_mm256_permutex2var_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPERMI2W ymm, ymm, ymm
Synopsis
_mm256_permutex2var_epi16(__m256i a, __m256i idx, __m256i b);
Description
Shuffle 16-bit integers in "a" and "b" across lanes using the corresponding selector and index in "idx", and store the results in "dst".
Operation
FOR j := 0 to 15
i := j*16
off := 16*idx[i+3:i]
dst[i+15:i] := idx[i+4] ? b[off+15:off] : a[off+15:off]
ENDFOR
dst[MAX:256] := 0