[GOOGLE] Sets cgraph_node count during annotation

[Dehao Chen]

This patch sets cgraph_node count during AutoFDO annotation, otherwise
execute_fixup_cfg will clear all the BB counts.

bootstrapped and passed regression test.

OK for google-4_8 branch?

Thanks,
Dehao

Index: gcc/auto-profile.c
===================================================================
--- gcc/auto-profile.c (revision 202753)
+++ gcc/auto-profile.c (working copy)
@@ -1234,6 +1234,7 @@ afdo_annotate_cfg (void)

   if (s == NULL)
     return;
+  cgraph_get_node (current_function_decl)->count = s->head_count ();
   ENTRY_BLOCK_PTR->count = s->head_count ();
   gcov_type max_count = ENTRY_BLOCK_PTR->count;