graph.c (print_graph_cfg): Make function names visible and append parenthesis to it.

2015-03-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

   gcc/
    * graph.c (print_graph_cfg): Make function names visible and append
    parenthesis to it.  Also make groups of basic blocks belonging to the
    same function visible.

From-SVN: r221412

gcc/ChangeLog

+2015-03-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	* graph.c (print_graph_cfg): Make function names visible and append
+	parenthesis to it.  Also make groups of basic blocks belonging to the
+	same function visible.
+
 2015-03-12  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/44563

gcc/graph.c

@@ -292,9 +292,10 @@ print_graph_cfg (const char *base, struct function *fun)
   pretty_printer graph_slim_pp;
   graph_slim_pp.buffer->stream = fp;
   pretty_printer *const pp = &graph_slim_pp;
-  pp_printf (pp, "subgraph \"%s\" {\n"
-	         "\tcolor=\"black\";\n"
-		 "\tlabel=\"%s\";\n",
+  pp_printf (pp, "subgraph \"cluster_%s\" {\n"
+		 "\tstyle=\"dashed\";\n"
+		 "\tcolor=\"black\";\n"
+		 "\tlabel=\"%s ()\";\n",
 		 funcname, funcname);
   draw_cfg_nodes (pp, fun);
   draw_cfg_edges (pp, fun);