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Remove redundant sorting of projections in TypeIdHasher.

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This commit is contained in:
Michael Woerister 2016-09-13 08:40:14 -04:00
parent 5c923f0159
commit 94d75013bc
1 changed files with 4 additions and 8 deletions
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12
src/librustc/ty/util.rs
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@ -458,15 +458,11 @@ impl<'a, 'gcx, 'tcx> TypeVisitor<'tcx> for TypeIdHasher<'a, 'gcx, 'tcx> {
data.region_bound.visit_with(self);
self.hash(data.builtin_bounds);
// Only projection bounds are left, sort and hash them.
let mut projection_bounds: Vec<_> = data.projection_bounds
.iter()
.map(|b| (b.item_name().as_str(), b))
.collect();
projection_bounds.sort_by_key(|&(ref name, _)| name.clone());
for (name, bound) in projection_bounds {
// Only projection bounds are left, hash them.
self.hash(data.projection_bounds.len());
for bound in &data.projection_bounds {
self.def_id(bound.0.trait_ref.def_id);
self.hash(name);
self.hash(bound.0.item_name);
bound.visit_with(self);
}