_mm512_maskz_permutexvar_epi64
Classification
AVX-512, Swizzle, CPUID Test: AVX512F
Header File
Instruction
VPERMQ zmm {z}, zmm, zmm
Synopsis
_mm512_maskz_permutexvar_epi64(__mmask8 k, __m512i idx, __m512i a);
Description
Shuffle 64-bit integers in "a" across lanes using the corresponding 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 7
i := j*64
id := idx[i+2:i]*64
IF k[j]
dst[i+63:i] := a[id+63:id]
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:512] := 0