https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88936
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Jan Hubicka from comment #7) > Hi, > there is ipa_reduced_postorder that will compute SCCs and store scc > index. OK, from looking at examples it seems that I can access node->aux as ipa_dfs_info * after ipa_reduced_postorder and before I call ipa_free_postorder_info. To check whether a call is possibly recursing to the caller I'd then check whether the callers and the callees DFS number match. That works as far as direct calls are considered - but what about indirect calls? Not that I'm sure what to do when hitting a possibly recursive call - dropping all the way to pt_anything for arguments would be a bit harsh. But whether ensuring that we do not end up with a singleton composed of caller automatic vars is enough I'm not sure...
