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_InstanceOf02 extends JTTTest {
033
034    private static boolean cond = true;
035
036    static final Object object = new DummyTestClass();
037
038    public static boolean test(int arg) {
039        if (arg == 0) {
040            return foo1();
041        }
042        if (arg == 1) {
043            return foo2();
044        }
045        if (arg == 2) {
046            return foo3();
047        }
048        // do nothing
049        return false;
050    }
051
052    private static boolean foo1() {
053        boolean a = object instanceof DummyTestClass;
054        if (cond) {
055            boolean b = object instanceof DummyTestClass;
056            return a | b;
057        }
058        return false;
059    }
060
061    private static boolean foo2() {
062        Object obj = new DummyTestClass();
063        boolean a = obj instanceof DummyTestClass;
064        if (cond) {
065            boolean b = obj instanceof DummyTestClass;
066            return a | b;
067        }
068        return false;
069    }
070
071    private static boolean foo3() {
072        boolean a = null instanceof DummyTestClass;
073        if (cond) {
074            boolean b = null instanceof DummyTestClass;
075            return a | b;
076        }
077        return false;
078    }
079
080    @Test
081    public void run0() throws Throwable {
082        runTest("test", 0);
083    }
084
085    @Test
086    public void run1() throws Throwable {
087        runTest("test", 1);
088    }
089
090    @Test
091    public void run2() throws Throwable {
092        runTest("test", 2);
093    }
094
095}