), mh);
+    }
+
     /**
      * Same as {@link ScriptFunction#makeBoundFunction(Object, Object[])}. The only reason we override it is so that we
      * can expose it to methods in this package.
diff --git a/src/jdk/nashorn/internal/parser/AbstractParser.java b/src/jdk/nashorn/internal/parser/AbstractParser.java
index 80f7ce07..587ae869 100644
--- a/src/jdk/nashorn/internal/parser/AbstractParser.java
+++ b/src/jdk/nashorn/internal/parser/AbstractParser.java
@@ -378,7 +378,7 @@ public abstract class AbstractParser {
             next();
 
             // Create IDENT node.
-            return new IdentNode(identToken, finish, ident);
+            return new IdentNode(identToken, finish, ident).setIsFutureStrictName();
         }
 
         // Get IDENT.
diff --git a/src/jdk/nashorn/internal/parser/Lexer.java b/src/jdk/nashorn/internal/parser/Lexer.java
index 09269c6c..a01705dd 100644
--- a/src/jdk/nashorn/internal/parser/Lexer.java
+++ b/src/jdk/nashorn/internal/parser/Lexer.java
@@ -47,7 +47,6 @@ import static jdk.nashorn.internal.parser.TokenType.XML;
 import jdk.nashorn.internal.runtime.ECMAErrors;
 import jdk.nashorn.internal.runtime.ErrorManager;
 import jdk.nashorn.internal.runtime.JSErrorType;
-import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.ParserException;
 import jdk.nashorn.internal.runtime.Source;
 import jdk.nashorn.internal.runtime.options.Options;
@@ -1054,16 +1053,6 @@ public class Lexer extends Scanner {
     }
 
     /**
-     * Convert string to number.
-     *
-     * @param valueString String to convert.
-     * @return Converted number.
-     */
-    private static Number valueOf(final String valueString) throws NumberFormatException {
-        return JSType.narrowestIntegerRepresentation(Double.valueOf(valueString));
-    }
-
-    /**
      * Scan a number.
      */
     protected void scanNumber() {
@@ -1623,7 +1612,7 @@ public class Lexer extends Scanner {
         case HEXADECIMAL:
             return Lexer.valueOf(source.getString(start + 2, len - 2), 16); // number
         case FLOATING:
-            return Lexer.valueOf(source.getString(start, len)); // number
+            return Double.valueOf(source.getString(start, len)); // number
         case STRING:
             return source.getString(start, len); // String
         case ESCSTRING:
diff --git a/src/jdk/nashorn/internal/parser/Parser.java b/src/jdk/nashorn/internal/parser/Parser.java
index 9663401f..869746cf 100644
--- a/src/jdk/nashorn/internal/parser/Parser.java
+++ b/src/jdk/nashorn/internal/parser/Parser.java
@@ -909,6 +909,10 @@ loop:
             default:
                 break;
             }
+
+            if (ident.isFutureStrictName()) {
+                throw error(AbstractParser.message("strict.name", ident.getName(), contextString), ident.getToken());
+            }
         }
     }
 
@@ -2103,13 +2107,13 @@ loop:
             final String ident = (String)expectValue(IDENT);
 
             if (type != COLON) {
-                final long getSetToken = token;
+                final long getSetToken = propertyToken;
 
                 switch (ident) {
                 case "get":
                     final PropertyKey getIdent = propertyName();
                     final String getterName = getIdent.getPropertyName();
-                    final IdentNode getNameNode = new IdentNode(((Node)getIdent).getToken(), finish, "get " + NameCodec.encode(getterName));
+                    final IdentNode getNameNode = new IdentNode(((Node)getIdent).getToken(), finish, NameCodec.encode("get " + getterName));
                     expect(LPAREN);
                     expect(RPAREN);
                     functionNode = functionBody(getSetToken, getNameNode, new ArrayList<IdentNode>(), FunctionNode.Kind.GETTER);
@@ -2118,7 +2122,7 @@ loop:
                 case "set":
                     final PropertyKey setIdent = propertyName();
                     final String setterName = setIdent.getPropertyName();
-                    final IdentNode setNameNode = new IdentNode(((Node)setIdent).getToken(), finish, "set " + NameCodec.encode(setterName));
+                    final IdentNode setNameNode = new IdentNode(((Node)setIdent).getToken(), finish, NameCodec.encode("set " + setterName));
                     expect(LPAREN);
                     final IdentNode argIdent = getIdent();
                     verifyStrictIdent(argIdent, "setter argument");
@@ -2436,7 +2440,7 @@ loop:
         // name is null, generate anonymous name
         boolean isAnonymous = false;
         if (name == null) {
-            final String tmpName = "_L" + source.getLine(Token.descPosition(token));
+            final String tmpName = "_L" + functionLine;
             name = new IdentNode(functionToken, Token.descPosition(functionToken), tmpName);
             isAnonymous = true;
         }
diff --git a/src/jdk/nashorn/internal/parser/TokenType.java b/src/jdk/nashorn/internal/parser/TokenType.java
index a976215b..6287a234 100644
--- a/src/jdk/nashorn/internal/parser/TokenType.java
+++ b/src/jdk/nashorn/internal/parser/TokenType.java
@@ -178,7 +178,6 @@ public enum TokenType {
     ARRAY          (LITERAL,  null),
 
     COMMALEFT      (IR,       null),
-    CONVERT        (IR,       null),
     DISCARD        (IR,       null),
     DECPOSTFIX     (IR,       null),
     INCPOSTFIX     (IR,       null);
diff --git a/src/jdk/nashorn/internal/runtime/CodeInstaller.java b/src/jdk/nashorn/internal/runtime/CodeInstaller.java
index be9976e7..28c9630e 100644
--- a/src/jdk/nashorn/internal/runtime/CodeInstaller.java
+++ b/src/jdk/nashorn/internal/runtime/CodeInstaller.java
@@ -68,4 +68,10 @@ public interface CodeInstaller<T> {
      * @return unique script id
      */
     public long getUniqueScriptId();
+
+    /**
+     * Get next unique eval id
+     * @return unique eval id
+     */
+    public long getUniqueEvalId();
 }
diff --git a/src/jdk/nashorn/internal/runtime/CompiledFunction.java b/src/jdk/nashorn/internal/runtime/CompiledFunction.java
index afa3657c..18b20a3d 100644
--- a/src/jdk/nashorn/internal/runtime/CompiledFunction.java
+++ b/src/jdk/nashorn/internal/runtime/CompiledFunction.java
@@ -48,6 +48,7 @@ final class CompiledFunction implements Comparable<CompiledFunction> {
     }
 
     CompiledFunction(final MethodType type, final MethodHandle invoker, final MethodHandle constructor) {
+        assert type != null;
         this.type        = type;
         this.invoker     = invoker;
         this.constructor = constructor;
@@ -80,7 +81,37 @@ final class CompiledFunction implements Comparable<CompiledFunction> {
 
     @Override
     public int compareTo(final CompiledFunction o) {
-        return weight() - o.weight();
+        return compareMethodTypes(type(), o.type());
+    }
+
+    private static int compareMethodTypes(final MethodType ownType, final MethodType otherType) {
+        // Comparable interface demands that compareTo() should only return 0 if objects are equal.
+        // Failing to meet this requirement causes same weight functions to replace each other in TreeSet,
+        // so we go some lengths to come up with an ordering between same weight functions,
+        // first falling back to parameter count and then to hash code.
+        if (ownType.equals(otherType)) {
+            return 0;
+        }
+
+        final int diff = weight(ownType) - weight(otherType);
+        if (diff != 0) {
+            return diff;
+        }
+        if (ownType.parameterCount() != otherType.parameterCount()) {
+            return ownType.parameterCount() - otherType.parameterCount();
+        }
+        // We're just interested in not returning 0 here, not correct ordering
+        return ownType.hashCode() - otherType.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return obj instanceof CompiledFunction && type().equals(((CompiledFunction)obj).type());
+    }
+
+    @Override
+    public int hashCode() {
+        return type().hashCode();
     }
 
     private int weight() {
@@ -119,14 +150,14 @@ final class CompiledFunction implements Comparable<CompiledFunction> {
      * a semantically equivalent linkage can be performed.
      *
      * @param mt type to check against
-     * @return
+     * @return true if types are compatible
      */
     boolean typeCompatible(final MethodType mt) {
-        final Class<?>[] wantedParams   = mt.parameterArray();
-        final Class<?>[] existingParams = type().parameterArray();
+        final int wantedParamCount   = mt.parameterCount();
+        final int existingParamCount = type.parameterCount();
 
         //if we are not examining a varargs type, the number of parameters must be the same
-        if (wantedParams.length != existingParams.length && !isVarArgsType(mt)) {
+        if (wantedParamCount != existingParamCount && !isVarArgsType(mt)) {
             return false;
         }
 
@@ -134,10 +165,10 @@ final class CompiledFunction implements Comparable<CompiledFunction> {
         //parameters lengths do not match is if our type ends with a varargs argument.
         //then every trailing parameter in the given callsite can be folded into it, making
         //us compatible (albeit slower than a direct specialization)
-        final int lastParamIndex = Math.min(wantedParams.length, existingParams.length);
+        final int lastParamIndex = Math.min(wantedParamCount, existingParamCount);
         for (int i = 0; i < lastParamIndex; i++) {
-            final Type w = Type.typeFor(wantedParams[i]);
-            final Type e = Type.typeFor(existingParams[i]);
+            final Type w = Type.typeFor(mt.parameterType(i));
+            final Type e = Type.typeFor(type.parameterType(i));
 
             //don't specialize on booleans, we have the "true" vs int 1 ambiguity in resolution
             //we also currently don't support boolean as a javascript function callsite type.
diff --git a/src/jdk/nashorn/internal/runtime/CompiledFunctions.java b/src/jdk/nashorn/internal/runtime/CompiledFunctions.java
index 1ddc42b5..ba5ae66c 100644
--- a/src/jdk/nashorn/internal/runtime/CompiledFunctions.java
+++ b/src/jdk/nashorn/internal/runtime/CompiledFunctions.java
@@ -24,6 +24,7 @@
  */
 package jdk.nashorn.internal.runtime;
 
+import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodType;
 import java.util.Iterator;
 import java.util.TreeSet;
@@ -35,6 +36,8 @@ import java.util.TreeSet;
 @SuppressWarnings("serial")
 final class CompiledFunctions extends TreeSet<CompiledFunction> {
 
+    private CompiledFunction generic;
+
     CompiledFunction best(final MethodType type) {
         final Iterator<CompiledFunction> iter = iterator();
         while (iter.hasNext()) {
@@ -43,13 +46,10 @@ final class CompiledFunctions extends TreeSet<CompiledFunction> {
                 return next;
             }
         }
-        return mostGeneric();
+        return generic();
     }
 
     boolean needsCallee() {
-        for (final CompiledFunction inv : this) {
-            assert ScriptFunctionData.needsCallee(inv.getInvoker()) == ScriptFunctionData.needsCallee(mostGeneric().getInvoker());
-        }
         return ScriptFunctionData.needsCallee(mostGeneric().getInvoker());
     }
 
@@ -57,6 +57,48 @@ final class CompiledFunctions extends TreeSet<CompiledFunction> {
         return last();
     }
 
+    CompiledFunction generic() {
+        CompiledFunction gen = this.generic;
+        if (gen == null) {
+            gen = this.generic = makeGeneric(mostGeneric());
+        }
+        return gen;
+    }
+
+    private static CompiledFunction makeGeneric(final CompiledFunction func) {
+        final MethodHandle invoker = composeGenericMethod(func.getInvoker());
+        final MethodHandle constructor = func.hasConstructor() ? composeGenericMethod(func.getConstructor()) : null;
+        return new CompiledFunction(invoker.type(), invoker, constructor);
+    }
+
+    /**
+     * Takes a method handle, and returns a potentially different method handle that can be used in
+     * {@code ScriptFunction#invoke(Object, Object...)} or {code ScriptFunction#construct(Object, Object...)}.
+     * The returned method handle will be sure to return {@code Object}, and will have all its parameters turned into
+     * {@code Object} as well, except for the following ones:
+     * <ul>
+     *   <li>a last parameter of type {@code Object[]} which is used for vararg functions,</li>
+     *   <li>the first argument, which is forced to be {@link ScriptFunction}, in case the function receives itself
+     *   (callee) as an argument.</li>
+     * </ul>
+     *
+     * @param mh the original method handle
+     *
+     * @return the new handle, conforming to the rules above.
+     */
+    private static MethodHandle composeGenericMethod(final MethodHandle mh) {
+        final MethodType type = mh.type();
+        final boolean isVarArg = ScriptFunctionData.isVarArg(mh);
+        final int paramCount = isVarArg ? type.parameterCount() - 1 : type.parameterCount();
+
+        MethodType newType = MethodType.genericMethodType(paramCount, isVarArg);
+
+        if (ScriptFunctionData.needsCallee(mh)) {
+            newType = newType.changeParameterType(0, ScriptFunction.class);
+        }
+        return type.equals(newType) ? mh : mh.asType(newType);
+    }
+
     /**
      * Is the given type even more specific than this entire list? That means
      * we have an opportunity for more specific versions of the method
diff --git a/src/jdk/nashorn/internal/runtime/ConsString.java b/src/jdk/nashorn/internal/runtime/ConsString.java
index 9cf51552..8f764f4b 100644
--- a/src/jdk/nashorn/internal/runtime/ConsString.java
+++ b/src/jdk/nashorn/internal/runtime/ConsString.java
@@ -57,10 +57,7 @@ public final class ConsString implements CharSequence {
 
     @Override
     public String toString() {
-        if (!flat) {
-            flatten();
-        }
-        return (String) left;
+        return (String) flattened();
     }
 
     @Override
@@ -70,18 +67,19 @@ public final class ConsString implements CharSequence {
 
     @Override
     public char charAt(final int index) {
-        if (!flat) {
-            flatten();
-        }
-        return left.charAt(index);
+        return flattened().charAt(index);
     }
 
     @Override
     public CharSequence subSequence(final int start, final int end) {
+        return flattened().subSequence(start, end);
+    }
+
+    private CharSequence flattened() {
         if (!flat) {
             flatten();
         }
-        return left.subSequence(start, end);
+        return left;
     }
 
     private void flatten() {
diff --git a/src/jdk/nashorn/internal/runtime/Context.java b/src/jdk/nashorn/internal/runtime/Context.java
index 7c69eb52..c9deee35 100644
--- a/src/jdk/nashorn/internal/runtime/Context.java
+++ b/src/jdk/nashorn/internal/runtime/Context.java
@@ -91,6 +91,11 @@ public final class Context {
      */
     public static final String NASHORN_JAVA_REFLECTION = "nashorn.JavaReflection";
 
+    // nashorn load psuedo URL prefixes
+    private static final String LOAD_CLASSPATH = "classpath:";
+    private static final String LOAD_FX = "fx:";
+    private static final String LOAD_NASHORN = "nashorn:";
+
     /* Force DebuggerSupport to be loaded. */
     static {
         DebuggerSupport.FORCELOAD = true;
@@ -134,6 +139,11 @@ public final class Context {
         public long getUniqueScriptId() {
             return context.getUniqueScriptId();
         }
+
+        @Override
+        public long getUniqueEvalId() {
+            return context.getUniqueEvalId();
+        }
     }
 
     /** Is Context global debug mode enabled ? */
@@ -233,10 +243,14 @@ public final class Context {
     /** Unique id for script. Used only when --loader-per-compile=false */
     private final AtomicLong uniqueScriptId;
 
+    /** Unique id for 'eval' */
+    private final AtomicLong uniqueEvalId;
+
     private static final ClassLoader myLoader = Context.class.getClassLoader();
     private static final StructureLoader sharedLoader;
 
-    /*package-private*/ ClassLoader getSharedLoader() {
+    /*package-private*/ @SuppressWarnings("static-method")
+    ClassLoader getSharedLoader() {
         return sharedLoader;
     }
 
@@ -315,6 +329,7 @@ public final class Context {
             this.uniqueScriptId = new AtomicLong();
         }
         this.errors    = errors;
+        this.uniqueEvalId = new AtomicLong();
 
         // if user passed -classpath option, make a class loader with that and set it as
         // thread context class loader so that script can access classes from that path.
@@ -501,21 +516,26 @@ public final class Context {
         // or a ScriptObject that has "name" and "source" (string valued) properties.
         if (src instanceof String) {
             final String srcStr = (String)src;
-            final File file = new File(srcStr);
-            if (srcStr.indexOf(':') != -1) {
-                if ((source = loadInternal(srcStr, "nashorn:", "resources/")) == null &&
-                    (source = loadInternal(srcStr, "fx:", "resources/fx/")) == null) {
-                    URL url;
-                    try {
-                        //check for malformed url. if malformed, it may still be a valid file
-                        url = new URL(srcStr);
-                    } catch (final MalformedURLException e) {
-                        url = file.toURI().toURL();
+            if (srcStr.startsWith(LOAD_CLASSPATH)) {
+                URL url = getResourceURL(srcStr.substring(LOAD_CLASSPATH.length()));
+                source = (url != null)? new Source(url.toString(), url) : null;
+            } else {
+                final File file = new File(srcStr);
+                if (srcStr.indexOf(':') != -1) {
+                    if ((source = loadInternal(srcStr, LOAD_NASHORN, "resources/")) == null &&
+                        (source = loadInternal(srcStr, LOAD_FX, "resources/fx/")) == null) {
+                        URL url;
+                        try {
+                            //check for malformed url. if malformed, it may still be a valid file
+                            url = new URL(srcStr);
+                        } catch (final MalformedURLException e) {
+                            url = file.toURI().toURL();
+                        }
+                        source = new Source(url.toString(), url);
                     }
-                    source = new Source(url.toString(), url);
+                } else if (file.isFile()) {
+                    source = new Source(srcStr, file);
                 }
-            } else if (file.isFile()) {
-                source = new Source(srcStr, file);
             }
         } else if (src instanceof File && ((File)src).isFile()) {
             final File file = (File)src;
@@ -610,36 +630,53 @@ public final class Context {
     }
 
     /**
+     * Checks that the given Class can be accessed from no permissions context.
+     *
+     * @param clazz Class object
+     * @throw SecurityException if not accessible
+     */
+    public static void checkPackageAccess(final Class<?> clazz) {
+        final SecurityManager sm = System.getSecurityManager();
+        if (sm != null) {
+            Class<?> bottomClazz = clazz;
+            while (bottomClazz.isArray()) {
+                bottomClazz = bottomClazz.getComponentType();
+            }
+            checkPackageAccess(sm, bottomClazz.getName());
+        }
+    }
+
+    /**
      * Checks that the given package can be accessed from no permissions context.
      *
+     * @param sm current security manager instance
      * @param fullName fully qualified package name
      * @throw SecurityException if not accessible
      */
-    public static void checkPackageAccess(final String fullName) {
+    private static void checkPackageAccess(final SecurityManager sm, final String fullName) {
+        sm.getClass(); // null check
         final int index = fullName.lastIndexOf('.');
         if (index != -1) {
-            final SecurityManager sm = System.getSecurityManager();
-            if (sm != null) {
-                AccessController.doPrivileged(new PrivilegedAction<Void>() {
-                    @Override
-                    public Void run() {
-                        sm.checkPackageAccess(fullName.substring(0, index));
-                        return null;
-                    }
-                }, NO_PERMISSIONS_ACC_CTXT);
-            }
+            final String pkgName = fullName.substring(0, index);
+            AccessController.doPrivileged(new PrivilegedAction<Void>() {
+                @Override
+                public Void run() {
+                    sm.checkPackageAccess(pkgName);
+                    return null;
+                }
+            }, NO_PERMISSIONS_ACC_CTXT);
         }
     }
 
     /**
-     * Checks that the given package can be accessed from no permissions context.
+     * Checks that the given Class can be accessed from no permissions context.
      *
-     * @param fullName fully qualified package name
+     * @param clazz Class object
      * @return true if package is accessible, false otherwise
      */
-    public static boolean isAccessiblePackage(final String fullName) {
+    private static boolean isAccessiblePackage(final Class<?> clazz) {
         try {
-            checkPackageAccess(fullName);
+            checkPackageAccess(clazz);
             return true;
         } catch (final SecurityException se) {
             return false;
@@ -653,7 +690,7 @@ public final class Context {
      * @return true if Class is accessible, false otherwise
      */
     public static boolean isAccessibleClass(final Class<?> clazz) {
-        return Modifier.isPublic(clazz.getModifiers()) && Context.isAccessiblePackage(clazz.getName());
+        return Modifier.isPublic(clazz.getModifiers()) && Context.isAccessiblePackage(clazz);
     }
 
     /**
@@ -667,8 +704,16 @@ public final class Context {
      * @throws ClassNotFoundException if class cannot be resolved
      */
     public Class<?> findClass(final String fullName) throws ClassNotFoundException {
+        if (fullName.indexOf('[') != -1 || fullName.indexOf('/') != -1) {
+            // don't allow array class names or internal names.
+            throw new ClassNotFoundException(fullName);
+        }
+
         // check package access as soon as possible!
-        checkPackageAccess(fullName);
+        final SecurityManager sm = System.getSecurityManager();
+        if (sm != null) {
+            checkPackageAccess(sm, fullName);
+        }
 
         // try the script -classpath loader, if that is set
         if (classPathLoader != null) {
@@ -803,6 +848,18 @@ public final class Context {
         return Context.getContextTrusted();
     }
 
+    private URL getResourceURL(final String resName) {
+        // try the classPathLoader if we have and then
+        // try the appLoader if non-null.
+        if (classPathLoader != null) {
+            return classPathLoader.getResource(resName);
+        } else if (appLoader != null) {
+            return appLoader.getResource(resName);
+        }
+
+        return null;
+    }
+
     private Object evaluateSource(final Source source, final ScriptObject scope, final ScriptObject thiz) {
         ScriptFunction script = null;
 
@@ -907,6 +964,10 @@ public final class Context {
              }, CREATE_LOADER_ACC_CTXT);
     }
 
+    private long getUniqueEvalId() {
+        return uniqueEvalId.getAndIncrement();
+    }
+
     private long getUniqueScriptId() {
         return uniqueScriptId.getAndIncrement();
     }
diff --git a/src/jdk/nashorn/internal/runtime/DebugLogger.java b/src/jdk/nashorn/internal/runtime/DebugLogger.java
index fa0dbede..e832c861 100644
--- a/src/jdk/nashorn/internal/runtime/DebugLogger.java
+++ b/src/jdk/nashorn/internal/runtime/DebugLogger.java
@@ -65,7 +65,17 @@ public final class DebugLogger {
         } else {
             this.logger = Logging.getLogger(loggerName);
         }
-        this.isEnabled = logger.getLevel() != Level.OFF;
+        assert logger != null;
+        this.isEnabled = getLevel() != Level.OFF;
+    }
+
+    /**
+     * Do not currently support chaining this with parent logger. Logger level null
+     * means disabled
+     * @return level
+     */
+    private Level getLevel() {
+        return logger.getLevel() == null ? Level.OFF : logger.getLevel();
     }
 
     /**
@@ -126,7 +136,7 @@ public final class DebugLogger {
      * @return true if level is above the given one
      */
     public boolean levelAbove(final Level level) {
-        return logger.getLevel().intValue() > level.intValue();
+        return getLevel().intValue() > level.intValue();
     }
 
     /**
diff --git a/src/jdk/nashorn/internal/runtime/FinalScriptFunctionData.java b/src/jdk/nashorn/internal/runtime/FinalScriptFunctionData.java
index f28ed6ae..c7a410ea 100644
--- a/src/jdk/nashorn/internal/runtime/FinalScriptFunctionData.java
+++ b/src/jdk/nashorn/internal/runtime/FinalScriptFunctionData.java
@@ -40,7 +40,7 @@ final class FinalScriptFunctionData extends ScriptFunctionData {
      *
      * @param name          name
      * @param arity         arity
-     * @param list          precompiled code
+     * @param functions     precompiled code
      * @param isStrict      strict
      * @param isBuiltin     builtin
      * @param isConstructor constructor
@@ -73,12 +73,13 @@ final class FinalScriptFunctionData extends ScriptFunctionData {
     }
 
     private void addInvoker(final MethodHandle mh) {
-        boolean needsCallee = needsCallee(mh);
         if (isConstructor(mh)) {
-            //only nasgen constructors: (boolean, self, args) are subject to binding a boolean newObj. isConstructor
-            //is too conservative a check. However, isConstructor(mh) always implies isConstructor param
+            // only nasgen constructors: (boolean, self, args) are subject to binding a boolean newObj. isConstructor
+            // is too conservative a check. However, isConstructor(mh) always implies isConstructor param
             assert isConstructor();
-            code.add(new CompiledFunction(mh.type(), MH.insertArguments(mh, 0, false), composeConstructor(MH.insertArguments(mh, 0, true), needsCallee))); //make sure callee state can be determined when we reach constructor
+            final MethodHandle invoker = MH.insertArguments(mh, 0, false);
+            final MethodHandle constructor = composeConstructor(MH.insertArguments(mh, 0, true));
+            code.add(new CompiledFunction(mh.type(), invoker, constructor));
         } else {
             code.add(new CompiledFunction(mh.type(), mh));
         }
diff --git a/src/jdk/nashorn/internal/runtime/GlobalObject.java b/src/jdk/nashorn/internal/runtime/GlobalObject.java
index 7e01fd6e..3779f3bd 100644
--- a/src/jdk/nashorn/internal/runtime/GlobalObject.java
+++ b/src/jdk/nashorn/internal/runtime/GlobalObject.java
@@ -38,9 +38,10 @@ import jdk.nashorn.internal.runtime.linker.InvokeByName;
 public interface GlobalObject {
     /**
      * Is this global of the given Context?
+     * @param ctxt the context
      * @return true if this global belongs to the given Context
      */
-    public boolean isOfContext(Context context);
+    public boolean isOfContext(final Context ctxt);
 
     /**
      * Does this global belong to a strict Context?
diff --git a/src/jdk/nashorn/internal/runtime/JSType.java b/src/jdk/nashorn/internal/runtime/JSType.java
index 93f0835b..54130196 100644
--- a/src/jdk/nashorn/internal/runtime/JSType.java
+++ b/src/jdk/nashorn/internal/runtime/JSType.java
@@ -31,6 +31,8 @@ import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
 import java.lang.reflect.Array;
+import java.util.Deque;
+import java.util.List;
 import jdk.internal.dynalink.beans.StaticClass;
 import jdk.nashorn.api.scripting.JSObject;
 import jdk.nashorn.internal.codegen.CompilerConstants.Call;
@@ -86,6 +88,9 @@ public enum JSType {
     /** JavaScript compliant conversion function from Object to number */
     public static final Call TO_NUMBER = staticCall(myLookup, JSType.class, "toNumber", double.class, Object.class);
 
+    /** JavaScript compliant conversion function from Object to String */
+    public static final Call TO_STRING = staticCall(myLookup, JSType.class, "toString", String.class, Object.class);
+
     /** JavaScript compliant conversion function from Object to int32 */
     public static final Call TO_INT32 = staticCall(myLookup, JSType.class, "toInt32", int.class, Object.class);
 
@@ -104,14 +109,20 @@ public enum JSType {
     /** JavaScript compliant conversion function from number to int64 */
     public static final Call TO_INT64_D = staticCall(myLookup, JSType.class, "toInt64", long.class, double.class);
 
-    /** JavaScript compliant conversion function from Object to String */
-    public static final Call TO_STRING = staticCall(myLookup, JSType.class, "toString", String.class, Object.class);
-
     /** JavaScript compliant conversion function from number to String */
     public static final Call TO_STRING_D = staticCall(myLookup, JSType.class, "toString", String.class, double.class);
 
-    /** JavaScript compliant conversion function from Object to primitive */
-    public static final Call TO_PRIMITIVE = staticCall(myLookup, JSType.class, "toPrimitive", Object.class,  Object.class);
+    /** Combined call to toPrimitive followed by toString. */
+    public static final Call TO_PRIMITIVE_TO_STRING = staticCall(myLookup, JSType.class, "toPrimitiveToString", String.class,  Object.class);
+
+    /** Method handle to convert a JS Object to a Java array. */
+    public static final Call TO_JAVA_ARRAY = staticCall(myLookup, JSType.class, "toJavaArray", Object.class, Object.class, Class.class);
+
+    /** Method handle to convert a JS Object to a Java List. */
+    public static final Call TO_JAVA_LIST = staticCall(myLookup, JSType.class, "toJavaList", List.class, Object.class);
+
+    /** Method handle to convert a JS Object to a Java deque. */
+   public static final Call TO_JAVA_DEQUE = staticCall(myLookup, JSType.class, "toJavaDeque", Deque.class, Object.class);
 
     private static final double INT32_LIMIT = 4294967296.0;
 
@@ -202,26 +213,6 @@ public enum JSType {
     }
 
     /**
-     * Get the smallest integer representation of a number. Returns an Integer
-     * for something that is int representable, and Long for something that
-     * is long representable. If the number needs to be a double, this is an
-     * identity function
-     *
-     * @param number number to check
-     *
-     * @return Number instanceof the narrowest possible integer representation for number
-     */
-    public static Number narrowestIntegerRepresentation(final double number) {
-        if (isRepresentableAsInt(number)) {
-            return (int)number;
-        } else if (isRepresentableAsLong(number)) {
-            return (long)number;
-        } else {
-            return number;
-        }
-    }
-
-    /**
      * Check whether an object is primitive
      *
      * @param obj an object
@@ -258,12 +249,11 @@ public enum JSType {
      * @return the primitive form of the object
      */
     public static Object toPrimitive(final Object obj, final Class<?> hint) {
-        if (!(obj instanceof ScriptObject)) {
-            return obj;
-        }
+        return obj instanceof ScriptObject ? toPrimitive((ScriptObject)obj, hint) : obj;
+    }
 
-        final ScriptObject sobj   = (ScriptObject)obj;
-        final Object       result = sobj.getDefaultValue(hint);
+    private static Object toPrimitive(final ScriptObject sobj, final Class<?> hint) {
+        final Object result = sobj.getDefaultValue(hint);
 
         if (!isPrimitive(result)) {
             throw typeError("bad.default.value", result.toString());
@@ -273,6 +263,17 @@ public enum JSType {
     }
 
     /**
+     * Combines a hintless toPrimitive and a toString call.
+     *
+     * @param obj  an object
+     *
+     * @return the string form of the primitive form of the object
+     */
+    public static String toPrimitiveToString(Object obj) {
+        return toString(toPrimitive(obj));
+    }
+
+    /**
      * JavaScript compliant conversion of number to boolean
      *
      * @param num a number
@@ -476,6 +477,19 @@ public enum JSType {
         return toNumberGeneric(obj);
     }
 
+
+    /**
+     * JavaScript compliant conversion of Object to number
+     * See ECMA 9.3 ToNumber
+     *
+     * @param obj  an object
+     *
+     * @return a number
+     */
+    public static double toNumber(final ScriptObject obj) {
+        return toNumber(toPrimitive(obj, Number.class));
+    }
+
     /**
      * Digit representation for a character
      *
@@ -872,9 +886,9 @@ public enum JSType {
      */
     public static Object toJavaArray(final Object obj, final Class<?> componentType) {
         if (obj instanceof ScriptObject) {
-            return convertArray(((ScriptObject)obj).getArray().asObjectArray(), componentType);
+            return ((ScriptObject)obj).getArray().asArrayOfType(componentType);
         } else if (obj instanceof JSObject) {
-            final ArrayLikeIterator itr = ArrayLikeIterator.arrayLikeIterator(obj);
+            final ArrayLikeIterator<?> itr = ArrayLikeIterator.arrayLikeIterator(obj);
             final int len = (int) itr.getLength();
             final Object[] res = new Object[len];
             int idx = 0;
@@ -882,6 +896,8 @@ public enum JSType {
                 res[idx++] = itr.next();
             }
             return convertArray(res, componentType);
+        } else if(obj == null) {
+            return null;
         } else {
             throw new IllegalArgumentException("not a script object");
         }
@@ -895,6 +911,15 @@ public enum JSType {
      * @return converted Java array
      */
     public static Object convertArray(final Object[] src, final Class<?> componentType) {
+        if(componentType == Object.class) {
+            for(int i = 0; i < src.length; ++i) {
+                final Object e = src[i];
+                if(e instanceof ConsString) {
+                    src[i] = e.toString();
+                }
+            }
+        }
+
         final int l = src.length;
         final Object dst = Array.newInstance(componentType, l);
         final MethodHandle converter = Bootstrap.getLinkerServices().getTypeConverter(Object.class, componentType);
@@ -911,6 +936,24 @@ public enum JSType {
     }
 
     /**
+     * Converts a JavaScript object to a Java List. See {@link ListAdapter} for details.
+     * @param obj the object to convert. Can be any array-like object.
+     * @return a List that is live-backed by the JavaScript object.
+     */
+    public static List<?> toJavaList(final Object obj) {
+        return ListAdapter.create(obj);
+    }
+
+    /**
+     * Converts a JavaScript object to a Java Deque. See {@link ListAdapter} for details.
+     * @param obj the object to convert. Can be any array-like object.
+     * @return a Deque that is live-backed by the JavaScript object.
+     */
+    public static Deque<?> toJavaDeque(final Object obj) {
+        return ListAdapter.create(obj);
+    }
+
+    /**
      * Check if an object is null or undefined
      *
      * @param obj object to check
@@ -1009,7 +1052,11 @@ public enum JSType {
         }
 
         if (obj instanceof ScriptObject) {
-            return toNumber(toPrimitive(obj, Number.class));
+            return toNumber((ScriptObject)obj);
+        }
+
+        if (obj instanceof JSObject) {
+            return ((JSObject)obj).toNumber();
         }
 
         return Double.NaN;
diff --git a/src/jdk/nashorn/internal/runtime/ListAdapter.java b/src/jdk/nashorn/internal/runtime/ListAdapter.java
index 41d34600..26c22c39 100644
--- a/src/jdk/nashorn/internal/runtime/ListAdapter.java
+++ b/src/jdk/nashorn/internal/runtime/ListAdapter.java
@@ -33,6 +33,7 @@ import java.util.NoSuchElementException;
 import java.util.RandomAccess;
 import java.util.concurrent.Callable;
 import jdk.nashorn.api.scripting.JSObject;
+import jdk.nashorn.api.scripting.ScriptObjectMirror;
 import jdk.nashorn.internal.runtime.linker.Bootstrap;
 import jdk.nashorn.internal.runtime.linker.InvokeByName;
 
@@ -119,10 +120,11 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
                 });
     }
 
+    /** wrapped object */
     protected final Object obj;
 
     // allow subclasses only in this package
-    ListAdapter(Object obj) {
+    ListAdapter(final Object obj) {
         this.obj = obj;
     }
 
@@ -134,7 +136,8 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
      */
     public static ListAdapter create(final Object obj) {
         if (obj instanceof ScriptObject) {
-            return new ScriptObjectListAdapter((ScriptObject)obj);
+            final Object mirror = ScriptObjectMirror.wrap(obj, Context.getGlobal());
+            return new JSObjectListAdapter((JSObject)mirror);
         } else if (obj instanceof JSObject) {
             return new JSObjectListAdapter((JSObject)obj);
         } else {
@@ -143,22 +146,32 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    public final Object get(int index) {
+    public final Object get(final int index) {
         checkRange(index);
         return getAt(index);
     }
 
+    /**
+     * Get object at an index
+     * @param index index in list
+     * @return object
+     */
     protected abstract Object getAt(final int index);
 
     @Override
-    public Object set(int index, Object element) {
+    public Object set(final int index, final Object element) {
         checkRange(index);
         final Object prevValue = getAt(index);
         setAt(index, element);
         return prevValue;
     }
 
-    protected abstract void setAt(int index, Object element);
+    /**
+     * Set object at an index
+     * @param index   index in list
+     * @param element element
+     */
+    protected abstract void setAt(final int index, final Object element);
 
     private void checkRange(int index) {
         if(index < 0 || index >= size()) {
@@ -167,18 +180,18 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    public final void push(Object e) {
+    public final void push(final Object e) {
         addFirst(e);
     }
 
     @Override
-    public final boolean add(Object e) {
+    public final boolean add(final Object e) {
         addLast(e);
         return true;
     }
 
     @Override
-    public final void addFirst(Object e) {
+    public final void addFirst(final Object e) {
         try {
             final InvokeByName unshiftInvoker = getUNSHIFT();
             final Object fn = unshiftInvoker.getGetter().invokeExact(obj);
@@ -192,7 +205,7 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    public final void addLast(Object e) {
+    public final void addLast(final Object e) {
         try {
             final InvokeByName pushInvoker = getPUSH();
             final Object fn = pushInvoker.getGetter().invokeExact(obj);
@@ -206,7 +219,7 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    public final void add(int index, Object e) {
+    public final void add(final int index, final Object e) {
         try {
             if(index < 0) {
                 throw invalidIndex(index);
@@ -225,35 +238,35 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
                     throw invalidIndex(index);
                 }
             }
-        } catch(RuntimeException | Error ex) {
+        } catch(final RuntimeException | Error ex) {
             throw ex;
-        } catch(Throwable t) {
+        } catch(final Throwable t) {
             throw new RuntimeException(t);
         }
     }
-    private static void checkFunction(Object fn, InvokeByName invoke) {
+    private static void checkFunction(final Object fn, final InvokeByName invoke) {
         if(!(Bootstrap.isCallable(fn))) {
             throw new UnsupportedOperationException("The script object doesn't have a function named " + invoke.getName());
         }
     }
 
-    private static IndexOutOfBoundsException invalidIndex(int index) {
+    private static IndexOutOfBoundsException invalidIndex(final int index) {
         return new IndexOutOfBoundsException(String.valueOf(index));
     }
 
     @Override
-    public final boolean offer(Object e) {
+    public final boolean offer(final Object e) {
         return offerLast(e);
     }
 
     @Override
-    public final boolean offerFirst(Object e) {
+    public final boolean offerFirst(final Object e) {
         addFirst(e);
         return true;
     }
 
     @Override
-    public final boolean offerLast(Object e) {
+    public final boolean offerLast(final Object e) {
         addLast(e);
         return true;
     }
@@ -287,7 +300,7 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    public final Object remove(int index) {
+    public final Object remove(final int index) {
         if(index < 0) {
             throw invalidIndex(index);
         } else if (index == 0) {
@@ -333,11 +346,11 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    protected final void removeRange(int fromIndex, int toIndex) {
+    protected final void removeRange(final int fromIndex, final int toIndex) {
         invokeSpliceRemove(fromIndex, toIndex - fromIndex);
     }
 
-    private void invokeSpliceRemove(int fromIndex, int count) {
+    private void invokeSpliceRemove(final int fromIndex, final int count) {
         try {
             final InvokeByName spliceRemoveInvoker = getSPLICE_REMOVE();
             final Object fn = spliceRemoveInvoker.getGetter().invokeExact(obj);
@@ -419,16 +432,16 @@ public abstract class ListAdapter extends AbstractList<Object> implements Random
     }
 
     @Override
-    public final boolean removeFirstOccurrence(Object o) {
+    public final boolean removeFirstOccurrence(final Object o) {
         return removeOccurrence(o, iterator());
     }
 
     @Override
-    public final boolean removeLastOccurrence(Object o) {
+    public final boolean removeLastOccurrence(final Object o) {
         return removeOccurrence(o, descendingIterator());
     }
 
-    private static boolean removeOccurrence(Object o, Iterator<Object> it) {
+    private static boolean removeOccurrence(final Object o, final Iterator<Object> it) {
         while(it.hasNext()) {
             final Object e = it.next();
             if(o == null ? e == null : o.equals(e)) {
diff --git a/src/jdk/nashorn/internal/runtime/Property.java b/src/jdk/nashorn/internal/runtime/Property.java
index e735ed11..d1dbe2ad 100644
--- a/src/jdk/nashorn/internal/runtime/Property.java
+++ b/src/jdk/nashorn/internal/runtime/Property.java
@@ -56,33 +56,36 @@ public abstract class Property {
     public static final int WRITABLE_ENUMERABLE_CONFIGURABLE = 0b0000_0000_0000;
 
     /** ECMA 8.6.1 - Is this property not writable? */
-    public static final int NOT_WRITABLE     = 0b0000_0000_0001;
+    public static final int NOT_WRITABLE     = 1 << 0;
 
     /** ECMA 8.6.1 - Is this property not enumerable? */
-    public static final int NOT_ENUMERABLE   = 0b0000_0000_0010;
+    public static final int NOT_ENUMERABLE   = 1 << 1;
 
     /** ECMA 8.6.1 - Is this property not configurable? */
-    public static final int NOT_CONFIGURABLE = 0b0000_0000_0100;
+    public static final int NOT_CONFIGURABLE = 1 << 2;
 
-    private static final int MODIFY_MASK     = 0b0000_0000_1111;
+    private static final int MODIFY_MASK     = (NOT_WRITABLE | NOT_ENUMERABLE | NOT_CONFIGURABLE);
 
     /** Is this a spill property? See {@link AccessorProperty} */
-    public static final int IS_SPILL         = 0b0000_0001_0000;
+    public static final int IS_SPILL         = 1 << 3;
 
     /** Is this a function parameter? */
-    public static final int IS_PARAMETER     = 0b0000_0010_0000;
+    public static final int IS_PARAMETER     = 1 << 4;
 
     /** Is parameter accessed thru arguments? */
-    public static final int HAS_ARGUMENTS    = 0b0000_0100_0000;
+    public static final int HAS_ARGUMENTS    = 1 << 5;
 
     /** Is this property always represented as an Object? See {@link ObjectClassGenerator} and dual fields flag. */
-    public static final int IS_ALWAYS_OBJECT = 0b0000_1000_0000;
+    public static final int IS_ALWAYS_OBJECT = 1 << 6;
 
     /** Can this property be primitive? */
-    public static final int CAN_BE_PRIMITIVE = 0b0001_0000_0000;
+    public static final int CAN_BE_PRIMITIVE = 1 << 7;
 
     /** Can this property be undefined? */
-    public static final int CAN_BE_UNDEFINED = 0b0010_0000_0000;
+    public static final int CAN_BE_UNDEFINED = 1 << 8;
+
+    /* Is this a function declaration property ? */
+    public static final int IS_FUNCTION_DECLARATION = 1 << 9;
 
     /** Property key. */
     private final String key;
@@ -522,4 +525,12 @@ public abstract class Property {
     public boolean canBeUndefined() {
         return (flags & CAN_BE_UNDEFINED) == CAN_BE_UNDEFINED;
     }
+
+    /**
+     * Check whether this property represents a function declaration.
+     * @return whether this property is a function declaration or not.
+     */
+    public boolean isFunctionDeclaration() {
+        return (flags & IS_FUNCTION_DECLARATION) == IS_FUNCTION_DECLARATION;
+    }
 }
diff --git a/src/jdk/nashorn/internal/runtime/PropertyMap.java b/src/jdk/nashorn/internal/runtime/PropertyMap.java
index e24364d6..03c4978a 100644
--- a/src/jdk/nashorn/internal/runtime/PropertyMap.java
+++ b/src/jdk/nashorn/internal/runtime/PropertyMap.java
@@ -26,6 +26,8 @@
 package jdk.nashorn.internal.runtime;
 
 import static jdk.nashorn.internal.runtime.PropertyHashMap.EMPTY_HASHMAP;
+import static jdk.nashorn.internal.runtime.arrays.ArrayIndex.getArrayIndex;
+import static jdk.nashorn.internal.runtime.arrays.ArrayIndex.isValidArrayIndex;
 
 import java.lang.invoke.SwitchPoint;
 import java.lang.ref.WeakReference;
@@ -50,6 +52,8 @@ import java.util.WeakHashMap;
 public final class PropertyMap implements Iterable<Object>, PropertyListener {
     /** Used for non extensible PropertyMaps, negative logic as the normal case is extensible. See {@link ScriptObject#preventExtensions()} */
     public static final int NOT_EXTENSIBLE        = 0b0000_0001;
+    /** Does this map contain valid array keys? */
+    public static final int CONTAINS_ARRAY_KEYS   = 0b0000_0010;
     /** This mask is used to preserve certain flags when cloning the PropertyMap. Others should not be copied */
     private static final int CLONEABLE_FLAGS_MASK = 0b0000_1111;
     /** Has a listener been added to this property map. This flag is not copied when cloning a map. See {@link PropertyListener} */
@@ -91,12 +95,16 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
      * @param fieldCount   Number of fields in use.
      * @param fieldMaximum Number of fields available.
      * @param spillLength  Number of spill slots used.
+     * @param containsArrayKeys True if properties contain numeric keys
      */
-    private PropertyMap(final PropertyHashMap properties, final int fieldCount, final int fieldMaximum, final int spillLength) {
+    private PropertyMap(final PropertyHashMap properties, final int fieldCount, final int fieldMaximum, final int spillLength, final boolean containsArrayKeys) {
         this.properties   = properties;
         this.fieldCount   = fieldCount;
         this.fieldMaximum = fieldMaximum;
         this.spillLength  = spillLength;
+        if (containsArrayKeys) {
+            setContainsArrayKeys();
+        }
 
         if (Context.DEBUG) {
             count++;
@@ -104,15 +112,6 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
     }
 
     /**
-     * Constructor.
-     *
-     * @param properties A {@link PropertyHashMap} with initial contents.
-     */
-    private PropertyMap(final PropertyHashMap properties) {
-        this(properties, 0, 0, 0);
-    }
-
-    /**
      * Cloning constructor.
      *
      * @param propertyMap Existing property map.
@@ -152,12 +151,15 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
         if (Context.DEBUG) {
             duplicatedCount++;
         }
-        return new PropertyMap(this.properties);
+        return new PropertyMap(this.properties, 0, 0, 0, containsArrayKeys());
     }
 
     /**
      * Public property map allocator.
      *
+     * <p>It is the caller's responsibility to make sure that {@code properties} does not contain
+     * properties with keys that are valid array indices.</p>
+     *
      * @param properties   Collection of initial properties.
      * @param fieldCount   Number of fields in use.
      * @param fieldMaximum Number of fields available.
@@ -166,11 +168,15 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
      */
     public static PropertyMap newMap(final Collection<Property> properties, final int fieldCount, final int fieldMaximum,  final int spillLength) {
         PropertyHashMap newProperties = EMPTY_HASHMAP.immutableAdd(properties);
-        return new PropertyMap(newProperties, fieldCount, fieldMaximum, spillLength);
+        return new PropertyMap(newProperties, fieldCount, fieldMaximum, spillLength, false);
     }
 
     /**
      * Public property map allocator. Used by nasgen generated code.
+     *
+     * <p>It is the caller's responsibility to make sure that {@code properties} does not contain
+     * properties with keys that are valid array indices.</p>
+     *
      * @param properties Collection of initial properties.
      * @return New {@link PropertyMap}.
      */
@@ -184,7 +190,7 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
      * @return New empty {@link PropertyMap}.
      */
     public static PropertyMap newMap() {
-        return new PropertyMap(EMPTY_HASHMAP);
+        return new PropertyMap(EMPTY_HASHMAP, 0, 0, 0, false);
     }
 
     /**
@@ -294,6 +300,9 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
             if(!property.isSpill()) {
                 newMap.fieldCount = Math.max(newMap.fieldCount, property.getSlot() + 1);
             }
+            if (isValidArrayIndex(getArrayIndex(property.getKey()))) {
+                newMap.setContainsArrayKeys();
+            }
 
             newMap.spillLength += property.getSpillCount();
         }
@@ -408,6 +417,9 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
 
         final PropertyMap newMap = new PropertyMap(this, newProperties);
         for (final Property property : otherProperties) {
+            if (isValidArrayIndex(getArrayIndex(property.getKey()))) {
+                newMap.setContainsArrayKeys();
+            }
             newMap.spillLength += property.getSpillCount();
         }
 
@@ -700,6 +712,22 @@ public final class PropertyMap implements Iterable<Object>, PropertyListener {
     }
 
     /**
+     * Check if this map contains properties with valid array keys
+     *
+     * @return {@code true} if this map contains properties with valid array keys
+     */
+    public final boolean containsArrayKeys() {
+        return (flags & CONTAINS_ARRAY_KEYS) != 0;
+    }
+
+    /**
+     * Flag this object as having array keys in defined properties
+     */
+    private void setContainsArrayKeys() {
+        flags |= CONTAINS_ARRAY_KEYS;
+    }
+
+    /**
      * Check whether a {@link PropertyListener} has been added to this map.
      *
      * @return {@code true} if {@link PropertyListener} exists
diff --git a/src/jdk/nashorn/internal/runtime/RecompilableScriptFunctionData.java b/src/jdk/nashorn/internal/runtime/RecompilableScriptFunctionData.java
index a64479a5..e5ca3c9a 100644
--- a/src/jdk/nashorn/internal/runtime/RecompilableScriptFunctionData.java
+++ b/src/jdk/nashorn/internal/runtime/RecompilableScriptFunctionData.java
@@ -33,6 +33,7 @@ import java.lang.invoke.MethodType;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.LinkedList;
+import jdk.internal.dynalink.support.NameCodec;
 
 import jdk.nashorn.internal.codegen.Compiler;
 import jdk.nashorn.internal.codegen.CompilerConstants;
@@ -52,7 +53,7 @@ import jdk.nashorn.internal.parser.TokenType;
 public final class RecompilableScriptFunctionData extends ScriptFunctionData {
 
     /** FunctionNode with the code for this ScriptFunction */
-    private volatile FunctionNode functionNode;
+    private FunctionNode functionNode;
 
     /** Source from which FunctionNode was parsed. */
     private final Source source;
@@ -64,7 +65,7 @@ public final class RecompilableScriptFunctionData extends ScriptFunctionData {
     private final PropertyMap allocatorMap;
 
     /** Code installer used for all further recompilation/specialization of this ScriptFunction */
-    private volatile CodeInstaller<ScriptEnvironment> installer;
+    private CodeInstaller<ScriptEnvironment> installer;
 
     /** Name of class where allocator function resides */
     private final String allocatorClassName;
@@ -100,9 +101,7 @@ public final class RecompilableScriptFunctionData extends ScriptFunctionData {
      * @param allocatorMap       allocator map to seed instances with, when constructing
      */
     public RecompilableScriptFunctionData(final FunctionNode functionNode, final CodeInstaller<ScriptEnvironment> installer, final String allocatorClassName, final PropertyMap allocatorMap) {
-        super(functionNode.isAnonymous() ?
-                "" :
-                functionNode.getIdent().getName(),
+        super(functionName(functionNode),
               functionNode.getParameters().size(),
               functionNode.isStrict(),
               false,
@@ -132,13 +131,27 @@ public final class RecompilableScriptFunctionData extends ScriptFunctionData {
         if (source != null) {
             sb.append(source.getName())
                 .append(':')
-                .append(source.getLine(Token.descPosition(token)))
+                .append(functionNode.getLineNumber())
                 .append(' ');
         }
 
         return sb.toString() + super.toString();
     }
 
+    private static String functionName(final FunctionNode fn) {
+        if (fn.isAnonymous()) {
+            return "";
+        } else {
+            final FunctionNode.Kind kind = fn.getKind();
+            if (kind == FunctionNode.Kind.GETTER || kind == FunctionNode.Kind.SETTER) {
+                final String name = NameCodec.decode(fn.getIdent().getName());
+                return name.substring(4); // 4 is "get " or "set "
+            } else {
+                return fn.getIdent().getName();
+            }
+        }
+    }
+
     private static long tokenFor(final FunctionNode fn) {
         final int  position   = Token.descPosition(fn.getFirstToken());
         final int  length     = Token.descPosition(fn.getLastToken()) - position + Token.descLength(fn.getLastToken());
@@ -165,7 +178,7 @@ public final class RecompilableScriptFunctionData extends ScriptFunctionData {
     }
 
     @Override
-    protected void ensureCodeGenerated() {
+    protected synchronized void ensureCodeGenerated() {
          if (!code.isEmpty()) {
              return; // nothing to do, we have code, at least some.
          }
@@ -323,7 +336,7 @@ public final class RecompilableScriptFunctionData extends ScriptFunctionData {
     }
 
     @Override
-    MethodHandle getBestInvoker(final MethodType callSiteType, final Object[] args) {
+    synchronized MethodHandle getBestInvoker(final MethodType callSiteType, final Object[] args) {
         final MethodType runtimeType = runtimeType(callSiteType, args);
         assert runtimeType.parameterCount() == callSiteType.parameterCount();
 
diff --git a/src/jdk/nashorn/internal/runtime/ScriptFunction.java b/src/jdk/nashorn/internal/runtime/ScriptFunction.java
index 14aab756..ae59855c 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptFunction.java
+++ b/src/jdk/nashorn/internal/runtime/ScriptFunction.java
@@ -59,6 +59,9 @@ public abstract class ScriptFunction extends ScriptObject {
     /** Method handle for name getter for this ScriptFunction */
     public static final MethodHandle G$NAME = findOwnMH("G$name", Object.class, Object.class);
 
+    /** Method handle used for implementing sync() in mozilla_compat */
+    public static final MethodHandle INVOKE_SYNC = findOwnMH("invokeSync", Object.class, ScriptFunction.class, Object.class, Object.class, Object[].class);
+
     /** Method handle for allocate function for this ScriptFunction */
     static final MethodHandle ALLOCATE = findOwnMH("allocate", Object.class);
 
@@ -301,6 +304,14 @@ public abstract class ScriptFunction extends ScriptObject {
     public abstract void setPrototype(Object prototype);
 
     /**
+     * Create a function that invokes this function synchronized on {@code sync} or the self object
+     * of the invocation.
+     * @param sync the Object to synchronize on, or undefined
+     * @return synchronized function
+     */
+    public abstract ScriptFunction makeSynchronizedFunction(Object sync);
+
+    /**
      * Return the most appropriate invoke handle if there are specializations
      * @param type most specific method type to look for invocation with
      * @param args args for trampoline invocation
@@ -326,7 +337,7 @@ public abstract class ScriptFunction extends ScriptObject {
      * @param self self reference
      * @return bound invoke handle
      */
-    public final MethodHandle getBoundInvokeHandle(final ScriptObject self) {
+    public final MethodHandle getBoundInvokeHandle(final Object self) {
         return MH.bindTo(bindToCalleeIfNeeded(data.getGenericInvoker()), self);
     }
 
@@ -614,6 +625,15 @@ public abstract class ScriptFunction extends ScriptObject {
         return result;
     }
 
+    @SuppressWarnings("unused")
+    private static Object invokeSync(final ScriptFunction func, final Object sync, final Object self, final Object... args)
+            throws Throwable {
+        final Object syncObj = sync == UNDEFINED ? self : sync;
+        synchronized (syncObj) {
+            return func.invoke(self, args);
+        }
+    }
+
     private static MethodHandle findOwnMH(final String name, final Class<?> rtype, final Class<?>... types) {
         final Class<?>   own = ScriptFunction.class;
         final MethodType mt  = MH.type(rtype, types);
diff --git a/src/jdk/nashorn/internal/runtime/ScriptFunctionData.java b/src/jdk/nashorn/internal/runtime/ScriptFunctionData.java
index 06a12c00..4dbbfba9 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptFunctionData.java
+++ b/src/jdk/nashorn/internal/runtime/ScriptFunctionData.java
@@ -213,13 +213,13 @@ public abstract class ScriptFunctionData {
      */
     public final MethodHandle getGenericInvoker() {
         ensureCodeGenerated();
-        return composeGenericMethod(code.mostGeneric().getInvoker());
+        return code.generic().getInvoker();
     }
 
     final MethodHandle getGenericConstructor() {
         ensureCodeGenerated();
-        ensureConstructor(code.mostGeneric());
-        return composeGenericMethod(code.mostGeneric().getConstructor());
+        ensureConstructor(code.generic());
+        return code.generic().getConstructor();
     }
 
     private CompiledFunction getBest(final MethodType callSiteType) {
@@ -267,18 +267,17 @@ public abstract class ScriptFunctionData {
     }
 
     /**
-     * Compose a constructor given a primordial constructor handle
-     *
-     * @param ctor         primordial constructor handle
-     * @param needsCallee  do we need to pass a callee
+     * Compose a constructor given a primordial constructor handle.
      *
+     * @param ctor primordial constructor handle
      * @return the composed constructor
      */
-    protected MethodHandle composeConstructor(final MethodHandle ctor, final boolean needsCallee) {
+    protected MethodHandle composeConstructor(final MethodHandle ctor) {
         // If it was (callee, this, args...), permute it to (this, callee, args...). We're doing this because having
         // "this" in the first argument position is what allows the elegant folded composition of
         // (newFilter x constructor x allocator) further down below in the code. Also, ensure the composite constructor
         // always returns Object.
+        final boolean needsCallee = needsCallee(ctor);
         MethodHandle composedCtor = needsCallee ? swapCalleeAndThis(ctor) : ctor;
 
         composedCtor = changeReturnTypeToObject(composedCtor);
@@ -472,33 +471,6 @@ public abstract class ScriptFunctionData {
     }
 
     /**
-     * Takes a method handle, and returns a potentially different method handle that can be used in
-     * {@code ScriptFunction#invoke(Object, Object...)} or {code ScriptFunction#construct(Object, Object...)}.
-     * The returned method handle will be sure to return {@code Object}, and will have all its parameters turned into
-     * {@code Object} as well, except for the following ones:
-     * <ul>
-     *   <li>a last parameter of type {@code Object[]} which is used for vararg functions,</li>
-     *   <li>the first argument, which is forced to be {@link ScriptFunction}, in case the function receives itself
-     *   (callee) as an argument.</li>
-     * </ul>
-     *
-     * @param mh the original method handle
-     *
-     * @return the new handle, conforming to the rules above.
-     */
-    protected MethodHandle composeGenericMethod(final MethodHandle mh) {
-        final MethodType type = mh.type();
-        MethodType newType = type.generic();
-        if (isVarArg(mh)) {
-            newType = newType.changeParameterType(type.parameterCount() - 1, Object[].class);
-        }
-        if (needsCallee(mh)) {
-            newType = newType.changeParameterType(0, ScriptFunction.class);
-        }
-        return type.equals(newType) ? mh : mh.asType(newType);
-    }
-
-    /**
      * Execute this script function.
      *
      * @param self  Target object.
@@ -508,10 +480,9 @@ public abstract class ScriptFunctionData {
      * @throws Throwable if there is an exception/error with the invocation or thrown from it
      */
     Object invoke(final ScriptFunction fn, final Object self, final Object... arguments) throws Throwable {
-        final MethodHandle mh = getGenericInvoker();
-
-        final Object       selfObj    = convertThisObject(self);
-        final Object[]     args       = arguments == null ? ScriptRuntime.EMPTY_ARRAY : arguments;
+        final MethodHandle mh  = getGenericInvoker();
+        final Object   selfObj = convertThisObject(self);
+        final Object[] args    = arguments == null ? ScriptRuntime.EMPTY_ARRAY : arguments;
 
         if (isVarArg(mh)) {
             if (needsCallee(mh)) {
@@ -531,6 +502,12 @@ public abstract class ScriptFunctionData {
                 return mh.invokeExact(fn, selfObj, getArg(args, 0), getArg(args, 1));
             case 5:
                 return mh.invokeExact(fn, selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2));
+            case 6:
+                return mh.invokeExact(fn, selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3));
+            case 7:
+                return mh.invokeExact(fn, selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4));
+            case 8:
+                return mh.invokeExact(fn, selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4), getArg(args, 5));
             default:
                 return mh.invokeWithArguments(withArguments(fn, selfObj, paramCount, args));
             }
@@ -545,15 +522,20 @@ public abstract class ScriptFunctionData {
             return mh.invokeExact(selfObj, getArg(args, 0), getArg(args, 1));
         case 4:
             return mh.invokeExact(selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2));
+        case 5:
+            return mh.invokeExact(selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3));
+        case 6:
+            return mh.invokeExact(selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4));
+        case 7:
+            return mh.invokeExact(selfObj, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4), getArg(args, 5));
         default:
             return mh.invokeWithArguments(withArguments(null, selfObj, paramCount, args));
         }
     }
 
     Object construct(final ScriptFunction fn, final Object... arguments) throws Throwable {
-        final MethodHandle mh = getGenericConstructor();
-
-        final Object[]     args       = arguments == null ? ScriptRuntime.EMPTY_ARRAY : arguments;
+        final MethodHandle mh   = getGenericConstructor();
+        final Object[]     args = arguments == null ? ScriptRuntime.EMPTY_ARRAY : arguments;
 
         if (isVarArg(mh)) {
             if (needsCallee(mh)) {
@@ -573,6 +555,12 @@ public abstract class ScriptFunctionData {
                 return mh.invokeExact(fn, getArg(args, 0), getArg(args, 1));
             case 4:
                 return mh.invokeExact(fn, getArg(args, 0), getArg(args, 1), getArg(args, 2));
+            case 5:
+                return mh.invokeExact(fn, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3));
+            case 6:
+                return mh.invokeExact(fn, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4));
+            case 7:
+                return mh.invokeExact(fn, getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4), getArg(args, 5));
             default:
                 return mh.invokeWithArguments(withArguments(fn, paramCount, args));
             }
@@ -587,6 +575,12 @@ public abstract class ScriptFunctionData {
             return mh.invokeExact(getArg(args, 0), getArg(args, 1));
         case 3:
             return mh.invokeExact(getArg(args, 0), getArg(args, 1), getArg(args, 2));
+        case 4:
+            return mh.invokeExact(getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3));
+        case 5:
+            return mh.invokeExact(getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4));
+        case 6:
+            return mh.invokeExact(getArg(args, 0), getArg(args, 1), getArg(args, 2), getArg(args, 3), getArg(args, 4), getArg(args, 5));
         default:
             return mh.invokeWithArguments(withArguments(null, paramCount, args));
         }
@@ -664,20 +658,21 @@ public abstract class ScriptFunctionData {
      * @return the adapted handle
      */
     private static MethodHandle changeReturnTypeToObject(final MethodHandle mh) {
-        return MH.asType(mh, mh.type().changeReturnType(Object.class));
+        final MethodType type = mh.type();
+        return (type.returnType() == Object.class) ? mh : MH.asType(mh, type.changeReturnType(Object.class));
     }
 
     private void ensureConstructor(final CompiledFunction inv) {
         if (!inv.hasConstructor()) {
-            inv.setConstructor(composeConstructor(inv.getInvoker(), needsCallee(inv.getInvoker())));
+            inv.setConstructor(composeConstructor(inv.getInvoker()));
         }
     }
 
     /**
-     * Heuristic to figure out if the method handle has a callee argument. If it's type is either
-     * {@code (boolean, Object, ScriptFunction, ...)} or {@code (Object, ScriptFunction, ...)}, then we'll assume it has
-     * a callee argument. We need this as the constructor above is not passed this information, and can't just blindly
-     * assume it's false (notably, it's being invoked for creation of new scripts, and scripts have scopes, therefore
+     * Heuristic to figure out if the method handle has a callee argument. If it's type is
+     * {@code (ScriptFunction, ...)}, then we'll assume it has a callee argument. We need this as
+     * the constructor above is not passed this information, and can't just blindly assume it's false
+     * (notably, it's being invoked for creation of new scripts, and scripts have scopes, therefore
      * they also always receive a callee).
      *
      * @param mh the examined method handle
@@ -685,18 +680,8 @@ public abstract class ScriptFunctionData {
      * @return true if the method handle expects a callee, false otherwise
      */
     protected static boolean needsCallee(final MethodHandle mh) {
-        final MethodType type   = mh.type();
-        final int        length = type.parameterCount();
-
-        if (length == 0) {
-            return false;
-        }
-
-        if (type.parameterType(0) == boolean.class) {
-            return length > 1 && type.parameterType(1) == ScriptFunction.class;
-        }
-
-        return type.parameterType(0) == ScriptFunction.class;
+        final MethodType type = mh.type();
+        return (type.parameterCount() > 0 && type.parameterType(0) == ScriptFunction.class);
     }
 
     /**
diff --git a/src/jdk/nashorn/internal/runtime/ScriptLoader.java b/src/jdk/nashorn/internal/runtime/ScriptLoader.java
index 736932ea..78185b1c 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptLoader.java
+++ b/src/jdk/nashorn/internal/runtime/ScriptLoader.java
@@ -52,23 +52,10 @@ final class ScriptLoader extends NashornLoader {
     @Override
     protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
         checkPackageAccess(name);
-        try {
-            return super.loadClass(name, resolve);
-        } catch (final ClassNotFoundException | SecurityException e) {
-            // We'll get ClassNotFoundException for Nashorn 'struct' classes.
-            // Also, we'll get SecurityException for jdk.nashorn.internal.*
-            // classes. So, load these using to context's 'shared' loader.
-            // All these classes start with "jdk.nashorn.internal." prefix.
-            try {
-                if (name.startsWith(NASHORN_PKG_PREFIX)) {
-                    return context.getSharedLoader().loadClass(name);
-                }
-            } catch (final ClassNotFoundException ignored) {
-            }
-
-            // throw the original exception from here
-            throw e;
+        if (name.startsWith(NASHORN_PKG_PREFIX)) {
+            return context.getSharedLoader().loadClass(name);
         }
+        return super.loadClass(name, resolve);
     }
 
     // package-private and private stuff below this point
diff --git a/src/jdk/nashorn/internal/runtime/ScriptObject.java b/src/jdk/nashorn/internal/runtime/ScriptObject.java
index a4ca6017..c7c82027 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptObject.java
+++ b/src/jdk/nashorn/internal/runtime/ScriptObject.java
@@ -37,6 +37,8 @@ import static jdk.nashorn.internal.runtime.PropertyDescriptor.SET;
 import static jdk.nashorn.internal.runtime.PropertyDescriptor.VALUE;
 import static jdk.nashorn.internal.runtime.PropertyDescriptor.WRITABLE;
 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
+import static jdk.nashorn.internal.runtime.arrays.ArrayIndex.getArrayIndex;
+import static jdk.nashorn.internal.runtime.arrays.ArrayIndex.isValidArrayIndex;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -131,6 +133,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     static final MethodHandle GETPROTO           = findOwnMH("getProto", ScriptObject.class);
     static final MethodHandle SETPROTOCHECK      = findOwnMH("setProtoCheck", void.class, Object.class);
+    static final MethodHandle MEGAMORPHIC_GET    = findOwnMH("megamorphicGet", Object.class, String.class, boolean.class);
 
     static final MethodHandle SETFIELD           = findOwnMH("setField",         void.class, CallSiteDescriptor.class, PropertyMap.class, PropertyMap.class, MethodHandle.class, Object.class, Object.class);
     static final MethodHandle SETSPILL           = findOwnMH("setSpill",         void.class, CallSiteDescriptor.class, PropertyMap.class, PropertyMap.class, int.class, Object.class, Object.class);
@@ -223,14 +226,23 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
         for (final Property property : properties) {
             final String key = property.getKey();
-
-            if (newMap.findProperty(key) == null) {
+            final Property oldProp = newMap.findProperty(key);
+            if (oldProp == null) {
                 if (property instanceof UserAccessorProperty) {
                     final UserAccessorProperty prop = this.newUserAccessors(key, property.getFlags(), property.getGetterFunction(source), property.getSetterFunction(source));
                     newMap = newMap.addProperty(prop);
                 } else {
                     newMap = newMap.addPropertyBind((AccessorProperty)property, source);
                 }
+            } else {
+                // See ECMA section 10.5 Declaration Binding Instantiation
+                // step 5 processing each function declaration.
+                if (property.isFunctionDeclaration() && !oldProp.isConfigurable()) {
+                     if (oldProp instanceof UserAccessorProperty ||
+                         !(oldProp.isWritable() && oldProp.isEnumerable())) {
+                         throw typeError("cant.redefine.property", key, ScriptRuntime.safeToString(this));
+                     }
+                }
             }
         }
 
@@ -388,7 +400,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return global.newDataDescriptor(getWithProperty(property), configurable, enumerable, writable);
         }
 
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -505,7 +517,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             if (property == null) {
                 // promoting an arrayData value to actual property
                 addOwnProperty(key, propFlags, value);
-                removeArraySlot(key);
+                checkIntegerKey(key);
             } else {
                 // Now set the new flags
                 modifyOwnProperty(property, propFlags);
@@ -591,8 +603,8 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
      * @param index key for property
      * @param value value to define
      */
-    protected final void defineOwnProperty(final int index, final Object value) {
-        assert ArrayIndex.isValidArrayIndex(index) : "invalid array index";
+    public final void defineOwnProperty(final int index, final Object value) {
+        assert isValidArrayIndex(index) : "invalid array index";
         final long longIndex = ArrayIndex.toLongIndex(index);
         if (longIndex >= getArray().length()) {
             // make array big enough to hold..
@@ -602,9 +614,9 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
     }
 
     private void checkIntegerKey(final String key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             final ArrayData data = getArray();
 
             if (data.has(index)) {
@@ -613,15 +625,6 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
         }
     }
 
-    private void removeArraySlot(final String key) {
-        final int index = ArrayIndex.getArrayIndex(key);
-        final ArrayData array = getArray();
-
-        if (array.has(index)) {
-            setArray(array.delete(index));
-        }
-    }
-
     /**
       * Add a new property to the object.
       *
@@ -717,6 +720,28 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
     }
 
     /**
+     * Low level property API. This is similar to {@link #findProperty(String, boolean)} but returns a
+     * {@code boolean} value instead of a {@link FindProperty} object.
+     * @param key  Property key.
+     * @param deep Whether the search should look up proto chain.
+     * @return true if the property was found.
+     */
+    boolean hasProperty(final String key, final boolean deep) {
+        if (getMap().findProperty(key) != null) {
+            return true;
+        }
+
+        if (deep) {
+            final ScriptObject myProto = getProto();
+            if (myProto != null) {
+                return myProto.hasProperty(key, deep);
+            }
+        }
+
+        return false;
+    }
+
+    /**
      * Add a new property to the object.
      * <p>
      * This a more "low level" way that doesn't involve {@link PropertyDescriptor}s
@@ -1178,21 +1203,10 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
      * Check if this ScriptObject has array entries. This means that someone has
      * set values with numeric keys in the object.
      *
-     * Note: this can be O(n) up to the array length
-     *
      * @return true if array entries exists.
      */
     public boolean hasArrayEntries() {
-        final ArrayData array = getArray();
-        final long length = array.length();
-
-        for (long i = 0; i < length; i++) {
-            if (array.has((int)i)) {
-                return true;
-            }
-        }
-
-        return false;
+        return getArray().length() > 0 || getMap().containsArrayKeys();
     }
 
     /**
@@ -1708,8 +1722,11 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
      */
     protected GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) {
         final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
-        final FindProperty find = findProperty(name, true);
+        if (request.isCallSiteUnstable()) {
+            return findMegaMorphicGetMethod(desc, name, "getMethod".equals(operator));
+        }
 
+        final FindProperty find = findProperty(name, true);
         MethodHandle methodHandle;
 
         if (find == null) {
@@ -1727,10 +1744,6 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             throw new AssertionError(); // never invoked with any other operation
         }
 
-        if (request.isCallSiteUnstable()) {
-            return findMegaMorphicGetMethod(desc, name);
-        }
-
         final Class<?> returnType = desc.getMethodType().returnType();
         final Property property = find.getProperty();
         methodHandle = find.getGetter(returnType);
@@ -1757,11 +1770,21 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
         return new GuardedInvocation(Lookup.emptyGetter(returnType), getMap().getProtoGetSwitchPoint(proto, name), guard);
     }
 
-    private static GuardedInvocation findMegaMorphicGetMethod(final CallSiteDescriptor desc, final String name) {
-        final MethodType mhType = desc.getMethodType().insertParameterTypes(1, Object.class);
-        final GuardedInvocation inv = findGetIndexMethod(mhType);
+    private static GuardedInvocation findMegaMorphicGetMethod(final CallSiteDescriptor desc, final String name, final boolean isMethod) {
+        final MethodHandle invoker = MH.insertArguments(MEGAMORPHIC_GET, 1, name, isMethod);
+        final MethodHandle guard = getScriptObjectGuard(desc.getMethodType());
+        return new GuardedInvocation(invoker, guard);
+    }
 
-        return inv.replaceMethods(MH.insertArguments(inv.getInvocation(), 1, name), inv.getGuard());
+    @SuppressWarnings("unused")
+    private Object megamorphicGet(final String key, final boolean isMethod) {
+        final FindProperty find = findProperty(key, true);
+
+        if (find != null) {
+            return getObjectValue(find);
+        }
+
+        return isMethod ? getNoSuchMethod(key) : invokeNoSuchProperty(key);
     }
 
     /**
@@ -1810,7 +1833,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
      */
     protected GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) {
         final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
-        if(request.isCallSiteUnstable()) {
+        if (request.isCallSiteUnstable()) {
             return findMegaMorphicSetMethod(desc, name);
         }
 
@@ -2045,6 +2068,26 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
         return UNDEFINED;
     }
 
+    /**
+     * Get __noSuchMethod__ as a function bound to this object and {@code name} if it is defined.
+     * @param name the method name
+     * @return the bound function, or undefined
+     */
+    private Object getNoSuchMethod(final String name) {
+        final FindProperty find = findProperty(NO_SUCH_METHOD_NAME, true);
+
+        if (find == null) {
+            return invokeNoSuchProperty(name);
+        }
+
+        final Object value = getObjectValue(find);
+        if (! (value instanceof ScriptFunction)) {
+            return UNDEFINED;
+        }
+
+        return ((ScriptFunction)value).makeBoundFunction(this, new Object[] {name});
+    }
+
     private GuardedInvocation createEmptyGetter(final CallSiteDescriptor desc, final String name) {
         return new GuardedInvocation(Lookup.emptyGetter(desc.getMethodType().returnType()), getMap().getProtoGetSwitchPoint(proto, name), NashornGuards.getMapGuard(getMap()));
     }
@@ -2302,13 +2345,34 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
        }
 
        if (newLength < arrayLength) {
-           setArray(getArray().shrink(newLength));
-           getArray().setLength(newLength);
+           long actualLength = newLength;
+
+           // Check for numeric keys in property map and delete them or adjust length, depending on whether
+           // they're defined as configurable. See ES5 #15.4.5.2
+           if (getMap().containsArrayKeys()) {
+
+               for (long l = arrayLength - 1; l >= newLength; l--) {
+                   final FindProperty find = findProperty(JSType.toString(l), false);
+
+                   if (find != null) {
+
+                       if (find.getProperty().isConfigurable()) {
+                           deleteOwnProperty(find.getProperty());
+                       } else {
+                           actualLength = l + 1;
+                           break;
+                       }
+                   }
+               }
+           }
+
+           setArray(getArray().shrink(actualLength));
+           getArray().setLength(actualLength);
        }
     }
 
     private int getInt(final int index, final String key) {
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
              for (ScriptObject object = this; ; ) {
                 final FindProperty find = object.findProperty(key, false, false, this);
 
@@ -2339,7 +2403,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public int getInt(final Object key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2351,7 +2415,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public int getInt(final double key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2363,7 +2427,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public int getInt(final long key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2385,7 +2449,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
     }
 
     private long getLong(final int index, final String key) {
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject object = this; ; ) {
                 final FindProperty find = object.findProperty(key, false, false, this);
 
@@ -2416,7 +2480,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public long getLong(final Object key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2428,7 +2492,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public long getLong(final double key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2440,7 +2504,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public long getLong(final long key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2462,7 +2526,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
     }
 
     private double getDouble(final int index, final String key) {
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject object = this; ; ) {
                 final FindProperty find = object.findProperty(key, false, false, this);
 
@@ -2493,7 +2557,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public double getDouble(final Object key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2505,7 +2569,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public double getDouble(final double key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2517,7 +2581,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public double getDouble(final long key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2539,7 +2603,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
     }
 
     private Object get(final int index, final String key) {
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject object = this; ; ) {
                 final FindProperty find = object.findProperty(key, false, false, this);
 
@@ -2570,7 +2634,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public Object get(final Object key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2582,7 +2646,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public Object get(final double key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2594,7 +2658,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public Object get(final long key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -2626,7 +2690,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
         final long oldLength = getArray().length();
         final long longIndex = index & JSType.MAX_UINT;
 
-        if (!getArray().has(index)) {
+        if (getMap().containsArrayKeys()) {
             final String key = JSType.toString(longIndex);
             final FindProperty find = findProperty(key, true);
 
@@ -2710,9 +2774,9 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public void set(final Object key, final int value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2722,14 +2786,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(key, JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final Object key, final long value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2739,14 +2804,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(key, JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final Object key, final double value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2756,14 +2822,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(key, JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final Object key, final Object value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2773,17 +2840,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        final String       propName = JSType.toString(key);
-        final FindProperty find     = findProperty(propName, true);
-
-        setObject(find, strict, propName, value);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, value);
     }
 
     @Override
     public void set(final double key, final int value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2793,14 +2858,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final double key, final long value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2810,14 +2876,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final double key, final double value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2827,14 +2894,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final double key, final Object value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2844,14 +2912,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), value, strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, value);
     }
 
     @Override
     public void set(final long key, final int value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2861,14 +2930,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final long key, final long value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2878,14 +2948,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final long key, final double value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2895,14 +2966,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final long key, final Object value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2912,14 +2984,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), value, strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, value);
     }
 
     @Override
     public void set(final int key, final int value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2929,14 +3002,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final int key, final long value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2946,14 +3020,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final int key, final double value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2963,14 +3038,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), JSType.toObject(value), strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, JSType.toObject(value));
     }
 
     @Override
     public void set(final int key, final Object value, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             if (getArray().has(index)) {
                 setArray(getArray().set(index, value, strict));
             } else {
@@ -2980,14 +3056,15 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             return;
         }
 
-        set(JSType.toObject(key), value, strict);
+        final String propName = JSType.toString(key);
+        setObject(findProperty(propName, true), strict, propName, value);
     }
 
     @Override
     public boolean has(final Object key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject self = this; self != null; self = self.getProto()) {
                 if (self.getArray().has(index)) {
                     return true;
@@ -2995,16 +3072,14 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             }
         }
 
-        final FindProperty find = findProperty(JSType.toString(key), true);
-
-        return find != null;
+        return hasProperty(JSType.toString(key), true);
     }
 
     @Override
     public boolean has(final double key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject self = this; self != null; self = self.getProto()) {
                 if (self.getArray().has(index)) {
                     return true;
@@ -3012,16 +3087,14 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             }
         }
 
-        final FindProperty find = findProperty(JSType.toString(key), true);
-
-        return find != null;
+        return hasProperty(JSType.toString(key), true);
     }
 
     @Override
     public boolean has(final long key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject self = this; self != null; self = self.getProto()) {
                 if (self.getArray().has(index)) {
                     return true;
@@ -3029,16 +3102,14 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             }
         }
 
-        final FindProperty find = findProperty(JSType.toString(key), true);
-
-        return find != null;
+        return hasProperty(JSType.toString(key), true);
     }
 
     @Override
     public boolean has(final int key) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
 
-        if (ArrayIndex.isValidArrayIndex(index)) {
+        if (isValidArrayIndex(index)) {
             for (ScriptObject self = this; self != null; self = self.getProto()) {
                 if (self.getArray().has(index)) {
                     return true;
@@ -3046,66 +3117,32 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
             }
         }
 
-        final FindProperty find = findProperty(JSType.toString(key), true);
-
-        return find != null;
+        return hasProperty(JSType.toString(key), true);
     }
 
     @Override
     public boolean hasOwnProperty(final Object key) {
-        final int index = ArrayIndex.getArrayIndex(key);
-
-        if (getArray().has(index)) {
-            return true;
-        }
-
-        final FindProperty find = findProperty(JSType.toString(key), false);
-
-        return find != null;
+        return getArray().has(getArrayIndex(key)) || hasProperty(JSType.toString(key), false);
     }
 
     @Override
     public boolean hasOwnProperty(final int key) {
-        final int index = ArrayIndex.getArrayIndex(key);
-
-        if (getArray().has(index)) {
-            return true;
-        }
-
-        final FindProperty find = findProperty(JSType.toString(key), false);
-
-        return find != null;
+        return getArray().has(getArrayIndex(key)) || hasProperty(JSType.toString(key), false);
     }
 
     @Override
     public boolean hasOwnProperty(final long key) {
-        final int index = ArrayIndex.getArrayIndex(key);
-
-        if (getArray().has(index)) {
-            return true;
-        }
-
-        final FindProperty find = findProperty(JSType.toString(key), false);
-
-        return find != null;
+        return getArray().has(getArrayIndex(key)) || hasProperty(JSType.toString(key), false);
     }
 
     @Override
     public boolean hasOwnProperty(final double key) {
-        final int index = ArrayIndex.getArrayIndex(key);
-
-        if (getArray().has(index)) {
-            return true;
-        }
-
-        final FindProperty find = findProperty(JSType.toString(key), false);
-
-        return find != null;
+        return getArray().has(getArrayIndex(key)) || hasProperty(JSType.toString(key), false);
     }
 
     @Override
     public boolean delete(final int key, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -3121,7 +3158,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public boolean delete(final long key, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -3137,7 +3174,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public boolean delete(final double key, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
@@ -3153,7 +3190,7 @@ public abstract class ScriptObject extends PropertyListenerManager implements Pr
 
     @Override
     public boolean delete(final Object key, final boolean strict) {
-        final int index = ArrayIndex.getArrayIndex(key);
+        final int index = getArrayIndex(key);
         final ArrayData array = getArray();
 
         if (array.has(index)) {
diff --git a/src/jdk/nashorn/internal/runtime/ScriptRuntime.java b/src/jdk/nashorn/internal/runtime/ScriptRuntime.java
index c9b40512..d9705676 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptRuntime.java
+++ b/src/jdk/nashorn/internal/runtime/ScriptRuntime.java
@@ -47,6 +47,7 @@ import jdk.nashorn.api.scripting.JSObject;
 import jdk.nashorn.api.scripting.ScriptObjectMirror;
 import jdk.nashorn.internal.codegen.CompilerConstants.Call;
 import jdk.nashorn.internal.ir.debug.JSONWriter;
+import jdk.nashorn.internal.objects.Global;
 import jdk.nashorn.internal.parser.Lexer;
 import jdk.nashorn.internal.runtime.linker.Bootstrap;
 
@@ -258,6 +259,11 @@ public final class ScriptRuntime {
             return ((Map<?,?>)obj).keySet().iterator();
         }
 
+        final Object wrapped = Global.instance().wrapAsObject(obj);
+        if (wrapped instanceof ScriptObject) {
+            return ((ScriptObject)wrapped).propertyIterator();
+        }
+
         return Collections.emptyIterator();
     }
 
@@ -336,6 +342,11 @@ public final class ScriptRuntime {
             return ((Iterable<?>)obj).iterator();
         }
 
+        final Object wrapped = Global.instance().wrapAsObject(obj);
+        if (wrapped instanceof ScriptObject) {
+            return ((ScriptObject)wrapped).valueIterator();
+        }
+
         return Collections.emptyIterator();
     }
 
diff --git a/src/jdk/nashorn/internal/runtime/ScriptingFunctions.java b/src/jdk/nashorn/internal/runtime/ScriptingFunctions.java
index 6bd0479f..8a03533e 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptingFunctions.java
+++ b/src/jdk/nashorn/internal/runtime/ScriptingFunctions.java
@@ -190,7 +190,7 @@ public final class ScriptingFunctions {
                 char buffer[] = new char[1024];
                 try (final InputStreamReader inputStream = new InputStreamReader(process.getErrorStream())) {
                     for (int length; (length = inputStream.read(buffer, 0, buffer.length)) != -1; ) {
-                        outBuffer.append(buffer, 0, length);
+                        errBuffer.append(buffer, 0, length);
                     }
                 } catch (IOException ex) {
                     exception[1] = ex;
diff --git a/src/jdk/nashorn/internal/runtime/Source.java b/src/jdk/nashorn/internal/runtime/Source.java
index 9273e7a8..0455a86c 100644
--- a/src/jdk/nashorn/internal/runtime/Source.java
+++ b/src/jdk/nashorn/internal/runtime/Source.java
@@ -272,6 +272,10 @@ public final class Source {
 
     /**
      * Return line number of character position.
+     *
+     * <p>This method can be expensive for large sources as it iterates through
+     * all characters up to {@code position}.</p>
+     *
      * @param position Position of character in source content.
      * @return Line number.
      */
diff --git a/src/jdk/nashorn/internal/runtime/WithObject.java b/src/jdk/nashorn/internal/runtime/WithObject.java
index 7dc8307c..6e03dc60 100644
--- a/src/jdk/nashorn/internal/runtime/WithObject.java
+++ b/src/jdk/nashorn/internal/runtime/WithObject.java
@@ -316,6 +316,10 @@ public final class WithObject extends ScriptObject implements Scope {
         return expression;
     }
 
+    /**
+     * Get the parent scope for this {@code WithObject}
+     * @return the parent scope
+     */
     public ScriptObject getParentScope() {
         return getProto();
     }
diff --git a/src/jdk/nashorn/internal/runtime/arrays/ArrayData.java b/src/jdk/nashorn/internal/runtime/arrays/ArrayData.java
index ca4adb62..5c0c0476 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/ArrayData.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/ArrayData.java
@@ -461,7 +461,23 @@ public abstract class ArrayData {
      */
     public abstract ArrayData slice(long from, long to);
 
-    private static Class<?> widestType(final Object... items) {
+    /**
+     * Fast splice operation. This just modifies the array according to the number of
+     * elements added and deleted but does not insert the added elements. Throws
+     * {@code UnsupportedOperationException} if fast splice operation is not supported
+     * for this class or arguments.
+     *
+     * @param start start index of splice operation
+     * @param removed number of removed elements
+     * @param added number of added elements
+     * @throws UnsupportedOperationException if fast splice is not supported for the class or arguments.
+     */
+    public ArrayData fastSplice(final int start, final int removed, final int added) throws UnsupportedOperationException {
+        throw new UnsupportedOperationException();
+    }
+
+
+    static Class<?> widestType(final Object... items) {
         assert items.length > 0;
 
         Class<?> widest = Integer.class;
diff --git a/src/jdk/nashorn/internal/runtime/arrays/IntArrayData.java b/src/jdk/nashorn/internal/runtime/arrays/IntArrayData.java
index add39912..07ddda2d 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/IntArrayData.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/IntArrayData.java
@@ -269,4 +269,32 @@ final class IntArrayData extends ArrayData {
 
         return new IntArrayData(Arrays.copyOfRange(array, (int)from, (int)to), (int)newLength);
     }
+
+    @Override
+    public ArrayData fastSplice(final int start, final int removed, final int added) throws UnsupportedOperationException {
+        final long oldLength = length();
+        final long newLength = oldLength - removed + added;
+        if (newLength > SparseArrayData.MAX_DENSE_LENGTH && newLength > array.length) {
+            throw new UnsupportedOperationException();
+        }
+        final ArrayData returnValue = (removed == 0) ?
+                EMPTY_ARRAY : new IntArrayData(Arrays.copyOfRange(array, start, start + removed), removed);
+
+        if (newLength != oldLength) {
+            final int[] newArray;
+
+            if (newLength > array.length) {
+                newArray = new int[ArrayData.nextSize((int)newLength)];
+                System.arraycopy(array, 0, newArray, 0, start);
+            } else {
+                newArray = array;
+            }
+
+            System.arraycopy(array, start + removed, newArray, start + added, (int)(oldLength - start - removed));
+            array = newArray;
+            setLength(newLength);
+        }
+
+        return returnValue;
+    }
 }
diff --git a/src/jdk/nashorn/internal/runtime/arrays/JavaArrayIterator.java b/src/jdk/nashorn/internal/runtime/arrays/JavaArrayIterator.java
index 92a80029..a6b6bb9a 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/JavaArrayIterator.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/JavaArrayIterator.java
@@ -77,4 +77,4 @@ class JavaArrayIterator extends ArrayLikeIterator<Object> {
     public void remove() {
         throw new UnsupportedOperationException("remove");
     }
-}
-\ No newline at end of file
+}
diff --git a/src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java b/src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java
index 59a63155..4bb96aae 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java
@@ -92,7 +92,7 @@ final class LongArrayData extends ArrayData {
 
     @Override
     public ArrayData convert(final Class<?> type) {
-        if (type == Long.class) {
+        if (type == Integer.class || type == Long.class) {
             return this;
         }
         final int length = (int) length();
@@ -238,4 +238,32 @@ final class LongArrayData extends ArrayData {
         final long newLength = to - start;
         return new LongArrayData(Arrays.copyOfRange(array, (int)from, (int)to), (int)newLength);
     }
+
+    @Override
+    public ArrayData fastSplice(final int start, final int removed, final int added) throws UnsupportedOperationException {
+        final long oldLength = length();
+        final long newLength = oldLength - removed + added;
+        if (newLength > SparseArrayData.MAX_DENSE_LENGTH && newLength > array.length) {
+            throw new UnsupportedOperationException();
+        }
+        final ArrayData returnValue = (removed == 0) ?
+                EMPTY_ARRAY : new LongArrayData(Arrays.copyOfRange(array, start, start + removed), removed);
+
+        if (newLength != oldLength) {
+            final long[] newArray;
+
+            if (newLength > array.length) {
+                newArray = new long[ArrayData.nextSize((int)newLength)];
+                System.arraycopy(array, 0, newArray, 0, start);
+            } else {
+                newArray = array;
+            }
+
+            System.arraycopy(array, start + removed, newArray, start + added, (int)(oldLength - start - removed));
+            array = newArray;
+            setLength(newLength);
+        }
+
+        return returnValue;
+    }
 }
diff --git a/src/jdk/nashorn/internal/runtime/arrays/NumberArrayData.java b/src/jdk/nashorn/internal/runtime/arrays/NumberArrayData.java
index 2ecf9d74..8254db63 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/NumberArrayData.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/NumberArrayData.java
@@ -218,4 +218,32 @@ final class NumberArrayData extends ArrayData {
         final long newLength = to - start;
         return new NumberArrayData(Arrays.copyOfRange(array, (int)from, (int)to), (int)newLength);
     }
+
+    @Override
+    public ArrayData fastSplice(final int start, final int removed, final int added) throws UnsupportedOperationException {
+        final long oldLength = length();
+        final long newLength = oldLength - removed + added;
+        if (newLength > SparseArrayData.MAX_DENSE_LENGTH && newLength > array.length) {
+            throw new UnsupportedOperationException();
+        }
+        final ArrayData returnValue = (removed == 0) ?
+                EMPTY_ARRAY : new NumberArrayData(Arrays.copyOfRange(array, start, start + removed), removed);
+
+        if (newLength != oldLength) {
+            final double[] newArray;
+
+            if (newLength > array.length) {
+                newArray = new double[ArrayData.nextSize((int)newLength)];
+                System.arraycopy(array, 0, newArray, 0, start);
+            } else {
+                newArray = array;
+            }
+
+            System.arraycopy(array, start + removed, newArray, start + added, (int)(oldLength - start - removed));
+            array = newArray;
+            setLength(newLength);
+        }
+
+        return returnValue;
+    }
 }
diff --git a/src/jdk/nashorn/internal/runtime/arrays/ObjectArrayData.java b/src/jdk/nashorn/internal/runtime/arrays/ObjectArrayData.java
index 136e6437..a9a1b5b2 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/ObjectArrayData.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/ObjectArrayData.java
@@ -206,4 +206,32 @@ final class ObjectArrayData extends ArrayData {
         final long newLength = to - start;
         return new ObjectArrayData(Arrays.copyOfRange(array, (int)from, (int)to), (int)newLength);
     }
+
+    @Override
+    public ArrayData fastSplice(final int start, final int removed, final int added) throws UnsupportedOperationException {
+        final long oldLength = length();
+        final long newLength = oldLength - removed + added;
+        if (newLength > SparseArrayData.MAX_DENSE_LENGTH && newLength > array.length) {
+            throw new UnsupportedOperationException();
+        }
+        final ArrayData returnValue = (removed == 0) ?
+                EMPTY_ARRAY : new ObjectArrayData(Arrays.copyOfRange(array, start, start + removed), removed);
+
+        if (newLength != oldLength) {
+            final Object[] newArray;
+
+            if (newLength > array.length) {
+                newArray = new Object[ArrayData.nextSize((int)newLength)];
+                System.arraycopy(array, 0, newArray, 0, start);
+            } else {
+                newArray = array;
+            }
+
+            System.arraycopy(array, start + removed, newArray, start + added, (int)(oldLength - start - removed));
+            array = newArray;
+            setLength(newLength);
+        }
+
+        return returnValue;
+    }
 }
diff --git a/src/jdk/nashorn/internal/runtime/arrays/ReverseJavaArrayIterator.java b/src/jdk/nashorn/internal/runtime/arrays/ReverseJavaArrayIterator.java
index dcb37cfd..b90bae68 100644
--- a/src/jdk/nashorn/internal/runtime/arrays/ReverseJavaArrayIterator.java
+++ b/src/jdk/nashorn/internal/runtime/arrays/ReverseJavaArrayIterator.java
@@ -55,4 +55,4 @@ final class ReverseJavaArrayIterator extends JavaArrayIterator {
     protected long bumpIndex() {
         return index--;
     }
-}
-\ No newline at end of file
+}
diff --git a/src/jdk/nashorn/internal/runtime/linker/Bootstrap.java b/src/jdk/nashorn/internal/runtime/linker/Bootstrap.java
index f725817a..0d5f68a1 100644
--- a/src/jdk/nashorn/internal/runtime/linker/Bootstrap.java
+++ b/src/jdk/nashorn/internal/runtime/linker/Bootstrap.java
@@ -63,7 +63,7 @@ public final class Bootstrap {
         final DynamicLinkerFactory factory = new DynamicLinkerFactory();
         factory.setPrioritizedLinkers(new NashornLinker(), new NashornPrimitiveLinker(), new NashornStaticClassLinker(),
                 new BoundDynamicMethodLinker(), new JavaSuperAdapterLinker(), new JSObjectLinker(), new ReflectionCheckLinker());
-        factory.setFallbackLinkers(new BeansLinker(), new NashornBottomLinker());
+        factory.setFallbackLinkers(new NashornBeansLinker(), new NashornBottomLinker());
         factory.setSyncOnRelink(true);
         final int relinkThreshold = Options.getIntProperty("nashorn.unstable.relink.threshold", -1);
         if (relinkThreshold > -1) {
diff --git a/src/jdk/nashorn/internal/runtime/linker/BoundDynamicMethodLinker.java b/src/jdk/nashorn/internal/runtime/linker/BoundDynamicMethodLinker.java
index ccd497d7..77c1618b 100644
--- a/src/jdk/nashorn/internal/runtime/linker/BoundDynamicMethodLinker.java
+++ b/src/jdk/nashorn/internal/runtime/linker/BoundDynamicMethodLinker.java
@@ -72,7 +72,7 @@ final class BoundDynamicMethodLinker implements TypeBasedGuardingDynamicLinker {
                 type.changeParameterType(0, dynamicMethodClass).changeParameterType(1, boundThis.getClass()));
 
         // Delegate to BeansLinker
-        final GuardedInvocation inv = BeansLinker.getLinkerForClass(dynamicMethodClass).getGuardedInvocation(
+        final GuardedInvocation inv = NashornBeansLinker.getGuardedInvocation(BeansLinker.getLinkerForClass(dynamicMethodClass),
                 linkRequest.replaceArguments(newDescriptor, args), linkerServices);
         if(inv == null) {
             return null;
diff --git a/src/jdk/nashorn/internal/runtime/linker/JSObjectLinker.java b/src/jdk/nashorn/internal/runtime/linker/JSObjectLinker.java
index 45451a8b..f0d45317 100644
--- a/src/jdk/nashorn/internal/runtime/linker/JSObjectLinker.java
+++ b/src/jdk/nashorn/internal/runtime/linker/JSObjectLinker.java
@@ -25,25 +25,28 @@
 
 package jdk.nashorn.internal.runtime.linker;
 
-import jdk.nashorn.internal.lookup.MethodHandleFunctionality;
-import jdk.nashorn.internal.lookup.MethodHandleFactory;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
 import java.lang.invoke.MethodType;
+import java.util.HashMap;
+import java.util.Map;
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.linker.GuardedInvocation;
+import jdk.internal.dynalink.linker.GuardingTypeConverterFactory;
 import jdk.internal.dynalink.linker.LinkRequest;
 import jdk.internal.dynalink.linker.LinkerServices;
 import jdk.internal.dynalink.linker.TypeBasedGuardingDynamicLinker;
 import jdk.internal.dynalink.support.CallSiteDescriptorFactory;
-import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.api.scripting.JSObject;
+import jdk.nashorn.internal.lookup.MethodHandleFactory;
+import jdk.nashorn.internal.lookup.MethodHandleFunctionality;
+import jdk.nashorn.internal.runtime.JSType;
 
 /**
  * A Dynalink linker to handle web browser built-in JS (DOM etc.) objects as well
  * as ScriptObjects from other Nashorn contexts.
  */
-final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
+final class JSObjectLinker implements TypeBasedGuardingDynamicLinker, GuardingTypeConverterFactory {
     @Override
     public boolean canLinkType(final Class<?> type) {
         return canLinkTypeStatic(type);
@@ -75,6 +78,22 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
         return Bootstrap.asType(inv, linkerServices, desc);
     }
 
+    @Override
+    public GuardedInvocation convertToType(final Class<?> sourceType, final Class<?> targetType) throws Exception {
+        final boolean sourceIsAlwaysJSObject = JSObject.class.isAssignableFrom(sourceType);
+        if(!sourceIsAlwaysJSObject && !sourceType.isAssignableFrom(JSObject.class)) {
+            return null;
+        }
+
+        final MethodHandle converter = CONVERTERS.get(targetType);
+        if(converter == null) {
+            return null;
+        }
+
+        return new GuardedInvocation(converter, sourceIsAlwaysJSObject ? null : IS_JSOBJECT_GUARD).asType(MethodType.methodType(targetType, sourceType));
+    }
+
+
     private static GuardedInvocation lookup(final CallSiteDescriptor desc) {
         final String operator = CallSiteDescriptorFactory.tokenizeOperators(desc).get(0);
         final int c = desc.getNameTokenCount();
@@ -87,9 +106,7 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
             case "setElem":
                 return c > 2 ? findSetMethod(desc) : findSetIndexMethod();
             case "call":
-                return findCallMethod(desc, operator);
-            case "callMethod":
-                return findCallMethodMethod(desc, operator);
+                return findCallMethod(desc);
             case "new":
                 return findNewMethod(desc);
             default:
@@ -115,14 +132,7 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
         return new GuardedInvocation(JSOBJECTLINKER_PUT, null, IS_JSOBJECT_GUARD);
     }
 
-    private static GuardedInvocation findCallMethodMethod(final CallSiteDescriptor desc, final String operator) {
-        final String methodName = desc.getNameToken(2);
-        MethodHandle func = MH.insertArguments(JSOBJECT_CALLMEMBER, 1, methodName);
-        func = MH.asCollector(func, Object[].class, desc.getMethodType().parameterCount() - 1);
-        return new GuardedInvocation(func, null, IS_JSOBJECT_GUARD);
-    }
-
-    private static GuardedInvocation findCallMethod(final CallSiteDescriptor desc, final String operator) {
+    private static GuardedInvocation findCallMethod(final CallSiteDescriptor desc) {
         final MethodHandle func = MH.asCollector(JSOBJECT_CALL, Object[].class, desc.getMethodType().parameterCount() - 2);
         return new GuardedInvocation(func, null, IS_JSOBJECT_GUARD);
     }
@@ -140,7 +150,7 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
     @SuppressWarnings("unused")
     private static Object get(final Object jsobj, final Object key) {
         if (key instanceof Integer) {
-            return ((JSObject)jsobj).getSlot((int)(Integer)key);
+            return ((JSObject)jsobj).getSlot((Integer)key);
         } else if (key instanceof Number) {
             final int index = getIndex((Number)key);
             if (index > -1) {
@@ -155,7 +165,7 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
     @SuppressWarnings("unused")
     private static void put(final Object jsobj, final Object key, final Object value) {
         if (key instanceof Integer) {
-            ((JSObject)jsobj).setSlot((int)(Integer)key, value);
+            ((JSObject)jsobj).setSlot((Integer)key, value);
         } else if (key instanceof Number) {
             ((JSObject)jsobj).setSlot(getIndex((Number)key), value);
         } else if (key instanceof String) {
@@ -163,6 +173,25 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
         }
     }
 
+    @SuppressWarnings("unused")
+    private static int toInt32(final JSObject obj) {
+        return JSType.toInt32(toNumber(obj));
+    }
+
+    @SuppressWarnings("unused")
+    private static long toInt64(final JSObject obj) {
+        return JSType.toInt64(toNumber(obj));
+    }
+
+    private static double toNumber(final JSObject obj) {
+        return obj == null ? 0 : obj.toNumber();
+    }
+
+    @SuppressWarnings("unused")
+    private static boolean toBoolean(final JSObject obj) {
+        return obj != null;
+    }
+
     private static int getIndex(final Number n) {
         final double value = n.doubleValue();
         return JSType.isRepresentableAsInt(value) ? (int)value : -1;
@@ -178,27 +207,31 @@ final class JSObjectLinker implements TypeBasedGuardingDynamicLinker {
     // method handles of JSObject class
     private static final MethodHandle JSOBJECT_GETMEMBER  = findJSObjectMH("getMember", Object.class, String.class);
     private static final MethodHandle JSOBJECT_SETMEMBER  = findJSObjectMH("setMember", Void.TYPE, String.class, Object.class);
-    private static final MethodHandle JSOBJECT_CALLMEMBER = findJSObjectMH("callMember", Object.class, String.class, Object[].class);
     private static final MethodHandle JSOBJECT_CALL       = findJSObjectMH("call", Object.class, Object.class, Object[].class);
     private static final MethodHandle JSOBJECT_NEW        = findJSObjectMH("newObject", Object.class, Object[].class);
 
+    private static final Map<Class<?>, MethodHandle> CONVERTERS = new HashMap<>();
+    static {
+        CONVERTERS.put(boolean.class, findOwnMH("toBoolean", boolean.class, JSObject.class));
+        CONVERTERS.put(int.class, findOwnMH("toInt32", int.class, JSObject.class));
+        CONVERTERS.put(long.class, findOwnMH("toInt64", long.class, JSObject.class));
+        CONVERTERS.put(double.class, findOwnMH("toNumber", double.class, JSObject.class));
+    }
+
     private static MethodHandle findOwnMH(final String name, final Class<?> rtype, final Class<?>... types) {
-        final Class<?>   own = JSObjectLinker.class;
-        final MethodType mt  = MH.type(rtype, types);
-        try {
-            return MH.findStatic(MethodHandles.lookup(), own, name, mt);
-        } catch (final MethodHandleFactory.LookupException e) {
-            return MH.findVirtual(MethodHandles.lookup(), own, name, mt);
-        }
+        return findMH(name, JSObjectLinker.class, rtype, types);
     }
 
     private static MethodHandle findJSObjectMH(final String name, final Class<?> rtype, final Class<?>... types) {
-        final Class<?>   own = JSObject.class;
+        return findMH(name, JSObject.class, rtype, types);
+    }
+
+    private static MethodHandle findMH(final String name, final Class<?> target, final Class<?> rtype, final Class<?>... types) {
         final MethodType mt  = MH.type(rtype, types);
         try {
-            return MH.findVirtual(MethodHandles.publicLookup(), own, name, mt);
+            return MH.findStatic(MethodHandles.lookup(), target, name, mt);
         } catch (final MethodHandleFactory.LookupException e) {
-            return MH.findVirtual(MethodHandles.lookup(), own, name, mt);
+            return MH.findVirtual(MethodHandles.lookup(), target, name, mt);
         }
     }
 }
diff --git a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java
index 8ebdc810..5b8d4cfe 100644
--- a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java
+++ b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java
@@ -93,7 +93,7 @@ import sun.reflect.CallerSensitive;
  * its last argument preceded by original constructor arguments. This constructor will use the passed function as the
  * implementation for all abstract methods. For consistency, any concrete methods sharing the single abstract method
  * name will also be overridden by the function. When methods on the adapter instance are invoked, the ScriptFunction is
- * invoked with {@code null} as its "this".
+ * invoked with global or UNDEFINED as its "this" depending whether the function is non-strict or not.
  * </li>
  * <li>
  * If the adapter being generated can have class-level overrides, constructors taking same arguments as the superclass
diff --git a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterFactory.java b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterFactory.java
index 5130f3d6..b221d000 100644
--- a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterFactory.java
+++ b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterFactory.java
@@ -109,7 +109,7 @@ public final class JavaAdapterFactory {
         if (sm != null) {
             for (Class<?> type : types) {
                 // check for restricted package access
-                Context.checkPackageAccess(type.getName());
+                Context.checkPackageAccess(type);
             }
         }
         return getAdapterInfo(types).getAdapterClassFor(classOverrides);
diff --git a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterServices.java b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterServices.java
index 6614304f..06ae1b11 100644
--- a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterServices.java
+++ b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterServices.java
@@ -29,6 +29,7 @@ import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodType;
+import jdk.nashorn.internal.runtime.Context;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
@@ -53,8 +54,8 @@ public final class JavaAdapterServices {
      * @return the appropriately adapted method handle for invoking the script function.
      */
     public static MethodHandle getHandle(final ScriptFunction fn, final MethodType type) {
-        // JS "this" will be null for SAMs
-        return adaptHandle(fn.getBoundInvokeHandle(null), type);
+        // JS "this" will be global object or undefined depending on if 'fn' is strict or not
+        return adaptHandle(fn.getBoundInvokeHandle(fn.isStrict()? ScriptRuntime.UNDEFINED : Context.getGlobal()), type);
     }
 
     /**
diff --git a/src/jdk/nashorn/internal/runtime/linker/JavaArgumentConverters.java b/src/jdk/nashorn/internal/runtime/linker/JavaArgumentConverters.java
index f035071b..984d0f41 100644
--- a/src/jdk/nashorn/internal/runtime/linker/JavaArgumentConverters.java
+++ b/src/jdk/nashorn/internal/runtime/linker/JavaArgumentConverters.java
@@ -25,9 +25,9 @@
 
 package jdk.nashorn.internal.runtime.linker;
 
+import static jdk.nashorn.internal.lookup.Lookup.MH;
 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
-import static jdk.nashorn.internal.lookup.Lookup.MH;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -211,6 +211,20 @@ final class JavaArgumentConverters {
                 return null;
             } else if (obj instanceof Long) {
                 return (Long) obj;
+            } else if (obj instanceof Integer) {
+                return ((Integer)obj).longValue();
+            } else if (obj instanceof Double) {
+                final Double d = (Double)obj;
+                if(Double.isInfinite(d.doubleValue())) {
+                    return 0L;
+                }
+                return d.longValue();
+            } else if (obj instanceof Float) {
+                final Float f = (Float)obj;
+                if(Float.isInfinite(f.floatValue())) {
+                    return 0L;
+                }
+                return f.longValue();
             } else if (obj instanceof Number) {
                 return ((Number)obj).longValue();
             } else if (obj instanceof String || obj instanceof ConsString) {
diff --git a/src/jdk/nashorn/internal/runtime/linker/JavaSuperAdapterLinker.java b/src/jdk/nashorn/internal/runtime/linker/JavaSuperAdapterLinker.java
index 8e40805a..c42af1d8 100644
--- a/src/jdk/nashorn/internal/runtime/linker/JavaSuperAdapterLinker.java
+++ b/src/jdk/nashorn/internal/runtime/linker/JavaSuperAdapterLinker.java
@@ -100,8 +100,9 @@ final class JavaSuperAdapterLinker implements TypeBasedGuardingDynamicLinker {
                 type.changeParameterType(0, adapterClass), 0);
 
         // Delegate to BeansLinker
-        final GuardedInvocation guardedInv = BeansLinker.getLinkerForClass(adapterClass).getGuardedInvocation(
-                linkRequest.replaceArguments(newDescriptor, args), linkerServices);
+        final GuardedInvocation guardedInv = NashornBeansLinker.getGuardedInvocation(
+                BeansLinker.getLinkerForClass(adapterClass), linkRequest.replaceArguments(newDescriptor, args),
+                linkerServices);
 
         final MethodHandle guard = IS_ADAPTER_OF_CLASS.bindTo(adapterClass);
         if(guardedInv == null) {
diff --git a/src/jdk/nashorn/internal/runtime/linker/NashornBeansLinker.java b/src/jdk/nashorn/internal/runtime/linker/NashornBeansLinker.java
new file mode 100644
index 00000000..e2db2b11
--- /dev/null
+++ b/src/jdk/nashorn/internal/runtime/linker/NashornBeansLinker.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.nashorn.internal.runtime.linker;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import jdk.internal.dynalink.beans.BeansLinker;
+import jdk.internal.dynalink.linker.ConversionComparator.Comparison;
+import jdk.internal.dynalink.linker.GuardedInvocation;
+import jdk.internal.dynalink.linker.GuardingDynamicLinker;
+import jdk.internal.dynalink.linker.LinkRequest;
+import jdk.internal.dynalink.linker.LinkerServices;
+import jdk.internal.dynalink.support.Lookup;
+import jdk.nashorn.internal.runtime.ConsString;
+
+/**
+ * This linker delegates to a {@code BeansLinker} but passes it a special linker services object that has a modified
+ * {@code asType} method that will ensure that we never pass internal engine objects that should not be externally
+ * observable (currently only ConsString) to Java APIs, but rather that we flatten it into a String. We can't just add
+ * this functionality as custom converters via {@code GuaardingTypeConverterFactory}, since they are not consulted when
+ * the target method handle parameter signature is {@code Object}.
+ */
+public class NashornBeansLinker implements GuardingDynamicLinker {
+    private static final MethodHandle EXPORT_ARGUMENT = new Lookup(MethodHandles.lookup()).findOwnStatic("exportArgument", Object.class, Object.class);
+
+    private final BeansLinker beansLinker = new BeansLinker();
+
+    @Override
+    public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) throws Exception {
+        return getGuardedInvocation(beansLinker, linkRequest, linkerServices);
+    }
+
+    /**
+     * Delegates to the specified linker but injects its linker services wrapper so that it will apply all special
+     * conversions that this class does.
+     * @param delegateLinker the linker to which the actual work is delegated to.
+     * @param linkRequest the delegated link request
+     * @param linkerServices the original link services that will be augmented with special conversions
+     * @return the guarded invocation from the delegate, possibly augmented with special conversions
+     * @throws Exception if the delegate throws an exception
+     */
+    public static GuardedInvocation getGuardedInvocation(final GuardingDynamicLinker delegateLinker, final LinkRequest linkRequest, final LinkerServices linkerServices) throws Exception {
+        return delegateLinker.getGuardedInvocation(linkRequest, new NashornBeansLinkerServices(linkerServices));
+    }
+
+    @SuppressWarnings("unused")
+    private static Object exportArgument(final Object arg) {
+        return arg instanceof ConsString ? arg.toString() : arg;
+    }
+
+    private static class NashornBeansLinkerServices implements LinkerServices {
+        private final LinkerServices linkerServices;
+
+        NashornBeansLinkerServices(final LinkerServices linkerServices) {
+            this.linkerServices = linkerServices;
+        }
+
+        @Override
+        public MethodHandle asType(final MethodHandle handle, final MethodType fromType) {
+            final MethodHandle typed = linkerServices.asType(handle, fromType);
+
+            final MethodType handleType = handle.type();
+            final int paramCount = handleType.parameterCount();
+            assert fromType.parameterCount() == handleType.parameterCount();
+
+            MethodHandle[] filters = null;
+            for(int i = 0; i < paramCount; ++i) {
+                if(shouldConvert(handleType.parameterType(i), fromType.parameterType(i))) {
+                    if(filters == null) {
+                        filters = new MethodHandle[paramCount];
+                    }
+                    filters[i] = EXPORT_ARGUMENT;
+                }
+            }
+
+            return filters != null ? MethodHandles.filterArguments(typed, 0, filters) : typed;
+        }
+
+        private static boolean shouldConvert(final Class<?> handleType, final Class<?> fromType) {
+            return handleType == Object.class && fromType == Object.class;
+        }
+
+        @Override
+        public MethodHandle getTypeConverter(final Class<?> sourceType, final Class<?> targetType) {
+            return linkerServices.getTypeConverter(sourceType, targetType);
+        }
+
+        @Override
+        public boolean canConvert(final Class<?> from, final Class<?> to) {
+            return linkerServices.canConvert(from, to);
+        }
+
+        @Override
+        public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest) throws Exception {
+            return linkerServices.getGuardedInvocation(linkRequest);
+        }
+
+        @Override
+        public Comparison compareConversion(final Class<?> sourceType, final Class<?> targetType1, final Class<?> targetType2) {
+            return linkerServices.compareConversion(sourceType, targetType1, targetType2);
+        }
+    }
+}
diff --git a/src/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java b/src/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java
index 6dbcbdd3..c94df15b 100644
--- a/src/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java
+++ b/src/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java
@@ -33,14 +33,18 @@ import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodType;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
+import java.util.Map;
+import java.util.HashMap;
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.beans.BeansLinker;
 import jdk.internal.dynalink.linker.GuardedInvocation;
 import jdk.internal.dynalink.linker.GuardingDynamicLinker;
+import jdk.internal.dynalink.linker.GuardingTypeConverterFactory;
 import jdk.internal.dynalink.linker.LinkRequest;
 import jdk.internal.dynalink.linker.LinkerServices;
 import jdk.internal.dynalink.support.Guards;
 import jdk.nashorn.internal.runtime.Context;
+import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 
 /**
@@ -50,7 +54,7 @@ import jdk.nashorn.internal.runtime.ScriptRuntime;
  * setters for Java objects that couldn't be linked by any other linker, and throw appropriate ECMAScript errors for
  * attempts to invoke arbitrary Java objects as functions or constructors.
  */
-final class NashornBottomLinker implements GuardingDynamicLinker {
+final class NashornBottomLinker implements GuardingDynamicLinker, GuardingTypeConverterFactory {
 
     @Override
     public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices)
@@ -129,6 +133,29 @@ final class NashornBottomLinker implements GuardingDynamicLinker {
         throw new AssertionError("unknown call type " + desc);
     }
 
+    @Override
+    public GuardedInvocation convertToType(final Class<?> sourceType, final Class<?> targetType) throws Exception {
+        final GuardedInvocation gi = convertToTypeNoCast(sourceType, targetType);
+        return gi == null ? null : gi.asType(MH.type(targetType, sourceType));
+    }
+
+    /**
+     * Main part of the implementation of {@link GuardingTypeConverterFactory#convertToType(Class, Class)} that doesn't
+     * care about adapting the method signature; that's done by the invoking method. Returns conversion from Object to String/number/boolean (JS primitive types).
+     * @param sourceType the source type
+     * @param targetType the target type
+     * @return a guarded invocation that converts from the source type to the target type.
+     * @throws Exception if something goes wrong
+     */
+    private static GuardedInvocation convertToTypeNoCast(final Class<?> sourceType, final Class<?> targetType) throws Exception {
+        final MethodHandle mh = CONVERTERS.get(targetType);
+        if (mh != null) {
+            return new GuardedInvocation(mh, null);
+        }
+
+        return null;
+    }
+
     private static GuardedInvocation getInvocation(final MethodHandle handle, final Object self, final LinkerServices linkerServices, final CallSiteDescriptor desc) {
         return Bootstrap.asType(new GuardedInvocation(handle, Guards.getClassGuard(self.getClass())), linkerServices, desc);
     }
@@ -161,6 +188,15 @@ final class NashornBottomLinker implements GuardingDynamicLinker {
         throw new AssertionError("unknown call type " + desc);
     }
 
+    private static final Map<Class<?>, MethodHandle> CONVERTERS = new HashMap<>();
+    static {
+        CONVERTERS.put(boolean.class, JSType.TO_BOOLEAN.methodHandle());
+        CONVERTERS.put(double.class, JSType.TO_NUMBER.methodHandle());
+        CONVERTERS.put(int.class, JSType.TO_INTEGER.methodHandle());
+        CONVERTERS.put(long.class, JSType.TO_LONG.methodHandle());
+        CONVERTERS.put(String.class, JSType.TO_STRING.methodHandle());
+    }
+
     private static String getArgument(final LinkRequest linkRequest) {
         final CallSiteDescriptor desc = linkRequest.getCallSiteDescriptor();
         if (desc.getNameTokenCount() > 2) {
diff --git a/src/jdk/nashorn/internal/runtime/linker/NashornLinker.java b/src/jdk/nashorn/internal/runtime/linker/NashornLinker.java
index 3a23b141..27e4573f 100644
--- a/src/jdk/nashorn/internal/runtime/linker/NashornLinker.java
+++ b/src/jdk/nashorn/internal/runtime/linker/NashornLinker.java
@@ -30,6 +30,10 @@ import static jdk.nashorn.internal.lookup.Lookup.MH;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
 import java.lang.reflect.Modifier;
+import java.util.Deque;
+import java.util.List;
+import java.util.Map;
+import javax.script.Bindings;
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.linker.ConversionComparator;
 import jdk.internal.dynalink.linker.GuardedInvocation;
@@ -38,6 +42,12 @@ import jdk.internal.dynalink.linker.LinkRequest;
 import jdk.internal.dynalink.linker.LinkerServices;
 import jdk.internal.dynalink.linker.TypeBasedGuardingDynamicLinker;
 import jdk.internal.dynalink.support.Guards;
+import jdk.nashorn.api.scripting.JSObject;
+import jdk.nashorn.api.scripting.ScriptObjectMirror;
+import jdk.nashorn.api.scripting.ScriptUtils;
+import jdk.nashorn.internal.objects.NativeArray;
+import jdk.nashorn.internal.runtime.Context;
+import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.Undefined;
@@ -47,6 +57,13 @@ import jdk.nashorn.internal.runtime.Undefined;
  * includes {@link ScriptFunction} and its subclasses) as well as {@link Undefined}.
  */
 final class NashornLinker implements TypeBasedGuardingDynamicLinker, GuardingTypeConverterFactory, ConversionComparator {
+    private static final ClassValue<MethodHandle> ARRAY_CONVERTERS = new ClassValue<MethodHandle>() {
+        @Override
+        protected MethodHandle computeValue(Class<?> type) {
+            return createArrayConverter(type);
+        }
+    };
+
     /**
      * Returns true if {@code ScriptObject} is assignable from {@code type}, or it is {@code Undefined}.
      */
@@ -103,6 +120,17 @@ final class NashornLinker implements TypeBasedGuardingDynamicLinker, GuardingTyp
         if (mh != null) {
             return new GuardedInvocation(mh, canLinkTypeStatic(sourceType) ? null : IS_NASHORN_OR_UNDEFINED_TYPE);
         }
+
+        final GuardedInvocation arrayConverter = getArrayConverter(sourceType, targetType);
+        if(arrayConverter != null) {
+            return arrayConverter;
+        }
+
+        final GuardedInvocation mirrorConverter = getMirrorConverter(sourceType, targetType);
+        if(mirrorConverter != null) {
+            return mirrorConverter;
+        }
+
         return getSamTypeConverter(sourceType, targetType);
     }
 
@@ -129,6 +157,53 @@ final class NashornLinker implements TypeBasedGuardingDynamicLinker, GuardingTyp
         return null;
     }
 
+    /**
+     * Returns a guarded invocation that converts from a source type that is NativeArray to a Java array or List or
+     * Deque type.
+     * @param sourceType the source type (presumably NativeArray a superclass of it)
+     * @param targetType the target type (presumably an array type, or List or Deque)
+     * @return a guarded invocation that converts from the source type to the target type. null is returned if
+     * either the source type is neither NativeArray, nor a superclass of it, or if the target type is not an array
+     * type, List, or Deque.
+     */
+    private static GuardedInvocation getArrayConverter(final Class<?> sourceType, final Class<?> targetType) {
+        final boolean isSourceTypeNativeArray = sourceType == NativeArray.class;
+        // If source type is more generic than ScriptFunction class, we'll need to use a guard
+        final boolean isSourceTypeGeneric = !isSourceTypeNativeArray && sourceType.isAssignableFrom(NativeArray.class);
+
+        if (isSourceTypeNativeArray || isSourceTypeGeneric) {
+            final MethodHandle guard = isSourceTypeGeneric ? IS_NATIVE_ARRAY : null;
+            if(targetType.isArray()) {
+                return new GuardedInvocation(ARRAY_CONVERTERS.get(targetType), guard);
+            }
+            if(targetType == List.class) {
+                return new GuardedInvocation(JSType.TO_JAVA_LIST.methodHandle(), guard);
+            }
+            if(targetType == Deque.class) {
+                return new GuardedInvocation(JSType.TO_JAVA_DEQUE.methodHandle(), guard);
+            }
+        }
+        return null;
+    }
+
+    private static MethodHandle createArrayConverter(final Class<?> type) {
+        assert type.isArray();
+        final MethodHandle converter = MH.insertArguments(JSType.TO_JAVA_ARRAY.methodHandle(), 1, type.getComponentType());
+        return MH.asType(converter, converter.type().changeReturnType(type));
+    }
+
+    private static GuardedInvocation getMirrorConverter(Class<?> sourceType, Class<?> targetType) {
+        // Could've also used (targetType.isAssignableFrom(ScriptObjectMirror.class) && targetType != Object.class) but
+        // it's probably better to explicitly spell out the supported target types
+        if (targetType == Map.class || targetType == Bindings.class || targetType == JSObject.class || targetType == ScriptObjectMirror.class) {
+            if(ScriptObject.class.isAssignableFrom(sourceType)) {
+                return new GuardedInvocation(CREATE_MIRROR, null);
+            }
+            return new GuardedInvocation(CREATE_MIRROR, IS_SCRIPT_OBJECT);
+        }
+        return null;
+    }
+
     private static boolean isAutoConvertibleFromFunction(final Class<?> clazz) {
         return isAbstractClass(clazz) && !ScriptObject.class.isAssignableFrom(clazz) &&
                 JavaAdapterFactory.isAutoConvertibleFromFunction(clazz);
@@ -148,7 +223,26 @@ final class NashornLinker implements TypeBasedGuardingDynamicLinker, GuardingTyp
 
     @Override
     public Comparison compareConversion(final Class<?> sourceType, final Class<?> targetType1, final Class<?> targetType2) {
+        if(sourceType == NativeArray.class) {
+            // Prefer lists, as they're less costly to create than arrays.
+            if(isList(targetType1)) {
+                if(!isList(targetType2)) {
+                    return Comparison.TYPE_1_BETTER;
+                }
+            } else if(isList(targetType2)) {
+                return Comparison.TYPE_2_BETTER;
+            }
+            // Then prefer arrays
+            if(targetType1.isArray()) {
+                if(!targetType2.isArray()) {
+                    return Comparison.TYPE_1_BETTER;
+                }
+            } else if(targetType2.isArray()) {
+                return Comparison.TYPE_2_BETTER;
+            }
+        }
         if(ScriptObject.class.isAssignableFrom(sourceType)) {
+            // Prefer interfaces
             if(targetType1.isInterface()) {
                 if(!targetType2.isInterface()) {
                     return Comparison.TYPE_1_BETTER;
@@ -160,16 +254,27 @@ final class NashornLinker implements TypeBasedGuardingDynamicLinker, GuardingTyp
         return Comparison.INDETERMINATE;
     }
 
+    private static boolean isList(Class<?> clazz) {
+        return clazz == List.class || clazz == Deque.class;
+    }
+
+    private static final MethodHandle IS_SCRIPT_OBJECT = Guards.isInstance(ScriptObject.class, MH.type(Boolean.TYPE, Object.class));
     private static final MethodHandle IS_SCRIPT_FUNCTION = Guards.isInstance(ScriptFunction.class, MH.type(Boolean.TYPE, Object.class));
+    private static final MethodHandle IS_NATIVE_ARRAY = Guards.isOfClass(NativeArray.class, MH.type(Boolean.TYPE, Object.class));
 
-    private static final MethodHandle IS_NASHORN_OR_UNDEFINED_TYPE = findOwnMH("isNashornTypeOrUndefined",
-            Boolean.TYPE, Object.class);
+    private static final MethodHandle IS_NASHORN_OR_UNDEFINED_TYPE = findOwnMH("isNashornTypeOrUndefined", Boolean.TYPE, Object.class);
+    private static final MethodHandle CREATE_MIRROR = findOwnMH("createMirror", Object.class, Object.class);
 
     @SuppressWarnings("unused")
     private static boolean isNashornTypeOrUndefined(final Object obj) {
         return obj instanceof ScriptObject || obj instanceof Undefined;
     }
 
+    @SuppressWarnings("unused")
+    private static Object createMirror(final Object obj) {
+        return ScriptUtils.wrap(obj);
+    }
+
     private static MethodHandle findOwnMH(final String name, final Class<?> rtype, final Class<?>... types) {
         return MH.findStatic(MethodHandles.lookup(), NashornLinker.class, name, MH.type(rtype, types));
     }
diff --git a/src/jdk/nashorn/internal/runtime/linker/NashornStaticClassLinker.java b/src/jdk/nashorn/internal/runtime/linker/NashornStaticClassLinker.java
index 9c9f5283..72ed9766 100644
--- a/src/jdk/nashorn/internal/runtime/linker/NashornStaticClassLinker.java
+++ b/src/jdk/nashorn/internal/runtime/linker/NashornStaticClassLinker.java
@@ -70,7 +70,7 @@ final class NashornStaticClassLinker implements TypeBasedGuardingDynamicLinker {
         // We intercept "new" on StaticClass instances to provide additional capabilities
         if ("new".equals(desc.getNameToken(CallSiteDescriptor.OPERATOR))) {
             // make sure new is on accessible Class
-            Context.checkPackageAccess(receiverClass.getName());
+            Context.checkPackageAccess(receiverClass);
 
             // Is the class abstract? (This includes interfaces.)
             if (NashornLinker.isAbstractClass(receiverClass)) {
@@ -93,7 +93,7 @@ final class NashornStaticClassLinker implements TypeBasedGuardingDynamicLinker {
     }
 
     private static GuardedInvocation delegate(LinkerServices linkerServices, final LinkRequest request) throws Exception {
-        return staticClassLinker.getGuardedInvocation(request, linkerServices);
+        return NashornBeansLinker.getGuardedInvocation(staticClassLinker, request, linkerServices);
     }
 
     private static GuardedInvocation checkNullConstructor(final GuardedInvocation ctorInvocation, final Class<?> receiverClass) {
diff --git a/src/jdk/nashorn/internal/runtime/resources/fx/base.js b/src/jdk/nashorn/internal/runtime/resources/fx/base.js
index b0bfc3fb..382eabb2 100644
--- a/src/jdk/nashorn/internal/runtime/resources/fx/base.js
+++ b/src/jdk/nashorn/internal/runtime/resources/fx/base.js
@@ -33,7 +33,6 @@ var JFX_SWING_CLASSES    = [];
 var JFX_SWT_CLASSES      = [];
 
 function LOAD_FX_CLASSES(clsList) {
-
     for each (var cls in clsList) {
         // Ex. Stage = Java.type("javafx.stage.Stage");
         this[cls[cls.length - 1]] = Java.type(cls.join("."));
@@ -146,3 +145,5 @@ function LOAD_FX_CLASSES(clsList) {
         }
     }
 })();
+
+LOAD_FX_CLASSES(JFX_BASE_CLASSES);
diff --git a/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js b/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js
index 6b934ad4..85e2161c 100644
--- a/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js
+++ b/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js
@@ -41,7 +41,12 @@ Object.defineProperty(this, "JavaAdapter", {
     }
 });
 
+
 // importPackage
+// avoid unnecessary chaining of __noSuchProperty__ again
+// in case user loads this script more than once.
+if (typeof importPackage == 'undefined') {
+
 Object.defineProperty(this, "importPackage", {
     configurable: true, enumerable: false, writable: true,
     value: (function() {
@@ -91,6 +96,19 @@ Object.defineProperty(this, "importPackage", {
     })()
 });
 
+}
+
+// sync
+Object.defineProperty(this, "sync", {
+    configurable: true, enumerable: false, writable: true,
+    value: function(func, syncobj) {
+        if (arguments.length < 1 || arguments.length > 2 ) {
+            throw "sync(function [,object]) parameter count mismatch";
+        }
+        return Packages.jdk.nashorn.api.scripting.ScriptUtils.makeSynchronizedFunction(func, syncobj);
+    }
+});
+
 // Object.prototype.__defineGetter__
 Object.defineProperty(Object.prototype, "__defineGetter__", {
     configurable: true, enumerable: false, writable: true,
@@ -344,13 +362,16 @@ Object.defineProperty(String.prototype, "sup", {
 // Rhino: global.importClass
 Object.defineProperty(this, "importClass", {
     configurable: true, enumerable: false, writable: true,
-    value: function(clazz) {
-        if (Java.isType(clazz)) {
-            var className = Java.typeName(clazz);
-            var simpleName = className.substring(className.lastIndexOf('.') + 1);
-            this[simpleName] = clazz;
-        } else {
-            throw new TypeError(clazz + " is not a Java class");
+    value: function() {
+        for (var arg in arguments) {
+            var clazz = arguments[arg];
+            if (Java.isType(clazz)) {
+                var className = Java.typeName(clazz);
+                var simpleName = className.substring(className.lastIndexOf('.') + 1);
+                this[simpleName] = clazz;
+            } else {
+                throw new TypeError(clazz + " is not a Java class");
+            }
         }
     }
 });
diff --git a/src/overview.html b/src/overview.html
index 5418854f..e242a5b9 100644
--- a/src/overview.html
+++ b/src/overview.html
@@ -108,6 +108,6 @@ identity and doesn't carry i.e. static members. Again, see the link for {@code N
 <h2>Other non-standard built-in objects</h2>
 In addition to {@code Java}, Nashorn also exposes some other non-standard built-in objects:
 <a href="jdk/nashorn/internal/objects/NativeJSAdapter.html">{@code JSAdapter}</a>,
-<a href="jdk/nashorn/internal/objects/NativeJavaImporter.html">{@code JavaImporter},
+<a href="jdk/nashorn/internal/objects/NativeJavaImporter.html">{@code JavaImporter}</a>,
 <a href="jdk/nashorn/internal/runtime/NativeJavaPackage.html">{@code Packages}.</a>
 </body>
diff --git a/test/examples/array-micro.js b/test/examples/array-micro.js
index 075e78d8..9bb898f6 100644
--- a/test/examples/array-micro.js
+++ b/test/examples/array-micro.js
@@ -90,6 +90,24 @@ bench("set", function() {
     array[6] = 6;
 });
 
+bench("push", function() {
+    var arr = [1, 2, 3];
+    arr.push(4);
+    arr.push(5);
+    arr.push(6);
+});
+
+bench("pop", function() {
+    var arr = [1, 2, 3];
+    arr.pop();
+    arr.pop();
+    arr.pop();
+});
+
+bench("splice", function() {
+    [1, 2, 3].splice(0, 2, 5, 6, 7);
+});
+
 var all = function(e) { return true; };
 var none = function(e) { return false; };
 
diff --git a/test/script/assert.js b/test/script/assert.js
index 25bc2599..3656f86c 100644
--- a/test/script/assert.js
+++ b/test/script/assert.js
@@ -61,3 +61,22 @@ Object.defineProperty(this, "fail", {
         }
     }
 });
+
+Object.defineProperty(this, "printError", {
+    configuable: true,
+    enumerable: false,
+    writable: true,
+    value: function (e) {
+        var msg = e.message;
+        var str = e.name + ':';
+        if (e.lineNumber > 0) {
+            str += e.lineNumber + ':';
+        }
+        if (e.columnNumber > 0) {
+            str += e.columnNumber + ':';
+        }
+        str += msg.substring(msg.indexOf(' ') + 1);
+        print(str);
+    }
+});
+
diff --git a/test/script/basic/JDK-8015355.js b/test/script/basic/JDK-8015355.js
index bc39d8d9..aa1a39de 100644
--- a/test/script/basic/JDK-8015355.js
+++ b/test/script/basic/JDK-8015355.js
@@ -28,10 +28,6 @@
  * @run
  */
 
-function fail(msg) {
-    print(msg);
-}
-
 function check(callback) {
     try {
         callback();
diff --git a/test/script/basic/JDK-8019508.js b/test/script/basic/JDK-8019508.js
index d23035c6..88ecbec3 100644
--- a/test/script/basic/JDK-8019508.js
+++ b/test/script/basic/JDK-8019508.js
@@ -36,7 +36,7 @@ function checkObjLiteral(str) {
         if (! (e instanceof SyntaxError)) {
             fail("expected SyntaxError, got " + e);
         }
-        print(e.message.replace(/\\/g, '/'));
+        printError(e);
     }
 }
 
diff --git a/test/script/basic/JDK-8019508.js.EXPECTED b/test/script/basic/JDK-8019508.js.EXPECTED
index d5f81409..a3d883f0 100644
--- a/test/script/basic/JDK-8019508.js.EXPECTED
+++ b/test/script/basic/JDK-8019508.js.EXPECTED
@@ -1,12 +1,12 @@
-test/script/basic/JDK-8019508.js#33<eval>:1:2 Expected property id but found ,
+SyntaxError:33:Expected property id but found ,
 ({,})
   ^
-test/script/basic/JDK-8019508.js#33<eval>:1:2 Expected property id but found ,
+SyntaxError:33:Expected property id but found ,
 ({, a:2 })
   ^
-test/script/basic/JDK-8019508.js#33<eval>:1:6 Expected property id but found ,
+SyntaxError:33:Expected property id but found ,
 ({a:3,,})
       ^
-test/script/basic/JDK-8019508.js#33<eval>:1:6 Expected comma but found ident
+SyntaxError:33:Expected comma but found ident
 ({a:3 b:2}
       ^
diff --git a/test/script/basic/JDK-8019553.js b/test/script/basic/JDK-8019553.js
index d7546187..bec3a528 100644
--- a/test/script/basic/JDK-8019553.js
+++ b/test/script/basic/JDK-8019553.js
@@ -33,7 +33,7 @@ function check(str) {
         eval(str);
         fail("SyntaxError expected for: " + str);
     } catch (e) {
-        print(e.toString().replace(/\\/g, '/'));
+        printError(e);
     }
 }
 
diff --git a/test/script/basic/JDK-8019553.js.EXPECTED b/test/script/basic/JDK-8019553.js.EXPECTED
index 78d22bea..38e52866 100644
--- a/test/script/basic/JDK-8019553.js.EXPECTED
+++ b/test/script/basic/JDK-8019553.js.EXPECTED
@@ -1,12 +1,12 @@
-SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found +
+SyntaxError:33:Expected l-value but found +
 ++ +3
    ^
-SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found -
+SyntaxError:33:Expected l-value but found -
 ++ -7
    ^
-SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found +
+SyntaxError:33:Expected l-value but found +
 -- +2
    ^
-SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found -
+SyntaxError:33:Expected l-value but found -
 -- -8
    ^
diff --git a/test/script/basic/JDK-8019791.js b/test/script/basic/JDK-8019791.js
index 75e92819..ad32ce3c 100644
--- a/test/script/basic/JDK-8019791.js
+++ b/test/script/basic/JDK-8019791.js
@@ -33,7 +33,7 @@ try {
     eval('"" ~ ""');
     print("FAILED: SyntaxError expected for: \"\" ~ \"\"");
 } catch (e) {
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
 
 // Used to crash instead of SyntaxError
@@ -41,7 +41,7 @@ try {
     eval("function() { if (1~0) return 0; return 1 }");
     print("FAILED: SyntaxError expected for: if (1~0) ");
 } catch (e) {
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
 
 // The following are valid, but used to crash
diff --git a/test/script/basic/JDK-8019791.js.EXPECTED b/test/script/basic/JDK-8019791.js.EXPECTED
index 5aec5909..b214b2c6 100644
--- a/test/script/basic/JDK-8019791.js.EXPECTED
+++ b/test/script/basic/JDK-8019791.js.EXPECTED
@@ -1,6 +1,6 @@
-SyntaxError: test/script/basic/JDK-8019791.js#33<eval>:1:3 Expected ; but found ~
+SyntaxError:33:Expected ; but found ~
 "" ~ ""
    ^
-SyntaxError: test/script/basic/JDK-8019791.js#41<eval>:1:18 Expected ) but found ~
+SyntaxError:41:Expected ) but found ~
 function() { if (1~0) return 0; return 1 }
                   ^
diff --git a/test/script/basic/JDK-8019805.js b/test/script/basic/JDK-8019805.js
index 70371fb8..7e3e25b5 100644
--- a/test/script/basic/JDK-8019805.js
+++ b/test/script/basic/JDK-8019805.js
@@ -32,5 +32,5 @@ try {
     eval("for each(var v=0;false;);");
     print("FAILED: for each(var v=0; false;); should have thrown error");
 } catch (e) {
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
diff --git a/test/script/basic/JDK-8019805.js.EXPECTED b/test/script/basic/JDK-8019805.js.EXPECTED
index 154c3326..76d335e4 100644
--- a/test/script/basic/JDK-8019805.js.EXPECTED
+++ b/test/script/basic/JDK-8019805.js.EXPECTED
@@ -1,3 +1,3 @@
-SyntaxError: test/script/basic/JDK-8019805.js#32<eval>:1:16 for each can only be used with for..in
+SyntaxError:32:for each can only be used with for..in
 for each(var v=0;false;);
                 ^
diff --git a/test/script/basic/JDK-8023026.js b/test/script/basic/JDK-8023026.js
index 9080ec8c..0a6f0272 100644
--- a/test/script/basic/JDK-8023026.js
+++ b/test/script/basic/JDK-8023026.js
@@ -48,7 +48,7 @@ function checkIterations(obj) {
         function(x) x*x));
 }
 
-var array = new (Java.type("[I"))(4);
+var array = new (Java.type("int[]"))(4);
 for (var i in array) {
     array[i] = i;
 }
diff --git a/test/script/basic/JDK-8024847.js b/test/script/basic/JDK-8024847.js
index 4a671ecd..2ead01fd 100644
--- a/test/script/basic/JDK-8024847.js
+++ b/test/script/basic/JDK-8024847.js
@@ -100,3 +100,9 @@ var obj = new JSObject() {
 var jlist = Java.to(obj, java.util.List);
 print(jlist instanceof java.util.List);
 print(jlist);
+
+var obj = new JSObject() {
+    toNumber: function() { return 42; }
+};
+
+print(32 + obj);
diff --git a/test/script/basic/JDK-8024847.js.EXPECTED b/test/script/basic/JDK-8024847.js.EXPECTED
index 015183a0..16bff3e2 100644
--- a/test/script/basic/JDK-8024847.js.EXPECTED
+++ b/test/script/basic/JDK-8024847.js.EXPECTED
@@ -10,3 +10,4 @@ true
 [hello, world]
 true
 [nashorn, js]
+74
diff --git a/test/script/basic/JDK-8025213.js b/test/script/basic/JDK-8025213.js
new file mode 100644
index 00000000..062a389e
--- /dev/null
+++ b/test/script/basic/JDK-8025213.js
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8025213: Assignment marks variable as defined too early
+ *
+ * @test
+ * @run
+ */
+
+function test() {
+    if (String("")) {
+        var foo = 42;
+    }
+    foo = foo + 1;
+    print(foo);
+}
+
+test();
diff --git a/test/script/basic/JDK-8025213.js.EXPECTED b/test/script/basic/JDK-8025213.js.EXPECTED
new file mode 100644
index 00000000..736991a1
--- /dev/null
+++ b/test/script/basic/JDK-8025213.js.EXPECTED
@@ -0,0 +1 @@
+NaN
diff --git a/test/script/basic/JDK-8025488.js b/test/script/basic/JDK-8025488.js
new file mode 100644
index 00000000..8229b9fa
--- /dev/null
+++ b/test/script/basic/JDK-8025488.js
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8025488: Error.captureStackTrace should not format error stack
+ *
+ * @test
+ * @run
+ */
+
+
+function MyError () {
+    Error.call(this);
+    Error.captureStackTrace(this);
+    this.arr = {};
+};
+
+MyError.prototype.toString = function() {
+    return this.arr.toString();
+}
+
+var e = new MyError(); 
+print(e.stack.replace(/\\/g, '/'));
diff --git a/test/script/basic/JDK-8025488.js.EXPECTED b/test/script/basic/JDK-8025488.js.EXPECTED
new file mode 100644
index 00000000..40b244a9
--- /dev/null
+++ b/test/script/basic/JDK-8025488.js.EXPECTED
@@ -0,0 +1,3 @@
+[object Object]
+	at MyError (test/script/basic/JDK-8025488.js:34)
+	at <program> (test/script/basic/JDK-8025488.js:42)
diff --git a/test/script/basic/JDK-8025515.js b/test/script/basic/JDK-8025515.js
new file mode 100644
index 00000000..f3d7cee4
--- /dev/null
+++ b/test/script/basic/JDK-8025515.js
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8025515: Performance issues with Source.getLine()
+ *
+ * @test
+ * @run
+ */
+
+// Make sure synthetic names of anonymous functions have correct line numbers
+
+function testMethodName(f, expected) {
+    try {
+        f();
+        fail("expected error");
+    } catch (e) {
+        var stack = e.getStackTrace();
+        if (stack[0].methodName !== expected) {
+            fail("got " + stack[0].methodName + ", expected " + expected);
+        }
+    }
+}
+
+testMethodName(function() {
+    return a.b.c;
+}, "_L45");
+
+testMethodName(function() { throw new Error() }, "_L49");
+
+var f = (function() {
+    return function() { a.b.c; };
+})();
+testMethodName(f, "_L51$_L52");
+
+testMethodName((function() {
+    return function() { return a.b.c; };
+})(), "_L56$_L57");
diff --git a/test/script/basic/JDK-8025520.js b/test/script/basic/JDK-8025520.js
new file mode 100644
index 00000000..773a30ab
--- /dev/null
+++ b/test/script/basic/JDK-8025520.js
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8025520: Array.prototype.slice should only copy defined elements
+ *
+ * @test
+ * @run
+ */
+
+var s = Array.prototype.slice.call({length: 6, 3: 1}, 2, 5);
+
+if (s.length != 3) {
+    fail("s.length != 3");
+}
+if (0 in s) {
+    fail("0 in s");
+}
+if (s.hasOwnProperty(0)) {
+    fail("s.hasOwnProperty(0)");
+}
+if (s[1] !== 1) {
+    fail("s[1] !== 1");
+}
+if (2 in s) {
+    fail("2 in s");
+}
+if (s.hasOwnProperty(2)) {
+    fail("s.hasOwnProperty(2)");
+}
diff --git a/test/script/basic/JDK-8025589.js b/test/script/basic/JDK-8025589.js
new file mode 100644
index 00000000..a74261c1
--- /dev/null
+++ b/test/script/basic/JDK-8025589.js
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8025589:  Array.prototype.shift should only copy defined elements in generic mode
+ *
+ * @test
+ * @run
+ */
+
+var s = {length: 4, 2: 1};
+Array.prototype.shift.call(s);
+
+if (s.length != 3) {
+    fail("s.length != 3");
+}
+if (0 in s) {
+    fail("0 in s");
+}
+if (s.hasOwnProperty(0)) {
+    fail("s.hasOwnProperty(0)");
+}
+if (s[1] !== 1) {
+    fail("s[1] !== 1");
+}
+if (2 in s) {
+    fail("2 in s");
+}
+if (s.hasOwnProperty(2)) {
+    fail("s.hasOwnProperty(2)");
+}
diff --git a/test/script/basic/JDK-8026008.js b/test/script/basic/JDK-8026008.js
new file mode 100644
index 00000000..20c1d5f0
--- /dev/null
+++ b/test/script/basic/JDK-8026008.js
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026008: Constant folding removes var statement
+ *
+ * @test
+ * @run
+ */
+
+if (false) {
+    var x1 = 10;
+    if (false) {
+        var x2;
+    }
+} else {
+   print(x1, x2);
+}
+
+if (undefined) {
+    var z1;
+    if (null) {
+        var z2;
+    }
+}
+
+print(z1, z2);
+
+if (1) {
+    print(y1, y2);
+} else if (0) {
+    var y1 = 1;
+} else {
+    var y2 = 2
+}
diff --git a/test/script/basic/JDK-8026008.js.EXPECTED b/test/script/basic/JDK-8026008.js.EXPECTED
new file mode 100644
index 00000000..6bbb6d93
--- /dev/null
+++ b/test/script/basic/JDK-8026008.js.EXPECTED
@@ -0,0 +1,3 @@
+undefined undefined
+undefined undefined
+undefined undefined
diff --git a/test/script/basic/JDK-8026016.js b/test/script/basic/JDK-8026016.js
new file mode 100644
index 00000000..43f268d8
--- /dev/null
+++ b/test/script/basic/JDK-8026016.js
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026016: too many relinks dominate avatar.js http benchmark
+ *
+ * @test
+ * @run
+ */
+
+function accessMegamorphic() {
+    for (var i = 0; i < 26; i++) {
+        var o = {};
+        o[String.fromCharCode(i + 97)] = 1;
+        o._;
+    }
+}
+
+function invokeMegamorphic() {
+    for (var i = 0; i < 26; i++) {
+        var o = {};
+        o[String.fromCharCode(i + 97)] = 1;
+        try {
+            o._(i);
+        } catch (e) {
+            print(e);
+        }
+    }
+}
+
+Object.prototype.__noSuchProperty__ = function() {
+    print("no such property", Array.prototype.slice.call(arguments));
+};
+
+invokeMegamorphic();
+accessMegamorphic();
+
+Object.prototype.__noSuchMethod__ = function() {
+    print("no such method", Array.prototype.slice.call(arguments));
+};
+
+invokeMegamorphic();
+accessMegamorphic();
+
+Object.prototype.__noSuchMethod__ = "nofunction";
+
+invokeMegamorphic();
+accessMegamorphic();
diff --git a/test/script/basic/JDK-8026016.js.EXPECTED b/test/script/basic/JDK-8026016.js.EXPECTED
new file mode 100644
index 00000000..a2d23834
--- /dev/null
+++ b/test/script/basic/JDK-8026016.js.EXPECTED
@@ -0,0 +1,182 @@
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+TypeError: Cannot call undefined
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such method _,0
+no such method _,1
+no such method _,2
+no such method _,3
+no such method _,4
+no such method _,5
+no such method _,6
+no such method _,7
+no such method _,8
+no such method _,9
+no such method _,10
+no such method _,11
+no such method _,12
+no such method _,13
+no such method _,14
+no such method _,15
+no such method _,16
+no such method _,17
+no such method _,18
+no such method _,19
+no such method _,20
+no such method _,21
+no such method _,22
+no such method _,23
+no such method _,24
+no such method _,25
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+TypeError: Cannot call undefined
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
+no such property _
diff --git a/test/script/basic/JDK-8026033.js b/test/script/basic/JDK-8026033.js
new file mode 100644
index 00000000..4a5d8594
--- /dev/null
+++ b/test/script/basic/JDK-8026033.js
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026033: Switch should load expression even when there are no cases in it
+ *
+ * @test
+ * @run
+ */
+
+try {
+    (function() { switch(x) {} })();
+    fail("Should have thrown ReferenceError");
+} catch (e) {
+    if (! (e instanceof ReferenceError)) {
+        fail("ReferenceError expected, got " + e);
+    }
+    print(e);
+}
diff --git a/test/script/basic/JDK-8026033.js.EXPECTED b/test/script/basic/JDK-8026033.js.EXPECTED
new file mode 100644
index 00000000..c007ed7b
--- /dev/null
+++ b/test/script/basic/JDK-8026033.js.EXPECTED
@@ -0,0 +1 @@
+ReferenceError: "x" is not defined
diff --git a/test/script/basic/JDK-8026042.js b/test/script/basic/JDK-8026042.js
new file mode 100644
index 00000000..a853626f
--- /dev/null
+++ b/test/script/basic/JDK-8026042.js
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026042: FoldConstants need to guard against ArrayLiteralNode
+ *
+ * @test
+ * @run
+ */
+
+try {
+    if ([a]) {
+        print("fail");
+    }
+} catch (e) {
+    print(e);
+}
+
+try {
+    [a] ? print(1) : print(2);
+} catch (e) {
+    print(e);
+}
diff --git a/test/script/basic/JDK-8026042.js.EXPECTED b/test/script/basic/JDK-8026042.js.EXPECTED
new file mode 100644
index 00000000..aae23d09
--- /dev/null
+++ b/test/script/basic/JDK-8026042.js.EXPECTED
@@ -0,0 +1,2 @@
+ReferenceError: "a" is not defined
+ReferenceError: "a" is not defined
diff --git a/test/script/basic/JDK-8026048.js b/test/script/basic/JDK-8026048.js
new file mode 100644
index 00000000..33789fea
--- /dev/null
+++ b/test/script/basic/JDK-8026048.js
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026048: Function constructor should convert arguments to String before performing any syntax checks
+ *
+ * @test
+ * @run
+ */
+
+try {
+    Function("-", {toString:function(){throw "err"}})
+} catch (e) {
+    if (e !== "err") {
+        fail("err xpected, got " + e);
+    }
+}
diff --git a/test/script/basic/JDK-8026112.js b/test/script/basic/JDK-8026112.js
new file mode 100644
index 00000000..0e869f70
--- /dev/null
+++ b/test/script/basic/JDK-8026112.js
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026112: Function("with(x ? 1e81 : (x2.constructor = 0.1)){}") throws AssertionError: double is not compatible with object
+ *
+ * @test
+ * @run
+ */
+
+Function("with(x ? 1e81 : (x2.constructor = 0.1)){}")
diff --git a/test/script/basic/JDK-8026125.js b/test/script/basic/JDK-8026125.js
new file mode 100644
index 00000000..bb3a43d8
--- /dev/null
+++ b/test/script/basic/JDK-8026125.js
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026125: Array.prototype.slice.call(Java.type("java.util.HashMap")) throws ClassCastException: jdk.internal.dynalink.beans.StaticClass cannot be cast to jdk.nashorn.internal.runtime.ScriptObject
+ *
+ * @test
+ * @run
+ */
+
+Array.prototype.splice.call(Java.type("java.util.HashMap"))
+Array.prototype.slice.call(Java.type("java.util.HashMap"))
diff --git a/test/script/basic/JDK-8026137.js b/test/script/basic/JDK-8026137.js
new file mode 100644
index 00000000..4a19643f
--- /dev/null
+++ b/test/script/basic/JDK-8026137.js
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026137: Binary evaluation order in JavaScript is load load 
+ * convert convert, not load convert load convert.
+ *
+ * @test
+ * @run
+ */
+
+try {
+    (function f() { Object.defineProperty({},"x",{get: function(){return {valueOf:function(){throw 0}}}}).x - Object.defineProperty({},"x",{get: function(){throw 1}}).x })()
+} 
+catch (e) {
+    print(e);
+}
+
+try {
+    ({valueOf: function(){throw 0}}) - ({valueOf: function(){throw 1}} - 1) 
+} catch (e) {
+    print(e);
+}
+
diff --git a/test/script/basic/JDK-8026137.js.EXPECTED b/test/script/basic/JDK-8026137.js.EXPECTED
new file mode 100644
index 00000000..6ed281c7
--- /dev/null
+++ b/test/script/basic/JDK-8026137.js.EXPECTED
@@ -0,0 +1,2 @@
+1
+1
diff --git a/test/script/basic/JDK-8026161.js b/test/script/basic/JDK-8026161.js
new file mode 100644
index 00000000..49f888b7
--- /dev/null
+++ b/test/script/basic/JDK-8026161.js
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026161: Don't narrow floating-point literals in the lexer
+ *
+ * @test
+ * @run
+ */
+
+print(new java.awt.Color(1, 1, 1)) // creates Color[r=1,g=1,b=1]
+print(new java.awt.Color(1.0, 1.0, 1.0)) // Color[r=255,g=255,b=255]
diff --git a/test/script/basic/JDK-8026161.js.EXPECTED b/test/script/basic/JDK-8026161.js.EXPECTED
new file mode 100644
index 00000000..c7b00b08
--- /dev/null
+++ b/test/script/basic/JDK-8026161.js.EXPECTED
@@ -0,0 +1,2 @@
+java.awt.Color[r=1,g=1,b=1]
+java.awt.Color[r=255,g=255,b=255]
diff --git a/test/script/basic/JDK-8026162.js b/test/script/basic/JDK-8026162.js
new file mode 100644
index 00000000..ccd6ee71
--- /dev/null
+++ b/test/script/basic/JDK-8026162.js
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026162: "this" in SAM adapter functions is wrong
+ *
+ * @test
+ * @run
+ */
+
+var global = this;
+
+new java.lang.Runnable(
+  function func() {
+      if (this !== global) {
+          fail("Expected 'this' to be global instance");
+      }
+  }
+).run();
+
+new java.lang.Runnable(
+  function func() {
+      'use strict';
+      if (typeof this != 'undefined') {
+          fail("Expected 'undefined' to be global instance");
+      }
+  }
+).run();
diff --git a/test/script/basic/JDK-8026167.js b/test/script/basic/JDK-8026167.js
new file mode 100644
index 00000000..4959e62a
--- /dev/null
+++ b/test/script/basic/JDK-8026167.js
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026167: Class cache/reuse of 'eval' scripts results in ClassCastException in some cases.
+ *
+ * @test
+ * @run
+ */
+
+var m = new javax.script.ScriptEngineManager();
+var e = m.getEngineByName('js');
+
+// leave the whitespace - need both eval("e") at same column for this test!
+
+e.eval('function f(e) {            eval("e") } f()');
+e.eval('function f() { var e = 33; eval("e") } f()');
+
+function f() {
+    Function.call.call(function x() { eval("x") }); eval("x") 
+}
+
+try {
+    f();
+    fail("Should have thrown ReferenceError");
+} catch (e) {
+    if (! (e instanceof ReferenceError)) {
+        fail("ReferenceError expected but got " + e);
+    }
+}
diff --git a/test/script/basic/JDK-8026248.js b/test/script/basic/JDK-8026248.js
new file mode 100644
index 00000000..e54d3383
--- /dev/null
+++ b/test/script/basic/JDK-8026248.js
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026248: importClass has to be a varargs function
+ *
+ * @test
+ * @run
+ */
+
+load('nashorn:mozilla_compat.js')
+
+importClass(java.io.File, java.io.InputStream) 
+
+print(File)
+print(InputStream)
+
+importClass(java.util.Map, java.util.HashMap, java.io.PrintStream)
+
+print(HashMap)
+print(Map)
+print(PrintStream)
+
+importClass.call(this, java.util.Collections, java.util.List);
+print(Collections)
+print(List)
+
+importClass.apply(this, [ java.util.Queue, java.math.BigInteger, java.math.BigDecimal ]);
+print(Queue)
+print(BigInteger)
+print(BigDecimal)
diff --git a/test/script/basic/JDK-8026248.js.EXPECTED b/test/script/basic/JDK-8026248.js.EXPECTED
new file mode 100644
index 00000000..361b8e17
--- /dev/null
+++ b/test/script/basic/JDK-8026248.js.EXPECTED
@@ -0,0 +1,10 @@
+[JavaClass java.io.File]
+[JavaClass java.io.InputStream]
+[JavaClass java.util.HashMap]
+[JavaClass java.util.Map]
+[JavaClass java.io.PrintStream]
+[JavaClass java.util.Collections]
+[JavaClass java.util.List]
+[JavaClass java.util.Queue]
+[JavaClass java.math.BigInteger]
+[JavaClass java.math.BigDecimal]
diff --git a/test/script/basic/JDK-8026264.js b/test/script/basic/JDK-8026264.js
new file mode 100644
index 00000000..b4de01d2
--- /dev/null
+++ b/test/script/basic/JDK-8026264.js
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026264: Getter, setter function name mangling issues
+ *
+ * @test
+ * @run
+ */
+
+var obj = {
+   get ":"(){},
+   set ":"(x){},
+   get ""(){},
+   set ""(x){}
+};
+
+var desc = Object.getOwnPropertyDescriptor(obj, ":");
+if (desc.get.name != ':') {
+    fail("getter name is expected to be ':' got " + desc.get.name);
+}
+
+if (desc.set.name != ':') {
+    fail("setter name is expected to be ':' got " + desc.set.name);
+}
+
+desc = Object.getOwnPropertyDescriptor(obj, "");
+if (desc.get.name != '') {
+    fail("getter name is expected to be '' got " + desc.get.name);
+}
+
+if (desc.set.name != '') {
+    fail("setter name is expected to be '' got " + desc.set.name);
+}
diff --git a/test/script/basic/JDK-8026292.js b/test/script/basic/JDK-8026292.js
new file mode 100644
index 00000000..740895f2
--- /dev/null
+++ b/test/script/basic/JDK-8026292.js
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026292: Megamorphic setter fails with boolean value
+ *
+ * @test
+ * @run
+ */
+
+function megamorphic(o) {
+    o.w = true;
+    if (!o.w)
+        throw new Error();
+}
+
+// Calls below must exceed megamorphic callsite threshhold
+for (var i = 0; i < 10; i++) {
+    megamorphic({a: 1});
+    megamorphic({b: 1});
+    megamorphic({c: 1});
+    megamorphic({d: 1});
+    megamorphic({e: 1});
+    megamorphic({f: 1});
+    megamorphic({g: 1});
+    megamorphic({h: 1});
+    megamorphic({i: 1});
+    megamorphic({j: 1});
+    megamorphic({k: 1});
+    megamorphic({l: 1});
+    megamorphic({m: 1});
+    megamorphic({n: 1});
+    megamorphic({o: 1});
+    megamorphic({p: 1});
+    megamorphic({q: 1});
+    megamorphic({r: 1});
+    megamorphic({s: 1});
+    megamorphic({t: 1});
+    megamorphic({u: 1});
+    megamorphic({v: 1});
+    megamorphic({w: 1});
+    megamorphic({x: 1});
+    megamorphic({y: 1});
+    megamorphic({z: 1});
+}
diff --git a/test/script/basic/JDK-8026302.js b/test/script/basic/JDK-8026302.js
new file mode 100644
index 00000000..786cc118
--- /dev/null
+++ b/test/script/basic/JDK-8026302.js
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026302: source representation of getter and setter methods is wrong
+ *
+ * @test
+ * @run
+ */
+
+var obj = {
+    get "foo"() {},
+    set "foo"(x) {},
+    get bar() {},
+    set bar(x) {},
+    get ":"() {},
+    set ":"(x) {},
+    get 12() {},
+    set 12(x) {},
+    get 1.8e-8() {},
+    set 1.8e-8(x) {}
+}
+
+for (var prop in obj) {
+    var desc = Object.getOwnPropertyDescriptor(obj, prop);
+    print(desc.get);
+    print(desc.set);
+} 
diff --git a/test/script/basic/JDK-8026302.js.EXPECTED b/test/script/basic/JDK-8026302.js.EXPECTED
new file mode 100644
index 00000000..232edc00
--- /dev/null
+++ b/test/script/basic/JDK-8026302.js.EXPECTED
@@ -0,0 +1,10 @@
+get "foo"() {}
+set "foo"(x) {}
+get bar() {}
+set bar(x) {}
+get ":"() {}
+set ":"(x) {}
+get 12() {}
+set 12(x) {}
+get 1.8e-8() {}
+set 1.8e-8(x) {}
diff --git a/test/script/basic/JDK-8026317.js b/test/script/basic/JDK-8026317.js
new file mode 100644
index 00000000..57bea9cb
--- /dev/null
+++ b/test/script/basic/JDK-8026317.js
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026317: $ in the function name results in wrong function being invoked
+ *
+ * @test
+ * @run
+ */
+
+function case1() {
+    function g() {
+        return 0
+    }
+    function g() {
+        return 1
+    }
+    function g$1() {
+        return 2
+    }
+
+    return g$1()
+}
+
+print(case1());
+
+function case2() {
+    function g() {
+        return 0
+    }
+
+    var h = function g() {
+        return 1
+    }
+
+    function g$1() {
+        return 2
+    }
+
+    return h()
+}
+
+print(case2());
diff --git a/test/script/basic/JDK-8026317.js.EXPECTED b/test/script/basic/JDK-8026317.js.EXPECTED
new file mode 100644
index 00000000..5f1d0ece
--- /dev/null
+++ b/test/script/basic/JDK-8026317.js.EXPECTED
@@ -0,0 +1,2 @@
+2
+1
diff --git a/test/script/basic/JDK-8026367.js b/test/script/basic/JDK-8026367.js
new file mode 100644
index 00000000..c5e12358
--- /dev/null
+++ b/test/script/basic/JDK-8026367.js
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026367: Add a sync keyword to mozilla_compat
+ *
+ * @test
+ * @run
+ */
+
+if (typeof sync === "undefined") {
+    load("nashorn:mozilla_compat.js");
+}
+
+var obj = {
+    count: 0,
+    // Sync called with one argument will synchronize on this-object of invocation
+    inc: sync(function(d) {
+        this.count += d;
+    }),
+    // Pass explicit object to synchronize on as second argument
+    dec: sync(function(d) {
+        this.count -= d;
+    }, obj)
+};
+
+var t1 = new java.lang.Thread(function() {
+    for (var i = 0; i < 100000; i++) obj.inc(1);
+});
+var t2 = new java.lang.Thread(function() {
+    for (var i = 0; i < 100000; i++) obj.dec(1);
+});
+
+t1.start();
+t2.start();
+t1.join();
+t2.join();
+
+if (obj.count !== 0) {
+    throw new Error("Expected count == 0, got " + obj.count);
+}
diff --git a/test/script/basic/JDK-8026692.js b/test/script/basic/JDK-8026692.js
new file mode 100644
index 00000000..f9f0f38c
--- /dev/null
+++ b/test/script/basic/JDK-8026692.js
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026692: eval() throws NullPointerException with --compile-only
+ *
+ * @test
+ * @option --compile-only
+ * @run
+ */
+
+eval("");
diff --git a/test/script/basic/JDK-8026693.js b/test/script/basic/JDK-8026693.js
new file mode 100644
index 00000000..fd1dd5fa
--- /dev/null
+++ b/test/script/basic/JDK-8026693.js
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026693: getType() called on DISCARD node
+ *
+ * @test
+ * @run
+ */
+
+function f() {
+    if(x, y) z;
+}
diff --git a/test/script/basic/JDK-8026701.js b/test/script/basic/JDK-8026701.js
new file mode 100644
index 00000000..90a1739c
--- /dev/null
+++ b/test/script/basic/JDK-8026701.js
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026701: Array.prototype.splice is slow on dense arrays
+ *
+ * @test
+ * @run
+ */
+
+function testSplice(arr, e1, e2, e3) {
+    try {
+        print(arr);
+        print(arr.splice(3, 0, e1, e2, e3));
+        print(arr);
+        print(arr.splice(2, 3));
+        print(arr);
+        print(arr.splice(2, 3, arr[2], arr[3], arr[4]));
+        print(arr);
+        print(arr.splice(20, 10));
+        print(arr);
+        print(arr.splice(arr.length, 0, e1, e2, e3));
+        print(arr);
+        print(arr.splice(0, 2, arr[0], arr[1], arr[2], arr[3]));
+        print(arr);
+    } catch (error) {
+        print(error);
+    }
+}
+
+function convert(array, type) {
+    return (typeof Java === "undefined") ? array : Java.from(Java.to(array, type));
+}
+
+// run some splice tests on all dense array implementations
+testSplice([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], -1, -2, -3);
+testSplice(convert([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "long[]"), -1, -2, -3);
+testSplice(convert([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "double[]"), -1, -2, -3);
+testSplice(["1", "2", "3", "4", "5", "6", "7", "8", "9", "10"], -1, -2, -3);
+
+// test array conversion during splice
+testSplice([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], -1, "-2", "-3");
+testSplice([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], -1, -2.5, -3.5);
+testSplice(convert([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "long[]"), -1, "-2", "-3");
+testSplice(convert([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "long[]"), -1, -2.5, -3.5);
+testSplice(convert([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "double[]"), -1, "-2", "-3");
+
+// test combination with defined elements
+testSplice(Object.defineProperty([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 5, {value: 13}), -1, -2, -3);
+testSplice(Object.defineProperty([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 5, {value: 13, writable: false}), -1, -2, -3);
+testSplice(Object.defineProperty([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 5, {value: 13, configurable: false}), -1, -2, -3);
+testSplice(Object.defineProperty([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 5, {value: 13, writable: false, configurable: false}), -1, -2, -3);
diff --git a/test/script/basic/JDK-8026701.js.EXPECTED b/test/script/basic/JDK-8026701.js.EXPECTED
new file mode 100644
index 00000000..b70bbe25
--- /dev/null
+++ b/test/script/basic/JDK-8026701.js.EXPECTED
@@ -0,0 +1,147 @@
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2.5,-3.5,4,5,6,7,8,9,10
+3,-1,-2.5
+1,2,-3.5,4,5,6,7,8,9,10
+-3.5,4,5
+1,2,-3.5,4,5,6,7,8,9,10
+
+1,2,-3.5,4,5,6,7,8,9,10
+
+1,2,-3.5,4,5,6,7,8,9,10,-1,-2.5,-3.5
+1,2
+1,2,-3.5,4,-3.5,4,5,6,7,8,9,10,-1,-2.5,-3.5
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2.5,-3.5,4,5,6,7,8,9,10
+3,-1,-2.5
+1,2,-3.5,4,5,6,7,8,9,10
+-3.5,4,5
+1,2,-3.5,4,5,6,7,8,9,10
+
+1,2,-3.5,4,5,6,7,8,9,10
+
+1,2,-3.5,4,5,6,7,8,9,10,-1,-2.5,-3.5
+1,2
+1,2,-3.5,4,-3.5,4,5,6,7,8,9,10,-1,-2.5,-3.5
+1,2,3,4,5,6,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,6,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,6,7,8,9,10
+-3,4,5
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10
+
+1,2,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,6,7,8,9,10,-1,-2,-3
+1,2,3,4,5,13,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,13,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,13,7,8,9,10
+-3,4,5
+1,2,-3,4,5,13,7,8,9,10
+
+1,2,-3,4,5,13,7,8,9,10
+
+1,2,-3,4,5,13,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,13,7,8,9,10,-1,-2,-3
+1,2,3,4,5,13,7,8,9,10
+TypeError: "5" is not a writable property of [object Array]
+1,2,3,4,5,13,7,8,9,10
+
+1,2,3,-1,-2,-3,4,5,13,7,8,9,10
+3,-1,-2
+1,2,-3,4,5,13,7,8,9,10
+-3,4,5
+1,2,-3,4,5,13,7,8,9,10
+
+1,2,-3,4,5,13,7,8,9,10
+
+1,2,-3,4,5,13,7,8,9,10,-1,-2,-3
+1,2
+1,2,-3,4,-3,4,5,13,7,8,9,10,-1,-2,-3
+1,2,3,4,5,13,7,8,9,10
+TypeError: "5" is not a writable property of [object Array]
diff --git a/test/script/basic/JDK-8026805.js b/test/script/basic/JDK-8026805.js
new file mode 100644
index 00000000..0133a0b6
--- /dev/null
+++ b/test/script/basic/JDK-8026805.js
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026805: Array.prototype.length doesn't work as expected
+ *
+ * @test
+ * @run
+ */
+
+if (Array.prototype.length !== 0) {
+    throw new Error("Initial length not 0");
+}
+
+Array.prototype[3] = 1;
+
+if (Array.prototype.length !== 4) {
+    throw new Error("length not updated to 4");
+}
+
+Array.prototype.length = 0;
+
+if (Array.prototype.length !== 0) {
+    throw new Error("length not reset to 0");
+}
+
+if (3 in Array.prototype) {
+    throw new Error("array element not deleted");
+}
diff --git a/test/script/basic/JDK-8026858.js b/test/script/basic/JDK-8026858.js
new file mode 100644
index 00000000..92562ac1
--- /dev/null
+++ b/test/script/basic/JDK-8026858.js
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026858: Array length does not handle defined properties correctly
+ *
+ * @test
+ * @run
+ */
+
+var arr = [];
+
+Object.defineProperty(arr, "3", {value: 1 /* configurable: false */});
+
+if (arr[3] != 1) {
+    throw new Error("arr[3] not defined");
+}
+
+if (arr.length !== 4) {
+    throw new Error("Array length not updated to 4");
+}
+
+Object.defineProperty(arr, "5", {value: 1, configurable: true});
+
+if (arr[5] != 1) {
+    throw new Error("arr[5] not defined");
+}
+
+if (arr.length !== 6) {
+    throw new Error("Array length not updated to 4");
+}
+
+arr.length = 0;
+
+if (5 in arr) {
+    throw new Error("configurable element was not deleted");
+}
+
+if (arr[3] != 1) {
+    throw new Error("non-configurable element was deleted");
+}
+
+if (arr.length !== 4) {
+    throw new Error("Array length not set");
+}
+
diff --git a/test/script/basic/JDK-8026955.js b/test/script/basic/JDK-8026955.js
new file mode 100644
index 00000000..a54e3d96
--- /dev/null
+++ b/test/script/basic/JDK-8026955.js
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026955: for-in should convert primitive values to object
+ *
+ * @test
+ * @run
+ */
+
+Object.prototype[4] = "world";
+String.prototype[3] = "hello";
+Number.prototype[3] = "hello";
+Boolean.prototype[3] = "hello";
+
+function testForIn(x) {
+    for (var i in x) {
+        print(i, x[i]);
+    }
+    for each (var i in x) {
+        print(i);
+    }
+}
+
+testForIn("abc");
+testForIn(false);
+testForIn(3);
+testForIn(null);
+testForIn();
+testForIn(String.prototype);
+
diff --git a/test/script/basic/JDK-8026955.js.EXPECTED b/test/script/basic/JDK-8026955.js.EXPECTED
new file mode 100644
index 00000000..3852d5ab
--- /dev/null
+++ b/test/script/basic/JDK-8026955.js.EXPECTED
@@ -0,0 +1,22 @@
+0 a
+1 b
+2 c
+3 hello
+4 world
+a
+b
+c
+hello
+world
+3 hello
+4 world
+hello
+world
+3 hello
+4 world
+hello
+world
+3 hello
+4 world
+hello
+world
diff --git a/test/script/basic/JDK-8027016.js b/test/script/basic/JDK-8027016.js
new file mode 100644
index 00000000..f84050fb
--- /dev/null
+++ b/test/script/basic/JDK-8027016.js
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027016: Array.prototype.indexOf should return -1 when array is of length zero
+ *
+ * @test
+ * @run
+ */
+
+var res = [].indexOf(null, {valueOf:function(){throw "not reached"}});
+if (res != -1) {
+    fail("expected -1 on indexOf on empty array");
+}
+
+// add index beyond length check as well
+
+res = [].indexOf(null, 1);
+if (res != -1) {
+    fail("expected -1 on indexOf on empty array");
+}
+
diff --git a/test/script/basic/JDK-8027024.js b/test/script/basic/JDK-8027024.js
new file mode 100644
index 00000000..890c6917
--- /dev/null
+++ b/test/script/basic/JDK-8027024.js
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027024: String.prototype.charAt and charCodeAt do not evaluate 'self' and 'pos' arguments in right order 
+ *
+ * @test
+ * @run
+ */
+
+
+String.prototype.charAt.call(
+    {
+        toString: function() {
+            print("charAt.self.toString");
+        }
+    },
+
+    {
+        valueOf: function() {
+            print("charAt.pos.valueOf");
+        }
+    }
+);
+
+String.prototype.charCodeAt.call(
+    {
+        toString: function() {
+            print("charCodeAt.self.toString");
+        }
+    },
+
+    {
+        valueOf: function() {
+            print("charCodeAt.pos.valueOf");
+        }
+    }
+);
diff --git a/test/script/basic/JDK-8027024.js.EXPECTED b/test/script/basic/JDK-8027024.js.EXPECTED
new file mode 100644
index 00000000..9793e73a
--- /dev/null
+++ b/test/script/basic/JDK-8027024.js.EXPECTED
@@ -0,0 +1,4 @@
+charAt.self.toString
+charAt.pos.valueOf
+charCodeAt.self.toString
+charCodeAt.pos.valueOf
diff --git a/test/script/basic/JDK-8027042.js b/test/script/basic/JDK-8027042.js
new file mode 100644
index 00000000..eea6373b
--- /dev/null
+++ b/test/script/basic/JDK-8027042.js
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027042: Evaluation order for binary operators can be improved
+ *
+ * @test
+ * @run
+ */
+
+// var with getter side effect
+Object.defineProperty(this, "a", { get: function() {print("get a"); return 1; }});
+
+// var with both getter and conversion side effect
+Object.defineProperty(this, "b", { get: function() {print("get b"); return {valueOf: function() { print("conv b"); return 10; }}; }});
+
+(function() {
+    // var with toPrimitive conversion side effect
+    var c = {valueOf: function() { print("conv c"); return 100; }};
+
+    print(b + (c + a));
+    print(b + (c + b));
+    print(b + (a + b));
+    print(b + (b + c));
+    print(b + (b + c));
+    print(b + (c + (a - b)));
+    print(b + (c + (c - b)));
+    print(b + (c + (b - c)));
+    print(b + (b + (a ? 2 : 3)));
+    print(b + (b + (b ? 2 : 3)));
+    print(b + (b + (c ? 2 : 3)));
+    print(b + ((-c) + (-a)));
+    print(b + ((-c) + (-b)));
+    print(b + ((-c) + (-c)));
+    try { print(b + new a); } catch (e) {}
+    try { print(b + new b); } catch (e) {}
+    try { print(b + new c); } catch (e) {}
+})();
diff --git a/test/script/basic/JDK-8027042.js.EXPECTED b/test/script/basic/JDK-8027042.js.EXPECTED
new file mode 100644
index 00000000..25b34e61
--- /dev/null
+++ b/test/script/basic/JDK-8027042.js.EXPECTED
@@ -0,0 +1,88 @@
+get b
+get a
+conv c
+conv b
+111
+get b
+get b
+conv c
+conv b
+conv b
+120
+get b
+get a
+get b
+conv b
+conv b
+21
+get b
+get b
+conv b
+conv c
+conv b
+120
+get b
+get b
+conv b
+conv c
+conv b
+120
+get b
+get a
+get b
+conv b
+conv c
+conv b
+101
+get b
+get b
+conv c
+conv b
+conv c
+conv b
+200
+get b
+get b
+conv b
+conv c
+conv c
+conv b
+20
+get b
+get b
+get a
+conv b
+conv b
+22
+get b
+get b
+get b
+conv b
+conv b
+22
+get b
+get b
+conv b
+conv b
+22
+get b
+conv c
+get a
+conv b
+-91
+get b
+conv c
+get b
+conv b
+conv b
+-100
+get b
+conv c
+conv c
+conv b
+-190
+get b
+get a
+get b
+get b
+get b
diff --git a/test/script/basic/JDK-8027236.js b/test/script/basic/JDK-8027236.js
new file mode 100644
index 00000000..02f9e8d8
--- /dev/null
+++ b/test/script/basic/JDK-8027236.js
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027236: Ensure ScriptObject and ConsString aren't visible to Java
+ *
+ * @test
+ * @run
+ */
+
+// Check that ConsString is flattened
+var m = new java.util.HashMap()
+var x = "f"
+x += "oo"
+m.put(x, "bar")
+print(m.get("foo"))
+// Note: many more tests are run by the JavaExportImportTest TestNG class.
diff --git a/test/script/basic/JDK-8027236.js.EXPECTED b/test/script/basic/JDK-8027236.js.EXPECTED
new file mode 100644
index 00000000..5716ca59
--- /dev/null
+++ b/test/script/basic/JDK-8027236.js.EXPECTED
@@ -0,0 +1 @@
+bar
diff --git a/test/script/basic/JDK-8027562.js b/test/script/basic/JDK-8027562.js
new file mode 100644
index 00000000..950584b4
--- /dev/null
+++ b/test/script/basic/JDK-8027562.js
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027562: eval should load second and subsequent arguments for side effect
+ *
+ * @test
+ * @run
+ */
+
+try {
+    eval("", x);
+    fail("should have thrown ReferenceError for 'x'");
+} catch (e) {
+    if (! (e instanceof ReferenceError)) {
+        fail("Expected ReferenceError, got " + e);
+    }
+    print(e);
+}
diff --git a/test/script/basic/JDK-8027562.js.EXPECTED b/test/script/basic/JDK-8027562.js.EXPECTED
new file mode 100644
index 00000000..c007ed7b
--- /dev/null
+++ b/test/script/basic/JDK-8027562.js.EXPECTED
@@ -0,0 +1 @@
+ReferenceError: "x" is not defined
diff --git a/test/script/basic/JDK-8027700.js b/test/script/basic/JDK-8027700.js
new file mode 100644
index 00000000..4c5445d8
--- /dev/null
+++ b/test/script/basic/JDK-8027700.js
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027700: function redeclaration checks missing for declaration binding instantiation
+ *
+ * @test
+ * @run
+ */
+
+Object.defineProperty(this,"x", {
+        value:0,
+        writable:true,
+        enumerable:false
+})
+
+try {
+    eval("function x() {}");
+    fail("should have thrown TypeError");
+} catch (e) {
+    if (! (e instanceof TypeError)) {
+        fail("TypeError expected but got " + e);
+    }
+}
+
+Object.defineProperty(this, "foo", { value:0 }) 
+try {
+    eval("function foo() {}");
+    fail("should have thrown TypeError");
+} catch (e) {
+    if (! (e instanceof TypeError)) {
+        fail("TypeError expected but got " + e);
+    }
+}
diff --git a/test/script/basic/JDK-8027753.js b/test/script/basic/JDK-8027753.js
new file mode 100644
index 00000000..2af0baad
--- /dev/null
+++ b/test/script/basic/JDK-8027753.js
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027753: Support ScriptObject to JSObject, ScriptObjectMirror, Map, Bindings auto-conversion as well as explicit wrap, unwrap
+ *
+ * @test
+ * @run
+ */
+
+var ScriptUtils = Java.type("jdk.nashorn.api.scripting.ScriptUtils");
+var ScriptObjectMirror = Java.type("jdk.nashorn.api.scripting.ScriptObjectMirror");
+
+var obj = { foo: 34, bar: 'hello' };
+
+var wrapped = ScriptUtils.wrap(obj);
+if (! (wrapped instanceof ScriptObjectMirror)) {
+    fail("ScriptUtils.wrap does not return a ScriptObjectMirror");
+}
+
+print("wrapped.foo = " + wrapped.foo);
+print("wrapped.bar = " + wrapped.bar);
+
+var unwrapped = ScriptUtils.unwrap(wrapped);
+if (! (unwrapped instanceof Object)) {
+    fail("ScriptUtils.unwrap does not return a ScriptObject");
+}
+
+// same object unwrapped?
+print(unwrapped === obj);
diff --git a/test/script/basic/JDK-8027753.js.EXPECTED b/test/script/basic/JDK-8027753.js.EXPECTED
new file mode 100644
index 00000000..30a8779e
--- /dev/null
+++ b/test/script/basic/JDK-8027753.js.EXPECTED
@@ -0,0 +1,3 @@
+wrapped.foo = 34
+wrapped.bar = hello
+true
diff --git a/test/script/basic/JDK-8027828.js b/test/script/basic/JDK-8027828.js
new file mode 100644
index 00000000..ab60938b
--- /dev/null
+++ b/test/script/basic/JDK-8027828.js
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8027828: ClassCastException when converting return value of a Java method to boolean
+ *
+ * @test
+ * @run
+ */
+
+var x = new java.util.HashMap()
+x.put('test', new java.io.File('test'))
+if (x.get("test")) {
+  print('Found!')
+}
diff --git a/test/script/basic/JDK-8027828.js.EXPECTED b/test/script/basic/JDK-8027828.js.EXPECTED
new file mode 100644
index 00000000..7a8c9edc
--- /dev/null
+++ b/test/script/basic/JDK-8027828.js.EXPECTED
@@ -0,0 +1 @@
+Found!
diff --git a/test/script/basic/JDK-8028020.js b/test/script/basic/JDK-8028020.js
new file mode 100644
index 00000000..4dfa0cad
--- /dev/null
+++ b/test/script/basic/JDK-8028020.js
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8028020: Function parameter as last expression in comma in return value causes bad type calculation
+ *
+ * @test
+ * @run
+ */
+
+function f(x) {
+    return 1, x
+}
+
+function g(x, y) {
+    return x, y
+}
+
+print(f("'1, x' works."))
+print(g(42, "'x, y' works too."))
diff --git a/test/script/basic/JDK-8028020.js.EXPECTED b/test/script/basic/JDK-8028020.js.EXPECTED
new file mode 100644
index 00000000..816a21ce
--- /dev/null
+++ b/test/script/basic/JDK-8028020.js.EXPECTED
@@ -0,0 +1,2 @@
+'1, x' works.
+'x, y' works too.
diff --git a/test/script/basic/NASHORN-100.js b/test/script/basic/NASHORN-100.js
index fdea1cf0..df81284d 100644
--- a/test/script/basic/NASHORN-100.js
+++ b/test/script/basic/NASHORN-100.js
@@ -35,5 +35,5 @@ try {
     if (! (e instanceof SyntaxError)) {
         fail("#2 expected SyntaxError got " + e);
     }
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
diff --git a/test/script/basic/NASHORN-100.js.EXPECTED b/test/script/basic/NASHORN-100.js.EXPECTED
index d183bb33..e9c5a253 100644
--- a/test/script/basic/NASHORN-100.js.EXPECTED
+++ b/test/script/basic/NASHORN-100.js.EXPECTED
@@ -1,3 +1,3 @@
-SyntaxError: test/script/basic/NASHORN-100.js#32<eval>:1:0 Invalid return statement
+SyntaxError:32:Invalid return statement
 return;
 ^
diff --git a/test/script/basic/NASHORN-293.js b/test/script/basic/NASHORN-293.js
index cd83ec46..013714b8 100644
--- a/test/script/basic/NASHORN-293.js
+++ b/test/script/basic/NASHORN-293.js
@@ -40,15 +40,13 @@ for (var i = 0; i < 3; i++) {
     try {
         eval(src);
     } catch (e) {
-        var location =  e.fileName ? e.fileName.slice(-9) : "unknown source";
-        print(e.name, "@", location);
+        printError(e);
     }
 }
 for (var i = 0; i < 3; i++) {
     try {
         eval(src);
     } catch (e) {
-        var location =  e.fileName ? e.fileName.slice(-9) : "unknown source";
-        print(e.name, "@", location);
+        printError(e);
     }
 }
diff --git a/test/script/basic/NASHORN-293.js.EXPECTED b/test/script/basic/NASHORN-293.js.EXPECTED
index 68278106..90fe5f08 100644
--- a/test/script/basic/NASHORN-293.js.EXPECTED
+++ b/test/script/basic/NASHORN-293.js.EXPECTED
@@ -1,9 +1,9 @@
 hello
 hello
 hello
-TypeError @ #41<eval>
-TypeError @ #41<eval>
-TypeError @ #41<eval>
-TypeError @ #49<eval>
-TypeError @ #49<eval>
-TypeError @ #49<eval>
+TypeError:1:read property "foo" from undefined
+TypeError:1:read property "foo" from undefined
+TypeError:1:read property "foo" from undefined
+TypeError:1:read property "foo" from undefined
+TypeError:1:read property "foo" from undefined
+TypeError:1:read property "foo" from undefined
diff --git a/test/script/basic/NASHORN-397.js b/test/script/basic/NASHORN-397.js
index e9484bc0..63e7b3ac 100644
--- a/test/script/basic/NASHORN-397.js
+++ b/test/script/basic/NASHORN-397.js
@@ -35,11 +35,8 @@ if (typeof (5).x !== 'number') {
     fail("typeof(5).x is not 'number'");
 }
 
-// It is function because PrintStream implements Closeable, which is
-// marked with @FunctionalInterface. Yes, this means calling a stream
-// like "stream()" closes it.
-if (typeof (java.lang.System.out) != 'function') {
-    fail("typeof java.lang.System.out is not 'object'");
+if (typeof (java.net.Proxy.NO_PROXY) != 'object') {
+    fail("typeof java.net.Proxy.NO_PROXY is not 'object'");
 }
 
 if (typeof (java.lang.Math.PI) != 'number') {
diff --git a/test/script/basic/NASHORN-40.js b/test/script/basic/NASHORN-40.js
index f031730b..34331ef2 100644
--- a/test/script/basic/NASHORN-40.js
+++ b/test/script/basic/NASHORN-40.js
@@ -31,11 +31,11 @@
 try {
     eval("print(.foo)");
 } catch (e) {
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
 
 try {
     eval(".bar = 3423;");
 } catch (e) {
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
diff --git a/test/script/basic/NASHORN-40.js.EXPECTED b/test/script/basic/NASHORN-40.js.EXPECTED
index 0e03cab3..94f15980 100644
--- a/test/script/basic/NASHORN-40.js.EXPECTED
+++ b/test/script/basic/NASHORN-40.js.EXPECTED
@@ -1,6 +1,6 @@
-SyntaxError: test/script/basic/NASHORN-40.js#32<eval>:1:6 Expected an operand but found .
+SyntaxError:32:Expected an operand but found .
 print(.foo)
       ^
-SyntaxError: test/script/basic/NASHORN-40.js#38<eval>:1:0 Expected an operand but found .
+SyntaxError:38:Expected an operand but found .
 .bar = 3423;
 ^
diff --git a/test/script/basic/NASHORN-51.js b/test/script/basic/NASHORN-51.js
index bc41d79b..45d00e9e 100644
--- a/test/script/basic/NASHORN-51.js
+++ b/test/script/basic/NASHORN-51.js
@@ -35,28 +35,28 @@ for (i in literals) {
         eval(literals[i] + "++");
         print("ERROR!! post increment : " + literals[i]);
     } catch (e) {
-        print(e.toString().replace(/\\/g, '/'));
+        printError(e);
     }
 
     try {
         eval(literals[i] + "--");
         print("ERROR!! post decrement : " + literals[i]);
     } catch (e) {
-        print(e.toString().replace(/\\/g, '/'));
+        printError(e);
     }
 
     try {
         eval("++" + literals[i]);
         print("ERROR!! pre increment : " + literals[i]);
     } catch (e) {
-        print(e.toString().replace(/\\/g, '/'));
+        printError(e);
     }
 
     try {
         eval("--" + literals[i]);
         print("ERROR!! pre decrement : " + literals[i]);
     } catch (e) {
-        print(e.toString().replace(/\\/g, '/'));
+        printError(e);
     }
 }
 
diff --git a/test/script/basic/NASHORN-51.js.EXPECTED b/test/script/basic/NASHORN-51.js.EXPECTED
index 9479f7e1..52013856 100644
--- a/test/script/basic/NASHORN-51.js.EXPECTED
+++ b/test/script/basic/NASHORN-51.js.EXPECTED
@@ -1,72 +1,72 @@
-ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:35:Invalid left hand side for assignment
 1++
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:42:Invalid left hand side for assignment
 1--
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:49:Invalid left hand side for assignment
 ++1
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:56:Invalid left hand side for assignment
 --1
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:35:Invalid left hand side for assignment
 0++
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:42:Invalid left hand side for assignment
 0--
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:49:Invalid left hand side for assignment
 ++0
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:56:Invalid left hand side for assignment
 --0
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:35:Invalid left hand side for assignment
 3.14++
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:42:Invalid left hand side for assignment
 3.14--
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:49:Invalid left hand side for assignment
 ++3.14
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:56:Invalid left hand side for assignment
 --3.14
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:35:Invalid left hand side for assignment
 true++
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:42:Invalid left hand side for assignment
 true--
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:49:Invalid left hand side for assignment
 ++true
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:56:Invalid left hand side for assignment
 --true
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:35:Invalid left hand side for assignment
 false++
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:42:Invalid left hand side for assignment
 false--
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:49:Invalid left hand side for assignment
 ++false
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:56:Invalid left hand side for assignment
 --false
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:35:Invalid left hand side for assignment
 null++
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+ReferenceError:42:Invalid left hand side for assignment
 null--
 ^
-ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:49:Invalid left hand side for assignment
 ++null
   ^
-ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+ReferenceError:56:Invalid left hand side for assignment
 --null
   ^
diff --git a/test/script/basic/NASHORN-98.js b/test/script/basic/NASHORN-98.js
index 3e50cf56..9e341e0c 100644
--- a/test/script/basic/NASHORN-98.js
+++ b/test/script/basic/NASHORN-98.js
@@ -34,7 +34,7 @@ try {
     if (! (e instanceof SyntaxError)) {
        fail("syntax error expected here got " + e);
     }
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 } 
 
 try {
@@ -43,5 +43,5 @@ try {
     if (! (e instanceof SyntaxError)) {
        fail("syntax error expected here got " + e);
     }
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 } 
diff --git a/test/script/basic/NASHORN-98.js.EXPECTED b/test/script/basic/NASHORN-98.js.EXPECTED
index 93a89364..a43935bf 100644
--- a/test/script/basic/NASHORN-98.js.EXPECTED
+++ b/test/script/basic/NASHORN-98.js.EXPECTED
@@ -1,6 +1,6 @@
-SyntaxError: test/script/basic/NASHORN-98.js#32<eval>:1:13 Expected comma but found decimal
+SyntaxError:32:Expected comma but found decimal
 var x = [ 23 34 ]
              ^
-SyntaxError: test/script/basic/NASHORN-98.js#41<eval>:1:18 Expected comma but found ident
+SyntaxError:41:Expected comma but found ident
 var x = { foo: 33 bar: 'hello' }
                   ^
diff --git a/test/script/basic/convert.js b/test/script/basic/convert.js
new file mode 100644
index 00000000..8d11d122
--- /dev/null
+++ b/test/script/basic/convert.js
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Tests for convert method of ScriptUtils.
+ *
+ * @test
+ * @run
+ */
+
+var ScriptUtils = Java.type("jdk.nashorn.api.scripting.ScriptUtils");
+obj = { valueOf: function() { print("hello"); return 43.3; } };
+
+// object to double
+print(ScriptUtils.convert(obj, java.lang.Number.class));
+
+// array to List
+var arr = [3, 44, 23, 33];
+var list = ScriptUtils.convert(arr, java.util.List.class);
+print(list instanceof java.util.List)
+print(list);
+
+// object to Map
+obj = { foo: 333, bar: 'hello'};
+var map = ScriptUtils.convert(obj, java.util.Map.class);
+print(map instanceof java.util.Map);
+for (m in map) {
+   print(m + " " + map[m]);
+}
+
+// object to String
+obj = { toString: function() { print("in toString"); return "foo" } };
+print(ScriptUtils.convert(obj, java.lang.String.class));
+
+// array to Java array
+var jarr = ScriptUtils.convert(arr, Java.type("int[]"));
+print(jarr instanceof Java.type("int[]"));
+for (i in jarr) {
+    print(jarr[i]);
+}
+
diff --git a/test/script/basic/convert.js.EXPECTED b/test/script/basic/convert.js.EXPECTED
new file mode 100644
index 00000000..e83faebd
--- /dev/null
+++ b/test/script/basic/convert.js.EXPECTED
@@ -0,0 +1,14 @@
+hello
+43.3
+true
+[3, 44, 23, 33]
+true
+foo 333
+bar hello
+in toString
+foo
+true
+3
+44
+23
+33
diff --git a/test/script/basic/eval.js b/test/script/basic/eval.js
index bd63068c..3d66c028 100644
--- a/test/script/basic/eval.js
+++ b/test/script/basic/eval.js
@@ -69,5 +69,5 @@ try {
     eval("print('hello)");
 } catch (e) {
     print("is syntax error? " + (e instanceof SyntaxError));
-    print(e.toString().replace(/\\/g, '/'));
+    printError(e);
 }
diff --git a/test/script/basic/eval.js.EXPECTED b/test/script/basic/eval.js.EXPECTED
index 3ab2f3da..7fe97ef6 100644
--- a/test/script/basic/eval.js.EXPECTED
+++ b/test/script/basic/eval.js.EXPECTED
@@ -10,6 +10,6 @@ eval.length 1
 100
 3300
 is syntax error? true
-SyntaxError: test/script/basic/eval.js#69<eval>:1:13 Missing close quote
+SyntaxError:69:Missing close quote
 print('hello)
              ^
diff --git a/test/script/basic/objects.js.EXPECTED b/test/script/basic/objects.js.EXPECTED
index a6bedc09..d59daa87 100644
--- a/test/script/basic/objects.js.EXPECTED
+++ b/test/script/basic/objects.js.EXPECTED
@@ -29,18 +29,18 @@ abc is writable? undefined
 abc is configurable? true
 abc is enumerable? true
 abc's value = undefined
-abc's get = abc() { return "abc"; }
+abc's get = get abc() { return "abc"; }
 abc's set = undefined
 xyz is writable? undefined
 xyz is configurable? true
 xyz is enumerable? true
 xyz's value = undefined
 xyz's get = undefined
-xyz's set = xyz(val) { print(val); }
+xyz's set = set xyz(val) { print(val); }
 hey is writable? undefined
 hey is configurable? true
 hey is enumerable? true
 hey's value = undefined
-hey's get = hey() { return "hey"; }
-hey's set = hey(val) { print(val); }
+hey's get = get hey() { return "hey"; }
+hey's set = set hey(val) { print(val); }
 undefined
diff --git a/test/script/error/JDK-8026039.js b/test/script/error/JDK-8026039.js
new file mode 100644
index 00000000..f37d9bdd
--- /dev/null
+++ b/test/script/error/JDK-8026039.js
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8026039: future strict names are allowed as function name and argument name of a strict function
+ *
+ * @test/compile-error
+ */
+
+function public() {"use strict"}
+
+function f(public) {"use strict"} 
diff --git a/test/script/error/JDK-8026039.js.EXPECTED b/test/script/error/JDK-8026039.js.EXPECTED
new file mode 100644
index 00000000..cde398f3
--- /dev/null
+++ b/test/script/error/JDK-8026039.js.EXPECTED
@@ -0,0 +1,9 @@
+test/script/error/JDK-8026039.js:30:9 "public" cannot be used as function name in strict mode
+function public() {"use strict"}
+         ^
+test/script/error/JDK-8026039.js:32:11 Expected ident but found public
+function f(public) {"use strict"} 
+           ^
+test/script/error/JDK-8026039.js:33:0 Expected } but found eof
+
+^
diff --git a/test/script/jfx.js b/test/script/jfx.js
new file mode 100644
index 00000000..5962b5d0
--- /dev/null
+++ b/test/script/jfx.js
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Base library for JavaFX canvas run by Nashorn testing.
+ * @subtest
+ * 
+ * 
+ */
+
+var System               = Java.type("java.lang.System");
+var AWTImage             = Java.type("org.jemmy.image.AWTImage");
+var PNGDecoder           = Java.type("org.jemmy.image.PNGDecoder");
+var JemmyFxRoot          = Java.type("org.jemmy.fx.Root");
+var AWTRobotCapturer     = Java.type("org.jemmy.image.AWTRobotCapturer");
+var ByWindowType         = Java.type("org.jemmy.fx.ByWindowType");
+var Scene                = Java.type("javafx.scene.Scene");
+var Stage                = Java.type("javafx.stage.Stage");
+var File                 = Java.type("java.io.File");
+var OSInfo               = Java.type("sun.awt.OSInfo");
+var OSType               = Java.type("sun.awt.OSInfo.OSType");
+var StringBuffer         = Java.type("java.lang.StringBuffer");
+var Paint                = Java.type("javafx.scene.paint.Paint");
+var Color                = Java.type("javafx.scene.paint.Color");
+var Image                = Java.type("javafx.scene.image.Image");
+var Canvas               = Java.type("javafx.scene.canvas.Canvas");
+var BorderPane           = Java.type("javafx.scene.layout.BorderPane");
+var StackPane            = Java.type("javafx.scene.layout.StackPane");
+var StrokeLineCap        = Java.type("javafx.scene.shape.StrokeLineCap");
+var Platform             = Java.type("javafx.application.Platform");
+var Runnable             = Java.type("java.lang.Runnable");
+var RunnableExtend       = Java.extend(Runnable);
+var AnimationTimer       = Java.type("javafx.animation.AnimationTimer");
+var AnimationTimerExtend = Java.extend(AnimationTimer);
+var Timer                = Java.type("java.util.Timer");
+var TimerTask            = Java.type("java.util.TimerTask");
+
+var TESTNAME = "test";
+var fsep = System.getProperty("file.separator");
+
+function checkImageAndExit() {
+    var raceTimer = new Timer(true);
+    var timerTask = new TimerTask() {
+        run: function run() {
+            var tmpdir = System.getProperty("java.io.tmpdir");
+            var timenow = (new Date()).getTime();
+            var scrShotTmp = tmpdir + fsep + "screenshot" + timenow +".png";
+            var goldenImageDir = __DIR__ + "jfx" + fsep + TESTNAME + fsep + "golden";
+            makeScreenShot(scrShotTmp);
+            var dupImg = isDuplicateImages(scrShotTmp, goldenImageDir);
+            (new File(scrShotTmp)).delete();
+            if (!dupImg) System.err.println("ERROR: screenshot does not match the golden image");
+            exit(0);
+        }
+    };
+    raceTimer.schedule(timerTask, 100);
+}
+
+function makeScreenShot(shootToImg) {
+   JemmyFxRoot.ROOT.getEnvironment().setImageCapturer(new AWTRobotCapturer());
+   var wrap = JemmyFxRoot.ROOT.lookup(new ByWindowType($STAGE.class)).lookup(Scene.class).wrap(0);
+   var imageJemmy = wrap.getScreenImage();
+   imageJemmy.save(shootToImg);
+}
+
+function isDuplicateImages(screenShot, goldenDir) {
+    var f1 = new File(screenShot);
+    var f2;
+    var sb = new StringBuffer(goldenDir);
+    if (OSInfo.getOSType() == OSType.WINDOWS) {
+        f2 = new File(sb.append(fsep + "windows.png").toString());
+    } else if (OSInfo.getOSType() == OSType.LINUX) {
+        f2 = new File(sb.append(fsep + "linux.png").toString());
+    } else if (OSInfo.getOSType() == OSType.MACOSX) {
+        f2 = new File(sb.append(fsep + "macosx.png").toString());
+    }
+    if (f1.exists() && f2.exists()) {
+        var image1 = new AWTImage(PNGDecoder.decode(f1.getAbsolutePath()));
+        var image2 = new AWTImage(PNGDecoder.decode(f2.getAbsolutePath()));
+        return image1.compareTo(image2) == null ? true : false;
+    }
+    return false;
+}
diff --git a/test/script/jfx/flyingimage.js b/test/script/jfx/flyingimage.js
new file mode 100644
index 00000000..844a0fc3
--- /dev/null
+++ b/test/script/jfx/flyingimage.js
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Testing JavaFX canvas run by Nashorn.
+ *
+ * @test/nocompare
+ * @run
+ * @fork
+ */
+
+TESTNAME = "flyingimage";
+
+var WIDTH = 800;
+var HEIGHT = 600;
+var canvas = new Canvas(WIDTH, HEIGHT);
+function fileToURL(file) {
+    return new File(file).toURI().toURL().toExternalForm();
+}
+var imageUrl = fileToURL(__DIR__ + "flyingimage/flyingimage.png");
+var img = new Image(imageUrl);
+var isFrameRendered = false;
+function renderFrame() {
+    var t = frame;
+    var gc = canvas.graphicsContext2D;
+    gc.setFill(Color.web("#cccccc"));
+    gc.fillRect(0, 0, WIDTH, HEIGHT);
+    gc.setStroke(Color.web("#000000"));
+    gc.setLineWidth(1);
+    gc.strokeRect(5, 5, WIDTH - 10, HEIGHT - 10);
+    var c = 200;
+    var msc= 0.5 * HEIGHT / img.height;
+    var sp0 = 0.003;
+    for (var h = 0; h < c; h++) {
+        gc.setTransform(1, 0, 0, 1, 0, 0);
+        var yh = h / (c - 1);
+        gc.translate((0.5 + Math.sin(t * sp0 + h * 0.1) / 3) * WIDTH, 25 + (HEIGHT * 3 / 4 - 40) * (yh * yh));
+        var sc = 30 / img.height + msc * yh * yh;
+        gc.rotate(90 * Math.sin(t * sp0 + h * 0.1 + Math.PI));
+        gc.scale(sc, sc);
+        gc.drawImage(img, -img.width / 2, -img.height / 2);
+    }
+    gc.setTransform(1, 0, 0, 1, 0, 0);
+    isFrameRendered = true;
+}
+var stack = new StackPane();
+var pane = new BorderPane();
+pane.setCenter(canvas);
+stack.getChildren().add(pane);
+$STAGE.scene = new Scene(stack);
+var frame = 0;
+var timer = new AnimationTimerExtend() {
+    handle: function handle(now) {
+        if (frame < 200) {
+            renderFrame();
+            frame++;
+        } else {
+            checkImageAndExit();        
+            timer.stop();
+        }
+    }
+};
+timer.start();
+ 
diff --git a/test/script/jfx/flyingimage/flyingimage.png b/test/script/jfx/flyingimage/flyingimage.png
new file mode 100644
index 00000000..afc44dd3
--- /dev/null
+++ b/test/script/jfx/flyingimage/flyingimage.png
diff --git a/test/script/jfx/flyingimage/golden/linux.png b/test/script/jfx/flyingimage/golden/linux.png
new file mode 100644
index 00000000..4a668a6d
--- /dev/null
+++ b/test/script/jfx/flyingimage/golden/linux.png
diff --git a/test/script/jfx/flyingimage/golden/macosx.png b/test/script/jfx/flyingimage/golden/macosx.png
new file mode 100644
index 00000000..ba72fe68
--- /dev/null
+++ b/test/script/jfx/flyingimage/golden/macosx.png
diff --git a/test/script/jfx/flyingimage/golden/windows.png b/test/script/jfx/flyingimage/golden/windows.png
new file mode 100644
index 00000000..e47ae4df
--- /dev/null
+++ b/test/script/jfx/flyingimage/golden/windows.png
diff --git a/test/script/jfx/kaleidoscope.js b/test/script/jfx/kaleidoscope.js
new file mode 100644
index 00000000..4430ff01
--- /dev/null
+++ b/test/script/jfx/kaleidoscope.js
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Testing JavaFX canvas run by Nashorn.
+ *
+ * @test/nocompare
+ * @run
+ * @fork
+ */
+
+TESTNAME = "kaleidoscope";
+        
+var WIDTH = 800;
+var HEIGHT = 600;
+var canvas = new Canvas(WIDTH, HEIGHT);
+var context = canvas.graphicsContext2D;
+
+var x,y;
+var p_x,p_y;
+var a=0;
+var b=0;
+var angle=Math.PI/180*8;
+var color=0;
+var limit1=Math.PI*1.5;
+var limit2=Math.PI*1.79;
+var c=new Array(6);
+var d=new Array(6);
+var r,e;
+var fade;
+var prv_x,prv_y,prv_x2,prv_y2;
+var isFrameRendered = false;
+
+function renderFrame() {
+	if (!isFrameRendered) {
+        a=0.2*angle;
+		b=0.7*angle;
+		r=0;
+		fade=32;
+		for(var i=0;i<6;i++)
+			{
+			c[i]=1.0/(i+1)/2;
+			d[i]=1.0/(i+1)/2;
+			}
+		radius=Math.round((WIDTH+HEIGHT)/8);
+		e=radius*0.2;
+		p_x=Math.round(WIDTH/2);
+		p_y=Math.round(HEIGHT/2);
+		x=(radius*c[0])*Math.cos(a*d[1])+(radius*c[2])*Math.sin(a*d[3])+(radius*c[4])*Math.sin(a*d[5]);
+		y=(radius*c[5])*Math.sin(a*d[4])+(radius*c[3])*Math.cos(a*d[2])+(radius*c[1])*Math.cos(a*d[0]);
+        isFrameRendered = true;
+    }
+    anim();
+}
+
+function anim() {
+	var a1=Math.cos(a*2);
+	var a2=Math.cos(a*4);
+	var a3=Math.cos(a);
+	var a4=Math.sin(a);
+	if(b>limit1&&b<limit2) {
+		r+=radius*0.02*a1;
+		prv_x=x;
+		prv_y=y;
+		x=prv_x2+r*a3;
+		y=prv_y2+r*a4;
+	} else {
+		prv_x=x;
+		prv_y=y;
+		prv_x2=x;
+		prv_y2=y;
+		x=(radius*c[0])*Math.cos(a*d[1])+(radius*c[2])*Math.sin(a*d[3])+(radius*c[4])*Math.sin(a*d[5]);
+		y=(radius*c[5])*Math.sin(a*d[4])+(radius*c[3])*Math.cos(a*d[2])+(radius*c[1])*Math.cos(a*d[0]);
+	}
+	var c3=16*Math.cos(a*10);
+	var c1=Math.floor(56*Math.cos(a*angle*4)+c3);
+	var c2=Math.floor(56*Math.sin(a*angle*4)-c3);
+	context.lineCap=StrokeLineCap.ROUND;
+	context.setStroke(Paint.valueOf('rgba('+(192+c1)+','+(192+c2)+','+(192-c1)+','+(0.01-0.005*-a1)+')'));
+	context.lineWidth=e*1.4+e*0.8*a3;
+	draw_line(p_x,p_y,prv_x,prv_y,x,y);
+	context.lineWidth=e+e*0.8*a3;
+	draw_line(p_x,p_y,prv_x,prv_y,x,y);
+	context.setStroke(Paint.valueOf('rgba('+(192+c1)+','+(192+c2)+','+(192-c1)+','+(0.06-0.03*-a1)+')'));
+	context.lineWidth=e*0.6+e*0.35*a3;
+	draw_line(p_x,p_y,prv_x,prv_y,x,y);
+	context.setStroke(Paint.valueOf('rgba(0,0,0,0.06)'));
+	context.lineWidth=e*0.4+e*0.225*a3;
+	draw_line(p_x,p_y,prv_x,prv_y,x,y);
+	context.setStroke(Paint.valueOf('rgba('+(192+c1)+','+(192+c2)+','+(192-c1)+','+(0.1-0.075*-a1)+')'));
+	context.lineWidth=e*0.2+e*0.1*a3;
+	draw_line(p_x,p_y,prv_x,prv_y,x,y);
+	context.setStroke(Paint.valueOf('rgba(255,255,255,0.4)'));
+	context.lineWidth=e*(0.1-0.05*-a2);
+	draw_line(p_x,p_y,prv_x,prv_y,x,y);
+	a+=angle*Math.cos(b);
+	b+=angle*0.1;
+}
+
+function draw_line(x,y,x1,y1,x2,y2) {
+	context.beginPath();
+	context.moveTo(x+x1,y+y1);
+	context.lineTo(x+x2,y+y2);
+	context.moveTo(x-x1,y+y1);
+	context.lineTo(x-x2,y+y2);
+	context.moveTo(x-x1,y-y1);
+	context.lineTo(x-x2,y-y2);
+	context.moveTo(x+x1,y-y1);
+	context.lineTo(x+x2,y-y2);
+	context.moveTo(x+y1,y+x1);
+	context.lineTo(x+y2,y+x2);
+	context.moveTo(x-y1,y+x1);
+	context.lineTo(x-y2,y+x2);
+	context.moveTo(x-y1,y-x1);
+	context.lineTo(x-y2,y-x2);
+	context.moveTo(x+y1,y-x1);
+	context.lineTo(x+y2,y-x2);
+	context.moveTo(x,y+x2);
+	context.lineTo(x,y+x1);
+	context.moveTo(x,y-x2);
+	context.lineTo(x,y-x1);
+	context.moveTo(x+x2,y);
+	context.lineTo(x+x1,y);
+	context.moveTo(x-x2,y);
+	context.lineTo(x-x1,y);
+	context.stroke();
+	context.closePath();
+}
+
+var stack = new StackPane();
+var pane = new BorderPane();
+pane.setCenter(canvas);
+stack.getChildren().add(pane);
+$STAGE.scene = new Scene(stack);
+var frame = 0;
+var timer = new AnimationTimerExtend() {
+    handle: function handle(now) {
+        if (frame < 800) {
+            renderFrame();
+            frame++;
+        } else {
+            checkImageAndExit();
+            timer.stop();
+        }
+    }
+};
+timer.start();
diff --git a/test/script/jfx/kaleidoscope/golden/linux.png b/test/script/jfx/kaleidoscope/golden/linux.png
new file mode 100644
index 00000000..4d7e81ad
--- /dev/null
+++ b/test/script/jfx/kaleidoscope/golden/linux.png
diff --git a/test/script/jfx/kaleidoscope/golden/macosx.png b/test/script/jfx/kaleidoscope/golden/macosx.png
new file mode 100644
index 00000000..64d9499b
--- /dev/null
+++ b/test/script/jfx/kaleidoscope/golden/macosx.png
diff --git a/test/script/jfx/kaleidoscope/golden/windows.png b/test/script/jfx/kaleidoscope/golden/windows.png
new file mode 100644
index 00000000..4d7e81ad
--- /dev/null
+++ b/test/script/jfx/kaleidoscope/golden/windows.png
diff --git a/test/script/jfx/spread.js b/test/script/jfx/spread.js
new file mode 100644
index 00000000..4a8f38ce
--- /dev/null
+++ b/test/script/jfx/spread.js
@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Testing JavaFX canvas run by Nashorn.
+ *
+ * @test/nocompare
+ * @run
+ * @fork
+ */
+ 
+TESTNAME = "spread";
+
+var WIDTH = 800;
+var HEIGHT = 600;
+var canvas = new Canvas(WIDTH, HEIGHT);
+var context = canvas.graphicsContext2D;
+
+/* "Spread" tech demo of canvas by Tom Theisen
+ *
+ * This will animate a sequence of branch structures in a canvas element.
+ * Each frame, a new direction is calculated, similar to the last frame.
+ */
+
+var start_width = 20;           // starting width of each branch
+var frame_time = 30;            // milliseconds per frame
+var straighten_factor = 0.95;   // value from 0 to 1, factor applied to direction_offset every frame
+var curviness = 0.2;            // amount of random direction change each frame
+
+var color_speed = 0.03;     // speed at which colors change when cycling is enabled
+var branch_shrink = 0.95;   // factor by which branches shrink every frame
+var min_width = 1;          // minimum WIDTH for branch, after which they are discontinued
+var branch_opacity = 0.4;   // opacity of lines drawn
+var branch_count = 3;       // branch count per tree
+var branch_bud_size = 0.5;  // ratio of original branch size at which branch will split
+var branch_bud_angle = 1;   // angle offset for split branch;
+
+var paper;                  // reference to graphics context
+var branches = Object();    // linked list of active branches
+var color_styles = [];      // pre-computed list of colors as styles. format: (r,g,b,a)    
+var direction_offset = 0;   // current direction offset in radians.  this is applied to all branches.
+var frame = 0;              // frame counter
+var timespent = 0;          // total time spent so far, used to calculate average frame render duration
+var frameratespan;          // html span element for updating performance number
+
+// preferences object, contains an attribute for each user setting
+var prefs = {
+    wrap: true,             // causes branches reaching edge of viewable area to appear on opposite side
+    fade: false,             // fade existing graphics on each frame
+    cycle: true,            // gradually change colors each frame
+    new_branch_frames: 20    // number of frames elapsed between each auto-generated tree
+};
+
+// create tree at the specified position with number of branches
+function create_tree(branches, start_width, position, branch_count) {
+    var angle_offset = Math.PI * 2 / branch_count;
+    for (var i = 0; i < branch_count; ++i) {
+        branch_add(branches, new Branch(position, angle_offset * i, start_width));
+    }
+}
+
+// add branch to collection
+function branch_add(branches, branch) {
+    branch.next = branches.next;
+    branches.next = branch;
+}
+
+// get the coordinates for the position of a new tree
+// use the center of the canvas
+function get_new_tree_center(width, height) {
+    return {
+        x: 0.5 * width, 
+        y: 0.5 * height 
+    };
+}
+
+// Branch constructor
+// position has x and y properties
+// direction is in radians
+function Branch(position, direction, width) {
+    this.x = position.x;
+    this.y = position.y;
+    this.width = width;
+    this.original_width = width;
+    this.direction = direction;
+}
+
+// update position, direction and width of a particular branch
+function branch_update(branches, branch, paper) {
+    paper.beginPath();
+    paper.lineWidth = branch.width;
+    paper.moveTo(branch.x, branch.y);
+    
+    branch.width *= branch_shrink;
+    branch.direction += direction_offset;
+    branch.x += Math.cos(branch.direction) * branch.width;
+    branch.y += Math.sin(branch.direction) * branch.width;
+    
+    paper.lineTo(branch.x, branch.y);
+    paper.stroke();
+    
+    if (prefs.wrap) wrap_branch(branch, WIDTH, HEIGHT);
+
+    if (branch.width < branch.original_width * branch_bud_size) {
+        branch.original_width *= branch_bud_size;
+        branch_add(branches, new Branch(branch, branch.direction + 1, branch.original_width));
+    }
+}
+
+function draw_frame() {
+    if (prefs.fade) {
+        paper.fillRect(0, 0, WIDTH, HEIGHT);
+    }
+
+    if (prefs.cycle) {
+        paper.setStroke(Paint.valueOf(color_styles[frame % color_styles.length]));
+    }
+
+    if (frame++ % prefs.new_branch_frames == 0) {
+        create_tree(branches, start_width, get_new_tree_center(WIDTH, HEIGHT), branch_count);
+    }
+    
+    direction_offset += (0.35 + (frame % 200) * 0.0015) * curviness - curviness / 2;
+    direction_offset *= straighten_factor;
+    
+    var branch = branches;
+    var prev_branch = branches;
+    while (branch = branch.next) {
+        branch_update(branches, branch, paper);
+        
+        if (branch.width < min_width) {
+            // remove branch from list
+            prev_branch.next = branch.next;
+        }
+        
+        prev_branch = branch;
+    }
+}
+
+// constrain branch position to visible area by "wrapping" from edge to edge
+function wrap_branch(branch, WIDTH, HEIGHT) {
+    branch.x = positive_mod(branch.x, WIDTH);
+    branch.y = positive_mod(branch.y, HEIGHT);
+}
+
+// for a < 0, b > 0, javascript returns a negative number for a % b
+// this is a variant of the % operator that adds b to the result in this case
+function positive_mod(a, b) {
+    // ECMA 262 11.5.3: Applying the % Operator 
+    // remainder operator does not convert operands to integers,
+    // although negative results are possible
+
+    return ((a % b) + b) % b;
+}
+
+// pre-compute color styles that will be used for color cycling
+function populate_colors(color_speed, color_styles, branch_opacity) {
+    // used in calculation of RGB values
+    var two_thirds_pi = Math.PI * 2 / 3;
+    var four_thirds_pi = Math.PI * 4 / 3;
+    var two_pi = Math.PI * 2;
+
+    // hue does represent hue, but not in the conventional HSL scheme
+    for(var hue = 0; hue < two_pi; hue += color_speed) {
+        var r = Math.floor(Math.sin(hue) * 128 + 128);
+        var g = Math.floor(Math.sin(hue + two_thirds_pi) * 128 + 128);
+        var b = Math.floor(Math.sin(hue + four_thirds_pi) * 128 + 128);
+        color = "rgba(" + [r, g, b, branch_opacity].join() + ")";
+
+        color_styles.push(color);
+    }
+}
+
+// apply initial settings to canvas object
+function setup_canvas() {
+    paper = canvas.graphicsContext2D;
+    paper.setFill(Paint.valueOf('rgb(0, 0, 0)'));
+    paper.fillRect(0, 0, WIDTH, HEIGHT);
+    paper.setFill(Paint.valueOf("rgba(0, 0, 0, 0.005)"));
+    paper.setStroke(Paint.valueOf("rgba(128, 128, 64, " + String(branch_opacity) + ")"));
+}
+
+populate_colors(color_speed, color_styles, branch_opacity);
+setup_canvas();
+
+var stack = new StackPane();
+var pane = new BorderPane();
+pane.setCenter(canvas);
+stack.getChildren().add(pane);
+$STAGE.scene = new Scene(stack);
+var timer = new AnimationTimerExtend() {
+    handle: function handle(now) {
+        if (frame < 200) {
+		    draw_frame();
+        } else {
+            checkImageAndExit();
+            timer.stop();
+        }
+    }
+};
+timer.start();
+
diff --git a/test/script/jfx/spread/golden/linux.png b/test/script/jfx/spread/golden/linux.png
new file mode 100644
index 00000000..fc535a47
--- /dev/null
+++ b/test/script/jfx/spread/golden/linux.png
diff --git a/test/script/jfx/spread/golden/macosx.png b/test/script/jfx/spread/golden/macosx.png
new file mode 100644
index 00000000..c2881623
--- /dev/null
+++ b/test/script/jfx/spread/golden/macosx.png
diff --git a/test/script/jfx/spread/golden/windows.png b/test/script/jfx/spread/golden/windows.png
new file mode 100644
index 00000000..fc535a47
--- /dev/null
+++ b/test/script/jfx/spread/golden/windows.png
diff --git a/test/script/sandbox/arrayclass.js b/test/script/sandbox/arrayclass.js
new file mode 100644
index 00000000..c29c86bd
--- /dev/null
+++ b/test/script/sandbox/arrayclass.js
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Try to access array class of a sensitive class like Unsafe.
+ *
+ * @test
+ * @security
+ * @run
+ */
+
+try {
+    var unsafeArr = Java.type("[Lsun.misc.Unsafe;");
+    fail("No Exception for [Lsun.misc.Unsafe;");
+} catch (e) {
+    print(e);
+}
diff --git a/test/script/sandbox/arrayclass.js.EXPECTED b/test/script/sandbox/arrayclass.js.EXPECTED
new file mode 100644
index 00000000..d66d77f0
--- /dev/null
+++ b/test/script/sandbox/arrayclass.js.EXPECTED
@@ -0,0 +1 @@
+java.lang.ClassNotFoundException: [Lsun.misc.Unsafe;
diff --git a/test/script/sandbox/loadcompat.js b/test/script/sandbox/loadcompat.js
index e99f67f2..f0338df7 100644
--- a/test/script/sandbox/loadcompat.js
+++ b/test/script/sandbox/loadcompat.js
@@ -48,3 +48,7 @@ if (typeof JavaAdapter != 'function') {
 if (typeof importPackage != 'function') {
     fail("importPackage function is missing in compatibility script");
 }
+
+if (typeof sync != 'function') {
+    fail("sync function is missing in compatibility script");
+}
diff --git a/test/script/trusted/JDK-8025629.js b/test/script/trusted/JDK-8025629.js
new file mode 100644
index 00000000..7dda8465
--- /dev/null
+++ b/test/script/trusted/JDK-8025629.js
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8025629: load function should support a way to load scripts from classpath
+ *
+ * @test
+ * @run
+ */
+
+load("classpath:jdk/nashorn/internal/runtime/resources/load_test.js")
+
+Assert.assertEquals(loadedFunc("hello"), "HELLO");
diff --git a/test/src/jdk/nashorn/api/javaaccess/ArrayConversionTest.java b/test/src/jdk/nashorn/api/javaaccess/ArrayConversionTest.java
new file mode 100644
index 00000000..4a1d8d5d
--- /dev/null
+++ b/test/src/jdk/nashorn/api/javaaccess/ArrayConversionTest.java
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.nashorn.api.javaaccess;
+
+import static org.testng.AssertJUnit.assertEquals;
+import static org.testng.AssertJUnit.assertFalse;
+import static org.testng.AssertJUnit.assertNull;
+import static org.testng.AssertJUnit.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+import javax.script.ScriptContext;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+import org.testng.TestNG;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+public class ArrayConversionTest {
+    private static ScriptEngine e = null;
+
+    public static void main(final String[] args) {
+        TestNG.main(args);
+    }
+
+    @BeforeClass
+    public static void setUpClass() throws ScriptException {
+        e = new ScriptEngineManager().getEngineByName("nashorn");
+    }
+
+    @AfterClass
+    public static void tearDownClass() {
+        e = null;
+    }
+
+    @Test
+    public void testIntArrays() throws ScriptException {
+        runTest("assertNullIntArray", "null");
+        runTest("assertEmptyIntArray", "[]");
+        runTest("assertSingle42IntArray", "[42]");
+        runTest("assertSingle42IntArray", "['42']");
+        runTest("assertIntArrayConversions", "[false, true, NaN, Infinity, -Infinity, 0.4, 0.6, null, undefined, [], {}, [1], [1, 2]]");
+    }
+
+    @Test
+    public void testIntIntArrays() throws ScriptException {
+        runTest("assertNullIntIntArray", "null");
+        runTest("assertEmptyIntIntArray", "[]");
+        runTest("assertSingleEmptyIntIntArray", "[[]]");
+        runTest("assertSingleNullIntIntArray", "[null]");
+        runTest("assertLargeIntIntArray", "[[false], [1], [2, 3], [4, 5, 6], ['7', {valueOf: function() { return 8 }}]]");
+    }
+
+    @Test
+    public void testObjectObjectArrays() throws ScriptException {
+        runTest("assertLargeObjectObjectArray", "[[false], [1], ['foo', 42.3], [{x: 17}]]");
+    }
+
+    @Test
+    public void testBooleanArrays() throws ScriptException {
+        runTest("assertBooleanArrayConversions", "[false, true, '', 'false', 0, 1, 0.4, 0.6, {}, [], [false], [true], NaN, Infinity, null, undefined]");
+    }
+
+    @Test
+    public void testArrayAmbiguity() throws ScriptException {
+        runTest("x", "'abc'");
+        runTest("x", "['foo', 'bar']");
+    }
+
+    @Test
+    public void testListArrays() throws ScriptException {
+        runTest("assertListArray", "[['foo', 'bar'], ['apple', 'orange']]");
+    }
+
+    @Test
+    public void testVarArgs() throws ScriptException {
+        // Sole NativeArray in vararg position becomes vararg array itself
+        runTest("assertVarArg_42_17", "[42, 17]");
+        // NativeArray in vararg position becomes an argument if there are more arguments
+        runTest("assertVarArg_array_17", "[42], 18");
+        // Only NativeArray is converted to vararg array, other objects (e.g. a function) aren't
+        runTest("assertVarArg_function", "function() { return 'Hello' }");
+    }
+
+    private static void runTest(final String testMethodName, final String argument) throws ScriptException {
+        e.eval("Java.type('" + ArrayConversionTest.class.getName() + "')." + testMethodName + "(" + argument + ")");
+    }
+
+    public static void assertNullIntArray(int[] array) {
+        assertNull(array);
+    }
+
+    public static void assertNullIntIntArray(int[][] array) {
+        assertNull(array);
+    }
+
+    public static void assertEmptyIntArray(int[] array) {
+        assertEquals(0, array.length);
+    }
+
+    public static void assertSingle42IntArray(int[] array) {
+        assertEquals(1, array.length);
+        assertEquals(42, array[0]);
+    }
+
+
+    public static void assertIntArrayConversions(int[] array) {
+        assertEquals(13, array.length);
+        assertEquals(0, array[0]); // false
+        assertEquals(1, array[1]); // true
+        assertEquals(0, array[2]); // NaN
+        assertEquals(0, array[3]); // Infinity
+        assertEquals(0, array[4]); // -Infinity
+        assertEquals(0, array[5]); // 0.4
+        assertEquals(0, array[6]); // 0.6 - floor, not round
+        assertEquals(0, array[7]); // null
+        assertEquals(0, array[8]); // undefined
+        assertEquals(0, array[9]); // []
+        assertEquals(0, array[10]); // {}
+        assertEquals(1, array[11]); // [1]
+        assertEquals(0, array[12]); // [1, 2]
+    }
+
+    public static void assertEmptyIntIntArray(int[][] array) {
+        assertEquals(0, array.length);
+    }
+
+    public static void assertSingleEmptyIntIntArray(int[][] array) {
+        assertEquals(1, array.length);
+        assertTrue(Arrays.equals(new int[0], array[0]));
+    }
+
+    public static void assertSingleNullIntIntArray(int[][] array) {
+        assertEquals(1, array.length);
+        assertNull(null, array[0]);
+    }
+
+    public static void assertLargeIntIntArray(int[][] array) {
+        assertEquals(5, array.length);
+        assertTrue(Arrays.equals(new int[] { 0 }, array[0]));
+        assertTrue(Arrays.equals(new int[] { 1 }, array[1]));
+        assertTrue(Arrays.equals(new int[] { 2, 3 }, array[2]));
+        assertTrue(Arrays.equals(new int[] { 4, 5, 6 }, array[3]));
+        assertTrue(Arrays.equals(new int[] { 7, 8 }, array[4]));
+    }
+
+    public static void assertLargeObjectObjectArray(Object[][] array) throws ScriptException {
+        assertEquals(4, array.length);
+        assertTrue(Arrays.equals(new Object[] { Boolean.FALSE }, array[0]));
+        assertTrue(Arrays.equals(new Object[] { 1 }, array[1]));
+        assertTrue(Arrays.equals(new Object[] { "foo", 42.3d }, array[2]));
+        assertEquals(1, array[3].length);
+        e.getBindings(ScriptContext.ENGINE_SCOPE).put("obj", array[3][0]);
+        assertEquals(17, e.eval("obj.x"));
+    }
+
+    public static void assertBooleanArrayConversions(boolean[] array) {
+        assertEquals(16, array.length);
+        assertFalse(array[0]); // false
+        assertTrue(array[1]); // true
+        assertFalse(array[2]); // ''
+        assertTrue(array[3]); // 'false' (yep, every non-empty string converts to true)
+        assertFalse(array[4]); // 0
+        assertTrue(array[5]); // 1
+        assertTrue(array[6]); // 0.4
+        assertTrue(array[7]); // 0.6
+        assertTrue(array[8]); // {}
+        assertTrue(array[9]); // []
+        assertTrue(array[10]); // [false]
+        assertTrue(array[11]); // [true]
+        assertFalse(array[12]); // NaN
+        assertTrue(array[13]); // Infinity
+        assertFalse(array[14]); // null
+        assertFalse(array[15]); // undefined
+    }
+
+    public static void assertListArray(List<?>[] array) {
+        assertEquals(2, array.length);
+        assertEquals(Arrays.asList("foo", "bar"), array[0]);
+        assertEquals(Arrays.asList("apple", "orange"), array[1]);
+    }
+
+    public static void assertVarArg_42_17(Object... args) throws ScriptException {
+        assertEquals(2, args.length);
+        assertEquals(42, ((Number)args[0]).intValue());
+        assertEquals(17, ((Number)args[1]).intValue());
+    }
+
+    public static void assertVarArg_array_17(Object... args) throws ScriptException {
+        assertEquals(2, args.length);
+        e.getBindings(ScriptContext.ENGINE_SCOPE).put("arr", args[0]);
+        assertTrue((Boolean)e.eval("arr instanceof Array && arr.length == 1 && arr[0] == 42"));
+        assertEquals(18, ((Number)args[1]).intValue());
+    }
+
+    public static void assertVarArg_function(Object... args) throws ScriptException {
+        assertEquals(1, args.length);
+        e.getBindings(ScriptContext.ENGINE_SCOPE).put("fn", args[0]);
+        assertEquals("Hello", e.eval("fn()"));
+    }
+
+
+
+    public static void x(String y) {
+        assertEquals("abc", y);
+    }
+    public static void x(String[] y) {
+        assertTrue(Arrays.equals(new String[] { "foo", "bar"}, y));
+    }
+}
diff --git a/test/src/jdk/nashorn/api/javaaccess/ConsStringTest.java b/test/src/jdk/nashorn/api/javaaccess/ConsStringTest.java
new file mode 100644
index 00000000..1eadfb77
--- /dev/null
+++ b/test/src/jdk/nashorn/api/javaaccess/ConsStringTest.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.nashorn.api.javaaccess;
+
+import static org.testng.AssertJUnit.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+import javax.script.Bindings;
+import javax.script.ScriptContext;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+import jdk.nashorn.api.scripting.JSObject;
+import org.testng.TestNG;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+public class ConsStringTest {
+    private static ScriptEngine e = null;
+
+    public static void main(final String[] args) {
+        TestNG.main(args);
+    }
+
+    @BeforeClass
+    public static void setUpClass() throws ScriptException {
+        e = new ScriptEngineManager().getEngineByName("nashorn");
+    }
+
+    @AfterClass
+    public static void tearDownClass() {
+        e = null;
+    }
+
+    @Test
+    public void testConsStringFlattening() throws ScriptException {
+        final Bindings b = e.getBindings(ScriptContext.ENGINE_SCOPE);
+        final Map<Object, Object> m = new HashMap<>();
+        b.put("m", m);
+        e.eval("var x = 'f'; x += 'oo'; var y = 'b'; y += 'ar'; m.put(x, y)");
+        assertEquals("bar", m.get("foo"));
+    }
+
+    @Test
+    public void testConsStringFromMirror() throws ScriptException {
+        final Bindings b = e.getBindings(ScriptContext.ENGINE_SCOPE);
+        final Map<Object, Object> m = new HashMap<>();
+        e.eval("var x = 'f'; x += 'oo'; var obj = {x: x};");
+        assertEquals("foo", ((JSObject)b.get("obj")).getMember("x"));
+    }
+
+    @Test
+    public void testArrayConsString() throws ScriptException {
+        final Bindings b = e.getBindings(ScriptContext.ENGINE_SCOPE);
+        final ArrayHolder h = new ArrayHolder();
+        b.put("h", h);
+        e.eval("var x = 'f'; x += 'oo'; h.array = [x];");
+        assertEquals(1, h.array.length);
+        assertEquals("foo", h.array[0]);
+    }
+
+
+    public static class ArrayHolder {
+        private Object[] array;
+
+        public void setArray(Object[] array) {
+            this.array = array;
+        }
+
+        public Object[] getArray() {
+            return array;
+        }
+    }
+}
diff --git a/test/src/jdk/nashorn/api/javaaccess/MethodAccessTest.java b/test/src/jdk/nashorn/api/javaaccess/MethodAccessTest.java
index 14207b7d..4be66b81 100644
--- a/test/src/jdk/nashorn/api/javaaccess/MethodAccessTest.java
+++ b/test/src/jdk/nashorn/api/javaaccess/MethodAccessTest.java
@@ -412,7 +412,7 @@ public class MethodAccessTest {
 
     @Test
     public void accessMethodMixedWithEllipsis() throws ScriptException {
-        assertArrayEquals(new Object[] { "Hello", 10, true, -100500, 80 }, (Object[])e.eval("o.methodMixedWithEllipsis('Hello', 10, true, -100500,80.0);"));
+        assertArrayEquals(new Object[] { "Hello", 10, true, -100500, 80d }, (Object[])e.eval("o.methodMixedWithEllipsis('Hello', 10, true, -100500,80.0);"));
         assertArrayEquals(new Object[] { "Nashorn", 15 }, (Object[])e.eval("o.methodMixedWithEllipsis('Nashorn',15);"));
     }
 
@@ -431,8 +431,8 @@ public class MethodAccessTest {
 
     @Test
     public void accessMethodDoubleVSintOverloaded() throws ScriptException {
-        assertEquals("int", e.eval("o.overloadedMethodDoubleVSint(0.0);"));
-        assertEquals("int", e.eval("o.overloadedMethodDoubleVSint(1000.0);"));
+        assertEquals("double", e.eval("o.overloadedMethodDoubleVSint(0.0);"));
+        assertEquals("double", e.eval("o.overloadedMethodDoubleVSint(1000.0);"));
         assertEquals("double", e.eval("o.overloadedMethodDoubleVSint(0.01);"));
         assertEquals("double", e.eval("o.overloadedMethodDoubleVSint(100.02);"));
         assertEquals("int", e.eval("o.overloadedMethodDoubleVSint(0);"));
diff --git a/test/src/jdk/nashorn/api/scripting/PluggableJSObjectTest.java b/test/src/jdk/nashorn/api/scripting/PluggableJSObjectTest.java
index acb57164..a574e6f6 100644
--- a/test/src/jdk/nashorn/api/scripting/PluggableJSObjectTest.java
+++ b/test/src/jdk/nashorn/api/scripting/PluggableJSObjectTest.java
@@ -46,7 +46,7 @@ import org.testng.annotations.Test;
  * JSObject implementations.
  */
 public class PluggableJSObjectTest {
-    public static class MapWrapperObject extends JSObject {
+    public static class MapWrapperObject extends AbstractJSObject {
         private final HashMap<String, Object> map = new LinkedHashMap<>();
 
         public HashMap<String, Object> getMap() {
@@ -109,7 +109,7 @@ public class PluggableJSObjectTest {
         }
     }
 
-    public static class BufferObject extends JSObject {
+    public static class BufferObject extends AbstractJSObject {
         private final IntBuffer buf;
 
         public BufferObject(int size) {
@@ -170,7 +170,7 @@ public class PluggableJSObjectTest {
         }
     }
 
-    public static class Adder extends JSObject {
+    public static class Adder extends AbstractJSObject {
         @Override
         public Object call(Object thiz, Object... args) {
             double res = 0.0;
@@ -202,7 +202,7 @@ public class PluggableJSObjectTest {
         }
     }
 
-    public static class Factory extends JSObject {
+    public static class Factory extends AbstractJSObject {
         @Override
         public Object newObject(Object... args) {
             return new HashMap<Object, Object>();
diff --git a/test/src/jdk/nashorn/api/scripting/ScriptEngineTest.java b/test/src/jdk/nashorn/api/scripting/ScriptEngineTest.java
index 99207de0..55aacb34 100644
--- a/test/src/jdk/nashorn/api/scripting/ScriptEngineTest.java
+++ b/test/src/jdk/nashorn/api/scripting/ScriptEngineTest.java
@@ -523,6 +523,18 @@ public class ScriptEngineTest {
         assertEquals(sw.toString(), println("34 true hello"));
     }
 
+    @Test
+    public void scriptObjectAutoConversionTest() throws ScriptException {
+        final ScriptEngineManager m = new ScriptEngineManager();
+        final ScriptEngine e = m.getEngineByName("nashorn");
+        e.eval("obj = { foo: 'hello' }");
+        e.put("Window", e.eval("Packages.jdk.nashorn.api.scripting.Window"));
+        assertEquals(e.eval("Window.funcJSObject(obj)"), "hello");
+        assertEquals(e.eval("Window.funcScriptObjectMirror(obj)"), "hello");
+        assertEquals(e.eval("Window.funcMap(obj)"), "hello");
+        assertEquals(e.eval("Window.funcJSObject(obj)"), "hello");
+    }
+
     private static final String LINE_SEPARATOR = System.getProperty("line.separator");
 
     // Returns String that would be the result of calling PrintWriter.println
diff --git a/test/src/jdk/nashorn/api/scripting/ScriptObjectMirrorTest.java b/test/src/jdk/nashorn/api/scripting/ScriptObjectMirrorTest.java
index c7b40c63..544f4ea7 100644
--- a/test/src/jdk/nashorn/api/scripting/ScriptObjectMirrorTest.java
+++ b/test/src/jdk/nashorn/api/scripting/ScriptObjectMirrorTest.java
@@ -26,6 +26,7 @@
 package jdk.nashorn.api.scripting;
 
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineManager;
@@ -129,7 +130,7 @@ public class ScriptObjectMirrorTest {
         final ScriptEngine e = m.getEngineByName("nashorn");
         try {
             e.eval("var obj = { '1': 'world', func: function() { return this.bar; }, bar: 'hello' }");
-            JSObject obj = (JSObject) e.get("obj");
+            ScriptObjectMirror obj = (ScriptObjectMirror) e.get("obj");
 
             // try basic get on existing properties
             if (!obj.getMember("bar").equals("hello")) {
@@ -227,4 +228,28 @@ public class ScriptObjectMirrorTest {
         final Object newObj = ((ScriptObjectMirror)e2obj.getMember("foo")).newObject();
         assertTrue(newObj instanceof ScriptObjectMirror);
     }
+
+    @Test
+    public void conversionTest() throws ScriptException {
+        final ScriptEngineManager m = new ScriptEngineManager();
+        final ScriptEngine e = m.getEngineByName("nashorn");
+        final ScriptObjectMirror arr = (ScriptObjectMirror)e.eval("[33, 45, 23]");
+        final int[] intArr = arr.to(int[].class);
+        assertEquals(intArr[0], 33);
+        assertEquals(intArr[1], 45);
+        assertEquals(intArr[2], 23);
+
+        final List<?> list = arr.to(List.class);
+        assertEquals(list.get(0), 33);
+        assertEquals(list.get(1), 45);
+        assertEquals(list.get(2), 23);
+
+        ScriptObjectMirror obj = (ScriptObjectMirror)e.eval(
+            "({ valueOf: function() { return 42 } })");
+        assertEquals(Double.valueOf(42.0), obj.to(Double.class));
+
+        obj = (ScriptObjectMirror)e.eval(
+            "({ toString: function() { return 'foo' } })");
+        assertEquals("foo", obj.to(String.class));
+    }
 }
diff --git a/test/src/jdk/nashorn/api/scripting/Window.java b/test/src/jdk/nashorn/api/scripting/Window.java
index bde23941..510c5dae 100644
--- a/test/src/jdk/nashorn/api/scripting/Window.java
+++ b/test/src/jdk/nashorn/api/scripting/Window.java
@@ -25,6 +25,9 @@
 
 package jdk.nashorn.api.scripting;
 
+import java.util.Map;
+import javax.script.Bindings;
+
 public class Window {
 
     private String location = "http://localhost:8080/window";
@@ -63,4 +66,20 @@ public class Window {
         System.out.println("window.setTimeout: " + delay + ", code: " + code);
         return 0;
     }
+
+    public static Object funcJSObject(final JSObject jsobj) {
+        return jsobj.getMember("foo");
+    }
+
+    public static Object funcScriptObjectMirror(final ScriptObjectMirror sobj) {
+        return sobj.get("foo");
+    }
+
+    public static Object funcMap(final Map<?,?> map) {
+        return map.get("foo");
+    }
+
+    public static Object funcBindings(final Bindings bindings) {
+        return bindings.get("foo");
+    }
 }
diff --git a/src/jdk/nashorn/internal/runtime/ScriptObjectListAdapter.java b/test/src/jdk/nashorn/internal/runtime/resources/load_test.js
index 4fe2dc40..21672d61 100644
--- a/src/jdk/nashorn/internal/runtime/ScriptObjectListAdapter.java
+++ b/test/src/jdk/nashorn/internal/runtime/resources/load_test.js
@@ -23,32 +23,6 @@
  * questions.
  */
 
-package jdk.nashorn.internal.runtime;
-
-/**
- * A ListAdapter that can wrap a ScriptObject.
- */
-public final class ScriptObjectListAdapter extends ListAdapter {
-    /**
-     * Creates a new list wrapper for the specified ScriptObject.
-     * @param obj script the object to wrap
-     */
-    public ScriptObjectListAdapter(final ScriptObject obj) {
-        super(obj);
-    }
-
-    @Override
-    public int size() {
-        return JSType.toInt32(((ScriptObject)obj).getLength());
-    }
-
-    @Override
-    protected Object getAt(int index) {
-        return ((ScriptObject)obj).get(index);
-    }
-
-    @Override
-    protected void setAt(int index, Object element) {
-        ((ScriptObject)obj).set(index, element, false);
-    }
+function loadedFunc(arg) {
+    return arg.toUpperCase();
 }
author	Edward Nevill edward.nevill@linaro.org <Edward Nevill edward.nevill@linaro.org>	2013-12-23 13:00:33 +0000
committer	Edward Nevill edward.nevill@linaro.org <Edward Nevill edward.nevill@linaro.org>	2013-12-23 13:00:33 +0000
commit	d9c7bed615253d4d273f81faf9859f8f10f7cac9 (patch)
tree	6917c0df28cda99c2bc4d23239045fa29a3f4858
parent	db1032c1f2e2b6e679849ae4c8b0e7dd7605fc53 (diff)
parent	7f54e85e6d7f3767c4ad17e5e336f0562657435d (diff)