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annotate graal/com.oracle.max.graal.jtt/src/com/oracle/graal/jtt/optimize/VN_Field01.java @ 5059:ed559a528128

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author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 08 Mar 2012 17:57:30 +0100
parents graal/com.oracle.max.graal.jtt/src/com/oracle/max/graal/jtt/optimize/VN_Field01.java@5b04b33dac74
children 4ed4295ce15f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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23 package com.oracle.max.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 constant folding of integer operations.
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29 */
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30 public class VN_Field01 {
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31
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32 static final VN_Field01 object = new VN_Field01();
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33
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34 int field = 9;
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35
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36 public static int test(int arg) {
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37 if (arg == 0) {
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38 return test1();
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39 }
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40 if (arg == 1) {
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41 return test2();
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42 }
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43 if (arg == 2) {
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44 return test3();
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45 }
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46 return 0;
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47 }
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48
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49 private static int test1() {
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50 VN_Field01 a = object;
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51 return a.field + a.field;
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52 }
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53
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54 private static int test2() {
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55 VN_Field01 a = object;
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56 VN_Field01 b = object;
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57 return a.field + b.field;
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58 }
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59
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60 @SuppressWarnings("all")
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61 private static int test3() {
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62 VN_Field01 a = null;
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63 VN_Field01 b = null;
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64 return a.field + b.field;
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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(18, 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(18, test(1));
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75 }
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76
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77 @Test(expected = java.lang.NullPointerException.class)
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78 public void run2() throws Throwable {
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79 test(2);
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80 }
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81
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82 }