List of Compiler Options and Their Defaults
Options that Define the Compiler Object Code Produced
| Option Type | Default Value | #pragma options | C | C++ |
| -qoption | nofdpr | - | x | x |
Syntax
-qfdpr | -qnofdpr
Purpose
Collects information about your program for use with the AIX
fdpr (Feedback Directed Program Restructuring)
performance-tuning utility.
Notes
You should compile your program with -qfdpr
before optimizing it with the fdpr
performance-tuning utility. Optmization data is stored in the
object file.
For more information on using the fdpr performance-tuning utilty, refer to the AIX Version 4 Commands Reference or enter the command:
man fdpr
Example
To compile myprogram.c so it include data required by the fdpr
utility, enter:
xlC myprogram.c -fdpr
List of Compiler Options and Their
Defaults
Options that Define the Compiler Object
Code Produced
