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annotate graal/com.oracle.max.graal.jtt/src/com/oracle/graal/jtt/optimize/VN_InstanceOf01.java @ 5060:4ed4295ce15f

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Update import statements.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 08 Mar 2012 19:11:12 +0100
parents ed559a528128
children
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1 /*
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2 * Copyright (c) 2009, 2012, 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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4ed4295ce15f Update import statements.
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23 package com.oracle.graal.jtt.optimize;
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24
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25 import org.junit.*;
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26
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27 /*
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28 * Tests value numbering of instanceof operations.
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29 */
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30 public class VN_InstanceOf01 {
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31
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32 static final Object object = new VN_InstanceOf01();
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33
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34 public static boolean test(int arg) {
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35 if (arg == 0) {
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36 return foo1();
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37 }
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38 if (arg == 1) {
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39 return foo2();
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40 }
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41 if (arg == 2) {
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42 return foo3();
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43 }
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44 // do nothing
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45 return false;
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46 }
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47
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48 private static boolean foo1() {
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49 boolean a = object instanceof VN_InstanceOf01;
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50 boolean b = object instanceof VN_InstanceOf01;
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51 return a | b;
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52 }
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53
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54 private static boolean foo2() {
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55 Object obj = new VN_InstanceOf01();
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56 boolean a = obj instanceof VN_InstanceOf01;
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57 boolean b = obj instanceof VN_InstanceOf01;
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58 return a | b;
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59 }
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60
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61 private static boolean foo3() {
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62 boolean a = null instanceof VN_InstanceOf01;
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63 boolean b = null instanceof VN_InstanceOf01;
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64 return a | b;
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65 }
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66
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67 @Test
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68 public void run0() throws Throwable {
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69 Assert.assertEquals(true, test(0));
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70 }
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71
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72 @Test
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73 public void run1() throws Throwable {
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74 Assert.assertEquals(true, test(1));
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75 }
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76
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77 @Test
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78 public void run2() throws Throwable {
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79 Assert.assertEquals(false, test(2));
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80 }
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81
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82 }