_mm256_maskz_permutexvar_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPERMW ymm {z}, ymm, ymm
Synopsis
_mm256_maskz_permutexvar_epi16(__mmask16 k, __m256i idx, __m256i a);
Description
Shuffle 16-bit integers in "a" across lanes using the corresponding index in "idx", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 15
i := j*16
id := idx[i+3:i]*16
IF k[j]
dst[i+15:i] := a[id+15:id]
ELSE
dst[i+15:i] := 0
FI
ENDFOR
dst[MAX:256] := 0