Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: eef93d3c2048ad7b1f2cb299d4fcb3b4fd176272
https://github.com/WebKit/WebKit/commit/eef93d3c2048ad7b1f2cb299d4fcb3b4fd176272
Author: Yusuke Suzuki <[email protected]>
Date: 2026-06-08 (Mon, 08 Jun 2026)
Changed paths:
M Source/JavaScriptCore/yarr/YarrJIT.cpp
Log Message:
-----------
[YARR] Optimize save and restore ParenContext
https://bugs.webkit.org/show_bug.cgi?id=316555
rdar://179025965
Reviewed by Yijia Huang.
This patch optimizes save / restore ParenContext in YarrJIT. We
carefully reorder the load / store so that we remove unnecessary loads,
which is critical for performance in particular in RegExp which tends to
have small JIT code.
1. matchAmount load is duplicate. We should hoist it and remove
duplicate loads.
2. Skip return-address storing when we know it is not necessary (there
are only 1 (or less) alternative).
* Source/JavaScriptCore/yarr/YarrJIT.cpp:
Canonical link: https://commits.webkit.org/314761@main
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