| //@ run-pass |
| #![allow(dead_code)] |
| |
| //@ pretty-expanded FIXME #23616 |
| |
| #![feature(repr_simd, intrinsics)] |
| |
| #[repr(simd)] |
| #[derive(Copy, Clone)] |
| struct S([i32; 4]); |
| |
| #[repr(simd)] |
| #[derive(Copy, Clone)] |
| struct T<const N: usize>([i32; N]); |
| |
| extern "rust-intrinsic" { |
| fn simd_insert<T, E>(x: T, idx: u32, y: E) -> T; |
| fn simd_extract<T, E>(x: T, idx: u32) -> E; |
| } |
| |
| pub fn main() { |
| let mut s = S([0; 4]); |
| |
| unsafe { |
| s = simd_insert(s, 3, 3); |
| assert_eq!(3, simd_extract(s, 3)); |
| } |
| |
| let mut t = T::<4>([0; 4]); |
| unsafe { |
| t = simd_insert(t, 3, 3); |
| assert_eq!(3, simd_extract(t, 3)); |
| } |
| } |