diff --git a/compiler/rustc_middle/src/mir/type_foldable.rs b/compiler/rustc_middle/src/mir/type_foldable.rs
index ceed4fd2467..f3124e5bf42 100644
--- a/compiler/rustc_middle/src/mir/type_foldable.rs
+++ b/compiler/rustc_middle/src/mir/type_foldable.rs
@@ -348,6 +348,7 @@ impl<'tcx> TypeFoldable<'tcx> for Constant<'tcx> {
 }
 
 impl<'tcx> TypeFoldable<'tcx> for ConstantKind<'tcx> {
+    #[inline(always)]
     fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self {
         folder.fold_mir_const(self)
     }
diff --git a/compiler/rustc_mir/src/interpret/eval_context.rs b/compiler/rustc_mir/src/interpret/eval_context.rs
index 149a9f81ea0..a0e912c84d5 100644
--- a/compiler/rustc_mir/src/interpret/eval_context.rs
+++ b/compiler/rustc_mir/src/interpret/eval_context.rs
@@ -527,6 +527,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         }
     }
 
+    #[inline(always)]
     pub fn layout_of_local(
         &self,
         frame: &Frame<'mir, 'tcx, M::PointerTag, M::FrameExtra>,