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Re: VIA C3-2 support.


On Sun, Feb 09, 2003 at 07:18:31PM +0100, Jan Hubicka wrote:

 > > Simple benchmarks on the C3-2 show that scheduling for 686 offers greater
 > > improvement than scheduling for 486 like on previous C3s.
 > Hmm, perhaps we can cook up some c3 specific scheudling?

I'm still trying to get relevant info like an optimisation guide
out of my contacts at VIA.  I agree that in the longrun, this
would be the way to go though (providing such a manual exists).

 > I don't like much the idea of simply aliasing the CPU to something else
 > much.  Adding new type for it would let you to define costs and
 > instruction selection (see tables in the front of i386.c)

Sure. If/When they release the info, I'll do this.

 > > Patch below is based upon Jeff Garziks original that got merged.
 > > As before with Jeff, I don't have a copyright assignment on file,
 > > but I'm prepared to offer this patch into public domain and let
 > > anyone do what they like with it.
 > 
 > You can't, as your code is infected by GPL.  You really need assignment
 > for anything nontrivial (perhaps this patch is trivial)

Its no less trivial IMO than the original C3 patch that went in, but
if it's deemed necessary, I'll go through the assignment process..

        Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs


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