rust/tests/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff

- // MIR for `opt2` before EarlyOtherwiseBranch
+ // MIR for `opt2` after EarlyOtherwiseBranch
  
  fn opt2(_1: Option<u32>, _2: Option<u32>) -> u32 {
      debug x => _1;
      debug y => _2;
      let mut _0: u32;
      let mut _3: (std::option::Option<u32>, std::option::Option<u32>);
      let mut _4: std::option::Option<u32>;
      let mut _5: std::option::Option<u32>;
      let mut _6: isize;
      let mut _7: isize;
      let mut _8: isize;
      let _9: u32;
      let _10: u32;
+     let mut _11: isize;
+     let mut _12: bool;
      scope 1 {
          debug a => _9;
          debug b => _10;
      }
  
      bb0: {
          StorageLive(_3);
          StorageLive(_4);
          _4 = _1;
          StorageLive(_5);
          _5 = _2;
          _3 = (move _4, move _5);
          StorageDead(_5);
          StorageDead(_4);
          _8 = discriminant((_3.0: std::option::Option<u32>));
-         switchInt(move _8) -> [0: bb1, 1: bb3, otherwise: bb2];
+         StorageLive(_11);
+         _11 = discriminant((_3.1: std::option::Option<u32>));
+         StorageLive(_12);
+         _12 = Ne(_8, move _11);
+         StorageDead(_11);
+         switchInt(move _12) -> [0: bb5, otherwise: bb1];
      }
  
      bb1: {
-         _6 = discriminant((_3.1: std::option::Option<u32>));
-         switchInt(move _6) -> [0: bb5, otherwise: bb2];
-     }
- 
-     bb2: {
+         StorageDead(_12);
          _0 = const 1_u32;
-         goto -> bb6;
+         goto -> bb4;
      }
  
-     bb3: {
-         _7 = discriminant((_3.1: std::option::Option<u32>));
-         switchInt(move _7) -> [1: bb4, otherwise: bb2];
-     }
- 
-     bb4: {
+     bb2: {
          StorageLive(_10);
          _10 = (((_3.1: std::option::Option<u32>) as Some).0: u32);
          StorageLive(_9);
          _9 = (((_3.0: std::option::Option<u32>) as Some).0: u32);
          _0 = const 0_u32;
          StorageDead(_9);
          StorageDead(_10);
-         goto -> bb6;
+         goto -> bb4;
      }
  
-     bb5: {
+     bb3: {
          _0 = const 0_u32;
-         goto -> bb6;
+         goto -> bb4;
      }
  
-     bb6: {
+     bb4: {
          StorageDead(_3);
          return;
+     }
+ 
+     bb5: {
+         StorageDead(_12);
+         switchInt(_8) -> [0: bb3, 1: bb2, otherwise: bb1];
      }
  }