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Rollup merge of #126184 - RalfJung:interpret-simd-nonpow2, r=oli-obk

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interpret: do not ICE on padded non-pow2 SIMD vectors

Fixes https://github.com/rust-lang/miri/issues/3458

r? ``@oli-obk``
This commit is contained in:
Matthias Krüger 2024-06-10 21:12:25 +02:00 • committed by GitHub
commit 07bb7ca9fa
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3 changed files with 30 additions and 6 deletions
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21
src/tools/miri/tests/pass/intrinsics/portable-simd.rs
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@ -658,11 +658,32 @@ fn simd_masked_loadstore() {
assert_eq!(buf, [2, 3, 4]);
}
fn simd_ops_non_pow2() {
// Just a little smoke test for operations on non-power-of-two vectors.
#[repr(simd, packed)]
#[derive(Copy, Clone)]
pub struct SimdPacked<T, const N: usize>([T; N]);
#[repr(simd)]
#[derive(Copy, Clone)]
pub struct SimdPadded<T, const N: usize>([T; N]);
let x = SimdPacked([1u32; 3]);
let y = SimdPacked([2u32; 3]);
let z = unsafe { intrinsics::simd_add(x, y) };
assert_eq!({ z.0 }, [3u32; 3]);
let x = SimdPadded([1u32; 3]);
let y = SimdPadded([2u32; 3]);
let z = unsafe { intrinsics::simd_add(x, y) };
assert_eq!(z.0, [3u32; 3]);
}
fn main() {
simd_mask();
simd_ops_f32();
simd_ops_f64();
simd_ops_i32();
simd_ops_non_pow2();
simd_cast();
simd_swizzle();
simd_gather_scatter();