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style: Avoid some allocations in selector serialization.

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The allocations in display_to_css_identifier show up in the profiles of
bug 1675628.

Differential Revision: https://phabricator.services.mozilla.com/D97856
This commit is contained in:
Emilio Cobos Álvarez 2020-11-22 01:02:22 +00:00
parent 4ea378a6ae
commit 9f40b9ba38
19 changed files with 220 additions and 114 deletions
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2
components/style/invalidation/element/invalidation_map.rs
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@ -478,7 +478,7 @@ impl<'a> SelectorVisitor for SelectorDependencyCollector<'a> {
Component::Class(..) => &mut self.map.class_to_selector,
_ => unreachable!(),
};
let entry = match map.try_entry(atom.clone(), self.quirks_mode) {
let entry = match map.try_entry(atom.0.clone(), self.quirks_mode) {
Ok(entry) => entry,
Err(err) => {
*self.alloc_error = Some(err);