- // MIR for `f` before CopyProp
+ // MIR for `f` after CopyProp
  
  fn f(_1: bool) -> bool {
      let mut _0: bool;
      let mut _2: bool;
      let mut _3: *const bool;
      let mut _4: *mut bool;
  
      bb0: {
          _2 = copy _1;
          _3 = &raw const _2;
          _4 = &raw mut (*_3);
          (*_4) = const false;
          _0 = copy _1;
          return;
      }
  }