_mm512_maskz_permutex2var_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPERMI2W zmm {z}, zmm, zmm
Synopsis
 _mm512_maskz_permutex2var_epi16(__mmask32 k, __m512i a, __m512i idx, __m512i b);
Description
Shuffle 16-bit integers in "a" and "b" across lanes using the corresponding selector and index in "idx", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 31
	i := j*16
	IF k[j]
		off := 16*idx[i+4:i]
		dst[i+15:i] := idx[i+5] ? b[off+15:off] : a[off+15:off]
	ELSE
		dst[i+15:i] := 0
	FI
ENDFOR
dst[MAX:512] := 0