os-rust/src/test/mir-opt/derefer_terminator_test.main.Derefer.diff

- // MIR for `main` before Derefer
+ // MIR for `main` after Derefer
  
  fn main() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/derefer_terminator_test.rs:4:11: 4:11
      let _1: bool;                        // in scope 0 at $DIR/derefer_terminator_test.rs:5:9: 5:10
      let _3: ();                          // in scope 0 at $DIR/derefer_terminator_test.rs:7:5: 10:6
      let mut _4: &&&&bool;                // in scope 0 at $DIR/derefer_terminator_test.rs:7:15: 7:22
      let _5: &&&bool;                     // in scope 0 at $DIR/derefer_terminator_test.rs:7:17: 7:21
      let _6: &&bool;                      // in scope 0 at $DIR/derefer_terminator_test.rs:7:18: 7:21
      let _7: &bool;                       // in scope 0 at $DIR/derefer_terminator_test.rs:7:19: 7:21
+     let mut _10: &&&bool;                // in scope 0 at $DIR/derefer_terminator_test.rs:7:15: 7:22
+     let mut _11: &&bool;                 // in scope 0 at $DIR/derefer_terminator_test.rs:7:15: 7:22
+     let mut _12: &bool;                  // in scope 0 at $DIR/derefer_terminator_test.rs:7:15: 7:22
      scope 1 {
          debug b => _1;                   // in scope 1 at $DIR/derefer_terminator_test.rs:5:9: 5:10
          let _2: bool;                    // in scope 1 at $DIR/derefer_terminator_test.rs:6:9: 6:10
          scope 2 {
              debug d => _2;               // in scope 2 at $DIR/derefer_terminator_test.rs:6:9: 6:10
              let _8: i32;                 // in scope 2 at $DIR/derefer_terminator_test.rs:8:22: 8:23
              let _9: i32;                 // in scope 2 at $DIR/derefer_terminator_test.rs:11:9: 11:10
              scope 3 {
                  debug x => _8;           // in scope 3 at $DIR/derefer_terminator_test.rs:8:22: 8:23
              }
              scope 4 {
                  debug y => _9;           // in scope 4 at $DIR/derefer_terminator_test.rs:11:9: 11:10
              }
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/derefer_terminator_test.rs:5:9: 5:10
          _1 = foo() -> bb1;               // scope 0 at $DIR/derefer_terminator_test.rs:5:13: 5:18
                                           // mir::Constant
                                           // + span: $DIR/derefer_terminator_test.rs:5:13: 5:16
                                           // + literal: Const { ty: fn() -> bool {foo}, val: Value(<ZST>) }
      }
  
      bb1: {
          StorageLive(_2);                 // scope 1 at $DIR/derefer_terminator_test.rs:6:9: 6:10
          _2 = foo() -> bb2;               // scope 1 at $DIR/derefer_terminator_test.rs:6:13: 6:18
                                           // mir::Constant
                                           // + span: $DIR/derefer_terminator_test.rs:6:13: 6:16
                                           // + literal: Const { ty: fn() -> bool {foo}, val: Value(<ZST>) }
      }
  
      bb2: {
          StorageLive(_3);                 // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 10:6
          StorageLive(_4);                 // scope 2 at $DIR/derefer_terminator_test.rs:7:15: 7:22
          StorageLive(_5);                 // scope 2 at $DIR/derefer_terminator_test.rs:7:17: 7:21
          StorageLive(_6);                 // scope 2 at $DIR/derefer_terminator_test.rs:7:18: 7:21
          StorageLive(_7);                 // scope 2 at $DIR/derefer_terminator_test.rs:7:19: 7:21
          _7 = &_1;                        // scope 2 at $DIR/derefer_terminator_test.rs:7:19: 7:21
          _6 = &_7;                        // scope 2 at $DIR/derefer_terminator_test.rs:7:18: 7:21
          _5 = &_6;                        // scope 2 at $DIR/derefer_terminator_test.rs:7:17: 7:21
          _4 = &_5;                        // scope 2 at $DIR/derefer_terminator_test.rs:7:15: 7:22
-         switchInt((*(*(*(*_4))))) -> [false: bb3, otherwise: bb4]; // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         StorageLive(_10);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         _10 = deref_copy (*_4);          // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         StorageLive(_11);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         _11 = deref_copy (*_10);         // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         StorageDead(_10);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         StorageLive(_12);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         _12 = deref_copy (*_11);         // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         StorageDead(_11);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
+         switchInt((*_12)) -> [false: bb3, otherwise: bb4]; // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
      }
  
      bb3: {
+         StorageDead(_12);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
          _3 = const ();                   // scope 2 at $DIR/derefer_terminator_test.rs:9:18: 9:20
          goto -> bb5;                     // scope 2 at $DIR/derefer_terminator_test.rs:9:18: 9:20
      }
  
      bb4: {
+         StorageDead(_12);                // scope 2 at $DIR/derefer_terminator_test.rs:7:5: 7:22
          StorageLive(_8);                 // scope 2 at $DIR/derefer_terminator_test.rs:8:22: 8:23
          _8 = const 5_i32;                // scope 2 at $DIR/derefer_terminator_test.rs:8:26: 8:27
          _3 = const ();                   // scope 2 at $DIR/derefer_terminator_test.rs:8:17: 8:29
          StorageDead(_8);                 // scope 2 at $DIR/derefer_terminator_test.rs:8:28: 8:29
          goto -> bb5;                     // scope 2 at $DIR/derefer_terminator_test.rs:8:28: 8:29
      }
  
      bb5: {
          StorageDead(_7);                 // scope 2 at $DIR/derefer_terminator_test.rs:10:5: 10:6
          StorageDead(_6);                 // scope 2 at $DIR/derefer_terminator_test.rs:10:5: 10:6
          StorageDead(_5);                 // scope 2 at $DIR/derefer_terminator_test.rs:10:5: 10:6
          StorageDead(_4);                 // scope 2 at $DIR/derefer_terminator_test.rs:10:5: 10:6
          StorageDead(_3);                 // scope 2 at $DIR/derefer_terminator_test.rs:10:5: 10:6
          StorageLive(_9);                 // scope 2 at $DIR/derefer_terminator_test.rs:11:9: 11:10
          _9 = const 42_i32;               // scope 2 at $DIR/derefer_terminator_test.rs:11:13: 11:15
          _0 = const ();                   // scope 0 at $DIR/derefer_terminator_test.rs:4:11: 12:2
          StorageDead(_9);                 // scope 2 at $DIR/derefer_terminator_test.rs:12:1: 12:2
          StorageDead(_2);                 // scope 1 at $DIR/derefer_terminator_test.rs:12:1: 12:2
          StorageDead(_1);                 // scope 0 at $DIR/derefer_terminator_test.rs:12:1: 12:2
          return;                          // scope 0 at $DIR/derefer_terminator_test.rs:12:2: 12:2
+     }
+ 
+     bb6 (cleanup): {
+         resume;                          // scope 0 at $DIR/derefer_terminator_test.rs:4:1: 12:2
      }
  }