rust/tests/mir-opt/separate_const_switch.identity.SeparateConstSwitch.diff

- // MIR for `identity` before SeparateConstSwitch
+ // MIR for `identity` after SeparateConstSwitch
  
  fn identity(_1: Result<i32, i32>) -> Result<i32, i32> {
      debug x => _1;
      let mut _0: std::result::Result<i32, i32>;
      let mut _2: std::ops::ControlFlow<std::result::Result<std::convert::Infallible, i32>, i32>;
      let mut _3: std::result::Result<i32, i32>;
      let mut _4: isize;
      let _5: std::result::Result<std::convert::Infallible, i32>;
      let mut _6: std::result::Result<std::convert::Infallible, i32>;
      let _7: i32;
      scope 1 {
          debug residual => _5;
          scope 2 {
              scope 8 (inlined #[track_caller] <Result<i32, i32> as FromResidual<Result<Infallible, i32>>>::from_residual) {
                  debug residual => _6;
                  let _12: i32;
                  scope 9 {
                      debug e => _12;
                      scope 10 (inlined <i32 as From<i32>>::from) {
                          debug t => _12;
                      }
                  }
              }
          }
      }
      scope 3 {
          debug val => _7;
          scope 4 {
          }
      }
      scope 5 (inlined <Result<i32, i32> as Try>::branch) {
          debug self => _3;
          let mut _8: isize;
          let _9: i32;
          let _10: i32;
          let mut _11: std::result::Result<std::convert::Infallible, i32>;
          scope 6 {
              debug v => _9;
          }
          scope 7 {
              debug e => _10;
          }
      }
  
      bb0: {
          StorageLive(_2);
          StorageLive(_3);
          _3 = _1;
          StorageLive(_8);
          StorageLive(_9);
          StorageLive(_10);
          _8 = discriminant(_1);
          switchInt(move _8) -> [0: bb5, 1: bb4, otherwise: bb6];
      }
  
      bb1: {
          _7 = ((_2 as Continue).0: i32);
          _0 = Result::<i32, i32>::Ok(_7);
          StorageDead(_2);
          return;
      }
  
      bb2: {
          _5 = ((_2 as Break).0: std::result::Result<std::convert::Infallible, i32>);
          StorageLive(_6);
          _6 = _5;
          _12 = move ((_5 as Err).0: i32);
          _0 = Result::<i32, i32>::Err(_12);
          StorageDead(_6);
          StorageDead(_2);
          return;
      }
  
      bb3: {
          StorageDead(_10);
          StorageDead(_9);
          StorageDead(_8);
          StorageDead(_3);
          _4 = discriminant(_2);
          switchInt(move _4) -> [0: bb1, 1: bb2, otherwise: bb6];
      }
  
      bb4: {
          _10 = move ((_1 as Err).0: i32);
          StorageLive(_11);
          _11 = Result::<Infallible, i32>::Err(_10);
          _2 = ControlFlow::<Result<Infallible, i32>, i32>::Break(move _11);
          StorageDead(_11);
          goto -> bb3;
      }
  
      bb5: {
          _9 = move ((_1 as Ok).0: i32);
          _2 = ControlFlow::<Result<Infallible, i32>, i32>::Continue(_9);
          goto -> bb3;
      }
  
      bb6: {
          unreachable;
      }
  }