rust/tests/mir-opt/pre-codegen/slice_iter.slice_iter_generic_is_empty.PreCodegen.after.panic-unwind.mir

// MIR for `slice_iter_generic_is_empty` after PreCodegen

fn slice_iter_generic_is_empty(_1: &std::slice::Iter<'_, T>) -> bool {
    debug it => _1;
    let mut _0: bool;
    scope 1 (inlined <std::slice::Iter<'_, T> as ExactSizeIterator>::is_empty) {
        let mut _2: *const *const T;
        let mut _3: *const std::ptr::NonNull<T>;
        let mut _8: *const T;
        scope 2 {
            let _4: std::ptr::NonNull<T>;
            let _9: usize;
            scope 3 {
            }
            scope 4 {
                scope 8 (inlined <NonNull<T> as PartialEq>::eq) {
                    let mut _5: std::ptr::NonNull<T>;
                    scope 9 (inlined NonNull::<T>::as_ptr) {
                        let mut _6: *const T;
                    }
                    scope 10 (inlined NonNull::<T>::as_ptr) {
                        let mut _7: *const T;
                    }
                }
            }
            scope 5 (inlined std::ptr::const_ptr::<impl *const T>::addr) {
                scope 6 (inlined std::ptr::const_ptr::<impl *const T>::cast::<()>) {
                }
            }
            scope 7 (inlined std::ptr::const_ptr::<impl *const *const T>::cast::<NonNull<T>>) {
            }
        }
    }

    bb0: {
        StorageLive(_9);
        StorageLive(_8);
        StorageLive(_4);
        switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb1, otherwise: bb2];
    }

    bb1: {
        StorageLive(_3);
        StorageLive(_2);
        _2 = &raw const ((*_1).1: *const T);
        _3 = copy _2 as *const std::ptr::NonNull<T> (PtrToPtr);
        StorageDead(_2);
        _4 = copy (*_3);
        StorageDead(_3);
        StorageLive(_6);
        StorageLive(_7);
        StorageLive(_5);
        _5 = copy ((*_1).0: std::ptr::NonNull<T>);
        _6 = copy (_5.0: *const T);
        StorageDead(_5);
        _7 = copy (_4.0: *const T);
        _0 = Eq(copy _6, copy _7);
        StorageDead(_7);
        StorageDead(_6);
        goto -> bb3;
    }

    bb2: {
        _8 = copy ((*_1).1: *const T);
        _9 = copy _8 as usize (Transmute);
        _0 = Eq(copy _9, const 0_usize);
        goto -> bb3;
    }

    bb3: {
        StorageDead(_4);
        StorageDead(_8);
        StorageDead(_9);
        return;
    }
}