[webkit-changes] [WebKit/WebKit] 92c9fa: [JSC] Add DFG NewArrayWithConstantSize
Yusuke Suzuki
noreply at github.com
Thu Jun 15 11:48:25 PDT 2023
Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 92c9fa599ca65afe7f4e1e394d11aaa5e313a128
https://github.com/WebKit/WebKit/commit/92c9fa599ca65afe7f4e1e394d11aaa5e313a128
Author: Yusuke Suzuki <ysuzuki at apple.com>
Date: 2023-06-15 (Thu, 15 Jun 2023)
Changed paths:
M Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h
M Source/JavaScriptCore/dfg/DFGBackwardsPropagationPhase.cpp
M Source/JavaScriptCore/dfg/DFGClobberize.h
M Source/JavaScriptCore/dfg/DFGConstantFoldingPhase.cpp
M Source/JavaScriptCore/dfg/DFGDoesGC.cpp
M Source/JavaScriptCore/dfg/DFGFixupPhase.cpp
M Source/JavaScriptCore/dfg/DFGMayExit.cpp
M Source/JavaScriptCore/dfg/DFGNode.cpp
M Source/JavaScriptCore/dfg/DFGNode.h
M Source/JavaScriptCore/dfg/DFGNodeType.h
M Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp
M Source/JavaScriptCore/dfg/DFGSafeToExecute.h
M Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp
M Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h
M Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp
M Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp
M Source/JavaScriptCore/dfg/DFGStoreBarrierInsertionPhase.cpp
M Source/JavaScriptCore/ftl/FTLCapabilities.cpp
M Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
Log Message:
-----------
[JSC] Add DFG NewArrayWithConstantSize
https://bugs.webkit.org/show_bug.cgi?id=258112
rdar://110820431
Reviewed by Alexey Shvayka.
This adds NewArrayWithConstantSize, which is `new Array(constant)`.
It offers,
1. More precise structure information in DFG AI.
2. CSE for array length.
And they can remove some unnecessary CheckStructure and CheckInBounds.
* Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
* Source/JavaScriptCore/dfg/DFGBackwardsPropagationPhase.cpp:
(JSC::DFG::BackwardsPropagationPhase::propagate):
* Source/JavaScriptCore/dfg/DFGClobberize.h:
(JSC::DFG::clobberize):
* Source/JavaScriptCore/dfg/DFGConstantFoldingPhase.cpp:
(JSC::DFG::ConstantFoldingPhase::foldConstants):
* Source/JavaScriptCore/dfg/DFGDoesGC.cpp:
(JSC::DFG::doesGC):
* Source/JavaScriptCore/dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
* Source/JavaScriptCore/dfg/DFGMayExit.cpp:
* Source/JavaScriptCore/dfg/DFGNode.cpp:
(JSC::DFG::Node::convertToNewArrayWithConstantSize):
* Source/JavaScriptCore/dfg/DFGNode.h:
(JSC::DFG::Node::hasNewArraySize):
(JSC::DFG::Node::newArraySize):
(JSC::DFG::Node::hasIndexingType):
* Source/JavaScriptCore/dfg/DFGNodeType.h:
* Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:
* Source/JavaScriptCore/dfg/DFGSafeToExecute.h:
(JSC::DFG::safeToExecute):
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h:
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* Source/JavaScriptCore/dfg/DFGStoreBarrierInsertionPhase.cpp:
* Source/JavaScriptCore/ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp:
(JSC::FTL::DFG::LowerDFGToB3::compileNode):
(JSC::FTL::DFG::LowerDFGToB3::compileNewArrayWithConstantSize):
Canonical link: https://commits.webkit.org/265205@main
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