_mm256_mask_expand_epi16
Classification
AVX-512, Swizzle, CPUID Test: AVX512_VBMI2
Header File
Instruction
VPEXPANDW ymm {k}, ymm
Synopsis
_mm256_mask_expand_epi16(__m256i src, __mmask16 k, __m256i a);
Description
Load contiguous active 16-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 15
i := j*16
IF k[j]
dst[i+15:i] := a[m+15:m]
m := m + 16
ELSE
dst[i+15:i] := src[i+15:i]
FI
ENDFOR
dst[MAX:256] := 0