- // MIR for `poll` before EarlyOtherwiseBranch
+ // MIR for `poll` after EarlyOtherwiseBranch
  
  fn poll(_1: Poll<Result<Option<Vec<u8>>, u8>>) -> () {
      debug val => _1;
      let mut _0: ();
      let mut _2: isize;
      let mut _3: isize;
      let mut _4: isize;
      let _5: std::vec::Vec<u8>;
      let _6: u8;
      let mut _7: bool;
      let mut _8: bool;
      let mut _9: isize;
      scope 1 {
          debug _trailers => _5;
      }
      scope 2 {
          debug _err => _6;
      }
  
      bb0: {
          _7 = const false;
          _8 = const false;
          _7 = const true;
          _8 = const true;
          _4 = discriminant(_1);
          switchInt(copy _4) -> [0: bb2, 1: bb4, otherwise: bb1];
      }
  
      bb1: {
          unreachable;
      }
  
      bb2: {
          _3 = discriminant(((_1 as Ready).0: std::result::Result<std::option::Option<std::vec::Vec<u8>>, u8>));
          switchInt(copy _3) -> [0: bb3, 1: bb6, otherwise: bb1];
      }
  
      bb3: {
          _2 = discriminant(((((_1 as Ready).0: std::result::Result<std::option::Option<std::vec::Vec<u8>>, u8>) as Ok).0: std::option::Option<std::vec::Vec<u8>>));
          switchInt(copy _2) -> [0: bb5, 1: bb7, otherwise: bb1];
      }
  
      bb4: {
          _0 = const ();
          goto -> bb17;
      }
  
      bb5: {
          _0 = const ();
          goto -> bb17;
      }
  
      bb6: {
          StorageLive(_6);
          _6 = copy ((((_1 as Ready).0: std::result::Result<std::option::Option<std::vec::Vec<u8>>, u8>) as Err).0: u8);
          _0 = const ();
          StorageDead(_6);
          goto -> bb17;
      }
  
      bb7: {
          StorageLive(_5);
          _5 = move ((((((_1 as Ready).0: std::result::Result<std::option::Option<std::vec::Vec<u8>>, u8>) as Ok).0: std::option::Option<std::vec::Vec<u8>>) as Some).0: std::vec::Vec<u8>);
          _0 = const ();
          drop(_5) -> [return: bb8, unwind: bb20];
      }
  
      bb8: {
          StorageDead(_5);
          goto -> bb17;
      }
  
      bb9 (cleanup): {
          resume;
      }
  
      bb10: {
          return;
      }
  
      bb11: {
          switchInt(copy _7) -> [0: bb12, otherwise: bb16];
      }
  
      bb12: {
          _7 = const false;
          goto -> bb10;
      }
  
      bb13: {
          switchInt(copy _8) -> [0: bb14, otherwise: bb15];
      }
  
      bb14: {
          _8 = const false;
          goto -> bb12;
      }
  
      bb15: {
          goto -> bb14;
      }
  
      bb16: {
          _9 = discriminant(((_1 as Ready).0: std::result::Result<std::option::Option<std::vec::Vec<u8>>, u8>));
          switchInt(move _9) -> [0: bb13, otherwise: bb12];
      }
  
      bb17: {
          switchInt(copy _4) -> [0: bb11, otherwise: bb10];
      }
  
      bb18 (cleanup): {
          switchInt(copy _3) -> [0: bb19, otherwise: bb9];
      }
  
      bb19 (cleanup): {
          goto -> bb9;
      }
  
      bb20 (cleanup): {
          switchInt(copy _4) -> [0: bb18, otherwise: bb9];
      }
  }