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diff --git a/tests/benchmarks/corelib/tools/qhash/tst_bench_qhash.cpp b/tests/benchmarks/corelib/tools/qhash/tst_bench_qhash.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2016 Intel Corporation.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "tst_bench_qhash.h"
+
+#include <QFile>
+#include <QHash>
+#include <QString>
+#include <QStringList>
+#include <QUuid>
+#include <QTest>
+
+
+class tst_QHash : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void initTestCase();
+    void qhash_current_data() { data(); }
+    void qhash_current() { qhash_template<QString>(); }
+    void qhash_qt50_data() { data(); }
+    void qhash_qt50() { qhash_template<Qt50String>(); }
+    void qhash_qt4_data() { data(); }
+    void qhash_qt4() { qhash_template<Qt4String>(); }
+    void qhash_javaString_data() { data(); }
+    void qhash_javaString() { qhash_template<JavaString>(); }
+
+    void hashing_current_data() { data(); }
+    void hashing_current() { hashing_template<QString>(); }
+    void hashing_qt50_data() { data(); }
+    void hashing_qt50()  { hashing_template<Qt50String>(); }
+    void hashing_qt4_data() { data(); }
+    void hashing_qt4() { hashing_template<Qt4String>(); }
+    void hashing_javaString_data() { data(); }
+    void hashing_javaString() { hashing_template<JavaString>(); }
+
+private:
+    void data();
+    template <typename String> void qhash_template();
+    template <typename String> void hashing_template();
+
+    QStringList smallFilePaths;
+    QStringList uuids;
+    QStringList dict;
+    QStringList numbers;
+};
+
+///////////////////// QHash /////////////////////
+
+#include <QDebug>
+
+void tst_QHash::initTestCase()
+{
+    // small list of strings (that happen to look like file paths produced long
+    // ago by cd ../.. && find . -print, but that's irrelevant).
+    QFile smallPathsData(QFINDTESTDATA("paths_small_data.txt"));
+    QVERIFY(smallPathsData.open(QIODevice::ReadOnly));
+    smallFilePaths = QString::fromLatin1(smallPathsData.readAll()).split(QLatin1Char('\n'));
+    QVERIFY(!smallFilePaths.isEmpty());
+
+    // list of UUIDs
+    // guaranteed to be completely random, generated by http://xkcd.com/221/
+    QUuid ns = QUuid("{f43d2ef3-2fe9-4563-a6f5-5a0100c2d699}");
+    uuids.reserve(smallFilePaths.size());
+
+    foreach (const QString &path, smallFilePaths)
+        uuids.append(QUuid::createUuidV5(ns, path).toString());
+
+
+    // lots of strings with alphabetical characters, vaguely reminiscent of
+    // a dictionary.
+    //
+    // this programatically generates a series like:
+    //  AAAAAA
+    //  AAAAAB
+    //  AAAAAC
+    //  ...
+    //  AAAAAZ
+    //  AAAABZ
+    //  ...
+    //  AAAAZZ
+    //  AAABZZ
+    QByteArray id("AAAAAAA");
+
+    if (dict.isEmpty()) {
+        for (int i = id.length() - 1; i > 0;) {
+            dict.append(id);
+            char c = id.at(i);
+            id[i] = ++c;
+
+            if (c == 'Z') {
+                // wrap to next digit
+                i--;
+                id[i] = 'A';
+            }
+        }
+    }
+
+    // string versions of numbers.
+    for (int i = 5000000; i < 5005001; ++i)
+        numbers.append(QString::number(i));
+}
+
+void tst_QHash::data()
+{
+    QTest::addColumn<QStringList>("items");
+    QTest::newRow("paths-small") << smallFilePaths;
+    QTest::newRow("uuids-list") << uuids;
+    QTest::newRow("dictionary") << dict;
+    QTest::newRow("numbers") << numbers;
+}
+
+template <typename String> void tst_QHash::qhash_template()
+{
+    QFETCH(QStringList, items);
+    QHash<String, int> hash;
+
+    QList<String> realitems;
+    foreach (const QString &s, items)
+        realitems.append(s);
+
+    QBENCHMARK {
+        for (int i = 0, n = realitems.size(); i != n; ++i) {
+            hash[realitems.at(i)] = i;
+        }
+    }
+}
+
+template <typename String> void tst_QHash::hashing_template()
+{
+    // just the hashing function
+    QFETCH(QStringList, items);
+
+    QList<String> realitems;
+    realitems.reserve(items.size());
+    foreach (const QString &s, items)
+        realitems.append(s);
+
+    QBENCHMARK {
+        for (int i = 0, n = realitems.size(); i != n; ++i)
+            (void)qHash(realitems.at(i));
+    }
+}
+
+QTEST_MAIN(tst_QHash)
+
+#include "tst_bench_qhash.moc"