predict.c (counts_to_freqs): Make glolbal.

	* predict.c (counts_to_freqs): Make glolbal.
	* predict.h (counts_to_freqa): Declare.
	* profile.c (compute_branch_probabilities): Compute frequencies
	* tree-profile.c (do_tree_profiling): Refine conditional on when
	tree profiling pass is needed.

From-SVN: r88093

gcc/ChangeLog

 2004-09-25  Jan Hubicka  <jh@suse.cz>
 
+	* predict.c (counts_to_freqs): Make glolbal.
+	* predict.h (counts_to_freqa): Declare.
+	* profile.c (compute_branch_probabilities): Compute frequencies
+	* tree-profile.c (do_tree_profiling): Refine conditional on when
+	tree profiling pass is needed.
+
 	* passes.c (rest_of_handle_cfg): Disable const/pure function
 	detection when doing tree based profiling.
 

gcc/predict.c

@@ -76,7 +76,6 @@ static void dump_prediction (FILE *, enum br_predictor, int, basic_block, int);
 static void estimate_loops_at_level (struct loop *loop);
 static void propagate_freq (struct loop *);
 static void estimate_bb_frequencies (struct loops *);
-static int counts_to_freqs (void);
 static void predict_paths_leading_to (basic_block, int *, enum br_predictor, enum prediction);
 static bool last_basic_block_p (basic_block);
 static void compute_function_frequency (void);
@@ -1705,7 +1704,7 @@ estimate_loops_at_level (struct loop *first_loop)
 /* Convert counts measured by profile driven feedback to frequencies.
    Return nonzero iff there was any nonzero execution count.  */
 
-static int
+int
 counts_to_freqs (void)
 {
   gcov_type count_max, true_count_max = 0;

gcc/predict.h

@@ -41,5 +41,6 @@ enum prediction
 
 extern void predict_insn_def (rtx, enum br_predictor, enum prediction);
 extern void predict_insn (rtx, enum br_predictor, int);
+extern int counts_to_freqs (void);
 
 #endif  /* GCC_PREDICT_H */

gcc/profile.c

@@ -590,6 +590,7 @@ compute_branch_probabilities (void)
 	    num_branches++, num_never_executed;
 	}
     }
+  counts_to_freqs ();
 
   if (dump_file)
     {

gcc/tree-profile.c

@@ -160,12 +160,14 @@ tree_gen_const_delta_profiler (histogram_value value ATTRIBUTE_UNUSED,
 
 static bool do_tree_profiling (void)
 {
-  if (flag_tree_based_profiling)
+  if (flag_tree_based_profiling
+      && (profile_arc_flag || flag_test_coverage || flag_branch_probabilities))
     {
       tree_register_profile_hooks ();
       tree_register_value_prof_hooks ();
+      return true;
     }
-  return flag_tree_based_profiling;
+  return false;
 }
 
 /* Return the file on which profile dump output goes, if any.  */