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Auto merge of #19781 - upsuper:matching-opt, r=emilio

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Optimize selector matching for some common cases

This is the "better way" I mentioned in #19774, which seems to actually improve the score of dromaeo_css on talos.

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This commit is contained in:
bors-servo 2018-01-16 16:47:29 -06:00 • committed by GitHub
commit 525758ea5e
2 changed files with 92 additions and 26 deletions
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4
components/style/invalidation/element/invalidator.rs
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@ -9,7 +9,7 @@ use context::StackLimitChecker;
use dom::{TElement, TNode};
use selector_parser::SelectorImpl;
use selectors::matching::{CompoundSelectorMatchingResult, MatchingContext};
use selectors::matching::matches_compound_selector;
use selectors::matching::matches_compound_selector_from;
use selectors::parser::{Combinator, Component, Selector};
use smallvec::SmallVec;
use std::fmt;
@ -691,7 +691,7 @@ where
debug!("TreeStyleInvalidator::process_invalidation({:?}, {:?}, {:?})",
self.element, invalidation, invalidation_kind);
let matching_result = matches_compound_selector(
let matching_result = matches_compound_selector_from(
&invalidation.selector,
invalidation.offset,
self.processor.matching_context(),