Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: d60bafb0be1bf24b79a858f9208e5047c58f0d06
https://github.com/WebKit/WebKit/commit/d60bafb0be1bf24b79a858f9208e5047c58f0d06
Author: Yusuke Suzuki <[email protected]>
Date: 2023-05-09 (Tue, 09 May 2023)
Changed paths:
A JSTests/stress/object-create-will-do-transition.js
M Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h
M Source/JavaScriptCore/dfg/DFGClobberize.h
Log Message:
-----------
[JSC] Refine Object.create modeling in DFG after mayBePrototype bit is mored
to Structure
https://bugs.webkit.org/show_bug.cgi?id=256551
rdar://109045428
Reviewed by Justin Michaud.
To adopt megamorphic IC, we moved mayBePrototype to Structure. As a result, DFG
ObjectCreate should
claim that it can clobber JSCell_structureID since prototype object can be
transitioned. This fixes it appropriately.
* JSTests/stress/object-create-will-do-transition.js: Added.
(q):
* Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
* Source/JavaScriptCore/dfg/DFGClobberize.h:
(JSC::DFG::clobberize):
Canonical link: https://commits.webkit.org/263889@main
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