Simple change in dot dumper -- Display profile count and branch probability

[Xinliang David Li]

Hi, the graph dump file currently does not show any profile
information. The following simple patch fixed that.  Ok for trunk?

thanks,

David

2013-04-20  Xinliang David Li  <davi...@google.com>

        * graph.c (draw_cfg_node): Add count and frequency info.
        (draw_cfg_node_succ_edges): Add branch probility as label.

Index: graph.c
===================================================================
--- graph.c     (revision 198108)
+++ graph.c     (working copy)
@@ -110,6 +110,9 @@ draw_cfg_node (pretty_printer *pp, int f
   else
     {
       pp_character (pp, '{');
+      if (bb->count)
+       pp_printf (pp, "COUNT:" HOST_WIDEST_INT_PRINT_DEC, bb->count);
+      pp_printf (pp, " FREQ:%i |", bb->frequency);
       pp_write_text_to_stream (pp);
       dump_bb_for_graph (pp, bb);
       pp_character (pp, '}');
@@ -155,11 +158,12 @@ draw_cfg_node_succ_edges (pretty_printer

       pp_printf (pp,
                 "\tfn_%d_basic_block_%d:s -> fn_%d_basic_block_%d:n "
-                "[style=%s,color=%s,weight=%d,constraint=%s];\n",
+                "[style=%s,color=%s,weight=%d,constraint=%s,
label=\"[%i%%]\"];\n",
                 funcdef_no, e->src->index,
                 funcdef_no, e->dest->index,
                 style, color, weight,
-                (e->flags & (EDGE_FAKE | EDGE_DFS_BACK)) ? "false" : "true");
+                (e->flags & (EDGE_FAKE | EDGE_DFS_BACK)) ? "false" : "true",
+                e->probability * 100 / REG_BR_PROB_BASE);
     }
   pp_flush (pp);
 }