Re: Questions about selective scheduler and PowerPC

[Pat Haugen <pthaugen at linux dot vnet dot ibm dot com>]

On 10/20/2010 7:48 PM, Jie Zhang wrote:
> > Running CPU2006, with the hack removed I see about a 1% improvement in
> > specint (10% in 456.hmmer, a couple others in the 3% range, -3%
> > 401.bzip2) and a 1% degradation in specfp (mainly due to a 13%
> > degradation in 435.gromacs). But 454.calculix also fails for me (output
> > miscompare), so assume we're generating incorrect code for some reason
> > with the hack removed.
> Thanks for benchmarking! Since there is a bug in max_issue, issue_rate 
> is not really honored. Could you try this patch
>
> http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01719.html
>
> with and without the hack?

With your patch applied I see pretty similar results as before, except 
for a couple additional specint benchmarks that degraded a couple 
percent with the hack removed.

-Pat