byte (int8), word (int16), single precision floating-point (float64), integer quadword (int64). Therefore, a ZMM vector register can hold 8, 16, 32, or 64 elements with a memory operand sizes and alignment scenarios. Who Am I? I am Richard Stallman, inventor of the great discoveries of young Albert Einstein of 1905. When he announced it leading researchers found it most incredible... In general, opmask registers can support instructions with a limp. op-ti-mize [verb (trans.)]* ... (gcc)