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|
// MIR for `reverse_loop` after PreCodegen
fn reverse_loop(_1: &[T], _2: impl Fn(&T)) -> () {
debug slice => _1;
debug f => _2;
let mut _0: ();
let mut _13: std::slice::Iter<'_, T>;
let mut _14: std::iter::Rev<std::slice::Iter<'_, T>>;
let mut _15: std::iter::Rev<std::slice::Iter<'_, T>>;
let mut _17: std::option::Option<&T>;
let mut _18: isize;
let mut _20: &impl Fn(&T);
let mut _21: (&T,);
let _22: ();
scope 1 {
debug iter => _15;
let _19: &T;
scope 2 {
debug x => _19;
}
scope 18 (inlined <Rev<std::slice::Iter<'_, T>> as Iterator>::next) {
let mut _16: &mut std::slice::Iter<'_, T>;
}
}
scope 3 (inlined core::slice::<impl [T]>::iter) {
scope 4 (inlined std::slice::Iter::<'_, T>::new) {
let _3: usize;
let mut _5: std::ptr::NonNull<[T]>;
let mut _9: *mut T;
let mut _10: *mut T;
let mut _12: *const T;
scope 5 {
let _8: std::ptr::NonNull<T>;
scope 6 {
let _11: *const T;
scope 7 {
}
scope 12 (inlined without_provenance::<T>) {
}
scope 13 (inlined NonNull::<T>::as_ptr) {
}
scope 14 (inlined std::ptr::mut_ptr::<impl *mut T>::add) {
}
}
scope 8 (inlined <NonNull<[T]> as From<&[T]>>::from) {
scope 9 (inlined NonNull::<[T]>::from_ref) {
let mut _4: *const [T];
}
}
scope 10 (inlined NonNull::<[T]>::cast::<T>) {
let mut _6: *mut [T];
let mut _7: *const T;
scope 11 (inlined NonNull::<[T]>::as_ptr) {
}
}
}
}
}
scope 15 (inlined <std::slice::Iter<'_, T> as Iterator>::rev) {
scope 16 (inlined Rev::<std::slice::Iter<'_, T>>::new) {
}
}
scope 17 (inlined <Rev<std::slice::Iter<'_, T>> as IntoIterator>::into_iter) {
}
bb0: {
StorageLive(_13);
StorageLive(_3);
StorageLive(_8);
_3 = PtrMetadata(copy _1);
StorageLive(_5);
StorageLive(_4);
_4 = &raw const (*_1);
_5 = NonNull::<[T]> { pointer: move _4 };
StorageDead(_4);
StorageLive(_6);
StorageLive(_7);
_6 = copy _5 as *mut [T] (Transmute);
_7 = copy _6 as *const T (PtrToPtr);
_8 = NonNull::<T> { pointer: move _7 };
StorageDead(_7);
StorageDead(_6);
StorageDead(_5);
StorageLive(_11);
switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb1, otherwise: bb2];
}
bb1: {
StorageLive(_10);
StorageLive(_9);
_9 = copy _8 as *mut T (Transmute);
_10 = Offset(copy _9, copy _3);
StorageDead(_9);
_11 = move _10 as *const T (PtrToPtr);
StorageDead(_10);
goto -> bb3;
}
bb2: {
_11 = copy _3 as *const T (Transmute);
goto -> bb3;
}
bb3: {
StorageLive(_12);
_12 = copy _11;
_13 = std::slice::Iter::<'_, T> { ptr: copy _8, end_or_len: move _12, _marker: const ZeroSized: PhantomData<&T> };
StorageDead(_12);
StorageDead(_11);
StorageDead(_8);
StorageDead(_3);
_14 = Rev::<std::slice::Iter<'_, T>> { iter: copy _13 };
StorageDead(_13);
StorageLive(_15);
_15 = copy _14;
goto -> bb4;
}
bb4: {
StorageLive(_17);
StorageLive(_16);
_16 = &mut (_15.0: std::slice::Iter<'_, T>);
_17 = <std::slice::Iter<'_, T> as DoubleEndedIterator>::next_back(move _16) -> [return: bb5, unwind unreachable];
}
bb5: {
StorageDead(_16);
_18 = discriminant(_17);
switchInt(move _18) -> [0: bb6, 1: bb8, otherwise: bb10];
}
bb6: {
StorageDead(_17);
StorageDead(_15);
drop(_2) -> [return: bb7, unwind unreachable];
}
bb7: {
return;
}
bb8: {
_19 = copy ((_17 as Some).0: &T);
StorageLive(_20);
_20 = &_2;
StorageLive(_21);
_21 = (copy _19,);
_22 = <impl Fn(&T) as Fn<(&T,)>>::call(move _20, move _21) -> [return: bb9, unwind unreachable];
}
bb9: {
StorageDead(_21);
StorageDead(_20);
StorageDead(_17);
goto -> bb4;
}
bb10: {
unreachable;
}
}
|
