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Re: GCC on SPEC.org
- From: Vladimir Makarov <vmakarov at redhat dot com>
- To: Dara Hazeghi <dhazeghi at yahoo dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Mon, 19 Jan 2004 10:34:30 -0500
- Subject: Re: GCC on SPEC.org
- References: <20040118094009.48932.qmail@web41110.mail.yahoo.com>
Dara Hazeghi wrote:
>
> Hello,
>
> in light of the recent discussion of gcc performance
> (with particular emphasis on comparison with Intel's
> compiler), the 3rd and 4th entries at
> <http://www.spec.org/cpu2000/results/res2003q4/> may
> be interesting. Perhaps we aren't so far off from
> parity, at least in some areas? Cheers,
>
I'd take the comparison with Intel's compiler with a grain of salt. The
testing was made for AMD64 not for Intel P4. Intel is focused to
improve code mainly for their processors.
There is one area where we could try to achieve a better results. It is
a peak performance which permits to use a specific set of options for
each SPEC test and characterizes variety and quality of compiler
optimizations. Gcc has much more optimization options than Intel's
one. So there is a possibility to improve SPEC peak performance.
Actually it is another argument to add tree-ssa for mainline. It could
aid to improve peak performance too.
Vlad