pub unsafe fn _mm256_mask_compressstoreu_epi8(
    base_addr: *mut u8,
    k: __mmask32,
    a: __m256i
)
🔬This is a nightly-only experimental API. (stdsimd #48556)
Available on (x86 or x86-64) and target feature avx512vbmi2,avx512vl and x86 only.
Expand description

Contiguously store the active 8-bit integers in a (those with their respective bit set in writemask k) to unaligned memory at base_addr.

Intel’s documentation