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Re: PRE (sometimes) confuses ivopts/scev?


On Wed, 26 Jan 2005, Richard Guenther wrote:

> and the code produced is even better than before with -fno-tree-pre!
>
> For a runtime test of the tramp3d testcase we gain about 2% in
> runtime compared to -fno-tree-pre and about 5% compared to -ftree-pre
> without your patch.

Btw., we take a compile-time hit of ~0.5% for the tramp3d testcase,
but this could well be noise.

Richard.

--
Richard Guenther <richard dot guenther at uni-tuebingen dot de>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/


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