Aliaksandr Kalenik eea9837438 LibWeb: Skip :has() invalidation in update_style when nothing is pending ...

Add a document-level boolean flag that tracks whether any :has()
invalidations have been scheduled. This avoids iterating over all
shadow roots just to check is_empty() on each style scope when no
:has() invalidations are pending, which is the common case during
scrolling on complex pages like Reddit.

Results in ~10% reduction of is_empty() calls in profiles when
scrolling on Reddit.

2026-02-11 00:28:42 +01:00

4.3 KiB

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