There are several reasons to program in C++, and one of the most important ones is the incredible performance that one can obtain. With the next release of Microsoft® Visual C++®, code-named Microsoft Visual C++ “Whidbey,” you not only get great performance from all of the traditional methods of optimization, but we’ve added a new technique, which allows users to get even more out of their application. In this article we show the user how to use profile-guided optimization (PGO) to achieve this incredible performance. More