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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerAsserts.java @ 16051:da9b9b625818

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Truffle FrameDescriptor: add compiler asserts
author Bernhard Urban <bernhard.urban@jku.at>
date Fri, 06 Jun 2014 09:40:22 +0200
parents 494b818b527c
children 9c4168877444
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1 /*
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2 * Copyright (c) 2013, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api;
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26
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27 /**
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28 * Assertions about the code produced by the Truffle compiler. All operations have no effect when
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29 * either executed in the interpreter or in the compiled code. The assertions are checked during
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30 * code generation and the Truffle compiler produces for failing assertions a stack trace that
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31 * identifies the code position of the assertion in the context of the current compilation.
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32 *
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33 */
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34 public class CompilerAsserts {
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35
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36 /**
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37 * Assertion that this code position should never be reached during compilation. It can be used
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38 * for exceptional code paths or rare code paths that should never be included in a compilation
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39 * unit. See {@link CompilerDirectives#transferToInterpreter()} for the corresponding compiler
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40 * directive.
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41 */
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42 public static void neverPartOfCompilation() {
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43 }
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44
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45 public static void neverPartOfCompilation(@SuppressWarnings("unused") String message) {
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46 }
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47
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48 /**
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49 * Assertion that the corresponding value is reduced to a constant during compilation.
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50 *
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51 * @param value the value that must be constant during compilation
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52 * @return the value given as parameter
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53 */
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54 public static boolean compilationConstant(boolean value) {
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55 return value;
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56 }
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57
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58 /**
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59 * Assertion that the corresponding value is reduced to a constant during compilation.
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60 *
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61 * @param value the value that must be constant during compilation
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62 * @return the value given as parameter
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63 */
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64 public static byte compilationConstant(byte value) {
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65 return value;
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66 }
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67
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68 /**
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69 * Assertion that the corresponding value is reduced to a constant during compilation.
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70 *
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71 * @param value the value that must be constant during compilation
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72 * @return the value given as parameter
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73 */
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74 public static char compilationConstant(char value) {
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75 return value;
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76 }
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77
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78 /**
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79 * Assertion that the corresponding value is reduced to a constant during compilation.
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80 *
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81 * @param value the value that must be constant during compilation
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82 * @return the value given as parameter
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83 */
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84 public static short compilationConstant(short value) {
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85 return value;
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86 }
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87
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88 /**
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89 * Assertion that the corresponding value is reduced to a constant during compilation.
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90 *
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91 * @param value the value that must be constant during compilation
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92 * @return the value given as parameter
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93 */
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94 public static int compilationConstant(int value) {
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95 return value;
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96 }
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97
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98 /**
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99 * Assertion that the corresponding value is reduced to a constant during compilation.
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100 *
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101 * @param value the value that must be constant during compilation
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102 * @return the value given as parameter
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103 */
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104 public static long compilationConstant(long value) {
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105 return value;
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106 }
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107
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108 /**
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109 * Assertion that the corresponding value is reduced to a constant during compilation.
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110 *
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111 * @param value the value that must be constant during compilation
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112 * @return the value given as parameter
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113 */
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114 public static float compilationConstant(float value) {
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115 return value;
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116 }
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117
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118 /**
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119 * Assertion that the corresponding value is reduced to a constant during compilation.
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120 *
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121 * @param value the value that must be constant during compilation
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122 * @return the value given as parameter
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123 */
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124 public static double compilationConstant(double value) {
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125 return value;
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126 }
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127
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128 /**
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129 * Assertion that the corresponding value is reduced to a constant during compilation.
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130 *
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131 * @param value the value that must be constant during compilation
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132 * @return the value given as parameter
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133 */
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134 public static Object compilationConstant(Object value) {
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135 return value;
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136 }
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137 }