Auto merge of #111447 - scottmcm:remove-more-assumes, r=thomcc
Remove useless `assume`s from `slice::iter(_mut)` You were right in https://github.com/rust-lang/rust/pull/111395#discussion_r1190312704, r? `@the8472` LLVM already removes these assumes while optimizing, as can be seen in <https://rust.godbolt.org/z/KTfWKbdEM>.
This commit is contained in:
bors
commit
16d3e18281
@ -90,8 +90,6 @@ impl<'a, T> Iter<'a, T> {
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let ptr = slice.as_ptr();
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// SAFETY: Similar to `IterMut::new`.
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unsafe {
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assume(!ptr.is_null());
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let end = if T::IS_ZST { invalid(slice.len()) } else { ptr.add(slice.len()) };
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Self { ptr: NonNull::new_unchecked(ptr as *mut T), end, _marker: PhantomData }
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@ -228,8 +226,6 @@ impl<'a, T> IterMut<'a, T> {
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// See the `next_unchecked!` and `is_empty!` macros as well as the
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// `post_inc_start` method for more information.
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unsafe {
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assume(!ptr.is_null());
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let end = if T::IS_ZST { invalid_mut(slice.len()) } else { ptr.add(slice.len()) };
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Self { ptr: NonNull::new_unchecked(ptr), end, _marker: PhantomData }
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@ -40,3 +40,38 @@ pub fn slice_iter_next_back<'a>(it: &mut std::slice::Iter<'a, u32>) -> Option<&'
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it.next_back()
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}
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// The slice iterator `new` methods used to `assume` that the pointer is non-null,
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// but passing slices already requires that, to the extent that LLVM actually
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// removed the `call @llvm.assume` anyway. These tests just demonstrate that the
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// attribute is there, and confirms adding the assume back doesn't do anything.
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// CHECK-LABEL: @slice_iter_new
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// CHECK-SAME: (ptr noalias noundef nonnull {{.+}} %slice.0, {{.+}} noundef %slice.1)
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#[no_mangle]
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pub fn slice_iter_new(slice: &[u32]) -> std::slice::Iter<'_, u32> {
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// CHECK-NOT: slice
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// CHECK: %[[END:.+]] = getelementptr inbounds i32{{.+}} %slice.0{{.+}} %slice.1
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// CHECK-NOT: slice
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// CHECK: insertvalue {{.+}} ptr %slice.0, 0
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// CHECK-NOT: slice
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// CHECK: insertvalue {{.+}} ptr %[[END]], 1
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// CHECK-NOT: slice
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// CHECK: }
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slice.iter()
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}
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// CHECK-LABEL: @slice_iter_mut_new
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// CHECK-SAME: (ptr noalias noundef nonnull {{.+}} %slice.0, {{.+}} noundef %slice.1)
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#[no_mangle]
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pub fn slice_iter_mut_new(slice: &mut [u32]) -> std::slice::IterMut<'_, u32> {
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// CHECK-NOT: slice
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// CHECK: %[[END:.+]] = getelementptr inbounds i32{{.+}} %slice.0{{.+}} %slice.1
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// CHECK-NOT: slice
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// CHECK: insertvalue {{.+}} ptr %slice.0, 0
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// CHECK-NOT: slice
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// CHECK: insertvalue {{.+}} ptr %[[END]], 1
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// CHECK-NOT: slice
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// CHECK: }
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slice.iter_mut()
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}
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@ -6,58 +6,120 @@ fn forward_loop(_1: &[T], _2: impl Fn(&T)) -> () {
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let mut _0: (); // return place in scope 0 at $DIR/slice_iter.rs:+0:60: +0:60
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let mut _3: std::slice::Iter<'_, T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _4: std::slice::Iter<'_, T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _5: std::slice::Iter<'_, T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let _6: (); // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _7: std::option::Option<&T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _8: &mut std::slice::Iter<'_, T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _9: isize; // in scope 0 at $DIR/slice_iter.rs:+1:5: +3:6
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let mut _11: &impl Fn(&T); // in scope 0 at $DIR/slice_iter.rs:+2:9: +2:10
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let mut _12: (&T,); // in scope 0 at $DIR/slice_iter.rs:+2:9: +2:13
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let _5: (); // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _6: std::option::Option<&T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _7: &mut std::slice::Iter<'_, T>; // in scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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let mut _8: isize; // in scope 0 at $DIR/slice_iter.rs:+1:5: +3:6
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let mut _10: &impl Fn(&T); // in scope 0 at $DIR/slice_iter.rs:+2:9: +2:10
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let mut _11: (&T,); // in scope 0 at $DIR/slice_iter.rs:+2:9: +2:13
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scope 1 {
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debug iter => _5; // in scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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let _10: &T; // in scope 1 at $DIR/slice_iter.rs:+1:9: +1:10
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debug iter => _4; // in scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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let _9: &T; // in scope 1 at $DIR/slice_iter.rs:+1:9: +1:10
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scope 2 {
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debug x => _10; // in scope 2 at $DIR/slice_iter.rs:+1:9: +1:10
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debug x => _9; // in scope 2 at $DIR/slice_iter.rs:+1:9: +1:10
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}
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}
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scope 3 (inlined core::slice::<impl [T]>::iter) { // at $DIR/slice_iter.rs:28:20: 28:26
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debug self => _1; // in scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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scope 4 (inlined std::slice::Iter::<'_, T>::new) { // at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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debug slice => _1; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let _12: *const T; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let mut _14: bool; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let mut _15: usize; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let mut _16: usize; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let mut _17: std::ptr::NonNull<T>; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let mut _18: *mut T; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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let mut _19: *const T; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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scope 5 {
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debug ptr => _12; // in scope 5 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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scope 6 {
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let _13: *const T; // in scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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scope 7 {
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debug end => _13; // in scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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scope 13 (inlined NonNull::<T>::new_unchecked) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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debug ptr => _18; // in scope 13 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
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let mut _21: *const T; // in scope 13 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
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let mut _22: *mut T; // in scope 13 at $SRC_DIR/core/src/intrinsics.rs:LL:COL
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scope 14 {
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scope 15 (inlined NonNull::<T>::new_unchecked::runtime::<T>) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
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debug ptr => _22; // in scope 15 at $SRC_DIR/core/src/intrinsics.rs:LL:COL
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scope 16 (inlined ptr::mut_ptr::<impl *mut T>::is_null) { // at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
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debug self => _22; // in scope 16 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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let mut _23: *mut u8; // in scope 16 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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scope 17 {
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scope 18 (inlined ptr::mut_ptr::<impl *mut T>::is_null::runtime_impl) { // at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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debug ptr => _23; // in scope 18 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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scope 19 (inlined ptr::mut_ptr::<impl *mut u8>::addr) { // at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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debug self => _23; // in scope 19 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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scope 20 {
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scope 21 (inlined ptr::mut_ptr::<impl *mut u8>::cast::<()>) { // at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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debug self => _23; // in scope 21 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
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}
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}
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}
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}
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}
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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 9 (inlined invalid::<T>) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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debug addr => _15; // in scope 9 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
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scope 10 {
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}
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}
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scope 11 (inlined ptr::const_ptr::<impl *const T>::add) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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debug self => _12; // in scope 11 at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
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debug count => _16; // in scope 11 at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
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scope 12 {
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}
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}
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}
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}
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scope 8 (inlined core::slice::<impl [T]>::as_ptr) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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debug self => _1; // in scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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let mut _20: *const [T]; // in scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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}
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}
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}
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scope 4 (inlined <std::slice::Iter<'_, T> as IntoIterator>::into_iter) { // at $DIR/slice_iter.rs:28:14: 28:26
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debug self => _4; // in scope 4 at $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
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scope 22 (inlined <std::slice::Iter<'_, T> as IntoIterator>::into_iter) { // at $DIR/slice_iter.rs:28:14: 28:26
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debug self => _3; // in scope 22 at $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
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}
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bb0: {
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StorageLive(_3); // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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StorageLive(_4); // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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_4 = std::slice::Iter::<'_, T>::new(_1) -> [return: bb10, unwind: bb8]; // scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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// mir::Constant
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// + span: $SRC_DIR/core/src/slice/mod.rs:LL:COL
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// + user_ty: UserType(0)
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// + literal: Const { ty: fn(&[T]) -> std::slice::Iter<'_, T> {std::slice::Iter::<'_, T>::new}, val: Value(<ZST>) }
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StorageLive(_12); // scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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StorageLive(_20); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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_20 = &raw const (*_1); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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_12 = move _20 as *const T (PtrToPtr); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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StorageDead(_20); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
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StorageLive(_13); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_14); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_14 = const _; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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switchInt(move _14) -> [0: bb11, otherwise: bb10]; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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}
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bb1: {
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StorageLive(_7); // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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_8 = &mut _5; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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_7 = <std::slice::Iter<'_, T> as Iterator>::next(_8) -> [return: bb2, unwind: bb8]; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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StorageLive(_6); // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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_7 = &mut _4; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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_6 = <std::slice::Iter<'_, T> as Iterator>::next(_7) -> [return: bb2, unwind: bb8]; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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// mir::Constant
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// + span: $DIR/slice_iter.rs:28:14: 28:26
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// + literal: Const { ty: for<'a> fn(&'a mut std::slice::Iter<'_, T>) -> Option<<std::slice::Iter<'_, T> as Iterator>::Item> {<std::slice::Iter<'_, T> as Iterator>::next}, val: Value(<ZST>) }
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}
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bb2: {
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_9 = discriminant(_7); // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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switchInt(move _9) -> [0: bb5, 1: bb3, otherwise: bb4]; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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_8 = discriminant(_6); // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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switchInt(move _8) -> [0: bb5, 1: bb3, otherwise: bb4]; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:26
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}
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bb3: {
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_10 = ((_7 as Some).0: &T); // scope 1 at $DIR/slice_iter.rs:+1:9: +1:10
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StorageLive(_11); // scope 2 at $DIR/slice_iter.rs:+2:9: +2:10
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_11 = &_2; // scope 2 at $DIR/slice_iter.rs:+2:9: +2:10
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StorageLive(_12); // scope 2 at $DIR/slice_iter.rs:+2:9: +2:13
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_12 = (_10,); // scope 2 at $DIR/slice_iter.rs:+2:9: +2:13
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_6 = <impl Fn(&T) as Fn<(&T,)>>::call(move _11, move _12) -> [return: bb6, unwind: bb8]; // scope 2 at $DIR/slice_iter.rs:+2:9: +2:13
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_9 = ((_6 as Some).0: &T); // scope 1 at $DIR/slice_iter.rs:+1:9: +1:10
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StorageLive(_10); // scope 2 at $DIR/slice_iter.rs:+2:9: +2:10
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_10 = &_2; // scope 2 at $DIR/slice_iter.rs:+2:9: +2:10
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StorageLive(_11); // scope 2 at $DIR/slice_iter.rs:+2:9: +2:13
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_11 = (_9,); // scope 2 at $DIR/slice_iter.rs:+2:9: +2:13
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_5 = <impl Fn(&T) as Fn<(&T,)>>::call(move _10, move _11) -> [return: bb6, unwind: bb8]; // scope 2 at $DIR/slice_iter.rs:+2:9: +2:13
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// mir::Constant
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// + span: $DIR/slice_iter.rs:29:9: 29:10
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// + literal: Const { ty: for<'a> extern "rust-call" fn(&'a impl Fn(&T), (&T,)) -> <impl Fn(&T) as FnOnce<(&T,)>>::Output {<impl Fn(&T) as Fn<(&T,)>>::call}, val: Value(<ZST>) }
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@ -68,16 +130,15 @@ fn forward_loop(_1: &[T], _2: impl Fn(&T)) -> () {
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}
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bb5: {
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StorageDead(_7); // scope 1 at $DIR/slice_iter.rs:+3:5: +3:6
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StorageDead(_5); // scope 0 at $DIR/slice_iter.rs:+3:5: +3:6
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StorageDead(_3); // scope 0 at $DIR/slice_iter.rs:+3:5: +3:6
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StorageDead(_6); // scope 1 at $DIR/slice_iter.rs:+3:5: +3:6
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StorageDead(_4); // scope 0 at $DIR/slice_iter.rs:+3:5: +3:6
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drop(_2) -> bb7; // scope 0 at $DIR/slice_iter.rs:+4:1: +4:2
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}
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bb6: {
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StorageDead(_12); // scope 2 at $DIR/slice_iter.rs:+2:12: +2:13
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StorageDead(_11); // scope 2 at $DIR/slice_iter.rs:+2:12: +2:13
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StorageDead(_7); // scope 1 at $DIR/slice_iter.rs:+3:5: +3:6
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StorageDead(_10); // scope 2 at $DIR/slice_iter.rs:+2:12: +2:13
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StorageDead(_6); // scope 1 at $DIR/slice_iter.rs:+3:5: +3:6
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goto -> bb1; // scope 1 at $DIR/slice_iter.rs:+1:5: +3:6
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}
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@ -94,10 +155,49 @@ fn forward_loop(_1: &[T], _2: impl Fn(&T)) -> () {
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}
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bb10: {
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_3 = move _4; // scope 4 at $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
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StorageDead(_4); // scope 0 at $DIR/slice_iter.rs:+1:25: +1:26
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StorageLive(_5); // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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_5 = move _3; // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
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StorageLive(_15); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_15 = Len((*_1)); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_13 = _15 as *const T (Transmute); // scope 10 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
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StorageDead(_15); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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goto -> bb12; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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}
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bb11: {
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StorageLive(_16); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_16 = Len((*_1)); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_13 = Offset(_12, _16); // scope 12 at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
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StorageDead(_16); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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goto -> bb12; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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}
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bb12: {
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StorageDead(_14); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_17); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_18); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_18 = _12 as *mut T (PtrToPtr); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_21); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_22); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_23); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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_21 = _18 as *const T (Pointer(MutToConstPointer)); // scope 14 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
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_17 = NonNull::<T> { pointer: _21 }; // scope 14 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
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StorageDead(_23); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageDead(_22); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageDead(_21); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageDead(_18); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
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StorageLive(_19); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_19 = _13; // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_3 = std::slice::Iter::<'_, T> { ptr: move _17, end: move _19, _marker: const ZeroSized: PhantomData<&T> }; // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
// mir::Constant
|
||||
// + span: no-location
|
||||
// + literal: Const { ty: PhantomData<&T>, val: Value(<ZST>) }
|
||||
// adt
|
||||
// + user_ty: UserType(1)
|
||||
StorageDead(_19); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_17); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_13); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_12); // scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
StorageLive(_4); // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
|
||||
_4 = move _3; // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
|
||||
goto -> bb1; // scope 1 at $DIR/slice_iter.rs:+1:5: +3:6
|
||||
}
|
||||
}
|
||||
|
||||
@ -19,39 +19,104 @@ fn reverse_loop(_1: &[T], _2: impl Fn(&T)) -> () {
|
||||
scope 2 {
|
||||
debug x => _10; // in scope 2 at $DIR/slice_iter.rs:+1:9: +1:10
|
||||
}
|
||||
scope 7 (inlined <Rev<std::slice::Iter<'_, T>> as Iterator>::next) { // at $DIR/slice_iter.rs:35:14: 35:32
|
||||
debug self => _8; // in scope 7 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
let mut _13: &mut std::slice::Iter<'_, T>; // in scope 7 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
scope 25 (inlined <Rev<std::slice::Iter<'_, T>> as Iterator>::next) { // at $DIR/slice_iter.rs:35:14: 35:32
|
||||
debug self => _8; // in scope 25 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
let mut _25: &mut std::slice::Iter<'_, T>; // in scope 25 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
}
|
||||
}
|
||||
scope 3 (inlined core::slice::<impl [T]>::iter) { // at $DIR/slice_iter.rs:35:20: 35:26
|
||||
debug self => _1; // in scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
}
|
||||
scope 4 (inlined <std::slice::Iter<'_, T> as Iterator>::rev) { // at $DIR/slice_iter.rs:35:27: 35:32
|
||||
debug self => _4; // in scope 4 at $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
|
||||
scope 5 (inlined Rev::<std::slice::Iter<'_, T>>::new) { // at $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
|
||||
debug iter => _4; // in scope 5 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
scope 4 (inlined std::slice::Iter::<'_, T>::new) { // at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
debug slice => _1; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let _13: *const T; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let mut _15: bool; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let mut _16: usize; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let mut _17: usize; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let mut _18: std::ptr::NonNull<T>; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let mut _19: *mut T; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
let mut _20: *const T; // in scope 4 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
scope 5 {
|
||||
debug ptr => _13; // in scope 5 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
scope 6 {
|
||||
let _14: *const T; // in scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
scope 7 {
|
||||
debug end => _14; // in scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
scope 13 (inlined NonNull::<T>::new_unchecked) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
debug ptr => _19; // in scope 13 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
|
||||
let mut _22: *const T; // in scope 13 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
|
||||
let mut _23: *mut T; // in scope 13 at $SRC_DIR/core/src/intrinsics.rs:LL:COL
|
||||
scope 14 {
|
||||
scope 15 (inlined NonNull::<T>::new_unchecked::runtime::<T>) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
|
||||
debug ptr => _23; // in scope 15 at $SRC_DIR/core/src/intrinsics.rs:LL:COL
|
||||
scope 16 (inlined ptr::mut_ptr::<impl *mut T>::is_null) { // at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
|
||||
debug self => _23; // in scope 16 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
let mut _24: *mut u8; // in scope 16 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
scope 17 {
|
||||
scope 18 (inlined ptr::mut_ptr::<impl *mut T>::is_null::runtime_impl) { // at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
debug ptr => _24; // in scope 18 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
scope 19 (inlined ptr::mut_ptr::<impl *mut u8>::addr) { // at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
debug self => _24; // in scope 19 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
scope 20 {
|
||||
scope 21 (inlined ptr::mut_ptr::<impl *mut u8>::cast::<()>) { // at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
debug self => _24; // in scope 21 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
scope 9 (inlined invalid::<T>) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
debug addr => _16; // in scope 9 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
|
||||
scope 10 {
|
||||
}
|
||||
}
|
||||
scope 11 (inlined ptr::const_ptr::<impl *const T>::add) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
debug self => _13; // in scope 11 at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
||||
debug count => _17; // in scope 11 at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
||||
scope 12 {
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
scope 8 (inlined core::slice::<impl [T]>::as_ptr) { // at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
debug self => _1; // in scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
let mut _21: *const [T]; // in scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
}
|
||||
}
|
||||
}
|
||||
scope 6 (inlined <Rev<std::slice::Iter<'_, T>> as IntoIterator>::into_iter) { // at $DIR/slice_iter.rs:35:14: 35:32
|
||||
debug self => _3; // in scope 6 at $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
|
||||
scope 22 (inlined <std::slice::Iter<'_, T> as Iterator>::rev) { // at $DIR/slice_iter.rs:35:27: 35:32
|
||||
debug self => _4; // in scope 22 at $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
|
||||
scope 23 (inlined Rev::<std::slice::Iter<'_, T>>::new) { // at $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
|
||||
debug iter => _4; // in scope 23 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
}
|
||||
}
|
||||
scope 24 (inlined <Rev<std::slice::Iter<'_, T>> as IntoIterator>::into_iter) { // at $DIR/slice_iter.rs:35:14: 35:32
|
||||
debug self => _3; // in scope 24 at $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
|
||||
}
|
||||
|
||||
bb0: {
|
||||
StorageLive(_4); // scope 0 at $DIR/slice_iter.rs:+1:14: +1:26
|
||||
_4 = std::slice::Iter::<'_, T>::new(_1) -> [return: bb9, unwind: bb7]; // scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
// mir::Constant
|
||||
// + span: $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
// + user_ty: UserType(0)
|
||||
// + literal: Const { ty: fn(&[T]) -> std::slice::Iter<'_, T> {std::slice::Iter::<'_, T>::new}, val: Value(<ZST>) }
|
||||
StorageLive(_13); // scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
StorageLive(_21); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
_21 = &raw const (*_1); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
_13 = move _21 as *const T (PtrToPtr); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
StorageDead(_21); // scope 8 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
StorageLive(_14); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_15); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_15 = const _; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
switchInt(move _15) -> [0: bb10, otherwise: bb9]; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
}
|
||||
|
||||
bb1: {
|
||||
StorageLive(_7); // scope 1 at $DIR/slice_iter.rs:+1:14: +1:32
|
||||
_8 = &mut _5; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:32
|
||||
StorageLive(_13); // scope 7 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
_13 = &mut ((*_8).0: std::slice::Iter<'_, T>); // scope 7 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
_7 = <std::slice::Iter<'_, T> as DoubleEndedIterator>::next_back(move _13) -> [return: bb10, unwind: bb7]; // scope 7 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
StorageLive(_25); // scope 25 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
_25 = &mut ((*_8).0: std::slice::Iter<'_, T>); // scope 25 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
_7 = <std::slice::Iter<'_, T> as DoubleEndedIterator>::next_back(move _25) -> [return: bb12, unwind: bb7]; // scope 25 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
// mir::Constant
|
||||
// + span: $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
// + literal: Const { ty: for<'a> fn(&'a mut std::slice::Iter<'_, T>) -> Option<<std::slice::Iter<'_, T> as Iterator>::Item> {<std::slice::Iter<'_, T> as DoubleEndedIterator>::next_back}, val: Value(<ZST>) }
|
||||
@ -99,15 +164,56 @@ fn reverse_loop(_1: &[T], _2: impl Fn(&T)) -> () {
|
||||
}
|
||||
|
||||
bb9: {
|
||||
_3 = Rev::<std::slice::Iter<'_, T>> { iter: move _4 }; // scope 5 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
StorageLive(_16); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_16 = Len((*_1)); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_14 = _16 as *const T (Transmute); // scope 10 at $SRC_DIR/core/src/ptr/mod.rs:LL:COL
|
||||
StorageDead(_16); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
goto -> bb11; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
}
|
||||
|
||||
bb10: {
|
||||
StorageLive(_17); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_17 = Len((*_1)); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_14 = Offset(_13, _17); // scope 12 at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
||||
StorageDead(_17); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
goto -> bb11; // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
}
|
||||
|
||||
bb11: {
|
||||
StorageDead(_15); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_18); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_19); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_19 = _13 as *mut T (PtrToPtr); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_22); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_23); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_24); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_22 = _19 as *const T (Pointer(MutToConstPointer)); // scope 14 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
|
||||
_18 = NonNull::<T> { pointer: _22 }; // scope 14 at $SRC_DIR/core/src/ptr/non_null.rs:LL:COL
|
||||
StorageDead(_24); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_23); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_22); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_19); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageLive(_20); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_20 = _14; // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
_4 = std::slice::Iter::<'_, T> { ptr: move _18, end: move _20, _marker: const ZeroSized: PhantomData<&T> }; // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
// mir::Constant
|
||||
// + span: no-location
|
||||
// + literal: Const { ty: PhantomData<&T>, val: Value(<ZST>) }
|
||||
// adt
|
||||
// + user_ty: UserType(1)
|
||||
StorageDead(_20); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_18); // scope 7 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_14); // scope 6 at $SRC_DIR/core/src/slice/iter.rs:LL:COL
|
||||
StorageDead(_13); // scope 3 at $SRC_DIR/core/src/slice/mod.rs:LL:COL
|
||||
_3 = Rev::<std::slice::Iter<'_, T>> { iter: move _4 }; // scope 23 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
StorageDead(_4); // scope 0 at $DIR/slice_iter.rs:+1:31: +1:32
|
||||
StorageLive(_5); // scope 0 at $DIR/slice_iter.rs:+1:14: +1:32
|
||||
_5 = move _3; // scope 0 at $DIR/slice_iter.rs:+1:14: +1:32
|
||||
goto -> bb1; // scope 1 at $DIR/slice_iter.rs:+1:5: +3:6
|
||||
}
|
||||
|
||||
bb10: {
|
||||
StorageDead(_13); // scope 7 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
bb12: {
|
||||
StorageDead(_25); // scope 25 at $SRC_DIR/core/src/iter/adapters/rev.rs:LL:COL
|
||||
_9 = discriminant(_7); // scope 1 at $DIR/slice_iter.rs:+1:14: +1:32
|
||||
switchInt(move _9) -> [0: bb4, 1: bb2, otherwise: bb3]; // scope 1 at $DIR/slice_iter.rs:+1:14: +1:32
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user