rust/tests/mir-opt/unreachable_diverging.main.UnreachablePropagation.diff

- // MIR for `main` before UnreachablePropagation
+ // MIR for `main` after UnreachablePropagation
  
  fn main() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/unreachable_diverging.rs:+0:11: +0:11
      let _1: bool;                        // in scope 0 at $DIR/unreachable_diverging.rs:+1:9: +1:10
      let mut _2: std::option::Option<Empty>; // in scope 0 at $DIR/unreachable_diverging.rs:+2:25: +2:32
      let mut _3: isize;                   // in scope 0 at $DIR/unreachable_diverging.rs:+2:12: +2:22
      let _5: ();                          // in scope 0 at $DIR/unreachable_diverging.rs:+3:9: +5:10
      let mut _6: bool;                    // in scope 0 at $DIR/unreachable_diverging.rs:+3:12: +3:13
      let mut _7: !;                       // in scope 0 at $DIR/unreachable_diverging.rs:+6:9: +6:22
      scope 1 {
          debug x => _1;                   // in scope 1 at $DIR/unreachable_diverging.rs:+1:9: +1:10
          scope 2 {
              debug bomb => _4;            // in scope 2 at $DIR/unreachable_diverging.rs:+2:17: +2:21
              let _4: Empty;               // in scope 2 at $DIR/unreachable_diverging.rs:+2:17: +2:21
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/unreachable_diverging.rs:+1:9: +1:10
          _1 = const true;                 // scope 0 at $DIR/unreachable_diverging.rs:+1:13: +1:17
          StorageLive(_2);                 // scope 2 at $DIR/unreachable_diverging.rs:+2:25: +2:32
          _2 = empty() -> bb1;             // scope 2 at $DIR/unreachable_diverging.rs:+2:25: +2:32
                                           // mir::Constant
                                           // + span: $DIR/unreachable_diverging.rs:14:25: 14:30
                                           // + literal: Const { ty: fn() -> Option<Empty> {empty}, val: Value(<ZST>) }
      }
  
      bb1: {
          _3 = discriminant(_2);           // scope 2 at $DIR/unreachable_diverging.rs:+2:12: +2:22
          switchInt(move _3) -> [1: bb2, otherwise: bb6]; // scope 2 at $DIR/unreachable_diverging.rs:+2:12: +2:22
      }
  
      bb2: {
          StorageLive(_4);                 // scope 2 at $DIR/unreachable_diverging.rs:+2:17: +2:21
          _4 = move ((_2 as Some).0: Empty); // scope 2 at $DIR/unreachable_diverging.rs:+2:17: +2:21
          StorageLive(_5);                 // scope 2 at $DIR/unreachable_diverging.rs:+3:9: +5:10
          StorageLive(_6);                 // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
          _6 = _1;                         // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
          switchInt(move _6) -> [0: bb4, otherwise: bb3]; // scope 2 at $DIR/unreachable_diverging.rs:+3:12: +3:13
      }
  
      bb3: {
          _5 = loop_forever() -> bb5;      // scope 2 at $DIR/unreachable_diverging.rs:+4:13: +4:27
                                           // mir::Constant
                                           // + span: $DIR/unreachable_diverging.rs:16:13: 16:25
                                           // + literal: Const { ty: fn() {loop_forever}, val: Value(<ZST>) }
      }
  
      bb4: {
-         _5 = const ();                   // scope 2 at $DIR/unreachable_diverging.rs:+5:10: +5:10
-         goto -> bb5;                     // scope 2 at $DIR/unreachable_diverging.rs:+3:9: +5:10
+         unreachable;                     // scope 2 at $DIR/unreachable_diverging.rs:+3:9: +5:10
      }
  
      bb5: {
-         StorageDead(_6);                 // scope 2 at $DIR/unreachable_diverging.rs:+5:9: +5:10
-         StorageDead(_5);                 // scope 2 at $DIR/unreachable_diverging.rs:+5:9: +5:10
-         StorageLive(_7);                 // scope 2 at $DIR/unreachable_diverging.rs:+6:9: +6:22
          unreachable;                     // scope 2 at $DIR/unreachable_diverging.rs:+6:15: +6:19
      }
  
      bb6: {
          _0 = const ();                   // scope 1 at $DIR/unreachable_diverging.rs:+7:6: +7:6
          StorageDead(_1);                 // scope 0 at $DIR/unreachable_diverging.rs:+8:1: +8:2
          StorageDead(_2);                 // scope 0 at $DIR/unreachable_diverging.rs:+8:1: +8:2
          return;                          // scope 0 at $DIR/unreachable_diverging.rs:+8:2: +8:2
      }
  }