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//@ run-pass
#![allow(non_camel_case_types)]
//@ ignore-emscripten
//@ ignore-endian-big behavior of simd_bitmask is endian-specific
// Test that the simd_bitmask intrinsic produces correct results.
#![feature(repr_simd, intrinsics)]
#[allow(non_camel_case_types)]
#[repr(simd)]
#[derive(Copy, Clone, PartialEq, Debug)]
struct u32x4(pub [u32; 4]);
#[repr(simd)]
#[derive(Copy, Clone, PartialEq, Debug)]
struct u8x4(pub [u8; 4]);
#[repr(simd)]
#[derive(Copy, Clone, PartialEq, Debug)]
struct Tx4<T>(pub [T; 4]);
extern "rust-intrinsic" {
fn simd_bitmask<T, U>(x: T) -> U;
}
fn main() {
let z = u32x4([0, 0, 0, 0]);
let ez = 0_u8;
let o = u32x4([!0, !0, !0, !0]);
let eo = 0b_1111_u8;
let m0 = u32x4([!0, 0, !0, 0]);
let e0 = 0b_0000_0101_u8;
// Check that the MSB is extracted:
let m = u8x4([0b_1000_0000, 0b_0100_0001, 0b_1100_0001, 0b_1111_1111]);
let e = 0b_1101;
// Check usize / isize
let msize: Tx4<usize> = Tx4([usize::MAX, 0, usize::MAX, usize::MAX]);
unsafe {
let r: u8 = simd_bitmask(z);
assert_eq!(r, ez);
let r: u8 = simd_bitmask(o);
assert_eq!(r, eo);
let r: u8 = simd_bitmask(m0);
assert_eq!(r, e0);
let r: u8 = simd_bitmask(m);
assert_eq!(r, e);
let r: u8 = simd_bitmask(msize);
assert_eq!(r, e);
}
}
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