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Re: GCC 4.0.0 Performance Regressions?
On Tue, May 10, 2005 at 02:04:37AM +0200, Giovanni Bajo wrote:
> You should try and isolate a single BYTEmark test which shows the biggest
> regression. It's better if you manage to pack the whole test as a single
> preprocessed source file. Theoretically, this file should be compilable and
> linkable, and the resulting binary should run for a while doing computations.
>
> With this kind of help, we can analyze the regression and see why it's slower
> with 4.0.0.
>
> Giovanni Bajo
It was rather time-consuming but I managed to do it. I picked the numsort
benchmark which had a serious regression:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21485
Jason B.
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