001/*
002 * Copyright (c) 2015, 2015, 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.loop;
024
025import org.junit.*;
026
027import com.oracle.graal.api.directives.*;
028import com.oracle.graal.jtt.*;
029
030/*
031 */
032public class LoopPhiResolutionTest extends JTTTest {
033
034    public static int test(int count) {
035        int i1 = 1;
036        int i2 = 2;
037        int i3 = 3;
038        int i4 = 4;
039
040        for (int i = 0; i < count; i++) {
041            i1 = wormhole(i1);
042            i2 = wormhole(i2);
043            i3 = wormhole(i2);
044            i4 = wormhole(i4);
045        }
046        return i1 + i2 * 10 + i3 * 100 + i4 * 1000;
047    }
048
049    private static int wormhole(int x) {
050        return (int) GraalDirectives.opaque((long) x);
051    }
052
053    @Test
054    public void run0() throws Throwable {
055        runTest("test", 0);
056    }
057
058    @Test
059    public void run1() throws Throwable {
060        runTest("test", 1);
061    }
062
063    @Test
064    public void run2() throws Throwable {
065        runTest("test", 10);
066    }
067
068}