DFG should support activations and nested functions
authorfpizlo@apple.com <fpizlo@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Sat, 25 Feb 2012 23:05:38 +0000 (23:05 +0000)
committerfpizlo@apple.com <fpizlo@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Sat, 25 Feb 2012 23:05:38 +0000 (23:05 +0000)
commitc42f02e068fd6adc63b6eb8467343af6959c3897
tree298f8ff86827cc900bf7becc3b332c36e9050d0a
parent0cca4172a6fe1d754a33183f52870186a40fb918
DFG should support activations and nested functions
https://bugs.webkit.org/show_bug.cgi?id=79554

Reviewed by Oliver Hunt.

Wrote the simplest possible implementation of activations. Big speed-up on
code that uses activations, no speed-up on major benchmarks (SunSpider, V8,
Kraken) because they do not appear to have sufficient coverage over code
that uses activations.

* bytecode/PredictedType.cpp:
(JSC::predictionToString):
(JSC::predictionFromValue):
* bytecode/PredictedType.h:
(JSC):
(JSC::isEmptyPrediction):
* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::execute):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::ByteCodeParser):
(ByteCodeParser):
(JSC::DFG::ByteCodeParser::parseBlock):
(JSC::DFG::ByteCodeParser::buildOperandMapsIfNecessary):
(JSC::DFG::ByteCodeParser::InlineStackEntry::InlineStackEntry):
(JSC::DFG::ByteCodeParser::parse):
* dfg/DFGCapabilities.h:
(JSC::DFG::canCompileOpcode):
(JSC::DFG::canInlineOpcode):
* dfg/DFGGraph.h:
(JSC::DFG::Graph::needsActivation):
* dfg/DFGNode.h:
(DFG):
(JSC::DFG::Node::storageAccessDataIndex):
(Node):
(JSC::DFG::Node::hasFunctionDeclIndex):
(JSC::DFG::Node::functionDeclIndex):
(JSC::DFG::Node::hasFunctionExprIndex):
(JSC::DFG::Node::functionExprIndex):
* dfg/DFGOperations.cpp:
* dfg/DFGOperations.h:
* dfg/DFGPredictionPropagationPhase.cpp:
(JSC::DFG::PredictionPropagationPhase::propagate):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileNewFunctionNoCheck):
(DFG):
(JSC::DFG::SpeculativeJIT::compileNewFunctionExpression):
* dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::callOperation):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@108908 268f45cc-cd09-0410-ab3c-d52691b4dbfc
15 files changed:
Source/JavaScriptCore/ChangeLog
Source/JavaScriptCore/bytecode/PredictedType.cpp
Source/JavaScriptCore/bytecode/PredictedType.h
Source/JavaScriptCore/dfg/DFGAbstractState.cpp
Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp
Source/JavaScriptCore/dfg/DFGCapabilities.h
Source/JavaScriptCore/dfg/DFGGraph.h
Source/JavaScriptCore/dfg/DFGNode.h
Source/JavaScriptCore/dfg/DFGOperations.cpp
Source/JavaScriptCore/dfg/DFGOperations.h
Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp
Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp
Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h
Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp
Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp