http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55257
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-12 07:51:26 UTC --- If the target doesn't call final_start_function and final_end_function in output_mi_thunk targhook (or equivalent), it is a target bug.