[Bug tree-optimization/68787] fipa-pta to interpret restrict

[rguenth at gcc dot gnu.org]

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.