return new OPT_MemoryOperand(base, null, (byte)0, 0, size, loc, guard);
return new OPT_MemoryOperand(base, null, (byte)0, Offset.zero(), size, loc, guard);
  public static OPT_MemoryOperand I(OPT_RegisterOperand base,                                    byte size,                                    OPT_LocationOperand loc,                                    OPT_Operand guard) {    return new OPT_MemoryOperand(base, null, (byte)0, 0, size, loc, guard);  }