There are many optimizations that are guaranteed to make code run faster, but even then, that does not mean you should use them. There can be competition betwe

There are many optimizations that are guaranteed to make code run faster, but even then, that does not mean you should use them. There can be competition between optimizations. At a given moment, the preconditions for both optimization O1 and optimization O2 may hold, but if you then apply O1, the precondition for O2 may no longer hold and vice versa. In such cases, the best solution is to pick the better of O1 and O2.