Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 6c0de596d5aae0af45bcdf7ddd0c61f185da9959
https://github.com/WebKit/WebKit/commit/6c0de596d5aae0af45bcdf7ddd0c61f185da9959
Author: Keith Miller <[email protected]>
Date: 2026-09-19 (Sat, 19 Sep 2026)
Changed paths:
M Source/JavaScriptCore/heap/BlockDirectory.cpp
M Source/JavaScriptCore/heap/BlockDirectory.h
M Source/JavaScriptCore/heap/BlockDirectoryInlines.h
M Source/JavaScriptCore/heap/IsoCellSet.cpp
M Source/JavaScriptCore/heap/IsoCellSetInlines.h
M Source/JavaScriptCore/heap/MarkedBlock.cpp
M Source/JavaScriptCore/heap/MarkedBlock.h
Log Message:
-----------
[JSC] Prefetch MarkedBlock when found for allocation
https://bugs.webkit.org/show_bug.cgi?id=324632
rdar://187885349
Reviewed by Yusuke Suzuki.
We have to look at the MarkedBlock's Header to sweep the block anyway.
It seems to be beneficial to manually prefetch the MarkedBlock before
preparing the block for the LocalAllocator, in particular on JetStream.
No new tests, no behavior change. Covered by existing tests.
Canonical link: https://commits.webkit.org/321461@main
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