- // MIR for `main` before ConstProp
+ // MIR for `main` after ConstProp
  
  fn main() -> () {
      let mut _0: ();
      let _1: i32;
      let mut _2: &i32;
      let _3: i32;
      let mut _4: &i32;
      scope 1 {
          debug a => _1;
      }
  
      bb0: {
          StorageLive(_1);
          StorageLive(_2);
          _4 = const _;
          _2 = &(*_4);
          _1 = (*_2);
          StorageDead(_2);
          _0 = const ();
          StorageDead(_1);
          return;
      }
  }