Andreas Kling 77d98b5697 LibWeb: Add per-attribute-name CSS rule buckets ...

This allows us to skip evaluating selectors like "[foo=bar]" for any
element that doesn't have a "foo" attribute.

Note that the bucket is case-insensitively keyed on the attribute name
since case sensitivity is depending on evaluation context. This ensures
we may get some false positives but no false negatives.

Reduces the number of selectors evaluated by 36% when loading our GitHub
repo at https://github.com/SerenityOS/serenity

2024-03-16 14:27:59 +01:00

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