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annotate test/compiler/6973329/Test.java @ 3237:399aa66d375e

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Fixed a bug in which the valueEquals method was misused. The method does only check the equality of the node data and not full GVN equality by taking inputs and successors into account.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Jul 2011 14:16:38 -0700
parents 6c9cc03d8726
children
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1 /*
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2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /**
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25 * @test
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26 * @bug 6973329
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27 * @summary C2 with Zero based COOP produces code with broken anti-dependency on x86
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28 *
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29 * @run main/othervm -Xbatch -Xcomp -XX:CompileOnly=Test Test
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30 */
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31
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32 class A {
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33 A next;
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34 int n;
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35
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36 public int get_n() {
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37 return n+1;
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38 }
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39 }
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40 public class Test {
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41
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42 A a;
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43
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44 void test (A new_next) {
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45 A prev_next = a.next;
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46 a.next = new_next;
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47 if (prev_next == null) {
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48 a.n = a.get_n();
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49 }
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50 }
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51
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52 public static void main(String args[]) {
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53 Test t = new Test();
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54 t.a = new A();
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55 t.a.n = 1;
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56 t.test(new A());
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57 if (t.a.n != 2) {
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58 System.out.println("Wrong value: " + t.a.n + " expected: 2");
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59 System.exit(97);
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60 }
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61 }
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62 }
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