_mm_permutexvar_epi8
Classification
AVX-512, Swizzle, CPUID Test: AVX512_VBMI
Header File
Instruction
VPERMB xmm, xmm, xmm
Synopsis
_mm_permutexvar_epi8(__m128i idx, __m128i a);
Description
Shuffle 8-bit integers in "a" using the corresponding index in "idx", and store the results in "dst".
Operation
FOR j := 0 to 15
i := j*8
id := idx[i+3:i]*8
dst[i+7:i] := a[id+7:id]
ENDFOR
dst[MAX:128] := 0