Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: d4c4d4bd1fcfb8bfee7f7a51333f8bebf5e0e369
https://github.com/WebKit/WebKit/commit/d4c4d4bd1fcfb8bfee7f7a51333f8bebf5e0e369
Author: Yusuke Suzuki <[email protected]>
Date: 2024-04-06 (Sat, 06 Apr 2024)
Changed paths:
M Source/JavaScriptCore/bytecode/StructureSet.h
M Source/JavaScriptCore/dfg/DFGArrayMode.cpp
M Source/JavaScriptCore/dfg/DFGArrayMode.h
M Source/JavaScriptCore/dfg/DFGFixupPhase.cpp
M Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp
M Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
Log Message:
-----------
[JSC] Add Array::OriginalArray DFG::ArrayMode, which can handle both CoW
array and non-CoW array
https://bugs.webkit.org/show_bug.cgi?id=272259
rdar://125997646
Reviewed by Alexey Shvayka.
This extends DFG::ArrayMode and introduces OriginalArray. And we rename old
OriginalArray to OriginalNonCopyOnWriteArray.
OriginalArray can handle both CoW and non-CoW original arrays. The purpose of
this is telling DFG / FTL that we still see original arrays.
This allows some of optimizations because it makes clobberising rules more
precise.
* Source/JavaScriptCore/bytecode/StructureSet.h:
* Source/JavaScriptCore/dfg/DFGArrayMode.cpp:
(JSC::DFG::ArrayMode::originalArrayStructures const):
(JSC::DFG::ArrayMode::alreadyChecked const):
(JSC::DFG::arrayClassToString):
(JSC::DFG::ArrayMode::originalArrayStructure const): Deleted.
* Source/JavaScriptCore/dfg/DFGArrayMode.h:
(JSC::DFG::ArrayMode::withProfile const):
(JSC::DFG::ArrayMode::isJSArray const):
(JSC::DFG::ArrayMode::isJSArrayWithOriginalStructure const):
(JSC::DFG::ArrayMode::arrayModesWithIndexingShapes const):
* Source/JavaScriptCore/dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::checkArray):
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::jumpSlowForUnwantedArrayMode):
* Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp:
(JSC::FTL::DFG::LowerDFGToB3::compileCompareStrictEq):
Canonical link: https://commits.webkit.org/277174@main
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