aoqi@0: /*
aoqi@0:  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 6973329
aoqi@0:  * @summary C2 with Zero based COOP produces code with broken anti-dependency on x86
aoqi@0:  *
aoqi@0:  * @run main/othervm -Xbatch -Xcomp -XX:CompileOnly=Test Test
aoqi@0:  */
aoqi@0: 
aoqi@0: class A {
aoqi@0:   A next;
aoqi@0:   int n;
aoqi@0: 
aoqi@0:   public int get_n() {
aoqi@0:     return n+1;
aoqi@0:   }
aoqi@0: }
aoqi@0: public class Test {
aoqi@0: 
aoqi@0:   A a;
aoqi@0: 
aoqi@0:   void test (A new_next) {
aoqi@0:     A prev_next = a.next;
aoqi@0:     a.next = new_next;
aoqi@0:     if (prev_next == null) {
aoqi@0:       a.n = a.get_n();
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   public static void main(String args[]) {
aoqi@0:     Test t = new Test();
aoqi@0:     t.a = new A();
aoqi@0:     t.a.n = 1;
aoqi@0:     t.test(new A());
aoqi@0:     if (t.a.n != 2) {
aoqi@0:       System.out.println("Wrong value: " + t.a.n + " expected: 2");
aoqi@0:       System.exit(97);
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: