http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50749
--- Comment #1 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2011-10-16 23:33:40 UTC --- GCC makes usual mem accesses into those with post_inc/pre_dec at auto_inc_dec pass. I guess that auto_inc_dec pass can't find post_inc insns well in that case because other tree/rtl optimizers tweak the code already. If this is the case, the problem would be not target specific.
