jdk/test/hotspot/jtreg/compiler/arraycopy/TestDeadCloneMem.java

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/**
 * @test
 * @bug JDK-8387015
 * @summary C2: crash with "named projection 2 not found" from ArrayCopyNode::finish_transform() for clone
 * @run main/othervm -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:CompileOnly=${test.main.class}::test1
 *                   -XX:CompileCommand=dontinline,${test.main.class}::notInlined -XX:+StressIGVN
 *                   -XX:StressSeed=1324432947 ${test.main.class}
 * @run main/othervm -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:CompileOnly=${test.main.class}::test1
 *                   -XX:CompileCommand=dontinline,${test.main.class}::notInlined -XX:+StressIGVN
 *                   ${test.main.class}
 */

package compiler.arraycopy;

public class TestDeadCloneMem {
    private static int field;

    public static void main(String[] args) {
        int[] array = new int[10];
        array.clone();
        Object o = new Object();
        test1(42, false);
    }

    private static int test1(int flag, boolean flag2) {
        int len;
        if (flag != 42) {
            if (flag2) {
                field = 42;
            }
            int[] array2;
            if (flag != 42) {
                len = -1;
                array2 = new int[4];
            } else {
                len = 42;
                array2 = new int[100];
            }
            int[] array = new int[len];
            int length = array.length;
            int i = 0;
            do {
                synchronized (new Object()) {}
                notInlined();
                array2.clone();
                i++;
            } while (i < 10);
            return length;
        }
        return 0;
    }

    private static void notInlined() {

    }
}