[Bug tree-optimization/41101] [4.4/4.5 Regression] ICE in compute_antic, at tree-ssa-pre.c:2419

["dberlin at dberlin dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #14 from dberlin at gcc dot gnu dot org  2009-09-06 14:15 -------
Subject: Re:  [4.4/4.5 Regression] ICE in 
        compute_antic, at tree-ssa-pre.c:2419

On Sun, Sep 6, 2009 at 8:41 AM, rguenth at gcc dot gnu dot
org<gcc-bugzilla@gcc.gnu.org> wrote:
>
>
> ------- Comment #12 from rguenth at gcc dot gnu dot org  2009-09-06 12:41 -------
> This is what I am thinking of:

Think harder ;)

The maximal set is the initialization vector for this problem.
If we were using sbitmaps, it would be the equivalent of all ones.

Adding more things to it in the middle of the problem can't possibly be right.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41101

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