Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: ecb783a152dc3747a2da39408d7d9a07a41a8815
https://github.com/WebKit/WebKit/commit/ecb783a152dc3747a2da39408d7d9a07a41a8815
Author: Yusuke Suzuki <[email protected]>
Date: 2026-04-30 (Thu, 30 Apr 2026)
Changed paths:
A JSTests/microbenchmarks/bigint64-array-last-index-of-large.js
A JSTests/microbenchmarks/bigint64-array-last-index-of-medium.js
A JSTests/microbenchmarks/bigint64-array-last-index-of-small.js
A JSTests/microbenchmarks/biguint64-array-last-index-of-large.js
A JSTests/microbenchmarks/biguint64-array-last-index-of-medium.js
A JSTests/microbenchmarks/biguint64-array-last-index-of-small.js
A JSTests/microbenchmarks/float32-array-last-index-of-large.js
A JSTests/microbenchmarks/float32-array-last-index-of-medium.js
A JSTests/microbenchmarks/float32-array-last-index-of-small.js
A JSTests/microbenchmarks/float64-array-last-index-of-large.js
A JSTests/microbenchmarks/float64-array-last-index-of-medium.js
A JSTests/microbenchmarks/float64-array-last-index-of-small.js
A JSTests/microbenchmarks/int16-array-last-index-of-large.js
A JSTests/microbenchmarks/int16-array-last-index-of-medium.js
A JSTests/microbenchmarks/int16-array-last-index-of-small.js
A JSTests/microbenchmarks/int32-array-last-index-of-large.js
A JSTests/microbenchmarks/int32-array-last-index-of-medium.js
A JSTests/microbenchmarks/int32-array-last-index-of-small.js
A JSTests/microbenchmarks/int8-array-last-index-of-large.js
A JSTests/microbenchmarks/int8-array-last-index-of-medium.js
A JSTests/microbenchmarks/int8-array-last-index-of-small.js
A JSTests/microbenchmarks/typed-array-lastIndexOf-empty.js
A JSTests/microbenchmarks/uint16-array-last-index-of-large.js
A JSTests/microbenchmarks/uint16-array-last-index-of-medium.js
A JSTests/microbenchmarks/uint16-array-last-index-of-small.js
A JSTests/microbenchmarks/uint32-array-last-index-of-large.js
A JSTests/microbenchmarks/uint32-array-last-index-of-medium.js
A JSTests/microbenchmarks/uint32-array-last-index-of-small.js
A JSTests/microbenchmarks/uint8-array-last-index-of-large.js
A JSTests/microbenchmarks/uint8-array-last-index-of-medium.js
A JSTests/microbenchmarks/uint8-array-last-index-of-small.js
A JSTests/microbenchmarks/uint8-clamped-array-last-index-of-large.js
A JSTests/microbenchmarks/uint8-clamped-array-last-index-of-medium.js
A JSTests/microbenchmarks/uint8-clamped-array-last-index-of-small.js
M Source/JavaScriptCore/runtime/JSGenericTypedArrayViewPrototypeFunctions.h
M Source/WTF/wtf/SIMDHelpers.h
M Source/WTF/wtf/text/StringCommon.h
Log Message:
-----------
[JSC] Add TypedArray#lastIndexOf optimization
https://bugs.webkit.org/show_bug.cgi?id=313707
rdar://175904377
Reviewed by Yijia Huang.
We added reverseFind families for fp numbers, and then use them in
TypedArray#lastIndexOf. This is well-aligned to TypedArray#indexOf optimization.
ToT
Patched
uint32-array-last-index-of-medium 0.3030+-0.0352
0.2276+-0.0522 might be 1.3315x faster
int16-array-last-index-of-medium 11.2249+-0.3554 ^
2.0253+-0.0690 ^ definitely 5.5424x faster
int32-array-last-index-of-large 567.2856+-0.6059 ^
165.9670+-4.8270 ^ definitely 3.4181x faster
int16-array-last-index-of-large 566.6340+-1.3116 ^
85.4925+-1.0674 ^ definitely 6.6279x faster
biguint64-array-last-index-of-large 746.6768+-1.1196 ^
420.6055+-4.1806 ^ definitely 1.7752x faster
int32-array-last-index-of-medium 0.3292+-0.0401 ^
0.2260+-0.0451 ^ definitely 1.4567x faster
int32-array-last-index-of-small 0.1973+-0.0383
0.1863+-0.0417 might be 1.0590x faster
biguint64-array-last-index-of-small 0.1907+-0.0457 ?
0.2070+-0.0160 ? might be 1.0854x slower
float32-array-last-index-of-medium 0.3240+-0.0146 ^
0.2488+-0.0345 ^ definitely 1.3023x faster
uint16-array-last-index-of-medium 11.1243+-0.5143 ^
1.9501+-0.0818 ^ definitely 5.7045x faster
int16-array-last-index-of-small 0.3291+-0.0211 ?
0.3650+-0.0216 ? might be 1.1091x slower
uint8-array-last-index-of-medium 11.1230+-0.0383 ^
1.4262+-0.0577 ^ definitely 7.7990x faster
float64-array-last-index-of-small 0.2112+-0.0060 ^
0.1971+-0.0043 ^ definitely 1.0718x faster
float64-array-last-index-of-large 575.3604+-4.8133 ^
234.7345+-1.9510 ^ definitely 2.4511x faster
float32-array-last-index-of-large 571.8342+-5.7791 ^
119.8253+-1.2086 ^ definitely 4.7722x faster
uint16-array-last-index-of-large 569.0002+-7.9021 ^
85.2038+-0.6646 ^ definitely 6.6781x faster
uint8-clamped-array-last-index-of-medium 11.2017+-0.2085 ^
1.4171+-0.0261 ^ definitely 7.9046x faster
uint32-array-last-index-of-large 567.3750+-1.1759 ^
163.4587+-0.4689 ^ definitely 3.4711x faster
biguint64-array-last-index-of-medium 0.3577+-0.0311 ^
0.2677+-0.0400 ^ definitely 1.3361x faster
uint16-array-last-index-of-small 0.3617+-0.0602
0.3481+-0.0461 might be 1.0391x faster
float32-array-last-index-of-small 0.1862+-0.0287 ?
0.2023+-0.0404 ? might be 1.0862x slower
uint32-array-last-index-of-small 0.1996+-0.0387
0.1899+-0.0338 might be 1.0508x faster
int8-array-last-index-of-small 0.3448+-0.0281
0.3239+-0.0240 might be 1.0646x faster
int8-array-last-index-of-medium 11.0264+-0.3901 ^
1.4152+-0.0692 ^ definitely 7.7913x faster
int8-array-last-index-of-large 566.6000+-3.0132 ^
53.8640+-0.7808 ^ definitely 10.5191x faster
uint8-array-last-index-of-small 0.3303+-0.0488 ?
0.3346+-0.0158 ? might be 1.0129x slower
bigint64-array-last-index-of-small 0.1859+-0.0314
0.1855+-0.0272
bigint64-array-last-index-of-medium 0.3650+-0.0139 ^
0.2827+-0.0444 ^ definitely 1.2910x faster
uint8-array-last-index-of-large 566.7697+-3.2210 ^
53.5338+-0.3509 ^ definitely 10.5871x faster
bigint64-array-last-index-of-large 746.7503+-0.8889 ^
417.3829+-1.1634 ^ definitely 1.7891x faster
uint8-clamped-array-last-index-of-small 0.3332+-0.0515 ?
0.3569+-0.0373 ? might be 1.0713x slower
float64-array-last-index-of-medium 0.3312+-0.0255 ^
0.2532+-0.0395 ^ definitely 1.3080x faster
uint8-clamped-array-last-index-of-large 565.7103+-0.6944 ^
55.5995+-2.3503 ^ definitely 10.1747x faster
Tests: JSTests/microbenchmarks/bigint64-array-last-index-of-large.js
JSTests/microbenchmarks/bigint64-array-last-index-of-medium.js
JSTests/microbenchmarks/bigint64-array-last-index-of-small.js
JSTests/microbenchmarks/biguint64-array-last-index-of-large.js
JSTests/microbenchmarks/biguint64-array-last-index-of-medium.js
JSTests/microbenchmarks/biguint64-array-last-index-of-small.js
JSTests/microbenchmarks/float32-array-last-index-of-large.js
JSTests/microbenchmarks/float32-array-last-index-of-medium.js
JSTests/microbenchmarks/float32-array-last-index-of-small.js
JSTests/microbenchmarks/float64-array-last-index-of-large.js
JSTests/microbenchmarks/float64-array-last-index-of-medium.js
JSTests/microbenchmarks/float64-array-last-index-of-small.js
JSTests/microbenchmarks/int16-array-last-index-of-large.js
JSTests/microbenchmarks/int16-array-last-index-of-medium.js
JSTests/microbenchmarks/int16-array-last-index-of-small.js
JSTests/microbenchmarks/int32-array-last-index-of-large.js
JSTests/microbenchmarks/int32-array-last-index-of-medium.js
JSTests/microbenchmarks/int32-array-last-index-of-small.js
JSTests/microbenchmarks/int8-array-last-index-of-large.js
JSTests/microbenchmarks/int8-array-last-index-of-medium.js
JSTests/microbenchmarks/int8-array-last-index-of-small.js
JSTests/microbenchmarks/typed-array-lastIndexOf-empty.js
JSTests/microbenchmarks/uint16-array-last-index-of-large.js
JSTests/microbenchmarks/uint16-array-last-index-of-medium.js
JSTests/microbenchmarks/uint16-array-last-index-of-small.js
JSTests/microbenchmarks/uint32-array-last-index-of-large.js
JSTests/microbenchmarks/uint32-array-last-index-of-medium.js
JSTests/microbenchmarks/uint32-array-last-index-of-small.js
JSTests/microbenchmarks/uint8-array-last-index-of-large.js
JSTests/microbenchmarks/uint8-array-last-index-of-medium.js
JSTests/microbenchmarks/uint8-array-last-index-of-small.js
JSTests/microbenchmarks/uint8-clamped-array-last-index-of-large.js
JSTests/microbenchmarks/uint8-clamped-array-last-index-of-medium.js
JSTests/microbenchmarks/uint8-clamped-array-last-index-of-small.js
* JSTests/microbenchmarks/bigint64-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/bigint64-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/bigint64-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/biguint64-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/biguint64-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/biguint64-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/float32-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/float32-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/float32-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/float64-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/float64-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/float64-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/int16-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/int16-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/int16-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/int32-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/int32-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/int32-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/int8-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/int8-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/int8-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/typed-array-lastIndexOf-empty.js: Added.
* JSTests/microbenchmarks/uint16-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/uint16-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/uint16-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/uint32-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/uint32-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/uint32-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/uint8-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/uint8-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/uint8-array-last-index-of-small.js: Added.
(test):
* JSTests/microbenchmarks/uint8-clamped-array-last-index-of-large.js: Added.
(test):
* JSTests/microbenchmarks/uint8-clamped-array-last-index-of-medium.js: Added.
(test):
* JSTests/microbenchmarks/uint8-clamped-array-last-index-of-small.js: Added.
(test):
* Source/JavaScriptCore/runtime/JSGenericTypedArrayViewPrototypeFunctions.h:
(JSC::typedArrayLastIndexOfImpl):
(JSC::genericTypedArrayViewProtoFuncLastIndexOf):
* Source/WTF/wtf/SIMDHelpers.h:
(WTF::SIMD::load):
* Source/WTF/wtf/text/StringCommon.h:
(WTF::reverseFind64):
(WTF::reverseFindFloat16):
(WTF::reverseFindFloat):
(WTF::reverseFindDouble):
Canonical link: https://commits.webkit.org/312383@main
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