rename ReLateBound to ReBound

other changes:
- `Region::new_late_bound` -> `Region::new_bound`
- `Region::is_late_bound` -> `Region::is_bound`

compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs

@@ -97,7 +97,7 @@ pub(in crate::solve) fn replace_erased_lifetimes_with_bound_vars<'tcx>(
         ty::ReErased => {
             let br = ty::BoundRegion { var: ty::BoundVar::from_u32(counter), kind: ty::BrAnon };
             counter += 1;
-            ty::Region::new_late_bound(tcx, current_depth, br)
+            ty::Region::new_bound(tcx, current_depth, br)
         }
         // All free regions should be erased here.
         r => bug!("unexpected region: {r:?}"),

compiler/rustc_trait_selection/src/solve/canonicalize.rs

@@ -222,7 +222,7 @@ impl<'tcx> TypeFolder<TyCtxt<'tcx>> for Canonicalizer<'_, 'tcx> {
         }
 
         let kind = match *r {
-            ty::ReLateBound(..) => return r,
+            ty::ReBound(..) => return r,
 
             // We may encounter `ReStatic` in item signatures or the hidden type
             // of an opaque. `ReErased` should only be encountered in the hidden
@@ -278,7 +278,7 @@ impl<'tcx> TypeFolder<TyCtxt<'tcx>> for Canonicalizer<'_, 'tcx> {
             var
         });
         let br = ty::BoundRegion { var, kind: BrAnon };
-        ty::Region::new_late_bound(self.interner(), self.binder_index, br)
+        ty::Region::new_bound(self.interner(), self.binder_index, br)
     }
 
     fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> {

compiler/rustc_trait_selection/src/solve/eval_ctxt/canonical.rs

@@ -262,7 +262,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
                     }
                 }
                 GenericArgKind::Lifetime(r) => {
-                    if let ty::ReLateBound(debruijn, br) = *r {
+                    if let ty::ReBound(debruijn, br) = *r {
                         assert_eq!(debruijn, ty::INNERMOST);
                         opt_values[br.var] = Some(*original_value);
                     }