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[Bug tree-optimization/26197] [4.2 regression] ICE in is_old_name with vectorizer
- From: "dnovillo at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Feb 2006 14:38:24 -0000
- Subject: [Bug tree-optimization/26197] [4.2 regression] ICE in is_old_name with vectorizer
- References: <bug-26197-1771@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #12 from dnovillo at gcc dot gnu dot org 2006-02-28 14:38 -------
(In reply to comment #11)
> Makes sense to anyone?
>
Unfortunately yes. I am hoping that we will soon be able to get rid of all
this nonsense. The vectorizer is running against a very recalcitrant alias
pass. In particular, the alias grouping heuristic is getting in your way,
turning around the roles of memory tag and aliased symbols.
The approach you outline is fine.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26197