https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123986
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- So the issue is we're analyzing the same node multiple times and that makes vect_simd_clone_data _data; vect_simd_clone_data &data = slp_node->get_data (_data); inconsistent with the intent to have this be _data when analyzing (cost_vec != NULL). That causes a ->data to be overwritten by garbage at: 4538 slp_node->data = new vect_simd_clone_data (std::move (_data)); but the point is of course we should not be analyzing a node twice. We're doing this because we are also supporting a "rollback" of some sorts. Testing a patch.
