diff options
| author | Eduard-Mihai Burtescu <edy.burt@gmail.com> | 2016-11-12 10:38:44 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2016-11-12 10:38:44 +0200 |
| commit | afbb675f2ec243358933f9fa16175fd8db83a3ae (patch) | |
| tree | 5608da1965a22f2f5b7954152feb8fbe99ce1c03 | |
| parent | 75f2c211240cf257ce34a82a1d0b34b2c9dde573 (diff) | |
| parent | 11c1126688bab32f76dbe1a973906c7586da143f (diff) | |
| download | rust-afbb675f2ec243358933f9fa16175fd8db83a3ae.tar.gz rust-afbb675f2ec243358933f9fa16175fd8db83a3ae.zip | |
Rollup merge of #37705 - nnethercote:fewer-mk_ty-calls, r=brson
Avoid unnecessary mk_ty calls in Ty::super_fold_with. This speeds up compilation of several rustc-benchmarks by 1--2% and the workload in #36799 by 5%. r? @eddyb
| -rw-r--r-- | src/librustc/ty/structural_impls.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc/ty/structural_impls.rs b/src/librustc/ty/structural_impls.rs index 9ca911837b5..282cb9f80f5 100644 --- a/src/librustc/ty/structural_impls.rs +++ b/src/librustc/ty/structural_impls.rs @@ -482,7 +482,7 @@ impl<'tcx> TypeFoldable<'tcx> for Ty<'tcx> { ty::TyAnon(did, substs) => ty::TyAnon(did, substs.fold_with(folder)), ty::TyBool | ty::TyChar | ty::TyStr | ty::TyInt(_) | ty::TyUint(_) | ty::TyFloat(_) | ty::TyError | ty::TyInfer(_) | - ty::TyParam(..) | ty::TyNever => self.sty.clone(), + ty::TyParam(..) | ty::TyNever => return self }; folder.tcx().mk_ty(sty) } |