[Bug tree-optimization/32921] [4.3 Regression] Revision 126326 causes 12% slowdown

[rguenther at suse dot de]

------- Comment #7 from rguenther at suse dot de  2007-07-28 20:59 -------
Subject: Re:  [4.3 Regression]  Revision 126326
 causes 12% slowdown

On Sat, 28 Jul 2007, hjl at lucon dot org wrote:

> causes this performance regression.
> 
> 437.leslie3d is a big file with 19 functions. If I put each function in
> a separate file, there is no regression. If I put 2 particular functions
> in one file, there are 10-30% regressions depending on input file. Those
> 2 functions work on several global arrays.
> 
> I tried " --param max-aliased-vops=1000000 --param avg-aliased-vops=7".
> It doesn't make a difference.

This sounds strange and maybe relates this to PR32624.

Richard.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32921