Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 125d5fe589bd7f8519db69abc80735a1b55280aa
https://github.com/WebKit/WebKit/commit/125d5fe589bd7f8519db69abc80735a1b55280aa
Author: Yusuke Suzuki <[email protected]>
Date: 2023-05-02 (Tue, 02 May 2023)
Changed paths:
A JSTests/stress/array-join-16.js
M Source/JavaScriptCore/runtime/JSStringJoiner.cpp
Log Message:
-----------
[JSC] Use memset_patternN for JSStringJoiner
https://bugs.webkit.org/show_bug.cgi?id=256196
rdar://problem/108770718
Reviewed by Tadeu Zagallo.
Now, JSStringJoiner knows concept of counts of the same element, so let's
leverage this information.
This patch adds memset_patternN optimized code to make memset fast for
particular sizes.
ToT Patched
array-join-object 12.3455+-0.0249 ^ 7.1316+-0.0285 ^
definitely 1.7311x faster
* Source/JavaScriptCore/runtime/JSStringJoiner.cpp:
(JSC::appendStringToDataWithOneCharacterSeparatorRepeatedly):
(JSC::joinStrings):
Canonical link: https://commits.webkit.org/263579@main
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