Bug 260064

Summary:	Use ImmutableStyleProperties for presentation attribute style
Product:	WebKit	Reporter:	Antti Koivisto <koivisto>
Component:	CSS	Assignee:	Antti Koivisto <koivisto>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:	260143
Bug Blocks:

Description Antti Koivisto 2023-08-11 02:12:32 PDT

The mutable style here is never actually mutated after construction. Using immutable style is more memory efficient, allows deduplication and improves matched declarations cache performance.

Comment 1 Radar WebKit Bug Importer 2023-08-11 02:13:03 PDT

<rdar://problem/113741146>

Comment 2 Antti Koivisto 2023-08-11 02:16:54 PDT

Pull request: https://github.com/WebKit/WebKit/pull/16600

Comment 3 EWS 2023-08-15 09:37:13 PDT

Committed 266914@main (257a3556e799): <https://commits.webkit.org/266914@main>

Reviewed commits have been landed. Closing PR #16600 and removing active labels.