https://gcc.gnu.org/g:8a16ca964180e6d6c4f86150cbda83ceb498b64a
commit r16-4169-g8a16ca964180e6d6c4f86150cbda83ceb498b64a Author: Jan Hubicka <[email protected]> Date: Wed Oct 1 18:14:48 2025 +0200 Improve dumps of afdo_calculate_branch_prob gcc/ChangeLog: * auto-profile.cc (afdo_calculate_branch_prob): Improve dump file. Diff: --- gcc/auto-profile.cc | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/gcc/auto-profile.cc b/gcc/auto-profile.cc index a2be7556c3fe..6971204ddf55 100644 --- a/gcc/auto-profile.cc +++ b/gcc/auto-profile.cc @@ -3902,24 +3902,41 @@ afdo_calculate_branch_prob (bb_set *annotated_bb) } if (!all_known || !total_count.nonzero_p ()) continue; + if (dump_file) + { + fprintf (dump_file, "Total count of bb %i is ", bb->index); + total_count.dump (dump_file); + fprintf (dump_file, "\n"); + } FOR_EACH_EDGE (e, ei, bb->succs) if (AFDO_EINFO (e)->is_annotated ()) { + profile_count cnt = AFDO_EINFO (e)->get_count (); /* If probability is 1, preserve reliable static prediction (This is, for example the case of single fallthru edge or single fallthru plus unlikely EH edge.) */ - if (AFDO_EINFO (e)->get_count () == total_count + if (cnt == total_count && e->probability == profile_probability::always ()) ; - else if (AFDO_EINFO (e)->get_count ().nonzero_p ()) + else if (cnt.nonzero_p ()) e->probability - = AFDO_EINFO (e)->get_count ().probability_in (total_count); + = cnt.probability_in (total_count); /* If probability is zero, preserve reliable static prediction. */ else if (e->probability.nonzero_p () || e->probability.quality () == GUESSED) e->probability = profile_probability::never ().afdo (); + if (dump_file) + { + fprintf (dump_file, " probability of edge %i->%i" + " with count ", + e->src->index, e->dest->index); + cnt.dump (dump_file); + fprintf (dump_file, " set to "); + e->probability.dump (dump_file); + fprintf (dump_file, "\n"); + } } } afdo_adjust_guessed_profile (annotated_bb);
