rust/src/test/mir-opt/simplify-locals-fixedpoint/rustc.foo.SimplifyLocals.diff

- // MIR for `foo` before SimplifyLocals
+ // MIR for `foo` after SimplifyLocals
  
  fn foo() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/simplify-locals-fixedpoint.rs:3:13: 3:13
      let mut _1: (std::option::Option<u8>, std::option::Option<T>); // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
      let mut _2: std::option::Option<u8>; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
      let mut _3: std::option::Option<T>;  // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
      let mut _4: isize;                   // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
      let mut _5: isize;                   // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
      let _6: u8;                          // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
      let mut _7: bool;                    // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
      let mut _8: u8;                      // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
      scope 1 {
          debug a => _6;                   // in scope 1 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
      }
  
      bb0: {
          StorageLive(_1);                 // bb0[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
          StorageLive(_2);                 // bb0[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
          discriminant(_2) = 0;            // bb0[2]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
          StorageLive(_3);                 // bb0[3]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
          discriminant(_3) = 0;            // bb0[4]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
          (_1.0: std::option::Option<u8>) = move _2; // bb0[5]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
          (_1.1: std::option::Option<T>) = move _3; // bb0[6]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
          StorageDead(_3);                 // bb0[7]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
          StorageDead(_2);                 // bb0[8]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
          _5 = discriminant((_1.0: std::option::Option<u8>)); // bb0[9]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
          switchInt(move _5) -> [1isize: bb2, otherwise: bb1]; // bb0[10]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
      }
  
      bb1: {
          _0 = const ();                   // bb1[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
                                           // ty::Const
                                           // + ty: ()
                                           // + val: Value(Scalar(<ZST>))
                                           // mir::Constant
                                           // + span: $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
                                           // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
          goto -> bb7;                     // bb1[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
      }
  
      bb2: {
          _4 = discriminant((_1.1: std::option::Option<T>)); // bb2[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
          switchInt(move _4) -> [0isize: bb3, otherwise: bb1]; // bb2[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
      }
  
      bb3: {
          StorageLive(_6);                 // bb3[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
          _6 = (((_1.0: std::option::Option<u8>) as Some).0: u8); // bb3[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
          StorageLive(_7);                 // bb3[2]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
          StorageLive(_8);                 // bb3[3]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
          _8 = _6;                         // bb3[4]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
          _7 = Gt(move _8, const 42u8);    // bb3[5]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
                                           // ty::Const
                                           // + ty: u8
                                           // + val: Value(Scalar(0x2a))
                                           // mir::Constant
                                           // + span: $DIR/simplify-locals-fixedpoint.rs:5:16: 5:20
                                           // + literal: Const { ty: u8, val: Value(Scalar(0x2a)) }
          StorageDead(_8);                 // bb3[6]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:19: 5:20
          switchInt(_7) -> [false: bb4, otherwise: bb5]; // bb3[7]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
      }
  
      bb4: {
          _0 = const ();                   // bb4[0]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
                                           // ty::Const
                                           // + ty: ()
                                           // + val: Value(Scalar(<ZST>))
                                           // mir::Constant
                                           // + span: $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
                                           // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
          goto -> bb6;                     // bb4[1]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
      }
  
      bb5: {
          _0 = const ();                   // bb5[0]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:21: 7:10
                                           // ty::Const
                                           // + ty: ()
                                           // + val: Value(Scalar(<ZST>))
                                           // mir::Constant
                                           // + span: $DIR/simplify-locals-fixedpoint.rs:5:21: 7:10
                                           // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
          goto -> bb6;                     // bb5[1]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
      }
  
      bb6: {
          StorageDead(_7);                 // bb6[0]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
          StorageDead(_6);                 // bb6[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
          goto -> bb7;                     // bb6[2]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
      }
  
      bb7: {
          drop(_1) -> bb8;                 // bb7[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
      }
  
      bb8: {
          StorageDead(_1);                 // bb8[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
          return;                          // bb8[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:2: 9:2
      }
  }