mirror of https://github.com/rust-lang/rust
160 lines
4.3 KiB
Rust
160 lines
4.3 KiB
Rust
// MIR for `reverse_loop` after PreCodegen
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fn reverse_loop(_1: &[T], _2: impl Fn(&T)) -> () {
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debug slice => _1;
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debug f => _2;
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let mut _0: ();
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let mut _11: std::slice::Iter<'_, T>;
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let mut _12: std::iter::Rev<std::slice::Iter<'_, T>>;
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let mut _13: std::iter::Rev<std::slice::Iter<'_, T>>;
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let mut _15: std::option::Option<&T>;
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let mut _16: isize;
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let mut _18: &impl Fn(&T);
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let mut _19: (&T,);
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let _20: ();
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scope 1 {
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debug iter => _13;
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let _17: &T;
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scope 2 {
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debug x => _17;
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}
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scope 17 (inlined <Rev<std::slice::Iter<'_, T>> as Iterator>::next) {
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let mut _14: &mut std::slice::Iter<'_, T>;
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}
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}
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scope 3 (inlined core::slice::<impl [T]>::iter) {
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scope 4 (inlined std::slice::Iter::<'_, T>::new) {
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let _3: usize;
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let mut _7: *mut T;
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let mut _8: *mut T;
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let mut _10: *const T;
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scope 5 {
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let _6: std::ptr::NonNull<T>;
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scope 6 {
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let _9: *const T;
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scope 7 {
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}
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scope 11 (inlined without_provenance::<T>) {
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}
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scope 12 (inlined NonNull::<T>::as_ptr) {
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}
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scope 13 (inlined std::ptr::mut_ptr::<impl *mut T>::add) {
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}
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}
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scope 8 (inlined <NonNull<[T]> as From<&[T]>>::from) {
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let mut _4: *const [T];
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}
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scope 9 (inlined NonNull::<[T]>::cast::<T>) {
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let mut _5: *const T;
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scope 10 (inlined NonNull::<[T]>::as_ptr) {
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}
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}
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}
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}
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}
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scope 14 (inlined <std::slice::Iter<'_, T> as Iterator>::rev) {
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scope 15 (inlined Rev::<std::slice::Iter<'_, T>>::new) {
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}
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}
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scope 16 (inlined <Rev<std::slice::Iter<'_, T>> as IntoIterator>::into_iter) {
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}
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bb0: {
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StorageLive(_11);
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StorageLive(_3);
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StorageLive(_6);
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StorageLive(_4);
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StorageLive(_5);
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_3 = PtrMetadata(copy _1);
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_4 = &raw const (*_1);
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_5 = copy _4 as *const T (PtrToPtr);
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_6 = NonNull::<T> { pointer: copy _5 };
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StorageLive(_9);
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switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb1, otherwise: bb2];
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}
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bb1: {
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StorageLive(_8);
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StorageLive(_7);
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_7 = copy _4 as *mut T (PtrToPtr);
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_8 = Offset(copy _7, copy _3);
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StorageDead(_7);
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_9 = move _8 as *const T (PtrToPtr);
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StorageDead(_8);
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goto -> bb3;
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}
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bb2: {
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_9 = copy _3 as *const T (Transmute);
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goto -> bb3;
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}
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bb3: {
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StorageLive(_10);
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_10 = copy _9;
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_11 = std::slice::Iter::<'_, T> { ptr: copy _6, end_or_len: move _10, _marker: const ZeroSized: PhantomData<&T> };
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StorageDead(_10);
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StorageDead(_9);
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StorageDead(_5);
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StorageDead(_4);
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StorageDead(_6);
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StorageDead(_3);
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_12 = Rev::<std::slice::Iter<'_, T>> { iter: copy _11 };
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StorageDead(_11);
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StorageLive(_13);
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_13 = copy _12;
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goto -> bb4;
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}
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bb4: {
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StorageLive(_15);
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StorageLive(_14);
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_14 = &mut (_13.0: std::slice::Iter<'_, T>);
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_15 = <std::slice::Iter<'_, T> as DoubleEndedIterator>::next_back(move _14) -> [return: bb5, unwind: bb11];
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}
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bb5: {
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StorageDead(_14);
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_16 = discriminant(_15);
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switchInt(move _16) -> [0: bb6, 1: bb8, otherwise: bb10];
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}
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bb6: {
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StorageDead(_15);
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StorageDead(_13);
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drop(_2) -> [return: bb7, unwind continue];
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}
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bb7: {
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return;
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}
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bb8: {
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_17 = copy ((_15 as Some).0: &T);
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StorageLive(_18);
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_18 = &_2;
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StorageLive(_19);
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_19 = (copy _17,);
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_20 = <impl Fn(&T) as Fn<(&T,)>>::call(move _18, move _19) -> [return: bb9, unwind: bb11];
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}
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bb9: {
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StorageDead(_19);
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StorageDead(_18);
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StorageDead(_15);
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goto -> bb4;
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}
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bb10: {
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unreachable;
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}
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bb11 (cleanup): {
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drop(_2) -> [return: bb12, unwind terminate(cleanup)];
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}
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bb12 (cleanup): {
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resume;
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}
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}
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