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