- // MIR for `main` before DataflowConstProp
+ // MIR for `main` after DataflowConstProp
  
  fn main() -> () {
      let mut _0: ();
      let mut _1: i32;
      scope 1 {
          debug a => _1;
      }
  
      bb0: {
          StorageLive(_1);
          _1 = const 0_i32;
-         _1 = Add(copy _1, const 1_i32);
-         _1 = Add(copy _1, const 1_i32);
+         _1 = const 1_i32;
+         _1 = const 2_i32;
          _0 = const ();
          StorageDead(_1);
          return;
      }
  }