--- /dev/null
+// Copyright (C) 2006, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library 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.
+
+// This library 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 this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+
+#include <tr1/unordered_map>
+#include <testsuite_performance.h>
+
+typedef std::tr1::unordered_map<int, int> map_type;
+typedef std::tr1::unordered_map<int, map_type> matrix_type;
+
+int main()
+{
+ using namespace __gnu_test;
+
+ time_counter time;
+ resource_counter resource;
+
+ const int sz = 1000;
+
+ matrix_type matrix;
+
+ start_counters(time, resource);
+ for (int iter = 0; iter < 50; ++iter)
+ {
+ for (int i = 0; i < sz; ++i)
+ {
+ for (int j = 0; j < sz; ++j)
+ {
+ map_type& row = matrix[i / 4];
+ ++row[j / 4];
+ }
+ }
+ }
+ stop_counters(time, resource);
+ report_performance(__FILE__, "", time, resource);
+
+ return 0;
+}