http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56181
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-06 14:20:30 UTC --- Created attachment 29368 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29368 patch to make flow_loops_find work in-place One idea is, as in the attached patch, to unify flow_loops_find and fix_loop_structure. Basically re-discover loops, but in-place. Doesn't work as-is - loop size is off for some reason. This way fix_loop_structure would also discover new loops (and eventually we'd simply run it at loop_optimizer_init time - which of course will hide pass bugs).
