https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68787
--- Comment #5 from vries at gcc dot gnu.org --- Created attachment 38189 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38189&action=edit patch to recompute restrict info after ipa-pta (In reply to Richard Biener from comment #4) > 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. That sound similar to what I've tried here: https://gcc.gnu.org/ml/gcc-patches/2015-12/msg01257.html . Attaching a more minimal version. But it doesn't affect the testcase, and I'm not sure how it could (perhaps it will affect another test-case, I'm not sure). For the listed testcase, after ipa-pta we have: ... __attribute__((noclone, noinline)) bar (intD.6 * aD.1755, intD.6 * bD.1756) { # PT = nonlocal intD.6 * a_2(D) = aD.1755; # PT = nonlocal intD.6 * b_4(D) = bD.1756; intD.6 _6; intD.6 _7; ... There's nothing to take advantage of by trying to reannotate with restrict.
