[Bug c/32592] New: Suggest more optimize options and tweaking

[Bug c/32592] New: Suggest more optimize options and tweaking

[rob1weld at aol dot com]

The File: gcc.info,  Node: Optimize Options does list some fine features.

On this page: http://www.pathscale.com/docs.html is this whitepaper:

Maximizing Application Performance Through Inter-procedural Optimization by Dr.
Fred Chow 
http://www.pathscale.com/pdf/IPA-paper.pdf

It shows on pages 9 and 10 a list of IPA and inlining options that exceed our
"-fipa-pta" and friends. They also use different default values in some cases
where 'similar' features are offered.


The other whitepaper, "Automated Application Tuning", is great too:
http://www.pathscale.com/pdf/PathOpt2-paper.pdf

These ideas would be fine enhancements to GCC 4.3.0.


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           Summary: Suggest more optimize options and tweaking
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rob1weld at aol dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32592

[Bug c/32592] Suggest more optimize options and tweaking

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-07-02 19:08 -------
No GCC is not in the business of auto tunning options.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32592

[Bug c/32592] Suggest more optimize options and tweaking

[rob1weld at aol dot com]

------- Comment #2 from rob1weld at aol dot com  2007-07-17 03:01 -------
>It shows on pages 9 and 10 a list of IPA and inlining options that exceed our
>"-fipa-pta" and friends. They also use different default values in some cases
>where 'similar' features are offered.

If no "auto-tuning" (which do have patches coming from others), do you like the
part about the "inlining" and "inter-procedural analysis" ?

They have more options that allow finer tweaking. We could implement finer
tweaking. (See pages 9 + 10).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32592