Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 72e0ec4b2165640d591dfebd53e1fc9970fb062c
https://github.com/WebKit/WebKit/commit/72e0ec4b2165640d591dfebd53e1fc9970fb062c
Author: Yusuke Suzuki <[email protected]>
Date: 2026-06-16 (Tue, 16 Jun 2026)
Changed paths:
M Source/JavaScriptCore/bytecode/ArrayProfile.h
M Source/JavaScriptCore/jit/JITOperations.cpp
M Source/JavaScriptCore/runtime/JSObjectInlines.h
Log Message:
-----------
[JSC] Set MayStoreHole appropriately
https://bugs.webkit.org/show_bug.cgi?id=317238
rdar://179858392
Reviewed by Yijia Huang.
We found that MayStoreHole is not appropriately set from C++ code, which
leads too aggressive (wrong) optimization in DFG / FTL, causing the OSR
exits. This patch fixes them.
* Source/JavaScriptCore/bytecode/ArrayProfile.h:
(JSC::ArrayProfile::setMayStoreHole):
* Source/JavaScriptCore/jit/JITOperations.cpp:
(JSC::directPutByVal):
* Source/JavaScriptCore/runtime/JSObjectInlines.h:
(JSC::JSObject::trySetIndexQuickly):
Canonical link: https://commits.webkit.org/315339@main
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