--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/lra.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,44 @@
+/* Communication between the Local Register Allocator (LRA) and
+   the rest of the compiler.
+   Copyright (C) 2010-2017 Free Software Foundation, Inc.
+   Contributed by Vladimir Makarov <vmakarov@redhat.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_LRA_H
+#define GCC_LRA_H
+
+extern bool lra_simple_p;
+
+/* Return the allocno reg class of REGNO.  If it is a reload pseudo,
+   the pseudo should finally get hard register of the allocno
+   class.  */
+static inline enum reg_class
+lra_get_allocno_class (int regno)
+{
+  resize_reg_info ();
+  return reg_allocno_class (regno);
+}
+
+extern rtx lra_create_new_reg (machine_mode, rtx, enum reg_class,
+			       const char *);
+extern rtx lra_eliminate_regs (rtx, machine_mode, rtx);
+extern void lra (FILE *);
+extern void lra_init_once (void);
+extern void lra_finish_once (void);
+
+#endif /* GCC_LRA_H */