46 lines
1.1 KiB
Rust
46 lines
1.1 KiB
Rust
// This used to cause assert_10_13 to unexpectingly fail, due to simd_shuffle_indices being passed
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// the wrong Instance, causing issues with inlining. See #67557.
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//
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//@ run-pass
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//@ compile-flags: -Zmir-opt-level=4
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#![feature(intrinsics, repr_simd)]
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extern "rust-intrinsic" {
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fn simd_shuffle<T, I, U>(x: T, y: T, idx: I) -> U;
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}
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#[repr(simd)]
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#[derive(Debug, PartialEq)]
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struct Simd2([u8; 2]);
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#[repr(simd)]
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struct SimdShuffleIdx<const LEN: usize>([u32; LEN]);
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fn main() {
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unsafe {
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const IDX: SimdShuffleIdx<2> = SimdShuffleIdx([0, 1]);
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let p_res: Simd2 = simd_shuffle(Simd2([10, 11]), Simd2([12, 13]), IDX);
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let a_res: Simd2 = inline_me();
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assert_10_11(p_res);
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assert_10_13(a_res);
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}
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}
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#[inline(never)]
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fn assert_10_11(x: Simd2) {
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assert_eq!(x, Simd2([10, 11]));
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}
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#[inline(never)]
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fn assert_10_13(x: Simd2) {
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assert_eq!(x, Simd2([10, 13]));
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}
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#[inline(always)]
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unsafe fn inline_me() -> Simd2 {
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const IDX: SimdShuffleIdx<2> = SimdShuffleIdx([0, 3]);
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simd_shuffle(Simd2([10, 11]), Simd2([12, 13]), IDX)
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}
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