I can't believe I havn't done work on my home machine in
	nearly a month...
        * alias.c (base_alias_check): Accept new args for the modes of the
        two references.  Use them to determine if an AND can overlap.  Update
        all callers.
        (memrefs_conflict_p): Assume sizes are aligned, and uses them
        to determine if an AND can overlap.

From-SVN: r23060