Rollup merge of #119003 - matthiaskrgr:nein_clone, r=Nadrieril

NFC: do not clone types that are copy

compiler/rustc_middle/src/infer/canonical.rs

@@ -341,13 +341,13 @@ impl<'tcx> CanonicalParamEnvCache<'tcx> {
             Entry::Occupied(e) => {
                 let (canonical, var_values) = e.get();
                 state.var_values.extend_from_slice(var_values);
-                canonical.clone()
+                *canonical
             }
             Entry::Vacant(e) => {
                 let canonical = canonicalize_op(tcx, key, state);
                 let OriginalQueryValues { var_values, universe_map } = state;
                 assert_eq!(universe_map.len(), 1);
-                e.insert((canonical.clone(), tcx.arena.alloc_slice(var_values)));
+                e.insert((canonical, tcx.arena.alloc_slice(var_values)));
                 canonical
             }
         }

compiler/rustc_middle/src/ty/consts.rs

@@ -59,7 +59,7 @@ impl<'tcx> Const<'tcx> {
 
     #[inline]
     pub fn kind(self) -> ConstKind<'tcx> {
-        self.0.kind.clone()
+        self.0.kind
     }
 
     #[inline]

compiler/rustc_middle/src/ty/mod.rs

@@ -473,7 +473,7 @@ impl<'tcx> IntoKind for Ty<'tcx> {
     type Kind = TyKind<'tcx>;
 
     fn kind(self) -> TyKind<'tcx> {
-        self.kind().clone()
+        *self.kind()
     }
 }