[Webkit-unassigned] [Bug 237503] New: Optimize VMTraps::maybeNeedHandling().
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Sat Mar 5 11:22:27 PST 2022
https://bugs.webkit.org/show_bug.cgi?id=237503
Bug ID: 237503
Summary: Optimize VMTraps::maybeNeedHandling().
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: mark.lam at apple.com
There's no need for VMTraps::maybeNeedHandling() to mask the VMTraps bits for events. Under normal circumstances, there are no traps firing and the traps bits are 0 anyway. We should optimize for this and do away with the masking. Clients who use VMTraps::maybeNeedHandling() should and current does call VMTraps::needHandling() to get the real story on whether there are actually traps to handle or not. Hence, the masking in VMTraps::maybeNeedHandling() is also not needed for correctness.
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