824
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1 /*
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2 * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any 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 5057225
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27 * @summary Remove useless I2L conversions
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28 *
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29 * @run main/othervm -Xcomp -XX:CompileOnly=Test5057225.doload Test5057225
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30 */
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31
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32 import java.net.URLClassLoader;
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33
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34 public class Test5057225 {
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35 static byte[] ba = new byte[] { -1 };
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36 static short[] sa = new short[] { -1 };
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37 static int[] ia = new int[] { -1 };
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38
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39 static final long[] BYTE_MASKS = {
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40 0x0FL,
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41 0x7FL, // 7-bit
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42 0xFFL,
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43 };
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44
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45 static final long[] SHORT_MASKS = {
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46 0x000FL,
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47 0x007FL, // 7-bit
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48 0x00FFL,
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49 0x0FFFL,
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50 0x3FFFL, // 14-bit
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51 0x7FFFL, // 15-bit
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52 0xFFFFL,
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53 };
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54
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55 static final long[] INT_MASKS = {
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56 0x0000000FL,
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57 0x0000007FL, // 7-bit
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58 0x000000FFL,
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59 0x00000FFFL,
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60 0x00003FFFL, // 14-bit
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61 0x00007FFFL, // 15-bit
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62 0x0000FFFFL,
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63 0x00FFFFFFL,
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64 0x7FFFFFFFL, // 31-bit
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65 0xFFFFFFFFL,
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66 };
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67
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68 public static void main(String[] args) throws Exception {
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69 for (int i = 0; i < BYTE_MASKS.length; i++) {
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70 System.setProperty("value", "" + BYTE_MASKS[i]);
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71 loadAndRunClass("Test5057225$loadUB2L");
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72 }
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73
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74 for (int i = 0; i < SHORT_MASKS.length; i++) {
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75 System.setProperty("value", "" + SHORT_MASKS[i]);
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76 loadAndRunClass("Test5057225$loadUS2L");
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77 }
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78
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79 for (int i = 0; i < INT_MASKS.length; i++) {
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80 System.setProperty("value", "" + INT_MASKS[i]);
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81 loadAndRunClass("Test5057225$loadUI2L");
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82 }
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83 }
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84
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85 static void check(long result, long expected) {
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86 if (result != expected)
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87 throw new InternalError(result + " != " + expected);
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88 }
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89
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90 static void loadAndRunClass(String classname) throws Exception {
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91 Class cl = Class.forName(classname);
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92 URLClassLoader apploader = (URLClassLoader) cl.getClassLoader();
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93 ClassLoader loader = new URLClassLoader(apploader.getURLs(), apploader.getParent());
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94 Class c = loader.loadClass(classname);
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95 Runnable r = (Runnable) c.newInstance();
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96 r.run();
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97 }
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98
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99 public static class loadUB2L implements Runnable {
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100 static final long MASK;
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101 static {
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102 long value = 0;
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103 try {
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104 value = Long.decode(System.getProperty("value"));
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105 } catch (Throwable e) {}
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106 MASK = value;
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107 }
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108
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109 public void run() { check(doload(ba), MASK); }
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110 static long doload(byte[] ba) { return ba[0] & MASK; }
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111 }
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112
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113 public static class loadUS2L implements Runnable {
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114 static final long MASK;
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115 static {
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116 long value = 0;
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117 try {
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118 value = Long.decode(System.getProperty("value"));
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119 } catch (Throwable e) {}
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120 MASK = value;
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121 }
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122
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123 public void run() { check(doload(sa), MASK); }
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124 static long doload(short[] sa) { return sa[0] & MASK; }
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125 }
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126
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127 public static class loadUI2L implements Runnable {
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128 static final long MASK;
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129 static {
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130 long value = 0;
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131 try {
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132 value = Long.decode(System.getProperty("value"));
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133 } catch (Throwable e) {}
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134 MASK = value;
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135 }
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136
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137 public void run() { check(doload(ia), MASK); }
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138 static long doload(int[] ia) { return ia[0] & MASK; }
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139 }
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140 }
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