Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 5b42d60b4ff3f9fc0d4676c72b4e418260e9952d
https://github.com/WebKit/WebKit/commit/5b42d60b4ff3f9fc0d4676c72b4e418260e9952d
Author: Antti Koivisto <[email protected]>
Date: 2026-05-04 (Mon, 04 May 2026)
Changed paths:
M LayoutTests/fast/selectors/has-invalidation-traversal-size-expected.txt
M LayoutTests/fast/selectors/has-invalidation-traversal-size.html
M Source/WebCore/css/parser/CSSSelectorParser.cpp
M Source/WebCore/style/StyleInvalidator.cpp
M Source/WebCore/style/StyleScopeRuleSets.h
Log Message:
-----------
[:has() perf] Optimize non-subject sibling invalidation
https://bugs.webkit.org/show_bug.cgi?id=313629
rdar://175835568
Reviewed by Alan Baradlay.
Avoid full document invalidation traversal in cases like
.c:has(+ .trigger) > .target
.c:has(~ .trigger) > .target
.c:has(+ .trigger) .target
.c:has(~ .trigger) .target
* Source/WebCore/css/parser/CSSSelectorParser.cpp:
(WebCore::CSSSelectorParser::makeHasScopeSelector):
Also ensure we differentiate between scope breaking and weakly scoped cases.
* Source/WebCore/style/StyleInvalidator.cpp:
(WebCore::Style::Invalidator::invalidateStyleWithMatchElement):
* Source/WebCore/style/StyleScopeRuleSets.h:
Add additional traversal paths.
Canonical link: https://commits.webkit.org/312513@main
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