- // MIR for `r` before SimplifyLocals-before-const-prop
+ // MIR for `r` after SimplifyLocals-before-const-prop
  
  fn r() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/simplify_locals.rs:+0:8: +0:8
      let mut _1: i32;                     // in scope 0 at $DIR/simplify_locals.rs:+1:9: +1:14
-     let mut _2: &i32;                    // in scope 0 at $DIR/simplify_locals.rs:+3:13: +3:15
-     let mut _3: &mut i32;                // in scope 0 at $DIR/simplify_locals.rs:+4:13: +4:19
      scope 1 {
          debug a => _1;                   // in scope 1 at $DIR/simplify_locals.rs:+1:9: +1:14
          scope 2 {
              scope 3 {
              }
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/simplify_locals.rs:+1:9: +1:14
          _1 = const 1_i32;                // scope 0 at $DIR/simplify_locals.rs:+1:17: +1:18
-         StorageLive(_2);                 // scope 1 at $DIR/simplify_locals.rs:+3:13: +3:15
-         _2 = &_1;                        // scope 1 at $DIR/simplify_locals.rs:+3:13: +3:15
-         StorageDead(_2);                 // scope 1 at $DIR/simplify_locals.rs:+3:15: +3:16
-         StorageLive(_3);                 // scope 2 at $DIR/simplify_locals.rs:+4:13: +4:19
-         _3 = &mut _1;                    // scope 2 at $DIR/simplify_locals.rs:+4:13: +4:19
-         StorageDead(_3);                 // scope 2 at $DIR/simplify_locals.rs:+4:19: +4:20
          _0 = const ();                   // scope 0 at $DIR/simplify_locals.rs:+0:8: +5:2
          StorageDead(_1);                 // scope 0 at $DIR/simplify_locals.rs:+5:1: +5:2
          return;                          // scope 0 at $DIR/simplify_locals.rs:+5:2: +5:2
      }
  }