obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

6 files changed, 378 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/performance/21_strings/append-1.cc b/libstdc++-v3/testsuite/performance/21_strings/append-1.cc
new file mode 100644
index 000000000..60a9a8654
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/append-1.cc
@@ -0,0 +1,77 @@
+ // Copyright (C) 2003, 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 <ctime>
+#include <iostream>
+#include <string>
+#include <testsuite_performance.h>
+
+using namespace std;
+
+void
+test_append_char(int how_much)
+{
+  string buf; // no preallocation
+  for (int i = 0; i < how_much; ++i)
+    buf.append(static_cast<string::size_type>(1) , 'x');
+}
+
+void
+test_append_string(int how_much)
+{
+  string s(static_cast<string::size_type>(1) , 'x');
+  string buf; // no preallocation
+  for (int i = 0; i < how_much; ++i)
+    buf.append(s);
+}
+
+void 
+run_benchmark1(int how_much)
+{
+  using namespace __gnu_test;
+  time_counter time;
+  resource_counter resource;
+  start_counters(time, resource);
+  test_append_char(how_much);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "char", time, resource);
+}
+
+void 
+run_benchmark2(int how_much)
+{
+  using namespace __gnu_test;
+  time_counter time;
+  resource_counter resource;
+  start_counters(time, resource);
+  test_append_string(how_much);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "string", time, resource);
+}
+
+// libstdc++/5380
+// libstdc++/4960
+int main()
+{
+  run_benchmark1(100000);
+  run_benchmark2(100000);
+  run_benchmark1(1000000);
+  run_benchmark2(1000000);
+  run_benchmark1(10000000);
+  run_benchmark2(10000000);
+}
diff --git a/libstdc++-v3/testsuite/performance/21_strings/append-2.cc b/libstdc++-v3/testsuite/performance/21_strings/append-2.cc
new file mode 100644
index 000000000..8c44cb0f0
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/append-2.cc
@@ -0,0 +1,46 @@
+// Copyright (C) 2004, 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 <string>
+#include <testsuite_performance.h>
+
+// Short strings didn't grow quickly...
+void test01()
+{
+  using namespace __gnu_test;
+  time_counter time;
+  resource_counter resource;
+
+  start_counters(time, resource);
+  for (unsigned i = 0; i < 200000; ++i)
+    {
+      std::string a;
+      for (unsigned j = 0; j < 400; ++j)
+	a.append(1, 'x');
+    }
+  stop_counters(time, resource);
+
+  report_performance(__FILE__, "", time, resource);
+  clear_counters(time, resource);
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/performance/21_strings/cons_input_iterator.cc b/libstdc++-v3/testsuite/performance/21_strings/cons_input_iterator.cc
new file mode 100644
index 000000000..fcf3eb893
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/cons_input_iterator.cc
@@ -0,0 +1,49 @@
+// Copyright (C) 2004, 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 <iterator>
+#include <sstream>
+
+#include <testsuite_performance.h>
+
+void benchmark(long len)
+{
+  using namespace std;
+  using namespace __gnu_test;
+
+  time_counter time;
+  resource_counter resource;
+
+  istringstream isstr(string(len, 'a'));
+  
+  start_counters(time, resource);
+  string str((istreambuf_iterator<char>(isstr)),
+	     istreambuf_iterator<char>());
+  stop_counters(time, resource);
+
+  report_performance(__FILE__, "", time, resource);
+  clear_counters(time, resource);
+}
+
+int main()
+{
+  benchmark(500000);
+  benchmark(5000000);
+  benchmark(50000000);
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/performance/21_strings/copy_cons_and_dest.cc b/libstdc++-v3/testsuite/performance/21_strings/copy_cons_and_dest.cc
new file mode 100644
index 000000000..1ec18d3e4
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/copy_cons_and_dest.cc
@@ -0,0 +1,52 @@
+// 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 <string>
+#include <testsuite_performance.h>
+
+void benchmark(long len)
+{
+  using namespace std;
+  using namespace __gnu_test;
+
+  time_counter time;
+  resource_counter resource;
+  
+  start_counters(time, resource);
+  string a("1");
+  for (long i = 0; i < len; ++i)
+    {
+      string ss1(a);
+      string ss2(ss1);
+      string ss3(ss2);
+      string ss4(ss3);
+      string ss5(ss4);
+    }
+  stop_counters(time, resource);
+
+  report_performance(__FILE__, "", time, resource);
+  clear_counters(time, resource);
+}
+
+int main()
+{
+  benchmark(1000000);
+  benchmark(10000000);
+  benchmark(100000000);
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/performance/21_strings/find.cc b/libstdc++-v3/testsuite/performance/21_strings/find.cc
new file mode 100644
index 000000000..eeda0802b
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/find.cc
@@ -0,0 +1,96 @@
+ // Copyright (C) 2004, 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 <string>
+#include <testsuite_performance.h>
+
+void
+test_pair(const std::string& s, const std::string& f, int n)
+{
+  std::string::size_type sz = 0;
+
+  for (int i = 0; i < n; ++i)
+    sz = s.find(f);
+}
+
+int main()
+{
+  using namespace std;
+  using namespace __gnu_test;
+
+  time_counter time;
+  resource_counter resource;
+
+  const unsigned int iterations = 2000000;
+
+  string s, f;
+  s = "aabbaabbaaxd adbffdadgaxaabbbddhatyaaaabbbaabbaabbcsy";
+  f = "aabbaabbc";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "1", time, resource);
+  clear_counters(time, resource);
+
+  f = "aabbb";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "2", time, resource);
+  clear_counters(time, resource);
+
+  f = "xd";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "3", time, resource);
+  clear_counters(time, resource);
+
+  s = "dhruv is a very very good boy ;-)";
+  f = "very";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "4", time, resource);
+  clear_counters(time, resource);
+
+  f = "bad";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "5", time, resource);
+  clear_counters(time, resource);
+
+  f = "extra irritating";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "6", time, resource);
+  clear_counters(time, resource);
+
+  s = "this is a very this is a very this is a verty this is a very "
+      "this is a very long sentence";
+  f = "this is a very long sentence";
+  start_counters(time, resource);
+  test_pair(s, f, iterations);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "7", time, resource);
+  clear_counters(time, resource);
+
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/performance/21_strings/hash.cc b/libstdc++-v3/testsuite/performance/21_strings/hash.cc
new file mode 100644
index 000000000..0c409c5da
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/hash.cc
@@ -0,0 +1,58 @@
+#include <string>
+#include <vector>
+#include <unordered_set>
+#include <cstdlib>
+#include <random>
+#include <testsuite_performance.h>
+
+using namespace std;
+
+vector<string>
+random_strings(int n, int len)
+{
+  string s(len, '\0');
+  unordered_set<string> result_set;
+  random_device rd;
+  while (result_set.size() < n)
+    {
+      result_set.insert(s);
+      unsigned int tmp = rd();
+      tmp %= len * 256;
+      s[tmp / 256] = tmp % 256;
+    }
+  return vector<string>(result_set.begin(), result_set.end());
+}
+
+int
+main(int argc, char **argv)
+{
+  using namespace __gnu_test;
+  time_counter time;
+  resource_counter resource;
+
+  int string_size = 71;
+  int num_strings = 6000000;
+  if (argc > 1)
+    {
+      string_size = atoi(argv[1]);
+      if (argc > 2) 
+	num_strings = atoi(argv[2]);
+    }
+
+  // Construct random strings.
+  vector<string> v = random_strings(num_strings, string_size);
+
+  // Time hashing.
+  size_t tmp = 0;  // prevent compiler from optimizing away all the work
+  start_counters(time, resource);
+  for (int i = 0; i < num_strings; i++)
+    tmp += hash<string>()(v[i]);
+  stop_counters(time, resource);
+
+  if (tmp != 0 || argc < 9) // use tmp to prevent compiler optimization
+    report_performance(__FILE__, "", time, resource);
+
+  clear_counters(time, resource);
+
+  return 0;
+}