2 //ignore-endian-big behavior of simd_select_bitmask is endian-specific
3 #![feature(repr_simd, platform_intrinsics)]
5 extern "platform-intrinsic" {
6 fn simd_bitmask<T, U>(v: T) -> U;
7 fn simd_select_bitmask<T, U>(m: T, a: U, b: U) -> U;
10 #[derive(Copy, Clone)]
12 struct Simd<T, const N: usize>([T; N]);
16 let v = Simd::<i8, 4>([-1, 0, -1, 0]);
17 let i: u8 = simd_bitmask(v);
18 let a: [u8; 1] = simd_bitmask(v);
20 assert_eq!(i, 0b0101);
21 assert_eq!(a, [0b0101]);
23 let v = Simd::<i8, 16>([0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, -1, 0]);
24 let i: u16 = simd_bitmask(v);
25 let a: [u8; 2] = simd_bitmask(v);
27 assert_eq!(i, 0b0101000000001100);
28 assert_eq!(a, [0b1100, 0b01010000]);
32 let a = Simd::<i32, 8>([0, 1, 2, 3, 4, 5, 6, 7]);
33 let b = Simd::<i32, 8>([8, 9, 10, 11, 12, 13, 14, 15]);
34 let e = [0, 9, 2, 11, 12, 13, 14, 15];
36 let r = simd_select_bitmask(0b0101u8, a, b);
39 let r = simd_select_bitmask([0b0101u8], a, b);
42 let a = Simd::<i32, 16>([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]);
43 let b = Simd::<i32, 16>([16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31]);
44 let e = [16, 17, 2, 3, 20, 21, 22, 23, 24, 25, 26, 27, 12, 29, 14, 31];
46 let r = simd_select_bitmask(0b0101000000001100u16, a, b);
49 let r = simd_select_bitmask([0b1100u8, 0b01010000u8], a, b);