Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 2d4d8ad1273ab2997fa0736c0db51123256d2db9
https://github.com/WebKit/WebKit/commit/2d4d8ad1273ab2997fa0736c0db51123256d2db9
Author: Justin Michaud <[email protected]>
Date: 2025-11-25 (Tue, 25 Nov 2025)
Changed paths:
A JSTests/microbenchmarks/for-of-vs-for-each-2.js
A JSTests/microbenchmarks/for-of-vs-for-each.js
M Source/JavaScriptCore/dfg/DFGIntegerRangeOptimizationPhase.cpp
M Source/JavaScriptCore/dfg/DFGNode.h
Log Message:
-----------
Make Integer Range Optimization see through for of pattern
https://bugs.webkit.org/show_bug.cgi?id=302192
Reviewed by Yijia Huang.
We emit:
Branch(ArithBitOr(BooleanToNumber(Compare*), BooleanToNumber(Compare*)))
in the bytecode parser for iterator_next. This patch lets IRO see through
this and extract the cases, at least for the false side of the branch.
This removes the checks in the provided microbenchmarks.
* JSTests/microbenchmarks/for-of-vs-for-each-2.js: Added.
(console.consoleStub.testForOf):
(noInline.testForOf.testForEach):
(runTest):
(noInline.runTest):
* JSTests/microbenchmarks/for-of-vs-for-each.js: Added.
(console.consoleStub.testForOf):
(noInline.testForOf.testForEach):
(5.runTest):
(noInline.runTest):
* Source/JavaScriptCore/dfg/DFGIntegerRangeOptimizationPhase.cpp:
* Source/JavaScriptCore/dfg/DFGNode.h:
(JSC::DFG::Node::isBinaryUseKind):
Canonical link: https://commits.webkit.org/303542@main
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