Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 512dfa371a12e5b7497f03cfea9c1588c0d00043
https://github.com/WebKit/WebKit/commit/512dfa371a12e5b7497f03cfea9c1588c0d00043
Author: Yusuke Suzuki <[email protected]>
Date: 2026-07-20 (Mon, 20 Jul 2026)
Changed paths:
M Source/JavaScriptCore/jit/ThunkGenerators.cpp
Log Message:
-----------
[JSC] Fold String.prototype.at negative-index adjustment to a branchless csel
https://bugs.webkit.org/show_bug.cgi?id=319789
rdar://182662211
Reviewed by Yijia Huang.
stringCharLoad<RelativeNegativeIndex::Yes> is having very small jumps to
covert the negative-index to the positive one. But this can be branchless.
* Source/JavaScriptCore/jit/ThunkGenerators.cpp:
(JSC::stringCharLoad):
Canonical link: https://commits.webkit.org/317553@main
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