Improve dumps of afdo_calculate_branch_prob

[Jan Hubicka]

Hi,
this patch makes dumps of afdo_calculate_branch_prob bit more easy to
follow.

Bootstrapped/regtested x86_64-linux, comitted.

gcc/ChangeLog:

        * auto-profile.cc (afdo_calculate_branch_prob): Improve dump file.

diff --git a/gcc/auto-profile.cc b/gcc/auto-profile.cc
index a2be7556c3f..6971204ddf5 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);