Displaying 2 results from an estimated 2 matches for "pfpnacc".
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2fpnacl
2004 Aug 06
2
[PATCH] Make SSE Run Time option.
On Thu, 15 Jan 2004, Ian Ollmann wrote:
> On Thu, 15 Jan 2004, Jean-Marc Valin wrote:
>
> > > Personally, I don't think much of PNI. The complex arithmetic stuff they
> > > added sets you up for a lot of permute overhead that is inefficient --
> > > especially on a processor that is already weak on permute. In my opinion,
> >
> > Actually, the new
2004 Aug 06
0
[PATCH] Make SSE Run Time option.
Actually, I'm not denying you can do pretty fast complex multiplies by
separating real from imaginary. What I'm saying is that with addsubps,
you can do a better job when you have the complex numbers packed, then
you can do with SSE1 only. I still think AMD got it better with its
pfpnacc instruction and Intel should have gone much further.
<p>Le jeu 15/01/2004 à 19:28, Ian Ollmann a écrit :
> On Thu, 15 Jan 2004, Ian Ollmann wrote:
>
> > On Thu, 15 Jan 2004, Jean-Marc Valin wrote:
> >
> > > > Personally, I don't think much of PNI. The comp...