--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/context.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,44 @@
+/* context.c - Holder for global state
+   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+
+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/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "context.h"
+#include "pass_manager.h"
+#include "dumpfile.h"
+#include "realmpfr.h"
+
+/* The singleton holder of global state: */
+gcc::context *g;
+
+gcc::context::context ()
+  : m_passes (NULL), m_dumps (new gcc::dump_manager ())
+{
+  have_offload = false;
+}
+
+gcc::context::~context ()
+{
+  delete m_passes;
+  delete m_dumps;
+
+  /* Release MPFR caches to avoid Valgrind leak reports.  */
+  mpfr_free_cache ();
+}