4.5.3 How Can I Make My Code Smaller?

General advice for creating smaller code:

• Do not mix data types.
• Define index variables in the native word width.
• Don't use floating-point variables when integers will suffice. When using floating-point variables, consider using the smaller math libraries.
• Compiler option -mpa can be combined with any optimization level to reduce code size. See the following chapter in this user’s guide:

  19 Optimizations

  Note: Optimized code may be more difficult to debug.
• When initializing an SFR, use the full name of the SFR instead of bit names. You can initialize several fields at once with this technique.
• Instead of copying code literally into several places in your program, reorganize the shared code into functions.
• Use the small code, small scalar, and large data memory models. Refer to the following section of this user’s guide:

  11.14 Memory Models