1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//@ 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::*;
#[repr(simd)]
struct SimdShuffleIdx<const LEN: usize>([u32; LEN]);
// 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: $x = {
const IDX: SimdShuffleIdx<$n> = SimdShuffleIdx({
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, IDX)
};
}
}
}
//~^^^^^ ERROR: invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
//~| ERROR: invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
// 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: SimdShuffleIdx<2> = SimdShuffleIdx([4, 4]);
unsafe {
let _: u8x2 = simd_shuffle(v, v, I);
//~^ ERROR invalid monomorphization of `simd_shuffle` intrinsic: SIMD index #0 is out of bounds
}
// also check insert/extract
unsafe {
simd_insert(v, 2, 0u8); //~ ERROR invalid monomorphization of `simd_insert` intrinsic: SIMD index #1 is out of bounds
let _val: u8 = simd_extract(v, 2); //~ ERROR invalid monomorphization of `simd_extract` intrinsic: SIMD index #1 is out of bounds
}
}
|
