--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/gimple-match.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,70 @@
+/* Gimple simplify definitions.
+
+   Copyright (C) 2011-2017 Free Software Foundation, Inc.
+   Contributed by Richard Guenther <rguenther@suse.de>
+
+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_GIMPLE_MATCH_H
+#define GCC_GIMPLE_MATCH_H
+
+
+/* Helper to transparently allow tree codes and builtin function codes
+   exist in one storage entity.  */
+class code_helper
+{
+public:
+  code_helper () {}
+  code_helper (tree_code code) : rep ((int) code) {}
+  code_helper (combined_fn fn) : rep (-(int) fn) {}
+  operator tree_code () const { return (tree_code) rep; }
+  operator combined_fn () const { return (combined_fn) -rep; }
+  bool is_tree_code () const { return rep > 0; }
+  bool is_fn_code () const { return rep < 0; }
+  int get_rep () const { return rep; }
+private:
+  int rep;
+};
+
+/* Return whether OPS[0] with CODE is a non-expression result and
+   a gimple value.  */
+
+inline bool
+gimple_simplified_result_is_gimple_val (code_helper code, tree *ops)
+{
+  return (code.is_tree_code ()
+	  && (TREE_CODE_LENGTH ((tree_code) code) == 0
+	      || ((tree_code) code) == ADDR_EXPR)
+	  && is_gimple_val (ops[0]));
+}
+
+extern tree (*mprts_hook) (code_helper, tree, tree *);
+
+bool gimple_simplify (gimple *, code_helper *, tree *, gimple_seq *,
+		      tree (*)(tree), tree (*)(tree));
+bool gimple_resimplify1 (gimple_seq *, code_helper *, tree, tree *,
+			 tree (*)(tree));
+bool gimple_resimplify2 (gimple_seq *, code_helper *, tree, tree *,
+			 tree (*)(tree));
+bool gimple_resimplify3 (gimple_seq *, code_helper *, tree, tree *,
+			 tree (*)(tree));
+tree maybe_push_res_to_seq (code_helper, tree, tree *,
+			    gimple_seq *, tree res = NULL_TREE);
+void maybe_build_generic_op (enum tree_code, tree, tree *);
+
+
+#endif  /* GCC_GIMPLE_MATCH_H */