[Webkit-unassigned] [Bug 194084] New: [JSC] Do not use InferredValue in non-JIT configuration
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Jan 30 23:49:25 PST 2019
https://bugs.webkit.org/show_bug.cgi?id=194084
Bug ID: 194084
Summary: [JSC] Do not use InferredValue in non-JIT
configuration
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: ysuzuki at apple.com
This is typically used to identify that the given value is a singleton. And held value and watchpoint are used in DFG / FTL to make that value constant.
This is allocated for each JSFunction and SymbolTable. It is
1. Costly. Since this also requires IsoSubspace, IsoCellSet, and finalizers.
2. While this InferredValue is also used in ObjectAllocationProfile to check the possibility of poly proto, InlinedWatchpoint is enough for this use case.
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