001/*
002 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.jtt.optimize;
024
025import org.junit.*;
026
027import com.oracle.graal.jtt.*;
028
029/*
030 * Tests value numbering of instanceof operations.
031 */
032public class VN_InstanceOf01 extends JTTTest {
033
034    static final Object object = new DummyTestClass();
035
036    public static boolean test(int arg) {
037        if (arg == 0) {
038            return foo1();
039        }
040        if (arg == 1) {
041            return foo2();
042        }
043        if (arg == 2) {
044            return foo3();
045        }
046        // do nothing
047        return false;
048    }
049
050    private static boolean foo1() {
051        boolean a = object instanceof DummyTestClass;
052        boolean b = object instanceof DummyTestClass;
053        return a | b;
054    }
055
056    private static boolean foo2() {
057        Object obj = new DummyTestClass();
058        boolean a = obj instanceof DummyTestClass;
059        boolean b = obj instanceof DummyTestClass;
060        return a | b;
061    }
062
063    private static boolean foo3() {
064        boolean a = null instanceof DummyTestClass;
065        boolean b = null instanceof DummyTestClass;
066        return a | b;
067    }
068
069    @Test
070    public void run0() throws Throwable {
071        runTest("test", 0);
072    }
073
074    @Test
075    public void run1() throws Throwable {
076        runTest("test", 1);
077    }
078
079    @Test
080    public void run2() throws Throwable {
081        runTest("test", 2);
082    }
083
084}