Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: ec89a5102de07389efc7b31a277de2c8df6bf77b
https://github.com/WebKit/WebKit/commit/ec89a5102de07389efc7b31a277de2c8df6bf77b
Author: Sosuke Suzuki <[email protected]>
Date: 2025-07-25 (Fri, 25 Jul 2025)
Changed paths:
A JSTests/microbenchmarks/regexp-prototype-search-no-strength-reduction.js
A JSTests/stress/regexp-prototype-search-strength-reduction.js
M Source/JavaScriptCore/dfg/DFGStrengthReductionPhase.cpp
Log Message:
-----------
[JSC] Fold `RegExp#@@search` at DFG StrengthReduction phase
https://bugs.webkit.org/show_bug.cgi?id=295147
Reviewed by Yusuke Suzuki.
JSC handles RegExp#exec, RegExp#test and RegExp#match in the DFG
StrengthReduction
phase for constant folding optimization.
This patch changes to exted the same optimization to the `RegExpSearch` node
that was
added in https://commits.webkit.org/296443@main.
TipOfTree
Patched
regexp-prototype-search-no-strength-reduction
93.2792+-1.0921 ?
93.4058+-0.9316 ?
regexp-prototype-search-short-string 32.7441+-1.0533 ^
5.0470+-0.0546 ^ definitely 6.4878x faster
regexp-prototype-search-complex-pattern 54.5425+-2.5405 ^
6.8118+-0.1985 ^ definitely 8.0071x faster
regexp-prototype-search-basic 119.5020+-1.8881 ^
11.0128+-0.3870 ^ definitely 10.8512x faster
regexp-prototype-search-observable-side-effects2
0.1547+-0.0286 ?
0.1674+-0.0140 ? might be 1.0821x slower
regexp-prototype-search-anchor 59.0436+-3.4802 ^
6.9537+-0.2744 ^ definitely 8.4909x faster
regexp-prototype-search-observable-side-effects
0.2566+-0.0065 ?
0.2590+-0.0054 ?
* JSTests/microbenchmarks/regexp-prototype-search-no-strength-reduction.js:
Added.
(shouldBe):
* JSTests/stress/regexp-prototype-search-strength-reduction.js: Added.
(shouldBe):
* Source/JavaScriptCore/dfg/DFGStrengthReductionPhase.cpp:
(JSC::DFG::StrengthReductionPhase::handleNode):
Canonical link: https://commits.webkit.org/297859@main
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