HP C Programmer's Guide (92434-90009)

62 Chapter4
Optimizing HP C Programs
Enabling Basic Optimization
Enabling Basic Optimization
To enable basic optimizations, use the -O option (equivalent to +O2), as follows:
cc -O sourcefile .c
Basic optimizations do not change the behavior of ANSI C standard-conforming code. They
improve run-time execution time but only increase compile time and link time by a
moderate amount.