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_Field02 extends JTTTest {
033
034    private static class TestClass {
035        int field = 9;
036    }
037
038    private static boolean cond = true;
039    static final TestClass object = new TestClass();
040
041    public static int test(int arg) {
042        if (arg == 0) {
043            return test1();
044        }
045        if (arg == 1) {
046            return test2();
047        }
048        if (arg == 2) {
049            return test3();
050        }
051        return 0;
052    }
053
054    private static int test1() {
055        TestClass a = object;
056        int c = a.field;
057        if (cond) {
058            return c + a.field;
059        }
060        return 0;
061    }
062
063    private static int test2() {
064        TestClass a = object;
065        if (cond) {
066            TestClass b = object;
067            return a.field + b.field;
068        }
069        return 0;
070    }
071
072    @SuppressWarnings("all")
073    private static int test3() {
074        TestClass a = null;
075        if (cond) {
076            TestClass b = null;
077            return a.field + b.field;
078        }
079        return 0;
080    }
081
082    @Test
083    public void run0() throws Throwable {
084        runTest("test", 0);
085    }
086
087    @Test
088    public void run1() throws Throwable {
089        runTest("test", 1);
090    }
091
092    @Test
093    public void run2() throws Throwable {
094        runTest("test", 2);
095    }
096
097}