Remove in_band_lifetimes from borrowck

[rust.git] / compiler / rustc_borrowck / src / type_check / free_region_relations.rs

diff --git a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs
index f71cf09ecf6304941c6fb6d2a04497185ed0ad58..fec6bdf314b1d6c848748af6c511bba32fb9d842 100644 (file)
--- a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs
+++ b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs
@@ -58,7 +58,7 @@
     crate normalized_inputs_and_output: NormalizedInputsAndOutput<'tcx>,
 }
 
-crate fn create(
+crate fn create<'tcx>(
     infcx: &InferCtxt<'_, 'tcx>,
     param_env: ty::ParamEnv<'tcx>,
     implicit_region_bound: Option<ty::Region<'tcx>>,
@@ -81,7 +81,7 @@
     .create()
 }
 
-impl UniversalRegionRelations<'tcx> {
+impl UniversalRegionRelations<'_> {
     /// Records in the `outlives_relation` (and
     /// `inverse_outlives_relation`) that `fr_a: fr_b`. Invoked by the
     /// builder below.
@@ -110,7 +110,7 @@ fn relate_universal_regions(&mut self, fr_a: RegionVid, fr_b: RegionVid) {
     /// outlives `fr` and (b) is not local.
     ///
     /// (*) If there are multiple competing choices, we return all of them.
-    crate fn non_local_upper_bounds(&'a self, fr: &'a RegionVid) -> Vec<&'a RegionVid> {
+    crate fn non_local_upper_bounds<'a>(&'a self, fr: &'a RegionVid) -> Vec<&'a RegionVid> {
         debug!("non_local_upper_bound(fr={:?})", fr);
         let res = self.non_local_bounds(&self.inverse_outlives, fr);
         assert!(!res.is_empty(), "can't find an upper bound!?");
@@ -232,7 +232,7 @@ struct UniversalRegionRelationsBuilder<'this, 'tcx> {
     region_bound_pairs: RegionBoundPairs<'tcx>,
 }
 
-impl UniversalRegionRelationsBuilder<'cx, 'tcx> {
+impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> {
     crate fn create(mut self) -> CreateResult<'tcx> {
         let unnormalized_input_output_tys = self
             .universal_regions
@@ -256,7 +256,6 @@ impl UniversalRegionRelationsBuilder<'cx, 'tcx> {
                 debug!("build: input_or_output={:?}", ty);
                 // We add implied bounds from both the unnormalized and normalized ty
                 // See issue #87748
-                let constraints_implied_1 = self.add_implied_bounds(ty);
                 let TypeOpOutput { output: norm_ty, constraints: constraints1, .. } = self
                     .param_env
                     .and(type_op::normalize::Normalize::new(ty))
@@ -284,10 +283,9 @@ impl UniversalRegionRelationsBuilder<'cx, 'tcx> {
                 // }
                 // ```
                 // Both &Self::Bar and &() are WF
-                let constraints_implied_2 =
-                    if ty != norm_ty { self.add_implied_bounds(norm_ty) } else { None };
+                let constraints_implied = self.add_implied_bounds(norm_ty);
                 normalized_inputs_and_output.push(norm_ty);
-                constraints1.into_iter().chain(constraints_implied_1).chain(constraints_implied_2)
+                constraints1.into_iter().chain(constraints_implied)
             })
             .collect();