rust/tests/codegen/vec-iter.rs

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// 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()
}