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 constant folding of integer operations.
031 */
032public class VN_Field01 extends JTTTest {
033
034    private static class TestClass {
035        int field = 9;
036    }
037
038    static final TestClass object = new TestClass();
039
040    public static int test(int arg) {
041        if (arg == 0) {
042            return test1();
043        }
044        if (arg == 1) {
045            return test2();
046        }
047        if (arg == 2) {
048            return test3();
049        }
050        return 0;
051    }
052
053    private static int test1() {
054        TestClass a = object;
055        return a.field + a.field;
056    }
057
058    private static int test2() {
059        TestClass a = object;
060        TestClass b = object;
061        return a.field + b.field;
062    }
063
064    @SuppressWarnings("all")
065    private static int test3() {
066        TestClass a = null;
067        TestClass b = null;
068        return a.field + b.field;
069    }
070
071    @Test
072    public void run0() throws Throwable {
073        runTest("test", 0);
074    }
075
076    @Test
077    public void run1() throws Throwable {
078        runTest("test", 1);
079    }
080
081    @Test
082    public void run2() throws Throwable {
083        runTest("test", 2);
084    }
085
086}