TestCountedLoopSafepointBackedge.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * under the terms of the GNU General Public License version 2 only, as
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 *
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 * 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).
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 * 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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/**
 * @test
 * @bug 8161147
 * @requires vm.flavor == "server"
 * @summary Safepoint on backedge breaks UseCountedLoopSafepoints
 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:+UseCountedLoopSafepoints TestCountedLoopSafepointBackedge
 *
 */

public class TestCountedLoopSafepointBackedge {
    static void test(int[] arr, int inc) {
        int i = 0;
        for (;;) {
            for (int j = 0; j < 10; j++);
            arr[i] = i;
            i++;
            if (i >= 100) {
                break;
            }
            for (int j = 0; j < 10; j++);
        }
    }

    static public void main(String[] args) {
        int[] arr = new int[100];
        for (int i = 0; i < 20000; i++) {
             test(arr, 1);
        }
    }
}