Clean-up IPA profile dump output.

2018-01-23  Martin Liska  <mliska@suse.cz>

	* tree-profile.c (tree_profiling): Print function header to
	aware reader which function we are working on.
	* value-prof.c (gimple_find_values_to_profile): Do not print
	not interesting value histograms.

From-SVN: r256983

gcc/ChangeLog

 2018-01-23  Martin Liska  <mliska@suse.cz>
 
+	* tree-profile.c (tree_profiling): Print function header to
+	aware reader which function we are working on.
+	* value-prof.c (gimple_find_values_to_profile): Do not print
+	not interesting value histograms.
+
+2018-01-23  Martin Liska  <mliska@suse.cz>
+
 	* profile-count.h (enum profile_quality): Add
 	profile_uninitialized as the first value. Do not number values
 	as they are zero based.

gcc/tree-profile.c

@@ -52,6 +52,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "params.h"
 #include "stringpool.h"
 #include "attribs.h"
+#include "tree-pretty-print.h"
 
 static GTY(()) tree gcov_type_node;
 static GTY(()) tree tree_interval_profiler_fn;
@@ -671,6 +672,9 @@ tree_profiling (void)
 
       push_cfun (DECL_STRUCT_FUNCTION (node->decl));
 
+      if (dump_file)
+	dump_function_header (dump_file, cfun->decl, dump_flags);
+
       /* Local pure-const may imply need to fixup the cfg.  */
       if (execute_fixup_cfg () & TODO_cleanup_cfg)
 	cleanup_tree_cfg ();

gcc/value-prof.c

@@ -2053,7 +2053,7 @@ gimple_find_values_to_profile (histogram_values *values)
 	default:
 	  gcc_unreachable ();
 	}
-      if (dump_file)
+      if (dump_file && hist->hvalue.stmt != NULL)
         {
 	  fprintf (dump_file, "Stmt ");
           print_gimple_stmt (dump_file, hist->hvalue.stmt, 0, TDF_SLIM);