Re: Strange Performance Hit on 2D-Loop

[Andreas Schäfer <gentryx at gmx dot de>]

On 16:37 Thu 09 Jul     , Richard Guenther wrote:
> Depends on the GCC version used.  First of all
> 
>     printAddress(&gridNew[0][0]);
>     printAddress(&gridOld[0][0]);
> 
> makes the addresses escape and GCC versions other than the
> current development trunk think that the malloced address can
> alias the global variables.

AFAICS that doesn't really matter: I still get the same results, even
if I remove printAddress().

-Andreas


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Andreas Schäfer
Cluster and Metacomputing Working Group
Friedrich-Schiller-Universität Jena, Germany
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