_mm_mask_shuffle_epi8
Classification
AVX-512, Swizzle, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPSHUFB xmm {k}, xmm, xmm
Synopsis
 _mm_mask_shuffle_epi8(__m128i src, __mmask16 k, __m128i a, __m128i b);
Description
Shuffle packed 8-bit integers in "a" according to shuffle control mask in the corresponding 8-bit element of "b", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 15
	i := j*8
	IF k[j]
		IF b[i+7] == 1
			dst[i+7:i] := 0
		ELSE
			index[3:0] := b[i+3:i]
			dst[i+7:i] := a[index*8+7:index*8]
		FI
	ELSE
		dst[i+7:i] := src[i+7:i]
	FI
ENDFOR
dst[MAX:128] := 0