001/*
002 * Copyright (c) 2011, 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.compiler.test;
024
025import java.io.*;
026import java.util.*;
027
028import org.junit.*;
029
030public class IfReorderTest extends GraalCompilerTest {
031
032    private static Object fieldA = Integer.class;
033    private static Object fieldB = Double.class;
034
035    @Test
036    public void test1() {
037        test("test1Snippet", new ArrayList<>());
038    }
039
040    public static Object test1Snippet(Object o) {
041        /*
042         * Serializable and List are not mutually exclusive, so these two IFs should never be
043         * reordered.
044         */
045        if (branchProbability(0.1, o instanceof Serializable)) {
046            return fieldA;
047        }
048        if (branchProbability(0.9, o instanceof List)) {
049            return fieldB;
050        }
051        return null;
052    }
053
054}