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 compiler.c2.Test7199742
  31  */
  32 
  33 package compiler.c2;
  34 
  35 public class Test7199742 {
  36     private static final int ITERS = 10000000;
  37 
  38     public static void main(String args[]) {
  39         Test7199742 t = new Test7199742();
  40         for (int i = 0; i < 10; i++) {
  41             test(t, 7);
  42         }
  43     }
  44 
  45     static Test7199742 test(Test7199742 t, int m) {
  46         int i = -(ITERS / 2);
  47         if (i == 0) return null;
  48         Test7199742 v = null;
  49         while (i < ITERS) {
  50             if ((i & m) == 0) {
  51                 v = t;
  52             }
  53             i++;
  54         }
  55         return v;
  56     }
  57 }
  58