Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 101f7c7836eaa3e6c56d8a6fe1d8812efbb8959f
https://github.com/WebKit/WebKit/commit/101f7c7836eaa3e6c56d8a6fe1d8812efbb8959f
Author: Yusuke Suzuki <[email protected]>
Date: 2025-07-21 (Mon, 21 Jul 2025)
Changed paths:
A JSTests/stress/dfg-compare-less-eq.js
M Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h
Log Message:
-----------
Abstract Interpreter incorrectly optimized CompareLessEq into Constant True
when two oprands are undefined.
https://bugs.webkit.org/show_bug.cgi?id=296270
rdar://156361256
Reviewed by Keith Miller.
null <= null and undefined <= undefined are different results (because
ToNumber(null) is 0 while ToNumber(undefined) is NaN). We should not
fold them to true in DFG AI.
* JSTests/stress/dfg-compare-less-eq.js: Added.
(shouldBe):
(opt):
* Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
Canonical link: https://commits.webkit.org/297726@main
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