diff options
Diffstat (limited to 'src/jdk/nashorn/internal/codegen/FinalizeTypes.java')
| -rw-r--r-- | src/jdk/nashorn/internal/codegen/FinalizeTypes.java | 212 |
1 files changed, 90 insertions, 122 deletions
diff --git a/src/jdk/nashorn/internal/codegen/FinalizeTypes.java b/src/jdk/nashorn/internal/codegen/FinalizeTypes.java index cd185240..5f6a63dc 100644 --- a/src/jdk/nashorn/internal/codegen/FinalizeTypes.java +++ b/src/jdk/nashorn/internal/codegen/FinalizeTypes.java @@ -25,7 +25,12 @@ 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.Iterator; import java.util.List; import jdk.nashorn.internal.codegen.types.Type; import jdk.nashorn.internal.ir.AccessNode; @@ -33,10 +38,8 @@ 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.CallNode.EvalArgs; import jdk.nashorn.internal.ir.CaseNode; import jdk.nashorn.internal.ir.CatchNode; -import jdk.nashorn.internal.ir.DoWhileNode; import jdk.nashorn.internal.ir.ExecuteNode; import jdk.nashorn.internal.ir.ForNode; import jdk.nashorn.internal.ir.FunctionNode; @@ -85,18 +88,11 @@ final class FinalizeTypes extends NodeOperatorVisitor { private static final DebugLogger LOG = new DebugLogger("finalize"); - private final LexicalContext lexicalContext = new LexicalContext(); - FinalizeTypes() { } @Override public Node leaveCallNode(final CallNode callNode) { - final EvalArgs evalArgs = callNode.getEvalArgs(); - if (evalArgs != null) { - evalArgs.setCode(evalArgs.getCode().accept(this)); - } - // AccessSpecializer - call return type may change the access for this location final Node function = callNode.getFunction(); if (function instanceof FunctionNode) { @@ -133,8 +129,7 @@ final class FinalizeTypes extends NodeOperatorVisitor { @Override public Node leaveNEW(final UnaryNode unaryNode) { assert unaryNode.getSymbol() != null && unaryNode.getSymbol().getSymbolType().isObject(); - ((CallNode)unaryNode.rhs()).setIsNew(); - return unaryNode; + return unaryNode.setRHS(((CallNode)unaryNode.rhs()).setIsNew()); } @Override @@ -254,7 +249,7 @@ final class FinalizeTypes extends NodeOperatorVisitor { @Override public Node leaveCOMMALEFT(final BinaryNode binaryNode) { assert binaryNode.getSymbol() != null; - final BinaryNode newBinaryNode = (BinaryNode)binaryNode.setRHS(discard(binaryNode.rhs())); + 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 propagateType(newBinaryNode, newBinaryNode.lhs().getType()); @@ -354,41 +349,30 @@ final class FinalizeTypes extends NodeOperatorVisitor { } @Override - public Node enterBlock(final Block block) { - lexicalContext.push(block); + public boolean enterBlock(final Block block) { updateSymbols(block); - return block; + return true; } + /* @Override - public Node leaveBlock(Block block) { - lexicalContext.pop(block); - return super.leaveBlock(block); - } + public Node leaveBlock(final Block block) { + final LexicalContext lc = getLexicalContext(); + return block;//.setFlag(lc, lc.getFlags(block)); + }*/ @Override public Node leaveCatchNode(final CatchNode catchNode) { final Node exceptionCondition = catchNode.getExceptionCondition(); if (exceptionCondition != null) { - catchNode.setExceptionCondition(convert(exceptionCondition, Type.BOOLEAN)); + return catchNode.setExceptionCondition(convert(exceptionCondition, Type.BOOLEAN)); } return catchNode; } @Override - public Node enterDoWhileNode(final DoWhileNode doWhileNode) { - return enterWhileNode(doWhileNode); - } - - @Override - public Node leaveDoWhileNode(final DoWhileNode doWhileNode) { - return leaveWhileNode(doWhileNode); - } - - @Override public Node leaveExecuteNode(final ExecuteNode executeNode) { - executeNode.setExpression(discard(executeNode.getExpression())); - return executeNode; + return executeNode.setExpression(discard(executeNode.getExpression())); } @Override @@ -397,69 +381,54 @@ final class FinalizeTypes extends NodeOperatorVisitor { final Node test = forNode.getTest(); final Node modify = forNode.getModify(); - if (forNode.isForIn()) { - forNode.setModify(convert(forNode.getModify(), Type.OBJECT)); // NASHORN-400 - return forNode; - } + final LexicalContext lc = getLexicalContext(); - if (init != null) { - forNode.setInit(discard(init)); - } - - if (test != null) { - forNode.setTest(convert(test, Type.BOOLEAN)); - } else { - assert forNode.hasGoto() : "forNode " + forNode + " needs goto and is missing it in " + getCurrentFunctionNode(); - } - - if (modify != null) { - forNode.setModify(discard(modify)); + 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 " + getLexicalContext().getCurrentFunction(); - return forNode; + 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 Node enterFunctionNode(final FunctionNode functionNode) { + public boolean enterFunctionNode(final FunctionNode functionNode) { if (functionNode.isLazy()) { - return null; + return false; } - lexicalContext.push(functionNode); // If the function doesn't need a callee, we ensure its __callee__ symbol doesn't get a slot. We can't do // this earlier, as access to scoped variables, self symbol, etc. in previous phases can all trigger the // need for the callee. if (!functionNode.needsCallee()) { - functionNode.getCalleeNode().getSymbol().setNeedsSlot(false); + functionNode.compilerConstant(CALLEE).setNeedsSlot(false); } // Similar reasoning applies to __scope__ symbol: if the function doesn't need either parent scope or its // own scope, we ensure it doesn't get a slot, but we can't determine whether it needs a scope earlier than // this phase. - if (!(functionNode.needsScope() || functionNode.needsParentScope())) { - functionNode.getScopeNode().getSymbol().setNeedsSlot(false); + if (!(functionNode.getBody().needsScope() || functionNode.needsParentScope())) { + functionNode.compilerConstant(SCOPE).setNeedsSlot(false); } - updateSymbols(functionNode); - functionNode.setState(CompilationState.FINALIZED); - - return functionNode; + return true; } @Override - public Node leaveFunctionNode(FunctionNode functionNode) { - lexicalContext.pop(functionNode); - return super.leaveFunctionNode(functionNode); + public Node leaveFunctionNode(final FunctionNode functionNode) { + return functionNode.setState(getLexicalContext(), CompilationState.FINALIZED); } @Override public Node leaveIfNode(final IfNode ifNode) { - ifNode.setTest(convert(ifNode.getTest(), Type.BOOLEAN)); - return ifNode; + return ifNode.setTest(convert(ifNode.getTest(), Type.BOOLEAN)); } @SuppressWarnings("rawtypes") @Override - public Node enterLiteralNode(final LiteralNode literalNode) { + public boolean enterLiteralNode(final LiteralNode literalNode) { if (literalNode instanceof ArrayLiteralNode) { final ArrayLiteralNode arrayLiteralNode = (ArrayLiteralNode)literalNode; final Node[] array = arrayLiteralNode.getValue(); @@ -473,14 +442,14 @@ final class FinalizeTypes extends NodeOperatorVisitor { } } - return null; + return false; } @Override public Node leaveReturnNode(final ReturnNode returnNode) { final Node expr = returnNode.getExpression(); if (expr != null) { - returnNode.setExpression(convert(expr, getCurrentFunctionNode().getReturnType())); + return returnNode.setExpression(convert(expr, getLexicalContext().getCurrentFunction().getReturnType())); } return returnNode; } @@ -496,21 +465,24 @@ final class FinalizeTypes extends NodeOperatorVisitor { @Override public Node leaveSwitchNode(final SwitchNode switchNode) { + final boolean allInteger = switchNode.getTag().getSymbolType().isInteger(); + + if (allInteger) { + return switchNode; + } + final Node expression = switchNode.getExpression(); final List<CaseNode> cases = switchNode.getCases(); - final boolean allInteger = switchNode.getTag().getSymbolType().isInteger(); - - if (!allInteger) { - switchNode.setExpression(convert(expression, Type.OBJECT)); - for (final CaseNode caseNode : cases) { - final Node test = caseNode.getTest(); - if (test != null) { - caseNode.setTest(convert(test, Type.OBJECT)); - } - } + final List<CaseNode> newCases = new ArrayList<>(); + + for (final CaseNode caseNode : cases) { + final Node test = caseNode.getTest(); + newCases.add(test != null ? caseNode.setTest(convert(test, Type.OBJECT)) : caseNode); } - return switchNode; + return switchNode. + setExpression(getLexicalContext(), convert(expression, Type.OBJECT)). + setCases(getLexicalContext(), newCases); } @Override @@ -520,8 +492,7 @@ final class FinalizeTypes extends NodeOperatorVisitor { @Override public Node leaveThrowNode(final ThrowNode throwNode) { - throwNode.setExpression(convert(throwNode.getExpression(), Type.OBJECT)); - return throwNode; + return throwNode.setExpression(convert(throwNode.getExpression(), Type.OBJECT)); } @Override @@ -544,23 +515,24 @@ final class FinalizeTypes extends NodeOperatorVisitor { public Node leaveWhileNode(final WhileNode whileNode) { final Node test = whileNode.getTest(); if (test != null) { - whileNode.setTest(convert(test, Type.BOOLEAN)); + return whileNode.setTest(getLexicalContext(), convert(test, Type.BOOLEAN)); } return whileNode; } @Override public Node leaveWithNode(final WithNode withNode) { - withNode.setExpression(convert(withNode.getExpression(), Type.OBJECT)); - return withNode; + return withNode.setExpression(getLexicalContext(), convert(withNode.getExpression(), Type.OBJECT)); } private static void updateSymbolsLog(final FunctionNode functionNode, final Symbol symbol, final boolean loseSlot) { - if (!symbol.isScope()) { - LOG.finest("updateSymbols: " + symbol + " => scope, because all vars in " + functionNode.getName() + " are in scope"); - } - if (loseSlot && symbol.hasSlot()) { - LOG.finest("updateSymbols: " + symbol + " => no slot, because all vars in " + functionNode.getName() + " are in scope"); + if (LOG.isEnabled()) { + if (!symbol.isScope()) { + LOG.finest("updateSymbols: ", symbol, " => scope, because all vars in ", functionNode.getName(), " are in scope"); + } + if (loseSlot && symbol.hasSlot()) { + LOG.finest("updateSymbols: ", symbol, " => no slot, because all vars in ", functionNode.getName(), " are in scope"); + } } } @@ -574,29 +546,28 @@ final class FinalizeTypes extends NodeOperatorVisitor { return; // nothing to do } - final FunctionNode functionNode = lexicalContext.getFunction(block); - assert !(block instanceof FunctionNode) || functionNode == block; + final LexicalContext lc = getLexicalContext(); + final FunctionNode functionNode = lc.getFunction(block); + final boolean allVarsInScope = functionNode.allVarsInScope(); + final boolean isVarArg = functionNode.isVarArg(); - final List<Symbol> symbols = block.getFrame().getSymbols(); - final boolean allVarsInScope = functionNode.allVarsInScope(); - final boolean isVarArg = functionNode.isVarArg(); - - for (final Symbol symbol : symbols) { - if (symbol.isInternal() || symbol.isThis()) { + for (final Iterator<Symbol> iter = block.symbolIterator(); iter.hasNext(); ) { + final Symbol symbol = iter.next(); + if (symbol.isInternal() || symbol.isThis() || symbol.isTemp()) { continue; } if (symbol.isVar()) { if (allVarsInScope || symbol.isScope()) { updateSymbolsLog(functionNode, symbol, true); - symbol.setIsScope(); + Symbol.setSymbolIsScope(lc, symbol); symbol.setNeedsSlot(false); } else { assert symbol.hasSlot() : symbol + " should have a slot only, no scope"; } } else if (symbol.isParam() && (allVarsInScope || isVarArg || symbol.isScope())) { updateSymbolsLog(functionNode, symbol, isVarArg); - symbol.setIsScope(); + Symbol.setSymbolIsScope(lc, symbol); symbol.setNeedsSlot(!isVarArg); } } @@ -636,11 +607,7 @@ final class FinalizeTypes extends NodeOperatorVisitor { //fallthru default: if (newRuntimeNode || widest.isObject()) { - final RuntimeNode runtimeNode = new RuntimeNode(binaryNode, request); - if (finalized) { - runtimeNode.setIsFinal(); - } - return runtimeNode; + return new RuntimeNode(binaryNode, request).setIsFinal(finalized); } break; } @@ -667,7 +634,8 @@ final class FinalizeTypes extends NodeOperatorVisitor { } private Node leaveBinary(final BinaryNode binaryNode, final Type lhsType, final Type rhsType) { - return binaryNode.setLHS(convert(binaryNode.lhs(), lhsType)).setRHS(convert(binaryNode.rhs(), rhsType)); + Node b = binaryNode.setLHS(convert(binaryNode.lhs(), lhsType)).setRHS(convert(binaryNode.rhs(), rhsType)); + return b; } /** @@ -683,28 +651,28 @@ final class FinalizeTypes extends NodeOperatorVisitor { node.accept(new NodeVisitor() { private void setCanBePrimitive(final Symbol symbol) { - LOG.info("*** can be primitive symbol " + symbol + " " + Debug.id(symbol)); + LOG.info("*** can be primitive symbol ", symbol, " ", Debug.id(symbol)); symbol.setCanBePrimitive(to); } @Override - public Node enterIdentNode(final IdentNode identNode) { + public boolean enterIdentNode(final IdentNode identNode) { if (!exclude.contains(identNode)) { setCanBePrimitive(identNode.getSymbol()); } - return null; + return false; } @Override - public Node enterAccessNode(final AccessNode accessNode) { + public boolean enterAccessNode(final AccessNode accessNode) { setCanBePrimitive(accessNode.getProperty().getSymbol()); - return null; + return false; } @Override - public Node enterIndexNode(final IndexNode indexNode) { + 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 indexNode; + return true; } }); } @@ -785,12 +753,12 @@ final class FinalizeTypes extends NodeOperatorVisitor { private static <T extends Node> 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); + 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); + LOG.info("Type override for lhs in '", node, "' => ", to); return ((TypeOverride<T>)node).setType(to); } @@ -814,8 +782,8 @@ final class FinalizeTypes extends NodeOperatorVisitor { private Node convert(final Node 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 + " has no symbol!"; - assert node.tokenType() != TokenType.CONVERT : "assert convert in convert " + node + " in " + getCurrentFunctionNode(); + assert node.getSymbol() != null : "node " + node + " " + node.getClass() + " has no symbol! " + getLexicalContext().getCurrentFunction() + " " + node.getSource(); + assert node.tokenType() != TokenType.CONVERT : "assert convert in convert " + node + " in " + getLexicalContext().getCurrentFunction(); final Type from = node.getType(); @@ -842,23 +810,23 @@ final class FinalizeTypes extends NodeOperatorVisitor { resultNode = new UnaryNode(node.getSource(), Token.recast(node.getToken(), TokenType.CONVERT), node); } - LOG.info("CONVERT('" + node + "', " + to + ") => '" + resultNode + "'"); + LOG.info("CONVERT('", node, "', ", to, ") => '", resultNode, "'"); + final LexicalContext lc = getLexicalContext(); //This is the only place in this file that can create new temporaries //FinalizeTypes may not introduce ANY node that is not a conversion. - getCurrentFunctionNode().newTemporary(getCurrentBlock().getFrame(), to, resultNode); - resultNode.copyTerminalFlags(node); + lc.getCurrentFunction().ensureSymbol(lc.getCurrentBlock(), to, resultNode); + + assert !node.isTerminal(); return resultNode; } private static Node discard(final Node node) { - node.setDiscard(true); - if (node.getSymbol() != null) { final Node discard = new UnaryNode(node.getSource(), Token.recast(node.getToken(), TokenType.DISCARD), node); //discard never has a symbol in the discard node - then it would be a nop - discard.copyTerminalFlags(node); + assert !node.isTerminal(); return discard; } @@ -883,7 +851,7 @@ final class FinalizeTypes extends NodeOperatorVisitor { final Symbol symbol = node.getSymbol(); if (symbol.isTemp()) { symbol.setTypeOverride(to); - LOG.info("Type override for temporary in '" + node + "' => " + to); + LOG.info("Type override for temporary in '", node, "' => ", to); } } |