MAXPCF

MAXPCF(100000)

MAXPCF(0)

MAXPCF can be specified to automatically reduce the amount of optimization for large and complex programs that may require excessive compilation time or excessive storage requirements.

The MAXPCF option is intended to allow large programs to compile successfully but at the cost of reduced optimization. However, if possible, it is recommended to restructure your large applications into smaller separate programs.

A number of new "global" optimizations have been added to the V5 compiler release. These optimizations are termed "global" as they attempt to find synergies and improve performance across an entire program instead of just "locally" within a statement or a linear set of statements in a section. Because these global optimizations must analyze the statements and data items of the entire program, they sometimes require significant amounts of storage and time.

For this reason, and to generally benefit software maintenance activities, it is strongly recommended to break large programs into smaller separate programs linked together by static calls (to minimize overhead versus using dynamic calls). These smaller programs will have a much better chance of not requiring a downgrade of optimization by the MAXPCF option. This will also likely result in faster compile times requiring less storage, and the final compiled and linked application will have been subject to the full suite of optimizations available in the V6 compiler.

Specifying MAXPCF(0) may increase compilation time.