mirror of https://github.com/rust-lang/rust
84 lines
2.6 KiB
Rust
84 lines
2.6 KiB
Rust
//@ build-fail
|
|
#![allow(non_camel_case_types)]
|
|
#![feature(repr_simd, core_intrinsics)]
|
|
|
|
// Test for #73542 to verify out-of-bounds shuffle vectors do not compile.
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone)]
|
|
struct u8x2([u8; 2]);
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone)]
|
|
struct u8x4([u8; 4]);
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone)]
|
|
struct u8x8([u8; 8]);
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone)]
|
|
struct u8x16([u8; 16]);
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone)]
|
|
struct u8x32([u8; 32]);
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone)]
|
|
struct u8x64([u8; 64]);
|
|
|
|
use std::intrinsics::simd::*;
|
|
|
|
// Test vectors by lane size. Since LLVM does not distinguish between a shuffle
|
|
// over two f32s and a shuffle over two u64s, or any other such combination,
|
|
// it is not necessary to test every possible vector, only lane counts.
|
|
macro_rules! test_shuffle_lanes {
|
|
($n:literal, $x:ident, $y:ident) => {
|
|
unsafe {
|
|
let shuffle: $x = {
|
|
const ARR: [u32; $n] = {
|
|
let mut arr = [0; $n];
|
|
arr[0] = $n * 2;
|
|
arr
|
|
};
|
|
let mut n: u8 = $n;
|
|
let vals = [0; $n].map(|_| { n = n - 1; n });
|
|
let vec1 = $x(vals);
|
|
let vec2 = $x(vals);
|
|
$y(vec1, vec2, ARR)
|
|
};
|
|
}
|
|
}
|
|
}
|
|
//~^^^^^ ERROR: invalid monomorphization of `simd_shuffle` intrinsic
|
|
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic
|
|
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic
|
|
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic
|
|
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic
|
|
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic
|
|
// Because the test is mostly embedded in a macro, all the errors have the same origin point.
|
|
// And unfortunately, standard comments, as in the UI test harness, disappear in macros!
|
|
|
|
fn main() {
|
|
test_shuffle_lanes!(2, u8x2, simd_shuffle);
|
|
test_shuffle_lanes!(4, u8x4, simd_shuffle);
|
|
test_shuffle_lanes!(8, u8x8, simd_shuffle);
|
|
test_shuffle_lanes!(16, u8x16, simd_shuffle);
|
|
test_shuffle_lanes!(32, u8x32, simd_shuffle);
|
|
test_shuffle_lanes!(64, u8x64, simd_shuffle);
|
|
|
|
let v = u8x2([0, 0]);
|
|
const I: [u32; 2] = [4, 4];
|
|
unsafe {
|
|
let _: u8x2 = simd_shuffle(v, v, I);
|
|
//~^ ERROR invalid monomorphization of `simd_shuffle` intrinsic
|
|
}
|
|
|
|
// also check insert/extract
|
|
unsafe {
|
|
simd_insert(v, 2, 0); //~ ERROR invalid monomorphization of `simd_insert` intrinsic
|
|
let _val: u8 = simd_extract(v, 2); //~ ERROR invalid monomorphization of `simd_extract` intrinsic
|
|
}
|
|
}
|