- // MIR for `exhaustive_match_i8` before MatchBranchSimplification
+ // MIR for `exhaustive_match_i8` after MatchBranchSimplification
  
  fn exhaustive_match_i8(_1: E) -> i8 {
      debug e => _1;                       // in scope 0 at $DIR/matches_u8.rs:+0:28: +0:29
      let mut _0: i8;                      // return place in scope 0 at $DIR/matches_u8.rs:+0:37: +0:39
      let mut _2: isize;                   // in scope 0 at $DIR/matches_u8.rs:+2:9: +2:13
  
      bb0: {
          _2 = discriminant(_1);           // scope 0 at $DIR/matches_u8.rs:+1:11: +1:12
          switchInt(move _2) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/matches_u8.rs:+1:5: +1:12
      }
  
      bb1: {
          _0 = const 1_i8;                 // scope 0 at $DIR/matches_u8.rs:+3:17: +3:18
          goto -> bb4;                     // scope 0 at $DIR/matches_u8.rs:+3:17: +3:18
      }
  
      bb2: {
          unreachable;                     // scope 0 at $DIR/matches_u8.rs:+1:11: +1:12
      }
  
      bb3: {
          _0 = const 0_i8;                 // scope 0 at $DIR/matches_u8.rs:+2:17: +2:18
          goto -> bb4;                     // scope 0 at $DIR/matches_u8.rs:+2:17: +2:18
      }
  
      bb4: {
          return;                          // scope 0 at $DIR/matches_u8.rs:+5:2: +5:2
      }
  }