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Re: hi
- To: Bill Schelter <wfs at fireant dot ma dot utexas dot edu>
- Subject: Re: hi
- From: Erhan BiLGiLi <gcc at altay dot adm dot deu dot edu dot tr>
- Date: Mon, 4 Oct 1999 10:48:12 +0300 (EEST)
- cc: gcc at gcc dot gnu dot org
>
> I am extending the i386.md and i386.h to handle mmx registers
> so that we can use the new mmx operations and 3dnow operations
> in inline functions or macros. I have also extended the binutils
> with the latest amd k7 3dnow stuff (there was already some support
> there).
hello,
i am just very new to inside ofthe gcc. i have somequestions .
1) because the k6 fpu is not pipelined , and the 3dnow units are ,
will just using the 3dnow operations for SFmode accelarate the code ?
2) or do we need some software pipelining or stuff tohave the real
power of packed data formats of 3dnow/mmx?
the pgcc already had mmx support , but i think they just added to
the md file and macros. so the code generated was even slower than the
withot mmx mode ...
last noteis .... i would like to contribute to the gcc . but dont
have much experience . any recomendations for a beginner ? like
helping with bugs etc ...
Erhan Bilgili
> I have done the above and it is working correctly.
>
> However there are one or two points (more optimizations)
> that I dont quite see how to handle, and wonder if there
> is someone there to whom I could pose a couple of questions?
>
> Thanks,
>
> William Schelter
> [actually i did the original i386.md and i386.h a long time
> ago when there was just m68k and a rough version of sparc].
>
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