https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68787
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- One possibility would be to re-run non-IPA PTA just to compute restrict info, that is, instead of bailing out when cfun->gimple_df->ipa_pta just not update SSA pointer-info but still call compute_dependence_clique. Requires splitting of compute_points_to_sets into the actual compute and SSA pointer-info update parts.
