Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java @ 7816:4e1278443941
Remove Kind.Jsr.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 18 Feb 2013 20:55:18 -0800 |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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.graal.nodes; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.oracle.graal.api.meta.*; |
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28 import com.oracle.graal.graph.*; |
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29 import com.oracle.graal.graph.iterators.*; |
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30 import com.oracle.graal.nodes.calc.*; |
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31 import com.oracle.graal.nodes.spi.*; |
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32 import com.oracle.graal.nodes.type.*; |
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33 |
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34 /** |
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35 * The {@code ConstantNode} represents a constant such as an integer value, long, float, object |
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36 * reference, address, etc. |
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37 */ |
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38 @NodeInfo(shortName = "Const", nameTemplate = "Const({p#rawvalue})") |
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39 public class ConstantNode extends FloatingNode implements LIRLowerable { |
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40 |
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41 public final Constant value; |
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42 |
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43 protected ConstantNode(Constant value) { |
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44 super(StampFactory.forConstant(value)); |
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45 this.value = value; |
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46 } |
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47 |
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48 /** |
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49 * Constructs a new ConstantNode representing the specified constant. |
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50 * |
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51 * @param value the constant |
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52 */ |
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53 protected ConstantNode(Constant value, MetaAccessProvider runtime) { |
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54 super(StampFactory.forConstant(value, runtime)); |
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55 this.value = value; |
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56 } |
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57 |
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58 @Override |
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59 public void generate(LIRGeneratorTool gen) { |
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60 if (gen.canInlineConstant(value) || onlyUsedInFrameState()) { |
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61 gen.setResult(this, value); |
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62 } else { |
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63 gen.setResult(this, gen.emitMove(value)); |
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64 } |
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65 } |
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66 |
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67 private boolean onlyUsedInFrameState() { |
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68 return usages().filter(NodePredicates.isNotA(FrameState.class)).isEmpty(); |
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69 } |
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70 |
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71 public static ConstantNode forConstant(Constant constant, MetaAccessProvider runtime, Graph graph) { |
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72 if (constant.getKind() == Kind.Object) { |
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73 return graph.unique(new ConstantNode(constant, runtime)); |
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74 } else { |
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75 return graph.unique(new ConstantNode(constant)); |
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76 } |
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77 } |
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78 |
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79 /** |
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80 * Returns a node for a double constant. |
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81 * |
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82 * @param d the double value for which to create the instruction |
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83 * @param graph |
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84 * @return a node for a double constant |
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85 */ |
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86 public static ConstantNode forDouble(double d, Graph graph) { |
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87 return graph.unique(new ConstantNode(Constant.forDouble(d))); |
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88 } |
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89 |
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90 /** |
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91 * Returns a node for a float constant. |
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92 * |
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93 * @param f the float value for which to create the instruction |
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94 * @param graph |
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95 * @return a node for a float constant |
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96 */ |
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97 public static ConstantNode forFloat(float f, Graph graph) { |
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98 return graph.unique(new ConstantNode(Constant.forFloat(f))); |
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99 } |
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100 |
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101 /** |
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102 * Returns a node for an long constant. |
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103 * |
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104 * @param i the long value for which to create the instruction |
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105 * @param graph |
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106 * @return a node for an long constant |
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107 */ |
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108 public static ConstantNode forLong(long i, Graph graph) { |
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109 return graph.unique(new ConstantNode(Constant.forLong(i))); |
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110 } |
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111 |
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112 /** |
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113 * Returns a node for an integer constant. |
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114 * |
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115 * @param i the integer value for which to create the instruction |
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116 * @param graph |
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117 * @return a node for an integer constant |
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118 */ |
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119 public static ConstantNode forInt(int i, Graph graph) { |
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120 return graph.unique(new ConstantNode(Constant.forInt(i))); |
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121 } |
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122 |
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123 /** |
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124 * Returns a node for a boolean constant. |
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125 * |
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126 * @param i the boolean value for which to create the instruction |
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127 * @param graph |
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128 * @return a node representing the boolean |
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129 */ |
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130 public static ConstantNode forBoolean(boolean i, Graph graph) { |
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131 return graph.unique(new ConstantNode(Constant.forBoolean(i))); |
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132 } |
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133 |
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134 /** |
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135 * Returns a node for a byte constant. |
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136 * |
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137 * @param i the byte value for which to create the instruction |
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138 * @param graph |
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139 * @return a node representing the byte |
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140 */ |
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141 public static ConstantNode forByte(byte i, Graph graph) { |
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142 return graph.unique(new ConstantNode(Constant.forByte(i))); |
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143 } |
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144 |
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145 /** |
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146 * Returns a node for a char constant. |
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147 * |
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148 * @param i the char value for which to create the instruction |
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149 * @param graph |
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150 * @return a node representing the char |
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151 */ |
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152 public static ConstantNode forChar(char i, Graph graph) { |
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153 return graph.unique(new ConstantNode(Constant.forChar(i))); |
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154 } |
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155 |
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156 /** |
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157 * Returns a node for a short constant. |
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158 * |
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159 * @param i the short value for which to create the instruction |
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160 * @param graph |
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161 * @return a node representing the short |
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162 */ |
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163 public static ConstantNode forShort(short i, Graph graph) { |
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164 return graph.unique(new ConstantNode(Constant.forShort(i))); |
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165 } |
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166 |
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167 /** |
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168 * Returns a node for an object constant. |
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169 * |
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170 * @param o the object value for which to create the instruction |
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171 * @param graph |
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172 * @return a node representing the object |
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173 */ |
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174 public static ConstantNode forObject(Object o, MetaAccessProvider runtime, Graph graph) { |
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175 assert !(o instanceof Constant) : "wrapping a Constant into a Constant"; |
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176 return graph.unique(new ConstantNode(Constant.forObject(o), runtime)); |
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177 } |
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178 |
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179 public static ConstantNode forIntegerKind(Kind kind, long value, Graph graph) { |
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180 switch (kind) { |
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181 case Byte: |
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182 case Short: |
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183 case Int: |
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184 return ConstantNode.forInt((int) value, graph); |
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185 case Long: |
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186 return ConstantNode.forLong(value, graph); |
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187 default: |
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188 throw new InternalError("Should not reach here"); |
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189 } |
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190 } |
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191 |
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192 public static ConstantNode forFloatingKind(Kind kind, double value, Graph graph) { |
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193 switch (kind) { |
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194 case Float: |
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195 return ConstantNode.forFloat((float) value, graph); |
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196 case Double: |
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197 return ConstantNode.forDouble(value, graph); |
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198 default: |
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199 throw new InternalError("Should not reach here"); |
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200 } |
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201 } |
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202 |
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203 public static ConstantNode defaultForKind(Kind kind, Graph graph) { |
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204 switch (kind) { |
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205 case Boolean: |
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206 return ConstantNode.forBoolean(false, graph); |
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207 case Byte: |
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208 case Char: |
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209 case Short: |
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210 case Int: |
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211 return ConstantNode.forInt(0, graph); |
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212 case Double: |
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213 return ConstantNode.forDouble(0.0, graph); |
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214 case Float: |
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215 return ConstantNode.forFloat(0.0f, graph); |
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216 case Long: |
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217 return ConstantNode.forLong(0L, graph); |
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218 case Object: |
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219 return ConstantNode.forObject(null, null, graph); |
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220 default: |
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221 return null; |
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222 } |
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223 } |
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224 |
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225 @Override |
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226 public Map<Object, Object> getDebugProperties(Map<Object, Object> map) { |
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227 Map<Object, Object> properties = super.getDebugProperties(map); |
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228 properties.put("rawvalue", value.getKind() == Kind.Object ? value.getKind().format(value.asBoxedValue()) : value.asBoxedValue()); |
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229 return properties; |
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230 } |
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231 |
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232 @Override |
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233 public String toString(Verbosity verbosity) { |
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234 if (verbosity == Verbosity.Name) { |
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235 return super.toString(Verbosity.Name) + "(" + value.getKind().format(value.asBoxedValue()) + ")"; |
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236 } else { |
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237 return super.toString(verbosity); |
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238 } |
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239 } |
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240 } |