mirror of https://github.com/rust-lang/rust.git
47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
// ignore-debug: the debug assertions get in the way
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// compile-flags: -O
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#![crate_type = "lib"]
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#![feature(exact_size_is_empty)]
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use std::vec;
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// CHECK-LABEL: @vec_iter_len_nonnull
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#[no_mangle]
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pub fn vec_iter_len_nonnull(it: &vec::IntoIter<u8>) -> usize {
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// CHECK: load ptr
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// CHECK-SAME: !nonnull
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// CHECK-SAME: !noundef
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// CHECK: load ptr
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// CHECK-SAME: !nonnull
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// CHECK-SAME: !noundef
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// CHECK: sub nuw
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// CHECK: ret
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it.len()
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}
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// CHECK-LABEL: @vec_iter_is_empty_nonnull
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#[no_mangle]
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pub fn vec_iter_is_empty_nonnull(it: &vec::IntoIter<u8>) -> bool {
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// CHECK: load ptr
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// CHECK-SAME: !nonnull
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// CHECK-SAME: !noundef
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// CHECK: load ptr
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// CHECK-SAME: !nonnull
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// CHECK-SAME: !noundef
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// CHECK: ret
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it.is_empty()
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}
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// CHECK-LABEL: @vec_iter_next
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#[no_mangle]
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pub fn vec_iter_next(it: &mut vec::IntoIter<u8>) -> Option<u8> {
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// CHECK: load ptr
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// CHECK-SAME: !nonnull
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// CHECK-SAME: !noundef
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// CHECK: load ptr
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// CHECK-SAME: !nonnull
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// CHECK-SAME: !noundef
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// CHECK: ret
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it.next()
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}
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