rust/tests/ui/simd/intrinsic/generic-cast-pointer-width.rs

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2021-12-27 22:06:01 -06:00
// run-pass
#![feature(repr_simd, platform_intrinsics)]
extern "platform-intrinsic" {
fn simd_cast<T, U>(x: T) -> U;
}
#[derive(Copy, Clone)]
#[repr(simd)]
struct V<T>([T; 4]);
fn main() {
let u = V::<usize>([0, 1, 2, 3]);
let uu32: V<u32> = unsafe { simd_cast(u) };
let ui64: V<i64> = unsafe { simd_cast(u) };
for (u, (uu32, ui64)) in u.0.iter().zip(uu32.0.iter().zip(ui64.0.iter())) {
assert_eq!(*u as u32, *uu32);
assert_eq!(*u as i64, *ui64);
}
}