Skip checks for common types with alignment 1

2023-03-24 12:35:16 -04:00 · 2023-03-24 12:35:16 -04:00 · 67540ec950
commit 67540ec950
parent a71b808d77
1 changed files with 7 additions and 0 deletions
--- a/compiler/rustc_mir_transform/src/check_alignment.rs
+++ b/compiler/rustc_mir_transform/src/check_alignment.rs
@ -99,6 +99,13 @@ fn visit_place(&mut self, place: &Place<'tcx>, context: PlaceContext, _location:
            return;
        }

+        if [self.tcx.types.bool, self.tcx.types.i8, self.tcx.types.u8, self.tcx.types.str_]
+            .contains(&pointee_ty)
+        {
+            debug!("Trivially aligned pointee type: {:?}", pointer_ty);
+            return;
+        }
+
        self.pointers.push((pointer, pointee_ty))
    }
 }