--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/profile.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,47 @@
+/* Header file for minimum-cost maximal flow routines used to smooth basic
+   block and edge frequency counts.
+   Copyright (C) 2008
+   Free Software Foundation, Inc.
+   Contributed by Paul Yuan (yingbo.com@gmail.com)
+       and Vinodha Ramasamy (vinodha@google.com).
+
+This file is part of GCC.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef PROFILE_H
+#define PROFILE_H
+
+/* Additional information about edges. */
+struct edge_info
+{
+  unsigned int count_valid:1;
+
+  /* Is on the spanning tree.  */
+  unsigned int on_tree:1;
+
+  /* Pretend this edge does not exist (it is abnormal and we've
+     inserted a fake to compensate).  */
+  unsigned int ignore:1;
+};
+
+#define EDGE_INFO(e)  ((struct edge_info *) (e)->aux)
+
+/* Smoothes the initial assigned basic block and edge counts using
+   a minimum cost flow algorithm. */
+extern void mcf_smooth_cfg (void);
+
+extern gcov_type sum_edge_counts (VEC (edge, gc) *edges);
+
+#endif /* PROFILE_H */