Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: df06fbb5f652bdb89e2f2bda187c44b83f4e3d7d
https://github.com/WebKit/WebKit/commit/df06fbb5f652bdb89e2f2bda187c44b83f4e3d7d
Author: Yusuke Suzuki <[email protected]>
Date: 2022-10-26 (Wed, 26 Oct 2022)
Changed paths:
A JSTests/microbenchmarks/direct-arguments-slice.js
M Source/JavaScriptCore/runtime/DirectArguments.cpp
M Source/JavaScriptCore/runtime/DirectArguments.h
M Source/JavaScriptCore/runtime/JSArray.cpp
Log Message:
-----------
[JSC] Accelerate DirectArguments slice
https://bugs.webkit.org/show_bug.cgi?id=247040
rdar://101570036
Reviewed by Alexey Shvayka.
This patch adds fast Array#slice operation onto DirectArguments since this can
be seen in some applications including
Speedometer2.1/Ember-Debug-TodoMVC and JetStream2/coffeescript-wtb. This
improves performance by 3.5x.
ToT Patched
direct-arguments-slice 15.8485+-0.1058 ^ 4.5368+-0.2171
^ definitely 3.4933x faster
* JSTests/microbenchmarks/direct-arguments-slice.js: Added.
(test):
* Source/JavaScriptCore/runtime/DirectArguments.cpp:
(JSC::DirectArguments::fastSlice):
* Source/JavaScriptCore/runtime/DirectArguments.h:
* Source/JavaScriptCore/runtime/JSArray.cpp:
(JSC::JSArray::fastSlice):
Canonical link: https://commits.webkit.org/256027@main
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