Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: e40c476491e9ba8e612a0528889eb814e2c281c0
https://github.com/WebKit/WebKit/commit/e40c476491e9ba8e612a0528889eb814e2c281c0
Author: Sosuke Suzuki <[email protected]>
Date: 2026-02-14 (Sat, 14 Feb 2026)
Changed paths:
M Source/JavaScriptCore/dfg/DFGOperations.cpp
Log Message:
-----------
[JSC] Use rope concatenation instead of tryMakeString in replace operations
for empty strings
https://bugs.webkit.org/show_bug.cgi?id=307267
Reviewed by Yusuke Suzuki.
Replace tryMakeString (malloc + memcpy) with jsSubstring + jsString rope
concatenation in operationStringReplaceStringEmptyString and its WithTable8
variant. This avoids eagerly allocating a flat string when constructing the
result of str.replace(search, "").
The same rope-based pattern is already used in stringReplaceStringString's
noSubstitutions path (StringPrototypeInlines.h)
* Source/JavaScriptCore/dfg/DFGOperations.cpp:
(JSC::DFG::JSC_DEFINE_JIT_OPERATION):
Canonical link: https://commits.webkit.org/307574@main
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