--- /dev/null
+/* Copyright (C) 2009. Free Software Foundation, Inc.
+ Contributed by Xinliang David Li (davidxl@google.com) and
+ Raksit Ashok (raksit@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 GCC_L_IPO_H
+#define GCC_L_IPO_H
+
+/* Primary module's id (non-zero). If no module-info was read in, this will
+ be zero. */
+extern unsigned primary_module_id;
+
+/* The macro to test if the compilation is in light weight IPO mode.
+ In this mode, the source module being compiled will be compiled
+ together with 0 or more auxiliary modules. */
+#define L_IPO_COMP_MODE (primary_module_id != 0)
+
+/* The macro to test if the current module being parsed is the
+ primary source module. */
+#define L_IPO_IS_PRIMARY_MODULE (current_module_id == primary_module_id)
+
+/* The macro to test if the current module being parsed is an
+ auxiliary source module. */
+#define L_IPO_IS_AUXILIARY_MODULE (L_IPO_COMP_MODE && current_module_id \
+ && current_module_id != primary_module_id)
+
+/* Current module id. */
+extern unsigned current_module_id;
+extern struct gcov_module_info **module_infos;
+extern bool is_last_module (unsigned mod_id);
+
+extern unsigned num_in_fnames;
+extern int at_eof;
+extern bool parser_parsing_start;
+
+void push_module_scope (void);
+void pop_module_scope (void);
+tree lipo_save_decl (tree src);
+void lipo_restore_decl (tree, tree);
+void add_decl_to_current_module_scope (tree decl, void *b);
+int lipo_cmp_type (tree t1, tree t2);
+tree get_type_or_decl_name (tree);
+
+#endif