Re: [Patch, gfortran]: Enable loop unrolling for the matmul intrinsic.

[Janne Blomqvist <jblomqvi at cc dot hut dot fi>]

On Sat, Dec 10, 2005 at 12:55:33PM -0800, Steve Kargl wrote:
> On Sat, Dec 10, 2005 at 05:54:55PM +0200, Janne Blomqvist wrote:
> > PING!
> > 
> > Since I posted the patch, another benchmark result was reported, for
> > P4 and P2:
> > 
> > http://gcc.gnu.org/ml/fortran/2005-12/msg00083.html
> > 
> > Those results show that unrolling is a big win for P4, and a slightt
> > smaller improvement for P2. To summarize, performance improvement at
> > the size where maximum performance is achieved for double precision:
> > 
> > K8 (size 64): 30 %
> > 
> > P4 (size 32): 55 %
> > 
> > P2 (size 32): 35 %
> > 
> > ppc970 (size ?): 14 %
> > 
> > I think that covers the majority of hardware where gfortran is used.
> > 
> 
> OK for mainline; wait a few days for 4.1.

Committed to trunk. Thanks.


-- 
Janne Blomqvist

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