1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 /**
  26  * @test
  27  * @bug 7199742
  28  * @summary A lot of C2 OSR compilations of the same method's bci
  29  *
  30  * @run main/othervm -Xmx32m -Xbatch Test7199742
  31  */
  32 
  33 public class Test7199742 {
  34   private static final int ITERS  = 10000000;
  35   public static void main(String args[]) {
  36     Test7199742 t = new Test7199742();
  37     for (int i=0; i<10; i++) {
  38       test(t, 7);
  39     }
  40   }
  41   static Test7199742 test(Test7199742 t, int m) {
  42     int i = -(ITERS/2);
  43     if (i == 0) return null;
  44     Test7199742 v = null;
  45     while(i < ITERS) {
  46       if ((i&m) == 0) {
  47         v = t;
  48       }
  49       i++;
  50     }
  51     return v;
  52   }
  53 }
  54