Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 57a7762336eea989764e026e58f1e3a5e845f652
https://github.com/WebKit/WebKit/commit/57a7762336eea989764e026e58f1e3a5e845f652
Author: Yusuke Suzuki <[email protected]>
Date: 2024-01-14 (Sun, 14 Jan 2024)
Changed paths:
A JSTests/microbenchmarks/string-number-mul-int32.js
A JSTests/microbenchmarks/string-number-mul.js
M Source/JavaScriptCore/dfg/DFGFixupPhase.cpp
Log Message:
-----------
[JSC] String and Number multiplication should be optimized
https://bugs.webkit.org/show_bug.cgi?id=267507
rdar://120930167
Reviewed by Justin Michaud.
We observed that `string * number` pattern in the wild. This patch optimizes it
in DFG / FTL layer
by converting ValueMul(String, Number) to ArithMul(ToNumber(String), Number).
ToT Patched
string-number-mul-int32 15.3303+-0.0371 ^ 12.2364+-0.0633
^ definitely 1.2528x faster
string-number-mul 16.4883+-0.0731 ^ 13.9290+-0.0953
^ definitely 1.1837x faster
* JSTests/microbenchmarks/string-number-mul.js: Added.
(test):
* Source/JavaScriptCore/dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
Canonical link: https://commits.webkit.org/273024@main
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