jdk/test/hotspot/jtreg/compiler/loopopts/TestCreateExSunkOutOfLoop.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/**
 * @test
 * @bug 8373508
 * @summary C2: sinking CreateEx out of loop breaks the graph
 * @library /test/lib
 * @run main/othervm -Xbatch ${test.main.class}
 * @run main ${test.main.class}
 */

package compiler.loopopts;

import jdk.test.lib.Utils;

public class TestCreateExSunkOutOfLoop {
    volatile boolean _mutatorToggle;

    boolean _mutatorFlip() {
        _mutatorToggle = !_mutatorToggle;
        return _mutatorToggle;
    }

    void test() {
        int idx = -845;
        for (;;) {
            try {
                try {
                    for (Object temp = new byte[idx];;) {;}
                } finally {
                    boolean flag = _mutatorFlip();
                    _mutatorFlip();
                    for (;;) {
                        if (flag) {
                            break;
                        }
                    }
                }
            } catch (Throwable $) {;}
        }
    }

    public static void main(String[] strArr) throws InterruptedException {
        Thread thread = new Thread(() -> {
            TestCreateExSunkOutOfLoop t = new TestCreateExSunkOutOfLoop();
            t.test();
        });
        thread.setDaemon(true);
        thread.start();
        Thread.sleep(Utils.adjustTimeout(4000));
    }
}