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[Bug tree-optimization/34223] missed optimization - complete unrolling pass before the vectorizer
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Nov 2007 13:36:20 -0000
- Subject: [Bug tree-optimization/34223] missed optimization - complete unrolling pass before the vectorizer
- References: <bug-34223-13229@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from steven at gcc dot gnu dot org 2007-11-25 13:36 -------
Why is this a shift not supported:
not vectorized: relevant stmt not supported: D.1652_13 = j_29 << 3
Is j_29*8 supported (i.e. if you hack this expression to turn it into a
MULT_EXPR), does the vectorizer work then??
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34223