src/test/mir-opt/dest-prop/simple.nrvo.DestinationPropagation.diff

   1 - // MIR for `nrvo` before DestinationPropagation
   2 + // MIR for `nrvo` after DestinationPropagation
   3
   4   fn nrvo(_1: for<'r> fn(&'r mut [u8; 1024])) -> [u8; 1024] {
   5       debug init => _1;                    // in scope 0 at $DIR/simple.rs:4:9: 4:13
   6       let mut _0: [u8; 1024];              // return place in scope 0 at $DIR/simple.rs:4:39: 4:49
   7       let mut _2: [u8; 1024];              // in scope 0 at $DIR/simple.rs:5:9: 5:16
   8       let _3: ();                          // in scope 0 at $DIR/simple.rs:6:5: 6:19
   9       let mut _4: for<'r> fn(&'r mut [u8; 1024]); // in scope 0 at $DIR/simple.rs:6:5: 6:9
  10       let mut _5: &mut [u8; 1024];         // in scope 0 at $DIR/simple.rs:6:10: 6:18
  11       let mut _6: &mut [u8; 1024];         // in scope 0 at $DIR/simple.rs:6:10: 6:18
  12       scope 1 {
  13           debug buf => _2;                 // in scope 1 at $DIR/simple.rs:5:9: 5:16
  14       }
  15
  16       bb0: {
  17           StorageLive(_2);                 // scope 0 at $DIR/simple.rs:5:9: 5:16
  18           _2 = [const 0_u8; 1024];         // scope 0 at $DIR/simple.rs:5:19: 5:28
  19           StorageLive(_3);                 // scope 1 at $DIR/simple.rs:6:5: 6:19
  20           StorageLive(_4);                 // scope 1 at $DIR/simple.rs:6:5: 6:9
  21           _4 = _1;                         // scope 1 at $DIR/simple.rs:6:5: 6:9
  22           StorageLive(_5);                 // scope 1 at $DIR/simple.rs:6:10: 6:18
  23           StorageLive(_6);                 // scope 1 at $DIR/simple.rs:6:10: 6:18
  24           _6 = &mut _2;                    // scope 1 at $DIR/simple.rs:6:10: 6:18
  25           _5 = &mut (*_6);                 // scope 1 at $DIR/simple.rs:6:10: 6:18
  26           _3 = move _4(move _5) -> bb1;    // scope 1 at $DIR/simple.rs:6:5: 6:19
  27       }
  28
  29       bb1: {
  30           StorageDead(_5);                 // scope 1 at $DIR/simple.rs:6:18: 6:19
  31           StorageDead(_4);                 // scope 1 at $DIR/simple.rs:6:18: 6:19
  32           StorageDead(_6);                 // scope 1 at $DIR/simple.rs:6:19: 6:20
  33           StorageDead(_3);                 // scope 1 at $DIR/simple.rs:6:19: 6:20
  34           _0 = _2;                         // scope 1 at $DIR/simple.rs:7:5: 7:8
  35           StorageDead(_2);                 // scope 0 at $DIR/simple.rs:8:1: 8:2
  36           return;                          // scope 0 at $DIR/simple.rs:8:2: 8:2
  37       }
  38   }
  39