VIA C3

[GerritKühn]

On Fri, Jun 13, 2003 at 06:33:56PM -0700, David Yeske wrote:

> Anyone have a VIA C3?  I'm running FreeBSD current
> on one and I don't see any gcc flags for the VIA C3.
> I think it has MMX and 3dnow, but it does not have SSE?

Up to the Ezra kernel the C3 doesn't suppoert SSE. Only the newest
C3-kernel named Nehemiah does have it.

> I was wondering what gcc flags other VIA C3 users
> are using on FreeBSD.  I am not sure what 
> optimizations are safe for this cpu running FreeBSD.

> CPU: VIA/IDT Unknown (998.70-MHz 686-class CPU)
>   Origin = "CentaurHauls"  Id = 0x689  Stepping = 9
>   Features=0x803035<FPU,DE,TSC,MSR,MTRR,PGE,MMX>

This one doesn't seem to support SSE, though I wonder why there is
this "unknown". My C3 here is an Ezra and is identified as "Samuel2"
with id=067a.

However, if you have a C3 without SSE, it's basically a K6 with MMX
and 3dNow. So I'm using "CPUTYPE=k6-3" in /etc/make.conf. Up to now
this has been working fine for me.



cu
  Gerrit
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