- // MIR for `main` before DataflowConstProp
+ // MIR for `main` after DataflowConstProp
  
  fn main() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/sibling_ptr.rs:+0:11: +0:11
      let mut _1: (u8, u8);                // in scope 0 at $DIR/sibling_ptr.rs:+1:9: +1:14
      let _2: ();                          // in scope 0 at $DIR/sibling_ptr.rs:+2:5: +5:6
      let mut _4: *mut u8;                 // in scope 0 at $DIR/sibling_ptr.rs:+4:10: +4:18
      let mut _5: *mut u8;                 // in scope 0 at $DIR/sibling_ptr.rs:+4:10: +4:11
      scope 1 {
          debug x => _1;                   // in scope 1 at $DIR/sibling_ptr.rs:+1:9: +1:14
          let _6: u8;                      // in scope 1 at $DIR/sibling_ptr.rs:+6:9: +6:11
          scope 2 {
              let _3: *mut u8;             // in scope 2 at $DIR/sibling_ptr.rs:+3:13: +3:14
              scope 3 {
                  debug p => _3;           // in scope 3 at $DIR/sibling_ptr.rs:+3:13: +3:14
              }
          }
          scope 4 {
              debug x1 => _6;              // in scope 4 at $DIR/sibling_ptr.rs:+6:9: +6:11
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/sibling_ptr.rs:+1:9: +1:14
          Deinit(_1);                      // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
          (_1.0: u8) = const 0_u8;         // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
          (_1.1: u8) = const 0_u8;         // scope 0 at $DIR/sibling_ptr.rs:+1:27: +1:33
          StorageLive(_2);                 // scope 1 at $DIR/sibling_ptr.rs:+2:5: +5:6
          StorageLive(_3);                 // scope 2 at $DIR/sibling_ptr.rs:+3:13: +3:14
          _3 = &raw mut (_1.0: u8);        // scope 2 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
          StorageLive(_4);                 // scope 3 at $DIR/sibling_ptr.rs:+4:10: +4:18
          StorageLive(_5);                 // scope 3 at $DIR/sibling_ptr.rs:+4:10: +4:11
          _5 = _3;                         // scope 3 at $DIR/sibling_ptr.rs:+4:10: +4:11
          _4 = ptr::mut_ptr::<impl *mut u8>::add(move _5, const 1_usize) -> bb1; // scope 3 at $DIR/sibling_ptr.rs:+4:10: +4:18
                                           // mir::Constant
                                           // + span: $DIR/sibling_ptr.rs:8:12: 8:15
                                           // + literal: Const { ty: unsafe fn(*mut u8, usize) -> *mut u8 {ptr::mut_ptr::<impl *mut u8>::add}, val: Value(<ZST>) }
      }
  
      bb1: {
          StorageDead(_5);                 // scope 3 at $DIR/sibling_ptr.rs:+4:17: +4:18
          (*_4) = const 1_u8;              // scope 3 at $DIR/sibling_ptr.rs:+4:9: +4:22
          StorageDead(_4);                 // scope 3 at $DIR/sibling_ptr.rs:+4:22: +4:23
          _2 = const ();                   // scope 2 at $DIR/sibling_ptr.rs:+2:5: +5:6
          StorageDead(_3);                 // scope 2 at $DIR/sibling_ptr.rs:+5:5: +5:6
          StorageDead(_2);                 // scope 1 at $DIR/sibling_ptr.rs:+5:5: +5:6
          StorageLive(_6);                 // scope 1 at $DIR/sibling_ptr.rs:+6:9: +6:11
          _6 = (_1.1: u8);                 // scope 1 at $DIR/sibling_ptr.rs:+6:14: +6:17
          _0 = const ();                   // scope 0 at $DIR/sibling_ptr.rs:+0:11: +7:2
          StorageDead(_6);                 // scope 1 at $DIR/sibling_ptr.rs:+7:1: +7:2
          StorageDead(_1);                 // scope 0 at $DIR/sibling_ptr.rs:+7:1: +7:2
          return;                          // scope 0 at $DIR/sibling_ptr.rs:+7:2: +7:2
      }
  }