TestEliminatedArrayCopyPhi.java

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/*
 * @test
 * @bug 8134321
 * @summary Code that capture field values of eliminated allocation at a safepoint when there's an arraycopy behind a Phi is broken
 *
 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
 *                   compiler.arraycopy.TestEliminatedArrayCopyPhi
 */

package compiler.arraycopy;

public class TestEliminatedArrayCopyPhi {

    static int[] escaped;

    static void test(int[] src, boolean flag1, boolean flag2) {
        int[] array = new int[10];
        if (flag1) {
            System.arraycopy(src, 0, array, 0, src.length);
        } else {
        }

        if (flag2) {
            // never taken
            escaped = array;
        }
    }

    public static void main(String[] args) {
        int[] src = new int[10];
        for (int i = 0; i < 20000; i++) {
            test(src, (i % 2) == 0, false);
        }
    }
}