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[Bug tree-optimization/42652] vectorizer created unaligned vector insns
- From: "irar at il dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Jan 2010 08:22:49 -0000
- Subject: [Bug tree-optimization/42652] vectorizer created unaligned vector insns
- References: <bug-42652-391@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from irar at il dot ibm dot com 2010-01-10 08:22 -------
In vector_alignment_reachable_p() we check if an access is packed using
contains_packed_reference(). For packed accesses we return false, meaning
alignment is unreachable and peeling cannot be used.
In the attached testcase contains_packed_reference() returns false for
palette_5.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42652