rust/tests/mir-opt/dest-prop/copy_propagation_arg.bar.DestinationPropagation.diff

- // MIR for `bar` before DestinationPropagation
+ // MIR for `bar` after DestinationPropagation
  
  fn bar(_1: u8) -> () {
      debug x => _1;                       // in scope 0 at $DIR/copy_propagation_arg.rs:+0:8: +0:13
      let mut _0: ();                      // return place in scope 0 at $DIR/copy_propagation_arg.rs:+0:19: +0:19
      let _2: u8;                          // in scope 0 at $DIR/copy_propagation_arg.rs:+1:5: +1:13
      let mut _3: u8;                      // in scope 0 at $DIR/copy_propagation_arg.rs:+1:11: +1:12
  
      bb0: {
          StorageLive(_2);                 // scope 0 at $DIR/copy_propagation_arg.rs:+1:5: +1:13
-         StorageLive(_3);                 // scope 0 at $DIR/copy_propagation_arg.rs:+1:11: +1:12
-         _3 = _1;                         // scope 0 at $DIR/copy_propagation_arg.rs:+1:11: +1:12
-         _2 = dummy(move _3) -> bb1;      // scope 0 at $DIR/copy_propagation_arg.rs:+1:5: +1:13
+         nop;                             // scope 0 at $DIR/copy_propagation_arg.rs:+1:11: +1:12
+         nop;                             // scope 0 at $DIR/copy_propagation_arg.rs:+1:11: +1:12
+         _2 = dummy(move _1) -> bb1;      // scope 0 at $DIR/copy_propagation_arg.rs:+1:5: +1:13
                                           // mir::Constant
                                           // + span: $DIR/copy_propagation_arg.rs:17:5: 17:10
                                           // + literal: Const { ty: fn(u8) -> u8 {dummy}, val: Value(<ZST>) }
      }
  
      bb1: {
-         StorageDead(_3);                 // scope 0 at $DIR/copy_propagation_arg.rs:+1:12: +1:13
+         nop;                             // scope 0 at $DIR/copy_propagation_arg.rs:+1:12: +1:13
          StorageDead(_2);                 // scope 0 at $DIR/copy_propagation_arg.rs:+1:13: +1:14
          _1 = const 5_u8;                 // scope 0 at $DIR/copy_propagation_arg.rs:+2:5: +2:10
          _0 = const ();                   // scope 0 at $DIR/copy_propagation_arg.rs:+0:19: +3:2
          return;                          // scope 0 at $DIR/copy_propagation_arg.rs:+3:2: +3:2
      }
  }