rust/tests/mir-opt/pre-codegen/try_identity.new.PreCodegen.after.mir

// MIR for `new` after PreCodegen

fn new(_1: Result<T, E>) -> Result<T, E> {
    debug x => _1;                       // in scope 0 at $DIR/try_identity.rs:+0:14: +0:15
    let mut _0: std::result::Result<T, E>; // return place in scope 0 at $DIR/try_identity.rs:+0:34: +0:46
    let mut _2: std::ops::ControlFlow<E, T>; // in scope 0 at $DIR/try_identity.rs:+2:15: +7:10
    let mut _3: isize;                   // in scope 0 at $DIR/try_identity.rs:+4:17: +4:22
    let _4: T;                           // in scope 0 at $DIR/try_identity.rs:+4:20: +4:21
    let _5: E;                           // in scope 0 at $DIR/try_identity.rs:+5:21: +5:22
    let mut _6: isize;                   // in scope 0 at $DIR/try_identity.rs:+8:13: +8:37
    let _7: T;                           // in scope 0 at $DIR/try_identity.rs:+8:35: +8:36
    let _8: E;                           // in scope 0 at $DIR/try_identity.rs:+9:32: +9:33
    scope 1 {
        debug v => _4;                   // in scope 1 at $DIR/try_identity.rs:+4:20: +4:21
    }
    scope 2 {
        debug e => _5;                   // in scope 2 at $DIR/try_identity.rs:+5:21: +5:22
    }
    scope 3 {
        debug v => _7;                   // in scope 3 at $DIR/try_identity.rs:+8:35: +8:36
    }
    scope 4 {
        debug e => _8;                   // in scope 4 at $DIR/try_identity.rs:+9:32: +9:33
    }

    bb0: {
        StorageLive(_2);                 // scope 0 at $DIR/try_identity.rs:+2:15: +7:10
        _3 = discriminant(_1);           // scope 0 at $DIR/try_identity.rs:+3:19: +3:20
        switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2]; // scope 0 at $DIR/try_identity.rs:+3:13: +3:20
    }

    bb1: {
        _5 = move ((_1 as Err).0: E);    // scope 0 at $DIR/try_identity.rs:+5:21: +5:22
        _2 = ControlFlow::<E, T>::Break(move _5); // scope 2 at $DIR/try_identity.rs:+5:27: +5:48
        goto -> bb4;                     // scope 0 at $DIR/try_identity.rs:+5:47: +5:48
    }

    bb2: {
        unreachable;                     // scope 0 at $DIR/try_identity.rs:+3:19: +3:20
    }

    bb3: {
        _4 = move ((_1 as Ok).0: T);     // scope 0 at $DIR/try_identity.rs:+4:20: +4:21
        _2 = ControlFlow::<E, T>::Continue(move _4); // scope 1 at $DIR/try_identity.rs:+4:26: +4:50
        goto -> bb4;                     // scope 0 at $DIR/try_identity.rs:+4:49: +4:50
    }

    bb4: {
        _6 = discriminant(_2);           // scope 0 at $DIR/try_identity.rs:+2:15: +7:10
        switchInt(move _6) -> [0: bb6, 1: bb5, otherwise: bb2]; // scope 0 at $DIR/try_identity.rs:+2:9: +7:10
    }

    bb5: {
        _8 = move ((_2 as Break).0: E);  // scope 0 at $DIR/try_identity.rs:+9:32: +9:33
        _0 = Result::<T, E>::Err(move _8); // scope 4 at $DIR/try_identity.rs:+9:45: +9:51
        StorageDead(_2);                 // scope 0 at $DIR/try_identity.rs:+12:1: +12:2
        goto -> bb7;                     // scope 0 at $DIR/try_identity.rs:+12:1: +12:2
    }

    bb6: {
        _7 = move ((_2 as Continue).0: T); // scope 0 at $DIR/try_identity.rs:+8:35: +8:36
        _0 = Result::<T, E>::Ok(move _7); // scope 0 at $DIR/try_identity.rs:+1:5: +11:6
        StorageDead(_2);                 // scope 0 at $DIR/try_identity.rs:+12:1: +12:2
        goto -> bb7;                     // scope 0 at $DIR/try_identity.rs:+12:1: +12:2
    }

    bb7: {
        return;                          // scope 0 at $DIR/try_identity.rs:+12:2: +12:2
    }
}