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Re: SPEC2000 testing page
- To: aj at suse dot de, gcc at gcc dot gnu dot org
- Subject: Re: SPEC2000 testing page
- From: Jan Hubicka <jh at suse dot cz>
- Date: Wed, 25 Jul 2001 22:22:20 +0200
> > I'm studying these .html pages. What's remarkable is that you use
> > -mpreferred-stack-boundary=2 for peak performance. According to our
> > documentation that would set stack alignment to 4 bytes. If there are a
> > lot of local double precision variables / arrays in the code, this is a
> > loss.
>
> What do you propose instead? Just removing it? Honza, do you
> remember why I've added this?
I think we wanted to add it for specint2000 only. For integer programs
it should be win, for FP programs lose (assuming that we manage
to get stack properly aligned).
I would drop it for specfp.
Honza