AMD Geode processor optimisations for GCC 3.4.4
Vladimir Makarov
vmakarov@redhat.com
Tue Feb 20 15:13:00 GMT 2007
Frans Grotepass wrote:
>Hi all.
>
>We use Linux in an embedded solution. We use the Elinos suite to create
>trimmed down distributions. The suite has GCC-3.4.4 as compiler. Since we use
>some image processing, I would like to check the advantages in using possible
>compiler optimisations for the Geode. What are the optimal choice for the
>Geode within GCC-3.4.4?
>
>
I'd try -mtune=k6 and -mtune=pentium2 or analogous -mcpu. K6 is
probably closer to geode except for aligning. Geode is less sensitive
to alignment so you could try to use -falign-{function,jump...}=0 and
get smaller size which is pretty important for embedded solution.
As for fp performance, I don't know what to advice because pipeline of
geode is different from k6 and i686 (pentium2). Only benchmarking you
application will tell you what to use.
>
>
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