- // MIR for `main` before GVN
+ // MIR for `main` after GVN
  
  fn main() -> () {
      let mut _0: ();
      let mut _1: u8;
      let mut _2: u8;
      let mut _3: u8;
      scope 1 {
      }
      scope 2 (inlined #[track_caller] <u8 as Add>::add) {
          let mut _4: (u8, bool);
      }
  
      bb0: {
          StorageLive(_1);
          StorageLive(_2);
          _2 = const u8::MAX;
          StorageLive(_3);
          _3 = const 1_u8;
          StorageLive(_4);
-         _4 = AddWithOverflow(copy _2, copy _3);
-         assert(!move (_4.1: bool), "attempt to compute `{} + {}`, which would overflow", copy _2, copy _3) -> [success: bb1, unwind unreachable];
+         _4 = const (0_u8, true);
+         assert(!const true, "attempt to compute `{} + {}`, which would overflow", const u8::MAX, const 1_u8) -> [success: bb1, unwind unreachable];
      }
  
      bb1: {
-         _1 = move (_4.0: u8);
+         _1 = const 0_u8;
          StorageDead(_4);
          StorageDead(_3);
          StorageDead(_2);
          StorageDead(_1);
          _0 = const ();
          return;
      }
+ }
+ 
+ ALLOC0 (size: 2, align: 1) {
+     00 01                                           │ ..
  }