Also test -O0 for OpenACC C, C++ offloading test cases

	libgomp/
	* testsuite/libgomp.oacc-c++/c++.exp: Set up torture testing, use
	gcc-dg-runtest.
	* testsuite/libgomp.oacc-c/c.exp: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc-on-device-2.c: Specify
	-fno-builtin-acc_on_device instead of -O0.
	* testsuite/libgomp.oacc-c-c++-common/acc-on-device.c: Skip for
	-O0.
	* testsuite/libgomp.oacc-c-c++-common/loop-auto-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-dim-default.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-g-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-g-2.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-gwv-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-g-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-gwv-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-v-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-v-2.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-w-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-red-w-2.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-v-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-w-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/loop-wv-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/routine-g-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/routine-gwv-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/routine-v-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/routine-w-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/routine-wv-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-alias-ipa-pta-2.c:
	Don't specify -O2.
	* testsuite/libgomp.oacc-c-c++-common/kernels-alias-ipa-pta-3.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-alias-ipa-pta.c:
	Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@234471 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 23 insertions, 6 deletions

diff --git a/libgomp/testsuite/libgomp.oacc-c/c.exp b/libgomp/testsuite/libgomp.oacc-c/c.exp
index 5020e6a0691..b509a109815 100644
--- a/libgomp/testsuite/libgomp.oacc-c/c.exp
+++ b/libgomp/testsuite/libgomp.oacc-c/c.exp
@@ -13,14 +13,11 @@ if [info exists lang_include_flags] then {
 
 load_lib libgomp-dg.exp
 load_gcc_lib gcc-dg.exp
-
-# If a testcase doesn't have special options, use these.
-if ![info exists DEFAULT_CFLAGS] then {
-    set DEFAULT_CFLAGS "-O2"
-}
+load_gcc_lib torture-options.exp
 
 # Initialize dg.
 dg-init
+torture-init
 
 # Turn on OpenACC.
 lappend ALWAYS_CFLAGS "additional_flags=-fopenacc"
@@ -67,8 +64,28 @@ foreach offload_target_openacc $offload_targets_s_openacc {
 
     setenv ACC_DEVICE_TYPE $offload_target_openacc
 
-    dg-runtest $tests "$tagopt" $DEFAULT_CFLAGS
+    # To get better test coverage for device-specific code that is only
+    # ever used in offloading configurations, we'd like more thorough
+    # testing for test cases that deal with offloading, which most of all
+    # OpenACC test cases are.  We enable torture testing, but limit it to
+    # -O0 and -O2 only, to avoid testing times exploding too much, under
+    # the assumption that between -O0 and -O[something] there is the
+    # biggest difference in the overall structure of the generated code.
+    switch $offload_target_openacc {
+	host {
+	    set-torture-options [list \
+				     { -O2 } ]
+	}
+	default {
+	    set-torture-options [list \
+				     { -O0 } \
+				     { -O2 } ]
+	}
+    }
+
+    gcc-dg-runtest $tests "$tagopt" ""
 }
 
 # All done.
+torture-finish
 dg-finish