src/test/mir-opt/copy_propagation.test.CopyPropagation.diff

- // MIR for `test` before CopyPropagation
+ // MIR for `test` after CopyPropagation
  
  fn test(_1: u32) -> u32 {
      debug x => _1;                       // in scope 0 at $DIR/copy_propagation.rs:3:9: 3:10
      let mut _0: u32;                     // return place in scope 0 at $DIR/copy_propagation.rs:3:20: 3:23
      let _2: u32;                         // in scope 0 at $DIR/copy_propagation.rs:4:9: 4:10
      scope 1 {
          debug y => _0;                   // in scope 1 at $DIR/copy_propagation.rs:4:9: 4:10
      }
  
      bb0: {
          nop;                             // scope 0 at $DIR/copy_propagation.rs:4:9: 4:10
          _0 = _1;                         // scope 0 at $DIR/copy_propagation.rs:4:13: 4:14
          nop;                             // scope 1 at $DIR/copy_propagation.rs:5:5: 5:6
          nop;                             // scope 0 at $DIR/copy_propagation.rs:6:1: 6:2
          return;                          // scope 0 at $DIR/copy_propagation.rs:6:2: 6:2
      }
  }