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// run-pass
// revisions: opt noopt
//[noopt] compile-flags: -Copt-level=0
//[opt] compile-flags: -O
#![feature(repr_simd, platform_intrinsics)]
#![allow(incomplete_features)]
#![feature(adt_const_params)]
extern "platform-intrinsic" {
fn simd_shuffle<T, I, U>(a: T, b: T, i: I) -> U;
fn simd_shuffle16<T, U>(x: T, y: T, idx: [u32; 16]) -> U;
}
#[derive(Copy, Clone)]
#[repr(simd)]
struct Simd<T, const N: usize>([T; N]);
pub unsafe fn __shuffle_vector16<const IDX: [u32; 16], T, U>(x: T, y: T) -> U {
simd_shuffle16(x, y, IDX)
}
fn main() {
const I1: [u32; 4] = [0, 2, 4, 6];
const I2: [u32; 2] = [1, 5];
let a = Simd::<u8, 4>([0, 1, 2, 3]);
let b = Simd::<u8, 4>([4, 5, 6, 7]);
unsafe {
let x: Simd<u8, 4> = simd_shuffle(a, b, I1);
assert_eq!(x.0, [0, 2, 4, 6]);
let y: Simd<u8, 2> = simd_shuffle(a, b, I2);
assert_eq!(y.0, [1, 5]);
}
// Test that an indirection (via an unnamed constant)
// through a const generic parameter also works.
// See https://github.com/rust-lang/rust/issues/113500 for details.
let a = Simd::<u8, 16>([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]);
let b = Simd::<u8, 16>([16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31]);
unsafe {
__shuffle_vector16::<
{ [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16] },
Simd<u8, 16>,
Simd<u8, 16>,
>(a, b);
}
}
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