https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107661
--- Comment #16 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Martin Jambor <jamb...@gcc.gnu.org>: https://gcc.gnu.org/g:c4a92a9117a034e7cf291ae51d8b9b844fb5a88b commit r13-4238-gc4a92a9117a034e7cf291ae51d8b9b844fb5a88b Author: Martin Jambor <mjam...@suse.cz> Date: Tue Nov 22 18:22:03 2022 +0100 ipa-cp: Do not be too optimistic about self-recursive edges (PR 107661) PR 107661 shows that function push_agg_values_for_index_from_edge should not attempt to optimize self-recursive call graph edges when called from cgraph_edge_brings_all_agg_vals_for_node. Unlike when being called from find_aggregate_values_for_callers_subset, we cannot expect that any cloning for constants would lead to the edge leading from a new clone to the same new clone, in this case it would only be redirected to a new callee. Fixed by adding a parameter to push_agg_values_from_edge whether being optimistic about self-recursive edges is possible. gcc/ChangeLog: 2022-11-22 Martin Jambor <mjam...@suse.cz> PR ipa/107661 * ipa-cp.cc (push_agg_values_from_edge): New parameter optimize_self_recursion, use it to decide whether to pass interim to the helper function. (find_aggregate_values_for_callers_subset): Pass true in the new parameter of push_agg_values_from_edge. (cgraph_edge_brings_all_agg_vals_for_node): Pass false in the new parameter of push_agg_values_from_edge. gcc/testsuite/ChangeLog: 2022-11-22 Martin Jambor <mjam...@suse.cz> PR ipa/107661 * g++.dg/ipa/pr107661.C: New test.
