Bug 264041

Summary:	countTrailingZeros is redundant and slower than ctz
Product:	WebKit	Reporter:	Seija K. <doremylover123>
Component:	Web Template Framework	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified

Description Seija K. 2023-11-01 09:46:06 PDT

In addition to being redundant because of ctz existing, the lookup table in itself is slower due to the operations happening to the variable v before retrieving the value. Source: https://godbolt.org/z/Pnd9nPPbo

Comment 1 EWS 2023-11-01 13:44:12 PDT

Committed 270076@main (37c77f48561a): <https://commits.webkit.org/270076@main>

Reviewed commits have been landed. Closing PR #19840 and removing active labels.

Comment 2 Radar WebKit Bug Importer 2023-11-01 13:45:30 PDT

<rdar://problem/117813174>