| // 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() | |
| } |