Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 15c111ad40f88e0ab1f6640b73aef024b873bc6b
https://github.com/WebKit/WebKit/commit/15c111ad40f88e0ab1f6640b73aef024b873bc6b
Author: Yusuke Suzuki <[email protected]>
Date: 2026-04-14 (Tue, 14 Apr 2026)
Changed paths:
A JSTests/microbenchmarks/wasm-udiv-by-constant.js
M Source/JavaScriptCore/b3/B3ReduceStrength.cpp
M Source/JavaScriptCore/b3/testb3.h
M Source/JavaScriptCore/b3/testb3_2.cpp
M Source/JavaScriptCore/b3/testb3_3.cpp
Log Message:
-----------
[JSC] Add 32bit unsigned integer division optimization in B3
https://bugs.webkit.org/show_bug.cgi?id=312251
rdar://174725405
Reviewed by Sosuke Suzuki.
This patch adds 32bit unsigned integer division optimization. This is
presented in [1], which is also integrated into LLVM[2].
ToT Patched
wasm-udiv-by-constant 47.6174+-0.0889 ^ 24.7490+-0.1027
^ definitely 1.9240x faster
[1]: https://arxiv.org/abs/2604.07902
[2]: https://github.com/llvm/llvm-project/pull/181288
Tests: Source/JavaScriptCore/b3/testb3_2.cpp
Source/JavaScriptCore/b3/testb3_3.cpp
* JSTests/microbenchmarks/wasm-udiv-by-constant.js: Added.
* Source/JavaScriptCore/b3/B3ReduceStrength.cpp:
* Source/JavaScriptCore/b3/testb3.h:
* Source/JavaScriptCore/b3/testb3_2.cpp:
(testUDivByConstantInt32With33BitMagic):
* Source/JavaScriptCore/b3/testb3_3.cpp:
(addArgTests):
Canonical link: https://commits.webkit.org/311220@main
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