- // MIR for `main` before GVN
+ // MIR for `main` after GVN
  
  fn main() -> () {
      let mut _0: ();
      let _1: (u32, u32);
      let _2: ();
      let mut _3: (u32, u32);
      scope 1 {
          debug x => _1;
      }
  
      bb0: {
-         StorageLive(_1);
-         _1 = (const 1_u32, const 2_u32);
+         nop;
+         _1 = const (1_u32, 2_u32);
          StorageLive(_2);
          StorageLive(_3);
-         _3 = copy _1;
-         _2 = consume(move _3) -> [return: bb1, unwind unreachable];
+         _3 = const (1_u32, 2_u32);
+         _2 = consume(const (1_u32, 2_u32)) -> [return: bb1, unwind unreachable];
      }
  
      bb1: {
          StorageDead(_3);
          StorageDead(_2);
          _0 = const ();
-         StorageDead(_1);
+         nop;
          return;
      }
  }
+ 
+ ALLOC0 (size: 8, align: 4) { .. }