- // MIR for `f` before CopyProp
+ // MIR for `f` after CopyProp
  
  fn f(_1: T) -> () {
      debug a => _1;                       // in scope 0 at $DIR/move_arg.rs:+0:19: +0:20
      let mut _0: ();                      // return place in scope 0 at $DIR/move_arg.rs:+0:25: +0:25
      let _2: T;                           // in scope 0 at $DIR/move_arg.rs:+1:9: +1:10
      let _3: ();                          // in scope 0 at $DIR/move_arg.rs:+2:5: +2:12
      let mut _4: T;                       // in scope 0 at $DIR/move_arg.rs:+2:7: +2:8
      let mut _5: T;                       // in scope 0 at $DIR/move_arg.rs:+2:10: +2:11
      scope 1 {
-         debug b => _2;                   // in scope 1 at $DIR/move_arg.rs:+1:9: +1:10
+         debug b => _1;                   // in scope 1 at $DIR/move_arg.rs:+1:9: +1:10
      }
  
      bb0: {
-         StorageLive(_2);                 // scope 0 at $DIR/move_arg.rs:+1:9: +1:10
-         _2 = _1;                         // scope 0 at $DIR/move_arg.rs:+1:13: +1:14
          StorageLive(_3);                 // scope 1 at $DIR/move_arg.rs:+2:5: +2:12
-         StorageLive(_4);                 // scope 1 at $DIR/move_arg.rs:+2:7: +2:8
-         _4 = _1;                         // scope 1 at $DIR/move_arg.rs:+2:7: +2:8
-         StorageLive(_5);                 // scope 1 at $DIR/move_arg.rs:+2:10: +2:11
-         _5 = _2;                         // scope 1 at $DIR/move_arg.rs:+2:10: +2:11
-         _3 = g::<T>(move _4, move _5) -> bb1; // scope 1 at $DIR/move_arg.rs:+2:5: +2:12
+         _3 = g::<T>(_1, _1) -> bb1;      // scope 1 at $DIR/move_arg.rs:+2:5: +2:12
                                           // mir::Constant
                                           // + span: $DIR/move_arg.rs:7:5: 7:6
                                           // + literal: Const { ty: fn(T, T) {g::<T>}, val: Value(<ZST>) }
      }
  
      bb1: {
-         StorageDead(_5);                 // scope 1 at $DIR/move_arg.rs:+2:11: +2:12
-         StorageDead(_4);                 // scope 1 at $DIR/move_arg.rs:+2:11: +2:12
          StorageDead(_3);                 // scope 1 at $DIR/move_arg.rs:+2:12: +2:13
          _0 = const ();                   // scope 0 at $DIR/move_arg.rs:+0:25: +3:2
-         StorageDead(_2);                 // scope 0 at $DIR/move_arg.rs:+3:1: +3:2
          return;                          // scope 0 at $DIR/move_arg.rs:+3:2: +3:2
      }
  }