53 lines
1.4 KiB
Rust
53 lines
1.4 KiB
Rust
//@ run-pass
|
|
|
|
// Test that simd gather instructions on slice of usize don't cause crash
|
|
// See issue #89183 - https://github.com/rust-lang/rust/issues/89193
|
|
|
|
#![feature(repr_simd, platform_intrinsics)]
|
|
#![allow(non_camel_case_types)]
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone, PartialEq, Debug)]
|
|
struct x4<T>(pub T, pub T, pub T, pub T);
|
|
|
|
extern "platform-intrinsic" {
|
|
fn simd_gather<T, U, V>(x: T, y: U, z: V) -> T;
|
|
}
|
|
|
|
fn main() {
|
|
let x: [usize; 4] = [10, 11, 12, 13];
|
|
let default = x4(0_usize, 1, 2, 3);
|
|
let all_set = u8::MAX as i8; // aka -1
|
|
let mask = x4(all_set, all_set, all_set, all_set);
|
|
let expected = x4(10_usize, 11, 12, 13);
|
|
|
|
unsafe {
|
|
let pointer = x.as_ptr();
|
|
let pointers = x4(
|
|
pointer.offset(0),
|
|
pointer.offset(1),
|
|
pointer.offset(2),
|
|
pointer.offset(3)
|
|
);
|
|
let result = simd_gather(default, pointers, mask);
|
|
assert_eq!(result, expected);
|
|
}
|
|
|
|
// and again for isize
|
|
let x: [isize; 4] = [10, 11, 12, 13];
|
|
let default = x4(0_isize, 1, 2, 3);
|
|
let expected = x4(10_isize, 11, 12, 13);
|
|
|
|
unsafe {
|
|
let pointer = x.as_ptr();
|
|
let pointers = x4(
|
|
pointer.offset(0),
|
|
pointer.offset(1),
|
|
pointer.offset(2),
|
|
pointer.offset(3)
|
|
);
|
|
let result = simd_gather(default, pointers, mask);
|
|
assert_eq!(result, expected);
|
|
}
|
|
}
|