Rollup merge of #122141 - klensy:sync-me, r=lcnr

sync (try_)instantiate_mir_and_normalize_erasing_regions implementation

`try_instantiate_mir_and_normalize_erasing_regions` was changed in https://github.com/rust-lang/rust/commit/dbc2cc8717dd8c8006595d9e9c91ad472109165a, but not `instantiate_mir_and_normalize_erasing_regions`, sync them.

see https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/instantiate_mir_and_normalize_erasing_regions.20vs.20try_*.20ver

r? `@lcnr`

1 files changed, 4 insertions, 2 deletions

diff --git a/compiler/rustc_middle/src/ty/instance.rs b/compiler/rustc_middle/src/ty/instance.rs
index 260d0885089..9fc8d418f5b 100644
--- a/compiler/rustc_middle/src/ty/instance.rs
+++ b/compiler/rustc_middle/src/ty/instance.rs
@@ -694,6 +694,7 @@ impl<'tcx> Instance<'tcx> {
     }
 
     #[inline(always)]
+    // Keep me in sync with try_instantiate_mir_and_normalize_erasing_regions
     pub fn instantiate_mir_and_normalize_erasing_regions<T>(
         &self,
         tcx: TyCtxt<'tcx>,
@@ -701,16 +702,17 @@ impl<'tcx> Instance<'tcx> {
         v: EarlyBinder<T>,
     ) -> T
     where
-        T: TypeFoldable<TyCtxt<'tcx>> + Clone,
+        T: TypeFoldable<TyCtxt<'tcx>>,
     {
         if let Some(args) = self.args_for_mir_body() {
             tcx.instantiate_and_normalize_erasing_regions(args, param_env, v)
         } else {
-            tcx.normalize_erasing_regions(param_env, v.skip_binder())
+            tcx.normalize_erasing_regions(param_env, v.instantiate_identity())
         }
     }
 
     #[inline(always)]
+    // Keep me in sync with instantiate_mir_and_normalize_erasing_regions
     pub fn try_instantiate_mir_and_normalize_erasing_regions<T>(
         &self,
         tcx: TyCtxt<'tcx>,