_mm512_mask_permutex2var_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPERMT2W zmm {k}, zmm, zmm
Synopsis
_mm512_mask_permutex2var_epi16(__m512i a, __mmask32 k, __m512i idx, __m512i 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" using writemask "k" (elements are copied from "a" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 31
i := j*16
IF k[j]
off := 16*idx[i+4:i]
dst[i+15:i] := idx[i+5] ? b[off+15:off] : a[off+15:off]
ELSE
dst[i+15:i] := a[i+15:i]
FI
ENDFOR
dst[MAX:512] := 0