Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: bc2c8875fc15984df835f8b328cad607447f7398
https://github.com/WebKit/WebKit/commit/bc2c8875fc15984df835f8b328cad607447f7398
Author: Sosuke Suzuki <[email protected]>
Date: 2026-08-25 (Tue, 25 Aug 2026)
Changed paths:
M Source/JavaScriptCore/bytecode/CodeBlock.cpp
Log Message:
-----------
[JSC] LINK `op_instanceof` metadata in `CodeBlock::finishCreation`
https://bugs.webkit.org/show_bug.cgi?id=322559
Reviewed by Yusuke Suzuki.
op_instanceof is missing from the LINK list, so its two GetByIdModeMetadata stay
zero-filled (mode = ProtoLoad, hitCountForLLIntCaching = 0) and the LLInt never
caches the Symbol.hasInstance load. instanceof microbenchmarks with
JSC_useJIT=false get 1.4x-2.3x faster; JIT-enabled runs are neutral.
* Source/JavaScriptCore/bytecode/CodeBlock.cpp:
(JSC::CodeBlock::finishCreation):
Canonical link: https://commits.webkit.org/319846@main
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