rust/tests/mir-opt/copy-prop/reborrow.remut.CopyProp.diff

- // MIR for `remut` before CopyProp
+ // MIR for `remut` after CopyProp
  
  fn remut(_1: u8) -> () {
      debug x => _1;                       // in scope 0 at $DIR/reborrow.rs:+0:10: +0:15
      let mut _0: ();                      // return place in scope 0 at $DIR/reborrow.rs:+0:21: +0:21
      let _2: &mut u8;                     // in scope 0 at $DIR/reborrow.rs:+1:9: +1:10
      let _5: ();                          // in scope 0 at $DIR/reborrow.rs:+4:5: +4:14
      let mut _6: &mut u8;                 // in scope 0 at $DIR/reborrow.rs:+4:12: +4:13
      scope 1 {
          debug a => _2;                   // in scope 1 at $DIR/reborrow.rs:+1:9: +1:10
          let _3: &mut u8;                 // in scope 1 at $DIR/reborrow.rs:+2:9: +2:10
          scope 2 {
              debug b => _3;               // in scope 2 at $DIR/reborrow.rs:+2:9: +2:10
              let _4: &mut u8;             // in scope 2 at $DIR/reborrow.rs:+3:9: +3:10
              scope 3 {
-                 debug c => _4;           // in scope 3 at $DIR/reborrow.rs:+3:9: +3:10
+                 debug c => _2;           // in scope 3 at $DIR/reborrow.rs:+3:9: +3:10
              }
          }
      }
  
      bb0: {
-         StorageLive(_2);                 // scope 0 at $DIR/reborrow.rs:+1:9: +1:10
          _2 = &mut _1;                    // scope 0 at $DIR/reborrow.rs:+1:13: +1:19
          StorageLive(_3);                 // scope 1 at $DIR/reborrow.rs:+2:9: +2:10
          _3 = &mut (*_2);                 // scope 1 at $DIR/reborrow.rs:+2:13: +2:20
-         StorageLive(_4);                 // scope 2 at $DIR/reborrow.rs:+3:9: +3:10
-         _4 = move _2;                    // scope 2 at $DIR/reborrow.rs:+3:13: +3:14
          StorageLive(_5);                 // scope 3 at $DIR/reborrow.rs:+4:5: +4:14
-         StorageLive(_6);                 // scope 3 at $DIR/reborrow.rs:+4:12: +4:13
-         _6 = move _4;                    // scope 3 at $DIR/reborrow.rs:+4:12: +4:13
-         _5 = opaque::<&mut u8>(move _6) -> bb1; // scope 3 at $DIR/reborrow.rs:+4:5: +4:14
+         _5 = opaque::<&mut u8>(move _2) -> bb1; // scope 3 at $DIR/reborrow.rs:+4:5: +4:14
                                           // mir::Constant
                                           // + span: $DIR/reborrow.rs:14:5: 14:11
                                           // + literal: Const { ty: fn(&mut u8) {opaque::<&mut u8>}, val: Value(<ZST>) }
      }
  
      bb1: {
-         StorageDead(_6);                 // scope 3 at $DIR/reborrow.rs:+4:13: +4:14
          StorageDead(_5);                 // scope 3 at $DIR/reborrow.rs:+4:14: +4:15
          _0 = const ();                   // scope 0 at $DIR/reborrow.rs:+0:21: +5:2
-         StorageDead(_4);                 // scope 2 at $DIR/reborrow.rs:+5:1: +5:2
          StorageDead(_3);                 // scope 1 at $DIR/reborrow.rs:+5:1: +5:2
-         StorageDead(_2);                 // scope 0 at $DIR/reborrow.rs:+5:1: +5:2
          return;                          // scope 0 at $DIR/reborrow.rs:+5:2: +5:2
      }
  }