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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java @ 7816:4e1278443941

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Remove Kind.Jsr.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Mon, 18 Feb 2013 20:55:18 -0800
parents 4a6646d8eb87
children 4b41416685e9
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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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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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e23980f4a890 Cleanup of Kind class: remove isXxx methods
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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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2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
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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 }