Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 761d9032a43cb57a16f71df3343b9d8cbd208746
https://github.com/WebKit/WebKit/commit/761d9032a43cb57a16f71df3343b9d8cbd208746
Author: Sergey Rubanov <[email protected]>
Date: 2026-09-03 (Thu, 03 Sep 2026)
Changed paths:
M Source/JavaScriptCore/b3/B3LowerToAir.cpp
M Source/JavaScriptCore/b3/testb3.h
M Source/JavaScriptCore/b3/testb3_1.cpp
M Source/JavaScriptCore/b3/testb3_7.cpp
Log Message:
-----------
[JSC] Fold Shl into ARM64 WasmAddress index form
https://bugs.webkit.org/show_bug.cgi?id=323211
Reviewed by Yusuke Suzuki.
WasmAddress already folds ZExt32/SExt32 into ARM64 UXTW/SXTW via
indexArg. This also absorbs a pointer-width Shl into the index scale
so a load can be LDR Xt, [Xn, Wm, UXTW #scale]. A 32-bit Shl inside
ZExt32 is left unscaled because wrapping that shift is not the same
as shifting after the extend.
* Source/JavaScriptCore/b3/B3LowerToAir.cpp:
* Source/JavaScriptCore/b3/testb3.h:
* Source/JavaScriptCore/b3/testb3_1.cpp:
* Source/JavaScriptCore/b3/testb3_7.cpp:
Canonical link: https://commits.webkit.org/320441@main
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