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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 _10: std::slice::Iter<'_, T>;
let mut _11: std::iter::Rev<std::slice::Iter<'_, T>>;
let mut _12: std::iter::Rev<std::slice::Iter<'_, T>>;
let mut _33: std::option::Option<&T>;
let mut _35: &impl Fn(&T);
let mut _36: (&T,);
let _37: ();
scope 1 {
debug iter => _12;
let _34: &T;
scope 2 {
debug x => _34;
}
scope 18 (inlined <Rev<std::slice::Iter<'_, T>> as Iterator>::next) {
scope 19 (inlined <std::slice::Iter<'_, T> as DoubleEndedIterator>::next_back) {
let mut _13: *const T;
let mut _18: bool;
let mut _19: *const T;
let _32: &T;
scope 20 {
let _14: std::ptr::NonNull<T>;
let _20: usize;
scope 21 {
}
scope 22 {
scope 25 (inlined <NonNull<T> as PartialEq>::eq) {
let mut _15: std::ptr::NonNull<T>;
let mut _16: *mut T;
let mut _17: *mut T;
scope 26 (inlined NonNull::<T>::as_ptr) {
}
scope 27 (inlined NonNull::<T>::as_ptr) {
}
}
}
scope 23 (inlined std::ptr::const_ptr::<impl *const T>::addr) {
scope 24 (inlined std::ptr::const_ptr::<impl *const T>::cast::<()>) {
}
}
}
scope 28 (inlined std::slice::Iter::<'_, T>::next_back_unchecked) {
let _26: std::ptr::NonNull<T>;
scope 29 (inlined std::slice::Iter::<'_, T>::pre_dec_end) {
let mut _21: *mut *const T;
let mut _22: *mut std::ptr::NonNull<T>;
let mut _23: std::ptr::NonNull<T>;
let mut _27: *mut *const T;
let mut _28: *mut usize;
let mut _29: usize;
let mut _30: usize;
scope 30 {
scope 31 {
}
scope 32 {
scope 35 (inlined NonNull::<T>::sub) {
scope 36 (inlined #[track_caller] core::num::<impl isize>::unchecked_neg) {
scope 37 (inlined core::ub_checks::check_language_ub) {
scope 38 (inlined core::ub_checks::check_language_ub::runtime) {
}
}
}
scope 39 (inlined NonNull::<T>::offset) {
let mut _24: *const T;
let mut _25: *const T;
scope 40 (inlined NonNull::<T>::as_ptr) {
}
}
}
}
scope 33 (inlined std::ptr::mut_ptr::<impl *mut *const T>::cast::<usize>) {
}
scope 34 (inlined std::ptr::mut_ptr::<impl *mut *const T>::cast::<NonNull<T>>) {
}
}
}
scope 41 (inlined NonNull::<T>::as_ref::<'_>) {
let _31: *const T;
scope 42 (inlined NonNull::<T>::as_ptr) {
}
scope 43 (inlined std::ptr::mut_ptr::<impl *mut T>::cast_const) {
}
}
}
}
}
}
scope 3 (inlined core::slice::<impl [T]>::iter) {
scope 4 (inlined std::slice::Iter::<'_, T>::new) {
let _3: usize;
let mut _7: *mut T;
let mut _8: *mut T;
scope 5 {
let _6: std::ptr::NonNull<T>;
scope 6 {
let _9: *const T;
scope 7 {
}
scope 11 (inlined std::ptr::without_provenance::<T>) {
scope 12 (inlined without_provenance_mut::<T>) {
}
}
scope 13 (inlined NonNull::<T>::as_ptr) {
}
scope 14 (inlined #[track_caller] std::ptr::mut_ptr::<impl *mut T>::add) {
}
}
scope 8 (inlined NonNull::<[T]>::from_ref) {
let mut _4: *const [T];
}
scope 9 (inlined NonNull::<[T]>::cast::<T>) {
let mut _5: *const T;
scope 10 (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(_10);
StorageLive(_3);
StorageLive(_6);
StorageLive(_9);
StorageLive(_4);
_3 = PtrMetadata(copy _1);
_4 = &raw const (*_1);
StorageLive(_5);
_5 = copy _4 as *const T (PtrToPtr);
_6 = NonNull::<T> { pointer: copy _5 };
StorageDead(_5);
switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb1, otherwise: bb2];
}
bb1: {
StorageLive(_8);
StorageLive(_7);
_7 = copy _4 as *mut T (PtrToPtr);
_8 = Offset(copy _7, copy _3);
StorageDead(_7);
_9 = copy _8 as *const T (PtrToPtr);
StorageDead(_8);
goto -> bb3;
}
bb2: {
_9 = copy _3 as *const T (Transmute);
goto -> bb3;
}
bb3: {
_10 = std::slice::Iter::<'_, T> { ptr: copy _6, end_or_len: copy _9, _marker: const ZeroSized: PhantomData<&T> };
StorageDead(_4);
StorageDead(_9);
StorageDead(_6);
StorageDead(_3);
_11 = Rev::<std::slice::Iter<'_, T>> { iter: copy _10 };
StorageDead(_10);
StorageLive(_12);
_12 = copy _11;
goto -> bb4;
}
bb4: {
StorageLive(_33);
StorageLive(_20);
StorageLive(_19);
StorageLive(_14);
StorageLive(_32);
StorageLive(_18);
switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb5, otherwise: bb6];
}
bb5: {
StorageLive(_13);
_13 = copy ((_12.0: std::slice::Iter<'_, T>).1: *const T);
_14 = copy _13 as std::ptr::NonNull<T> (Transmute);
StorageDead(_13);
StorageLive(_16);
StorageLive(_15);
_15 = copy ((_12.0: std::slice::Iter<'_, T>).0: std::ptr::NonNull<T>);
_16 = copy _15 as *mut T (Transmute);
StorageDead(_15);
StorageLive(_17);
_17 = copy _14 as *mut T (Transmute);
_18 = Eq(copy _16, copy _17);
StorageDead(_17);
StorageDead(_16);
goto -> bb7;
}
bb6: {
_19 = copy ((_12.0: std::slice::Iter<'_, T>).1: *const T);
_20 = copy _19 as usize (Transmute);
_18 = Eq(copy _20, const 0_usize);
goto -> bb7;
}
bb7: {
switchInt(move _18) -> [0: bb8, otherwise: bb17];
}
bb8: {
StorageLive(_26);
StorageLive(_28);
StorageLive(_22);
StorageLive(_23);
switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb9, otherwise: bb12];
}
bb9: {
StorageLive(_21);
_21 = &raw mut ((_12.0: std::slice::Iter<'_, T>).1: *const T);
_22 = copy _21 as *mut std::ptr::NonNull<T> (PtrToPtr);
StorageDead(_21);
_23 = copy (*_22);
switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb10, otherwise: bb11];
}
bb10: {
StorageLive(_25);
StorageLive(_24);
_24 = copy _23 as *const T (Transmute);
_25 = Offset(copy _24, const -1_isize);
StorageDead(_24);
_23 = NonNull::<T> { pointer: copy _25 };
StorageDead(_25);
goto -> bb11;
}
bb11: {
(*_22) = move _23;
_26 = copy (*_22);
goto -> bb13;
}
bb12: {
StorageLive(_27);
_27 = &raw mut ((_12.0: std::slice::Iter<'_, T>).1: *const T);
_28 = copy _27 as *mut usize (PtrToPtr);
StorageDead(_27);
StorageLive(_30);
StorageLive(_29);
_29 = copy (*_28);
_30 = SubUnchecked(move _29, const 1_usize);
StorageDead(_29);
(*_28) = move _30;
StorageDead(_30);
_26 = copy ((_12.0: std::slice::Iter<'_, T>).0: std::ptr::NonNull<T>);
goto -> bb13;
}
bb13: {
StorageDead(_23);
StorageDead(_22);
StorageDead(_28);
StorageLive(_31);
_31 = copy _26 as *const T (Transmute);
_32 = &(*_31);
StorageDead(_31);
StorageDead(_26);
_33 = Option::<&T>::Some(copy _32);
StorageDead(_18);
StorageDead(_32);
StorageDead(_14);
StorageDead(_19);
StorageDead(_20);
_34 = copy ((_33 as Some).0: &T);
StorageLive(_35);
_35 = &_2;
StorageLive(_36);
_36 = (copy _34,);
_37 = <impl Fn(&T) as Fn<(&T,)>>::call(move _35, move _36) -> [return: bb14, unwind: bb15];
}
bb14: {
StorageDead(_36);
StorageDead(_35);
StorageDead(_33);
goto -> bb4;
}
bb15 (cleanup): {
drop(_2) -> [return: bb16, unwind terminate(cleanup)];
}
bb16 (cleanup): {
resume;
}
bb17: {
StorageDead(_18);
StorageDead(_32);
StorageDead(_14);
StorageDead(_19);
StorageDead(_20);
StorageDead(_33);
StorageDead(_12);
drop(_2) -> [return: bb18, unwind continue];
}
bb18: {
return;
}
}
|
