---

yaml
---
r: 195788
b: refs/heads/auto
c: e78550b
h: refs/heads/master
v: v3

Author: nikomatsakis

[refs]

@@ -10,7 +10,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: a6d9930525bee48e250bc9527f48c501e53d861d
+refs/heads/auto: e78550bf88eac19b5a1b7a5c1dbad0d0c331c557
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/src/librustc/middle/traits/select.rs

@@ -39,10 +39,10 @@ use middle::infer;
 use middle::infer::{InferCtxt, TypeFreshener};
 use middle::ty_fold::TypeFoldable;
 use std::cell::RefCell;
-use std::collections::hash_map::HashMap;
 use std::rc::Rc;
 use syntax::{abi, ast};
 use util::common::ErrorReported;
+use util::nodemap::FnvHashMap;
 use util::ppaux::Repr;
 
 pub struct SelectionContext<'cx, 'tcx:'cx> {
@@ -86,8 +86,8 @@ struct TraitObligationStack<'prev, 'tcx: 'prev> {
 
 #[derive(Clone)]
 pub struct SelectionCache<'tcx> {
-    hashmap: RefCell<HashMap<Rc<ty::TraitRef<'tcx>>,
-                             SelectionResult<'tcx, SelectionCandidate<'tcx>>>>,
+    hashmap: RefCell<FnvHashMap<Rc<ty::TraitRef<'tcx>>,
+                                SelectionResult<'tcx, SelectionCandidate<'tcx>>>>,
 }
 
 pub enum MethodMatchResult {
@@ -2634,7 +2634,7 @@ impl<'tcx> Repr<'tcx> for SelectionCandidate<'tcx> {
 impl<'tcx> SelectionCache<'tcx> {
     pub fn new() -> SelectionCache<'tcx> {
         SelectionCache {
-            hashmap: RefCell::new(HashMap::new())
+            hashmap: RefCell::new(FnvHashMap())
         }
     }
 }