[Bug target/34163] [4.3/4.4/4.5 Regression] 10% performance regression since Nov 1 on Polyhedron's "NF" on AMD64

[rguenther at suse dot de]

------- Comment #18 from rguenther at suse dot de  2009-07-03 09:08 -------
Subject: Re:  [4.3/4.4/4.5 Regression] 10% performance
 regression since Nov 1 on Polyhedron's "NF" on AMD64

On Fri, 3 Jul 2009, ubizjak at gmail dot com wrote:

> ------- Comment #17 from ubizjak at gmail dot com  2009-07-03 08:46 -------
> (In reply to comment #16)
> 
> > One of the cases SCEV is confused about pointer-plus offsets being sizetype:
> 
> Do we have a solution for this problem...?

My hope is that no-undefined-overflow will somehow magically solve
these problems ... otherwise no, there is unfortunately no way out
here.

Richard.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34163