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 x86-64 and target feature avx512vbmi2,avx512vl 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