http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49946
--- Comment #2 from Igor Zamyatin <izamyatin at gmail dot com> 2011-08-08 11:35:32 UTC --- cunrolli does not handle the loop in the testcase because of the condition "ul == UL_NO_GROWTH && unr_insns > ninsns" in try_unroll_loop_completely. Meanwhile may_increase_size is true in tree_unroll_loops_completely.
