mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-31 13:04:42 +00:00
47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
// ignore-debug: the debug assertions get in the way
|
|
// compile-flags: -O
|
|
#![crate_type = "lib"]
|
|
#![feature(exact_size_is_empty)]
|
|
|
|
use std::vec;
|
|
|
|
// CHECK-LABEL: @vec_iter_len_nonnull
|
|
#[no_mangle]
|
|
pub fn vec_iter_len_nonnull(it: &vec::IntoIter<u8>) -> usize {
|
|
// CHECK: load ptr
|
|
// CHECK-SAME: !nonnull
|
|
// CHECK-SAME: !noundef
|
|
// CHECK: load ptr
|
|
// CHECK-SAME: !nonnull
|
|
// CHECK-SAME: !noundef
|
|
// CHECK: sub nuw
|
|
// CHECK: ret
|
|
it.len()
|
|
}
|
|
|
|
// CHECK-LABEL: @vec_iter_is_empty_nonnull
|
|
#[no_mangle]
|
|
pub fn vec_iter_is_empty_nonnull(it: &vec::IntoIter<u8>) -> bool {
|
|
// CHECK: load ptr
|
|
// CHECK-SAME: !nonnull
|
|
// CHECK-SAME: !noundef
|
|
// CHECK: load ptr
|
|
// CHECK-SAME: !nonnull
|
|
// CHECK-SAME: !noundef
|
|
// CHECK: ret
|
|
it.is_empty()
|
|
}
|
|
|
|
// CHECK-LABEL: @vec_iter_next
|
|
#[no_mangle]
|
|
pub fn vec_iter_next(it: &mut vec::IntoIter<u8>) -> Option<u8> {
|
|
// CHECK: load ptr
|
|
// CHECK-SAME: !nonnull
|
|
// CHECK-SAME: !noundef
|
|
// CHECK: load ptr
|
|
// CHECK-SAME: !nonnull
|
|
// CHECK-SAME: !noundef
|
|
// CHECK: ret
|
|
it.next()
|
|
}
|