_mm_mask_expand_epi32
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
Instruction
VPEXPANDD xmm {k}, xmm
Synopsis
_mm_mask_expand_epi32(__m128i src, __mmask8 k, __m128i a);
Description
Load contiguous active 32-bit integers from "a" (those with their respective bit set in mask "k"), and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
m := 0
FOR j := 0 to 3
i := j*32
IF k[j]
dst[i+31:i] := a[m+31:m]
m := m + 32
ELSE
dst[i+31:i] := src[i+31:i]
FI
ENDFOR
dst[MAX:128] := 0