探讨++i与i++哪个效率更高

class MyInterger{
public:
    long m_data;
public:
    MyInterger(long data):m_data(data){}
    MyInterger & operator++(){
        cout<<"Integer::operator++() called!"<<endl;
        m_data++;
        return *this;
    }
    MyInterger operator++(int){
        cout<<"Integer::operator++(int) called!"<<endl;
        MyInterger tmp = *this;
        m_data++;
        return tmp;
    }
};

int main()
{
    MyInterger a = 1;
    a++;
    ++a;
    return 0;
}