Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 561a9d8fc5e3e6526deb2b77923ed72786bbae99
https://github.com/WebKit/WebKit/commit/561a9d8fc5e3e6526deb2b77923ed72786bbae99
Author: Yijia Huang <hyjo...@gmail.com>
Date: 2024-12-11 (Wed, 11 Dec 2024)
Changed paths:
A JSTests/stress/atomics-is-lock-free.js
M Source/JavaScriptCore/dfg/DFGFixupPhase.cpp
M Source/JavaScriptCore/dfg/DFGNodeType.h
Log Message:
-----------
AtomicsIsLockFree should not be eliminated in DCE in JavaScriptCore
https://bugs.webkit.org/show_bug.cgi?id=284245
rdar://141233504
Reviewed by Keith Miller and Yusuke Suzuki.
AtomicsIsLockFree should be eliminated only if it has no side effects.
Here we do the elimination when its argument is not int32 use.
* JSTests/stress/atomics-is-lock-free.js: Added.
(f2):
(f1):
* Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
* Source/JavaScriptCore/dfg/DFGNodeType.h:
Canonical link: https://commits.webkit.org/287673@main
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