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document reason for #[inline(never)] annotation

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Niko Matsakis 2018-03-29 03:45:05 -04:00
parent 499d784fbd
commit bd90302af6
1 changed files with 1 additions and 1 deletions
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src/librustc_mir/borrow_check/nll/region_infer/mod.rs
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@ -556,7 +556,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
/// indices of constraints that need to be re-evaluated when X changes. /// indices of constraints that need to be re-evaluated when X changes.
/// These are constraints like Y: X @ P -- so if X changed, we may /// These are constraints like Y: X @ P -- so if X changed, we may
/// need to grow Y. /// need to grow Y.
#[inline(never)] #[inline(never)] // ensure dfs is identifiable in profiles
fn build_dependency_map(&mut self) -> IndexVec<RegionVid, Option<ConstraintIndex>> { fn build_dependency_map(&mut self) -> IndexVec<RegionVid, Option<ConstraintIndex>> {
let mut map = IndexVec::from_elem(None, &self.definitions); let mut map = IndexVec::from_elem(None, &self.definitions);