Add benchmark for QChar

The benchmark isn't exhaustive, but tests the functions
that are heavily used by QtDeclarative.

For performance reasons, QtDeclarative has its own
implementation of various QChar functions (in
qdeclarativeutils_p.h). But we want to make the actual
QChar functions as fast, so that QtDeclarative can also
use them.

Change-Id: Ic25f30651224c39f2824380d679b8500739f38c3
Reviewed-on: http://codereview.qt-project.org/4900
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

tests/benchmarks/corelib/tools/qchar/main.cpp

@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtTest/QtTest>
+#include <QChar>
+
+class tst_QChar: public QObject
+{
+    Q_OBJECT
+private slots:
+    void isUpper_data();
+    void isUpper();
+    void isLower_data();
+    void isLower();
+    void isLetter_data();
+    void isLetter();
+    void isDigit_data();
+    void isDigit();
+    void isLetterOrNumber_data();
+    void isLetterOrNumber();
+    void isSpace_data();
+    void isSpace();
+};
+
+void tst_QChar::isUpper_data()
+{
+    QTest::addColumn<QChar>("c");
+
+    QTest::newRow("k") << QChar('k');
+    QTest::newRow("K") << QChar('K');
+    QTest::newRow("5") << QChar('5');
+    QTest::newRow("\\0") << QChar();
+    QTest::newRow("space") << QChar(' ');
+    QTest::newRow("\\u3C20") << QChar(0x3C20);
+}
+
+void tst_QChar::isUpper()
+{
+    QFETCH(QChar, c);
+    QBENCHMARK {
+        c.isUpper();
+    }
+}
+
+void tst_QChar::isLower_data()
+{
+    isUpper_data();
+}
+
+void tst_QChar::isLower()
+{
+    QFETCH(QChar, c);
+    QBENCHMARK {
+        c.isLower();
+    }
+}
+
+void tst_QChar::isLetter_data()
+{
+    isUpper_data();
+}
+
+void tst_QChar::isLetter()
+{
+    QFETCH(QChar, c);
+    QBENCHMARK {
+        c.isLetter();
+    }
+}
+
+void tst_QChar::isDigit_data()
+{
+    isUpper_data();
+}
+
+void tst_QChar::isDigit()
+{
+    QFETCH(QChar, c);
+    QBENCHMARK {
+        c.isDigit();
+    }
+}
+
+void tst_QChar::isLetterOrNumber_data()
+{
+    isUpper_data();
+}
+
+void tst_QChar::isLetterOrNumber()
+{
+    QFETCH(QChar, c);
+    QBENCHMARK {
+        c.isLetterOrNumber();
+    }
+}
+
+void tst_QChar::isSpace_data()
+{
+    isUpper_data();
+}
+
+void tst_QChar::isSpace()
+{
+    QFETCH(QChar, c);
+    QBENCHMARK {
+        c.isSpace();
+    }
+}
+
+QTEST_MAIN(tst_QChar)
+
+#include "main.moc"

tests/benchmarks/corelib/tools/qchar/qchar.pro

@@ -0,0 +1,8 @@
+load(qttest_p4)
+
+# do not run benchmarks by default in 'make check'
+CONFIG -= testcase
+
+TARGET = tst_bench_qchar
+QT -= gui
+SOURCES += main.cpp