ZYDIS_REGISTER_K0
instruction->avx.mask.reg = ZYDIS_REGISTER_K0 + instruction->raw.evex.aaa;
instruction->avx.mask.reg = ZYDIS_REGISTER_K0 + instruction->raw.mvex.kkk;
if (context->instruction->avx.mask.reg != ZYDIS_REGISTER_K0)