1 /* 2 * Copyright (c) 2010, 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 * @test 26 * @bug 6973329 27 * @summary C2 with Zero based COOP produces code with broken anti-dependency on x86 28 * 29 * @run main/othervm -Xbatch -Xcomp -XX:CompileOnly=Test Test 30 */ 31 32 class A { 33 A next; 34 int n; 35 36 public int get_n() { 37 return n+1; 38 } 39 } 40 public class Test { 41 42 A a; 43 44 void test (A new_next) { 45 A prev_next = a.next; 46 a.next = new_next; 47 if (prev_next == null) { 48 a.n = a.get_n(); 49 } 50 } 51 52 public static void main(String args[]) { 53 Test t = new Test(); 54 t.a = new A(); 55 t.a.n = 1; 56 t.test(new A()); 57 if (t.a.n != 2) { 58 System.out.println("Wrong value: " + t.a.n + " expected: 2"); 59 System.exit(97); 60 } 61 } 62 } 63