- // MIR for `foo` before DestinationPropagation
+ // MIR for `foo` after DestinationPropagation
  
  fn foo() -> i32 {
      let mut _0: i32;
      let _1: i32;
      let mut _3: bool;
      let _4: i32;
      scope 1 {
-         debug x => _1;
+         debug x => _0;
          let _2: i32;
          scope 2 {
-             debug y => _2;
+             debug y => _0;
          }
      }
  
      bb0: {
-         StorageLive(_1);
-         _1 = val() -> [return: bb1, unwind continue];
+         nop;
+         _0 = val() -> [return: bb1, unwind continue];
      }
  
      bb1: {
-         StorageLive(_2);
+         nop;
          StorageLive(_3);
          _3 = cond() -> [return: bb2, unwind continue];
      }
  
      bb2: {
          switchInt(move _3) -> [0: bb4, otherwise: bb3];
      }
  
      bb3: {
-         _2 = copy _1;
+         nop;
          goto -> bb6;
      }
  
      bb4: {
          StorageLive(_4);
          _4 = val() -> [return: bb5, unwind continue];
      }
  
      bb5: {
          StorageDead(_4);
-         _2 = copy _1;
+         nop;
          goto -> bb6;
      }
  
      bb6: {
          StorageDead(_3);
-         _0 = copy _2;
-         StorageDead(_2);
-         StorageDead(_1);
+         nop;
+         nop;
+         nop;
          return;
      }
  }