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Re: AMD optimizations
- To: Giuseppe Zompatori <mailus at tin dot it>
- Subject: Re: AMD optimizations
- From: Gareth Hughes <gareth dot hughes at acm dot org>
- Date: Thu, 21 Jun 2001 11:07:46 +1000
- CC: gcc at gcc dot gnu dot org
- References: <01062013212400.11948@localhost.localdomain>
Giuseppe Zompatori wrote:
>
> Hello,
>
> I was thinking.... were are the opstimizations for AMD processors?!?!?
>
> It's just *incredible* you're ignoring them since they overclass pentiums
> under many aspects and they are a cheaper.
> Intels on the other side have a good time, -march=i686/pentium/pemtiumpro
> mmx, sse, sse2...
> Such things remind me of the w/in/tel philosopy.
>
> What about k6 k6II k6III Durons, Athlons and 3DNow! and Enanched 3DNow?
>
> You're ignoring them since many processors generations now, and that's bad.
>
> Sorry for having a little passionate approach to the argoument but I just
> hate the way things are at the moment.
>
> All you are offering to AMD users is a broken -mcpu=k6... *shigh*
Well, it might be time for my first post to the gcc list. As the proud
owner of several AMD processors, I saw exactly what you saw and decided
to start doing something about it. Of course, I don't have a PhD. in
this field and GCC isn't the smallest codebase, but for the last couple
of months I've been learning how to read RTL, going through the x86
backend and various bits of the GCC core.
I used to work on various 3D graphics stuff for Linux (DRI, Mesa etc),
but as I'm currently unemployed I was planning on ramping up the GCC
work. I have a fairly thorough understanding of the different x86
processors, and as you say, it would be great to improve the support for
the AMD ones.
-- Gareth