bjoernager/rust
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Auto merge of #108300 - oli-obk:elsa, r=eholk

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Use a lock-free datastructure for source_span

follow up to the perf regression in https://github.com/rust-lang/rust/pull/105462

The main regression is likely the CStore, but let's evaluate the perf impact of this on its own
This commit is contained in:
bors 2023-02-22 08:44:30 +00:00
commit bd4a96a12d
12 changed files with 79 additions and 36 deletions
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2
compiler/rustc_query_system/src/ich/hcx.rs
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@ -146,7 +146,7 @@ impl<'a> rustc_span::HashStableContext for StableHashingContext<'a> {
#[inline]
fn def_span(&self, def_id: LocalDefId) -> Span {
*self.untracked.source_span.read().get(def_id).unwrap_or(&DUMMY_SP)
self.untracked.source_span.get(def_id).unwrap_or(DUMMY_SP)
}
#[inline]