How does the compiler know where control should return after a function call?

Consider the following functions:

int main()
{
    //statement(s);
    func1();
    //statement(s);
}

void func1()
{
    //statement(s);
    func2();
    //statement(s);
}

void func2()
{
    //statement(s);
}

How does the compiler know where to return after having func2completed all its operations? I know that control passes functions func1(and exactly which operator), but how does the compiler know about this? What tells the compiler where to go back?