pub unsafe fn _mm256_alignr_epi32(
    a: __m256i,
    b: __m256i,
    const IMM8: i32
) -> __m256i
🔬 This is a nightly-only experimental API. (stdsimd #48556)
Available on x86-64 and target feature avx512f,avx512vl only.
Expand description

Concatenate a and b into a 64-byte immediate result, shift the result right by imm8 32-bit elements, and store the low 32 bytes (8 elements) in dst.

Intel’s documentation