pub unsafe fn _mm256_mask_shldv_epi16(
    a: __m256i,
    k: __mmask16,
    b: __m256i,
    c: __m256i
) -> __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

Concatenate packed 16-bit integers in a and b producing an intermediate 32-bit result. Shift the result left by the amount specified in the corresponding element of c, and store the upper 16-bits in dst using writemask k (elements are copied from a when the corresponding mask bit is not set).

Intel’s documentation