[Bug tree-optimization/42652] vectorizer created unaligned vector insns

[irar at il dot ibm dot com]

------- 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.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42652