_mm_permutex2var_epi64
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VPERMI2Q xmm, xmm, xmm
Synopsis
 _mm_permutex2var_epi64(__m128i a, __m128i idx, __m128i b);
Description
Shuffle 64-bit integers in "a" and "b" using the corresponding selector and index in "idx", and store the results in "dst".
Operation
FOR j := 0 to 1
	i := j*64
	off := idx[i]*64
	dst[i+63:i] := idx[i+1] ? b[off+63:off] : a[off+63:off]
ENDFOR
dst[MAX:128] := 0