// 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() | |
} |