LLE_01.java

/*
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 * 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.
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package org.graalvm.compiler.jtt.optimize;

import org.junit.Test;

import org.graalvm.compiler.jtt.JTTTest;

/*
 * Test case for local load elimination. It makes sure that the second field store is not eliminated, because
 * it is recognized that the first store changes the field "field1", so it is no longer guaranteed that it
 * has its default value 0.
 */
public class LLE_01 extends JTTTest {

    private static class TestClass {
        int field1;
    }

    public static int test() {
        TestClass o = new TestClass();
        o.field1 = 1;
        o.field1 = 0;
        return o.field1;
    }

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

}