[PATCH] PR fortran/31593: Speed up loops with DO variables as procedure arguments

Tobias Schlüter Tobias.Schlueter@physik.uni-muenchen.de
Tue Aug 25 11:41:00 GMT 2009


Hi Dominique,

Dominique Dhumieres wrote:
> I have tested your patch on the polyhedron suite and have found
> a slowdown (~15%) on the air.f90 test. As far as I can tell, it
> is another incarnation of pr40106: a significant increase of the
> call to pow:

I assume the slowdown happens only with -fwhole-file?  I didn't use that 
option in my benchmarks which is why I didn't see it.  I did see lots of 
weird collateral damage with other speedup patches that I tried.

I'm not sure how to deal with this.

Cheers,
- Tobi

-- 
Tobias Schlüter
Am Coulombwall 1, Zi. 326
85748 Garching b. München
Tel.: +49/89/289-14139



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