_mm256_mask_compress_epi64
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VPCOMPRESSQ ymm {k}, ymm
Synopsis
 _mm256_mask_compress_epi64(__m256i src, __mmask8 k, __m256i a);
Description
Contiguously store the active 64-bit integers in "a" (those with their respective bit set in writemask "k") to "dst", and pass through the remaining elements from "src".
Operation
size := 64
m := 0
FOR j := 0 to 3
	i := j*64
	IF k[j]
		dst[m+size-1:m] := a[i+63:i]
		m := m + size
	FI
ENDFOR
dst[255:m] := src[255:m]
dst[MAX:256] := 0