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[Bug tree-optimization/39300] vectorizer confused by predictive commoning and PRE
- From: "matz at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 9 Mar 2009 13:25:28 -0000
- Subject: [Bug tree-optimization/39300] vectorizer confused by predictive commoning and PRE
- References: <bug-39300-12182@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from matz at gcc dot gnu dot org 2009-03-09 13:25 -------
It's also PRE that produces such patterns, so moving predcom behind
vectorization alone won't help this problem.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39300