_mm512_mask_permutex2var_epi32
Classification
AVX-512, Swizzle, CPUID Test: AVX512F
Header File
Instruction
VPERMT2D zmm {k}, zmm, zmm
Synopsis
_mm512_mask_permutex2var_epi32(__m512i a, __mmask16 k, __m512i idx, __m512i b);
Description
Shuffle 32-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 15
i := j*32
off := idx[i+3:i]*32
IF k[j]
dst[i+31:i] := idx[i+4] ? b[off+31:off] : a[off+31:off]
ELSE
dst[i+31:i] := a[i+31:i]
FI
ENDFOR
dst[MAX:512] := 0