auto-profile.c (afdo_annotate_cfg): Call update_max_bb_count even if autofdo counts are all zeros.

	* auto-profile.c (afdo_annotate_cfg): Call update_max_bb_count even
	if autofdo counts are all zeros.

From-SVN: r267121

gcc/ChangeLog

 2018-12-14  Bin Cheng  <bin.cheng@linux.alibaba.com>
 
+	* auto-profile.c (afdo_annotate_cfg): Call update_max_bb_count even
+	if autofdo counts are all zeros.
+
+2018-12-14  Bin Cheng  <bin.cheng@linux.alibaba.com>
+
 	* auto-profile.c (afdo_indirect_call): Skip generating histogram
 	value for internal call.
 

gcc/auto-profile.c

@@ -1553,9 +1553,9 @@ afdo_annotate_cfg (const stmt_set &promoted_stmts)
     {
       /* Calculate, propagate count and probability information on CFG.  */
       afdo_calculate_branch_prob (&annotated_bb);
+    }
   update_max_bb_count ();
   profile_status_for_fn (cfun) = PROFILE_READ;
-    }
   if (flag_value_profile_transformations)
     {
       gimple_value_profile_transformations ();