/*
 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */


package org.graalvm.compiler.jtt.loop;

import org.junit.Test;

import org.graalvm.compiler.api.directives.GraalDirectives;
import org.graalvm.compiler.jtt.JTTTest;

/*
 */
public class LoopPhiResolutionTest extends JTTTest {

    public static int test(int count) {
        int i1 = 1;
        int i2 = 2;
        int i3 = 3;
        int i4 = 4;

        for (int i = 0; i < count; i++) {
            i1 = wormhole(i1);
            i2 = wormhole(i2);
            i3 = wormhole(i2);
            i4 = wormhole(i4);
        }
        return i1 + i2 * 10 + i3 * 100 + i4 * 1000;
    }

    private static int wormhole(int x) {
        return (int) GraalDirectives.opaque((long) x);
    }

    @Test
    public void run0() throws Throwable {
        runTest("test", 0);
    }

    @Test
    public void run1() throws Throwable {
        runTest("test", 1);
    }

    @Test
    public void run2() throws Throwable {
        runTest("test", 10);
    }

}
