Additional Global Optimizations

To enable additional global optimizations, use /optimize:3 or a higher optimization level. Using /optimize:3 or higher also enables local optimizations (/optimize:1) and global optimizations (/optimize:2).

Additional global optimizations improve speed at the cost of longer compile times and possibly extra code size. These optimizations include:

• Loop unrolling, including instruction scheduling (see Loop Unrolling)
• Code replication to eliminate branches (see Code Replication to Eliminate Branches)
• Padding the size of certain power-of-two arrays to allow more efficient cache use (see Use Arrays Efficiently)