TestBarrierAboveProj.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * bug 8281811
 * @summary assert(_base == Tuple) failed: Not a Tuple after JDK-8280799
 * @requires vm.gc.Shenandoah
 * @run main/othervm -XX:+UseShenandoahGC -XX:-BackgroundCompilation -XX:LoopMaxUnroll=1 TestBarrierAboveProj
 */


public class TestBarrierAboveProj {
    private static C objField = new C();
    private static final Object[] arrayField = new Object[1000];
    private static volatile int volatileField;

    public static void main(String[] args) {
        for (int i = 0; i < 20_000; i++) {
            test1();
            test2();
        }
    }

    private static float test1() {
        float v = 1;
        for (int i = 1; i < 1000; i++) {
            if (objField == arrayField[i]) {
                return v;
            }
            v *= 2;
        }
        return v;
    }

    private static float test2() {
        float v = 1;
        volatileField = 0x42;
        for (int i = 1; i < 1000; i++) {
            if (objField == arrayField[i]) {
                return v;
            }
            v *= 2;
        }
        return v;
    }

    private static class C {
        public float floatField;
    }
}