Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: b68f6434c4f5badc76a61b2c1a778a86855a87e3
https://github.com/WebKit/WebKit/commit/b68f6434c4f5badc76a61b2c1a778a86855a87e3
Author: Sosuke Suzuki <[email protected]>
Date: 2025-02-04 (Tue, 04 Feb 2025)
Changed paths:
A JSTests/microbenchmarks/array-prototype-indexOf-string-16.js
A JSTests/microbenchmarks/array-prototype-indexOf-string.js
A JSTests/stress/array-prototype-indexOf-string-16.js
A JSTests/stress/array-prototype-indexOf-string-8.js
A JSTests/stress/array-prototype-indexOf-string-obj.js
M Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp
M Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
Log Message:
-----------
[JSC] Optimize 8bit string array search by `Array#indexOf` in DFG/FTL
https://bugs.webkit.org/show_bug.cgi?id=286244
Reviewed by Yusuke Suzuki.
The DFG and FTL for `Array#indexOf` calls `operationArrayIndexOfString`
to search string from array of strings. However, for arrays of 8-bit
strings, this can be more optimized.
TipOfTree Patched
array-prototype-indexOf-string 80.1512+-1.4965 ^
49.4774+-1.6997 ^ definitely 1.6200x faster
array-prototype-indexOf-string-16 84.6494+-0.0597
83.0947+-2.7614 might be 1.0187x faster
* JSTests/microbenchmarks/array-prototype-indexOf-string-16.js: Added.
* JSTests/microbenchmarks/array-prototype-indexOf-string.js: Added.
* JSTests/stress/array-prototype-indexOf-string-16.js: Added.
(shouldBe):
(test1):
(test2):
* JSTests/stress/array-prototype-indexOf-string-8.js: Added.
(shouldBe):
(test1):
(test2):
* JSTests/stress/array-prototype-indexOf-string-obj.js: Added.
(shouldBe):
(test1):
(test2):
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:
* Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp:
(JSC::FTL::DFG::LowerDFGToB3::compileArrayIndexOf):
(JSC::FTL::DFG::LowerDFGToB3::compileCompareStrictEq):
Canonical link: https://commits.webkit.org/289780@main
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