*Conan The Librarian
The /OPTIMIZE qualifier controls whether the compiler optimizes the program to generate more efficient code for optimum run-time performance. The format of the /OPTIMIZE qualifier is as follows: /[NO]OPTIMIZE[=LEVEL=n] The following list describes the level options: Level 0 Has the same effect as /NOOPTIMIZE. All optimizations are turned off. Level 1 Has some optimizations (such as instruction scheduling). Level 2 Adds more optimizations (such as loop unrolling and split lifetime analysis) to those in level 1. Level 3 Adds more optimizations. Level 4 Is the default level. /OPTIMIZE=LEVEL=4 is the equivalent of /OPTIMIZE The default is /OPTIMIZE.