slice_iter_next.mir

fn slice_iter_next(_1: &mut std::slice::Iter<'_, u8>) -> Option<&u8> {
    debug it => _1;                      // in scope 0 at src/main.rs:8:28: 8:30
    let mut _0: std::option::Option<&u8>; // return place in scope 0 at src/main.rs:8:66: 8:80
    scope 1 (inlined <std::slice::Iter<'_, u8> as Iterator>::next) { // at src/main.rs:9:8: 9:14
        debug self => _1;                // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:126:21: 126:30
        let mut _2: *const u8;           // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:135:41: 135:49
        let mut _3: bool;                // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:46
        let mut _4: *const u8;           // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:33
        let mut _5: std::ptr::NonNull<u8>; // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:18
        let mut _6: *const u8;           // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:37: 8:46
        let _7: &u8;                     // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:32: 43:70
        let _8: *const u8;               // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:47: 43:70
        let mut _10: usize;              // in scope 1 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:53: 43:70
        scope 2 {
            scope 3 (inlined ptr::assume_not_null::<u8>) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:135:25: 135:50
                debug ptr => _2;         // in scope 3 at /home/ben/rust/library/core/src/ptr/mod.rs:507:41: 507:44
                let mut _9: bool;        // in scope 3 at /home/ben/rust/library/core/src/ptr/mod.rs:509:33: 509:61
                scope 4 {
                }
            }
            scope 5 (inlined NonNull::<u8>::as_const_ptr) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:19: 8:33
                debug self => _5;        // in scope 5 at /home/ben/rust/library/core/src/ptr/non_null.rs:330:38: 330:42
            }
            scope 6 (inlined std::slice::Iter::<'_, u8>::post_inc_start) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:53: 43:70
                debug self => _1;        // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:77:38: 77:47
                debug offset => _10;     // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:77:49: 77:55
                let mut _11: std::ptr::NonNull<u8>; // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:79:65: 79:73
                let mut _12: *const u8;  // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:59:29: 59:68
                let mut _13: *const u8;  // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:59:29: 59:38
                let mut _14: std::ptr::NonNull<u8>; // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:32: 85:74
                let mut _15: *const u8;  // in scope 6 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:56: 85:71
                scope 7 {
                    debug old => _8;     // in scope 7 at /home/ben/rust/library/core/src/slice/iter/macros.rs:79:21: 79:24
                    scope 9 {
                        scope 17 (inlined ptr::const_ptr::<impl *const u8>::add) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:60: 85:71
                            debug self => _8; // in scope 17 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:915:29: 915:33
                            debug count => _10; // in scope 17 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:915:35: 915:40
                            let mut _19: isize; // in scope 17 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:920:30: 920:44
                            scope 18 {
                                scope 19 (inlined ptr::const_ptr::<impl *const u8>::offset) { // at /home/ben/rust/library/core/src/ptr/const_ptr.rs:920:23: 920:45
                                    debug self => _8; // in scope 19 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:460:32: 460:36
                                    debug count => _19; // in scope 19 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:460:38: 460:43
                                    scope 20 {
                                    }
                                }
                            }
                        }
                    }
                    scope 10 (inlined ptr::const_ptr::<impl *const u8>::cast::<u8>) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:59:39: 59:51
                        debug self => _13; // in scope 10 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:58:26: 58:30
                    }
                    scope 11 (inlined ptr::const_ptr::<impl *const u8>::wrapping_sub) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:59:52: 59:68
                        debug self => _13; // in scope 11 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:1158:31: 1158:35
                        debug count => _10; // in scope 11 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:1158:37: 1158:42
                        let mut _16: isize; // in scope 11 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:1162:30: 1162:61
                        let mut _17: isize; // in scope 11 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:1162:30: 1162:46
                        scope 12 (inlined core::num::<impl isize>::wrapping_neg) { // at /home/ben/rust/library/core/src/ptr/const_ptr.rs:1162:47: 1162:61
                            debug self => _17; // in scope 12 at /home/ben/rust/library/core/src/num/int_macros.rs:1358:35: 1358:39
                            let mut _18: isize; // in scope 12 at /home/ben/rust/library/core/src/num/int_macros.rs:1359:13: 1359:26
                            scope 13 (inlined core::num::<impl isize>::wrapping_sub) { // at /home/ben/rust/library/core/src/num/int_macros.rs:1359:27: 1359:45
                                debug self => _18; // in scope 13 at /home/ben/rust/library/core/src/num/int_macros.rs:1183:35: 1183:39
                                debug rhs => _17; // in scope 13 at /home/ben/rust/library/core/src/num/int_macros.rs:1183:41: 1183:44
                            }
                        }
                        scope 14 (inlined ptr::const_ptr::<impl *const u8>::wrapping_offset) { // at /home/ben/rust/library/core/src/ptr/const_ptr.rs:1162:14: 1162:62
                            debug self => _13; // in scope 14 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:540:34: 540:38
                            debug count => _16; // in scope 14 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:540:40: 540:45
                            scope 15 {
                            }
                        }
                    }
                    scope 16 (inlined ptr::const_ptr::<impl *const u8>::cast::<u8>) { // at /home/ben/rust/library/core/src/slice/iter/macros.rs:59:69: 59:75
                        debug self => _12; // in scope 16 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:58:26: 58:30
                    }
                }
                scope 8 {
                }
            }
        }
    }

    bb0: {
        StorageLive(_7);                 // scope 0 at src/main.rs:9:8: 9:14
        StorageLive(_2);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:135:41: 135:49
        _2 = ((*_1).1: *const u8);       // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:135:41: 135:49
        StorageLive(_9);                 // scope 4 at /home/ben/rust/library/core/src/ptr/mod.rs:509:33: 509:61
        _9 = Ne(_2, const _);            // scope 4 at /home/ben/rust/library/core/src/ptr/mod.rs:509:33: 509:61
                                         // mir::Constant
                                         // + span: /home/ben/rust/library/core/src/ptr/mod.rs:509:40: 509:61
                                         // + literal: Const { ty: *const u8, val: Unevaluated(ptr::assume_not_null::{constant#0}, [u8, *const u8], None) }
        assume(move _9);                 // scope 4 at /home/ben/rust/library/core/src/ptr/mod.rs:509:14: 509:62
        StorageDead(_9);                 // scope 4 at /home/ben/rust/library/core/src/ptr/mod.rs:509:61: 509:62
        StorageDead(_2);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:135:49: 135:50
        StorageLive(_3);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:46
        StorageLive(_4);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:33
        StorageLive(_5);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:18
        _5 = ((*_1).0: std::ptr::NonNull<u8>); // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:18
        _4 = (_5.0: *const u8);          // scope 5 at /home/ben/rust/library/core/src/ptr/non_null.rs:331:9: 331:21
        StorageDead(_5);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:32: 8:33
        StorageLive(_6);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:37: 8:46
        _6 = ((*_1).1: *const u8);       // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:37: 8:46
        _3 = Eq(move _4, move _6);       // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:46
        StorageDead(_6);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:45: 8:46
        StorageDead(_4);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:45: 8:46
        switchInt(move _3) -> [0: bb2, otherwise: bb1]; // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:8:9: 8:46
    }

    bb1: {
        _0 = const Option::<&u8>::None;  // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:138:25: 138:29
                                         // mir::Constant
                                         // + span: no-location
                                         // + literal: Const { ty: Option<&u8>, val: Value(Scalar(0x0000000000000000)) }
        goto -> bb3;                     // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:137:21: 141:22
    }

    bb2: {
        StorageLive(_8);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:47: 43:70
        StorageLive(_10);                // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:53: 43:70
        StorageLive(_11);                // scope 8 at /home/ben/rust/library/core/src/slice/iter/macros.rs:79:65: 79:73
        _11 = ((*_1).0: std::ptr::NonNull<u8>); // scope 8 at /home/ben/rust/library/core/src/slice/iter/macros.rs:79:65: 79:73
        _8 = move (_11.0: *const u8);    // scope 8 at /home/ben/rust/library/core/src/slice/iter/macros.rs:79:50: 79:74
        StorageDead(_11);                // scope 8 at /home/ben/rust/library/core/src/slice/iter/macros.rs:79:73: 79:74
        StorageLive(_14);                // scope 7 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:32: 85:74
        StorageLive(_15);                // scope 9 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:56: 85:71
        StorageLive(_19);                // scope 18 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:920:30: 920:44
        _19 = const 1_isize;             // scope 18 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:920:30: 920:44
        _15 = offset::<u8>(_8, _19) -> [return: bb4, unwind unreachable]; // scope 20 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:465:18: 465:49
                                         // mir::Constant
                                         // + span: /home/ben/rust/library/core/src/ptr/const_ptr.rs:465:18: 465:36
                                         // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(*const u8, isize) -> *const u8 {offset::<u8>}, val: Value(<ZST>) }
    }

    bb3: {
        StorageDead(_3);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:141:21: 141:22
        StorageDead(_7);                 // scope 0 at src/main.rs:9:8: 9:14
        return;                          // scope 0 at src/main.rs:10:2: 10:2
    }

    bb4: {
        StorageDead(_19);                // scope 18 at /home/ben/rust/library/core/src/ptr/const_ptr.rs:920:44: 920:45
        _14 = move _15 as std::ptr::NonNull<u8> (Transmute); // scope 9 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:41: 85:72
        StorageDead(_15);                // scope 9 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:71: 85:72
        ((*_1).0: std::ptr::NonNull<u8>) = move _14; // scope 7 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:21: 85:74
        StorageDead(_14);                // scope 7 at /home/ben/rust/library/core/src/slice/iter/macros.rs:85:73: 85:74
        StorageDead(_10);                // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:53: 43:70
        _7 = &(*_8);                     // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:43:32: 43:70
        _0 = Option::<&u8>::Some(_7);    // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:140:25: 140:52
        StorageDead(_8);                 // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:141:21: 141:22
        goto -> bb3;                     // scope 2 at /home/ben/rust/library/core/src/slice/iter/macros.rs:137:21: 141:22
    }
}