This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [RFT] fwprop merge

David Edelsohn wrote: 
	I have run SPEC CPU2000 on a PowerMac G5 with and without the
fwprop patch.

Thank you for doing this.

The percent difference in the SPEC score is:

These are individual scores, what about the total?

	Other than gap, the effect of the patch is in the noise.  The
decrease in performance can be addressed after the patch is merged.

Still, it would be nice to understand it before merging the patch. A 9%
regression, while only for one program, is still significant. Is it consistent across multiple runs? Can you do something to narrow down the problem to one object file or one function?


Bernd

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]