Function core::arch::x86::_mm256_mask_multishift_epi64_epi8

pub unsafe fn _mm256_mask_multishift_epi64_epi8(
    src: __m256i, 
    k: __mmask32, 
    a: __m256i, 
    b: __m256i
) -> __m256i

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on x86 and target feature avx512vbmi,avx512vl only.

For each 64-bit element in b, select 8 unaligned bytes using a byte-granular shift control within the corresponding 64-bit element of a, and store the 8 assembled bytes to the corresponding 64-bit element of dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

Intel’s documentation