hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/ReassociateConstants.java

/*
 * Copyright (c) 2012, 2012, 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.optimize;

import org.junit.Assert;
import org.junit.Test;

public class ReassociateConstants {

    public static int rnd = (int) (Math.random() * 100);

    @Test
    public void run0() throws Throwable {
        Assert.assertEquals(rnd + 3, 1 + (rnd + 2));
        Assert.assertEquals(rnd + 3, (rnd + 2) + 1);
        Assert.assertEquals(rnd + 3, 1 + (2 + rnd));
        Assert.assertEquals(rnd + 3, (2 + rnd) + 1);

        Assert.assertEquals(-1 - rnd, 1 - (rnd + 2));
        Assert.assertEquals(rnd + 1, (rnd + 2) - 1);
        Assert.assertEquals(-1 - rnd, 1 - (2 + rnd));
        Assert.assertEquals(rnd + 1, (2 + rnd) - 1);

        Assert.assertEquals(rnd - 1, 1 + (rnd - 2));
        Assert.assertEquals(rnd - 1, (rnd - 2) + 1);
        Assert.assertEquals(-rnd + 3, 1 + (2 - rnd));
        Assert.assertEquals(-rnd + 3, (2 - rnd) + 1);

        Assert.assertEquals(-rnd + 3, 1 - (rnd - 2));
        Assert.assertEquals(rnd - 3, (rnd - 2) - 1);
        Assert.assertEquals(rnd + -1, 1 - (2 - rnd));
        Assert.assertEquals(-rnd + 1, (2 - rnd) - 1);
    }
}