// MIR for `main` after SimplifyCfg-initial

| User Type Annotations
| 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) }, span: $DIR/basic_assignment.rs:18:17: 18:33, inferred_ty: std::option::Option<std::boxed::Box<u32>>
| 1: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) }, span: $DIR/basic_assignment.rs:18:17: 18:33, inferred_ty: std::option::Option<std::boxed::Box<u32>>
|
fn main() -> () {
    let mut _0: ();                      // return place in scope 0 at $DIR/basic_assignment.rs:10:11: 10:11
    let _1: bool;                        // in scope 0 at $DIR/basic_assignment.rs:11:9: 11:17
    let mut _3: bool;                    // in scope 0 at $DIR/basic_assignment.rs:16:16: 16:24
    let mut _6: std::option::Option<std::boxed::Box<u32>>; // in scope 0 at $DIR/basic_assignment.rs:23:14: 23:20
    scope 1 {
        debug nodrop_x => _1;            // in scope 1 at $DIR/basic_assignment.rs:11:9: 11:17
        let _2: bool;                    // in scope 1 at $DIR/basic_assignment.rs:12:9: 12:17
        scope 2 {
            debug nodrop_y => _2;        // in scope 2 at $DIR/basic_assignment.rs:12:9: 12:17
            let _4: std::option::Option<std::boxed::Box<u32>> as UserTypeProjection { base: UserType(0), projs: [] }; // in scope 2 at $DIR/basic_assignment.rs:18:9: 18:15
            scope 3 {
                debug drop_x => _4;      // in scope 3 at $DIR/basic_assignment.rs:18:9: 18:15
                let _5: std::option::Option<std::boxed::Box<u32>>; // in scope 3 at $DIR/basic_assignment.rs:19:9: 19:15
                scope 4 {
                    debug drop_y => _5;  // in scope 4 at $DIR/basic_assignment.rs:19:9: 19:15
                }
            }
        }
    }

    bb0: {
        StorageLive(_1);                 // scope 0 at $DIR/basic_assignment.rs:11:9: 11:17
        _1 = const false;                // scope 0 at $DIR/basic_assignment.rs:11:20: 11:25
        FakeRead(ForLet(None), _1);      // scope 0 at $DIR/basic_assignment.rs:11:9: 11:17
        StorageLive(_2);                 // scope 1 at $DIR/basic_assignment.rs:12:9: 12:17
        StorageLive(_3);                 // scope 2 at $DIR/basic_assignment.rs:16:16: 16:24
        _3 = _1;                         // scope 2 at $DIR/basic_assignment.rs:16:16: 16:24
        _2 = move _3;                    // scope 2 at $DIR/basic_assignment.rs:16:5: 16:24
        StorageDead(_3);                 // scope 2 at $DIR/basic_assignment.rs:16:23: 16:24
        StorageLive(_4);                 // scope 2 at $DIR/basic_assignment.rs:18:9: 18:15
        _4 = Option::<Box<u32>>::None;   // scope 2 at $DIR/basic_assignment.rs:18:36: 18:40
        FakeRead(ForLet(None), _4);      // scope 2 at $DIR/basic_assignment.rs:18:9: 18:15
        AscribeUserType(_4, o, UserTypeProjection { base: UserType(1), projs: [] }); // scope 2 at $DIR/basic_assignment.rs:18:17: 18:33
        StorageLive(_5);                 // scope 3 at $DIR/basic_assignment.rs:19:9: 19:15
        StorageLive(_6);                 // scope 4 at $DIR/basic_assignment.rs:23:14: 23:20
        _6 = move _4;                    // scope 4 at $DIR/basic_assignment.rs:23:14: 23:20
        replace(_5 <- move _6) -> [return: bb1, unwind: bb5]; // scope 4 at $DIR/basic_assignment.rs:23:5: 23:11
    }

    bb1: {
        drop(_6) -> [return: bb2, unwind: bb6]; // scope 4 at $DIR/basic_assignment.rs:23:19: 23:20
    }

    bb2: {
        StorageDead(_6);                 // scope 4 at $DIR/basic_assignment.rs:23:19: 23:20
        _0 = const ();                   // scope 0 at $DIR/basic_assignment.rs:10:11: 24:2
        drop(_5) -> [return: bb3, unwind: bb7]; // scope 3 at $DIR/basic_assignment.rs:24:1: 24:2
    }

    bb3: {
        StorageDead(_5);                 // scope 3 at $DIR/basic_assignment.rs:24:1: 24:2
        drop(_4) -> [return: bb4, unwind: bb8]; // scope 2 at $DIR/basic_assignment.rs:24:1: 24:2
    }

    bb4: {
        StorageDead(_4);                 // scope 2 at $DIR/basic_assignment.rs:24:1: 24:2
        StorageDead(_2);                 // scope 1 at $DIR/basic_assignment.rs:24:1: 24:2
        StorageDead(_1);                 // scope 0 at $DIR/basic_assignment.rs:24:1: 24:2
        return;                          // scope 0 at $DIR/basic_assignment.rs:24:2: 24:2
    }

    bb5 (cleanup): {
        drop(_6) -> bb6;                 // scope 4 at $DIR/basic_assignment.rs:23:19: 23:20
    }

    bb6 (cleanup): {
        drop(_5) -> bb7;                 // scope 3 at $DIR/basic_assignment.rs:24:1: 24:2
    }

    bb7 (cleanup): {
        drop(_4) -> bb8;                 // scope 2 at $DIR/basic_assignment.rs:24:1: 24:2
    }

    bb8 (cleanup): {
        resume;                          // scope 0 at $DIR/basic_assignment.rs:10:1: 24:2
    }
}