15 lines
383 B
Rust
15 lines
383 B
Rust
// ignore-debug: the debug assertions get in the way
|
|
// compile-flags: -O
|
|
// min-llvm-version: 11.0
|
|
#![crate_type = "lib"]
|
|
|
|
// Ensure that trivial casts of vec elements are O(1)
|
|
|
|
// CHECK-LABEL: @vec_iterator_cast
|
|
#[no_mangle]
|
|
pub fn vec_iterator_cast(vec: Vec<isize>) -> Vec<usize> {
|
|
// CHECK-NOT: loop
|
|
// CHECK-NOT: call
|
|
vec.into_iter().map(|e| e as usize).collect()
|
|
}
|