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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java @ 5085:5bdaa08ba96b

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add and enable new PropagateTypeCachePhase, add type system tests
author Lukas Stadler <lukas.stadler@jku.at>
date Wed, 14 Mar 2012 17:59:06 +0100
parents e808627bd16f
children 0ebd9cfdc11f
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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 com.oracle.max.cri.ci.*;
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26 import com.oracle.max.cri.ri.*;
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.graph.iterators.*;
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29 import com.oracle.graal.nodes.spi.*;
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30 import com.oracle.graal.nodes.type.*;
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31
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32 /**
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33 * The {@code ConstantNode} represents a constant such as an integer value,
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34 * long, float, object reference, address, etc.
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35 */
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36 @NodeInfo(shortName = "Const")
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37 public class ConstantNode extends BooleanNode implements LIRLowerable {
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38
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39 @Data public final CiConstant value;
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40
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41 protected ConstantNode(CiConstant value) {
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42 super(StampFactory.forConstant(value));
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43 this.value = value;
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44 }
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45
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46 /**
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47 * Constructs a new ConstantNode representing the specified constant.
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48 * @param value the constant
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49 */
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50 protected ConstantNode(CiConstant value, RiRuntime runtime) {
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51 super(StampFactory.forConstant(value, runtime));
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52 this.value = value;
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53 }
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54
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55 @Override
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56 public void generate(LIRGeneratorTool gen) {
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57 if (gen.canInlineConstant(value) || onlyUsedInFrameState()) {
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58 gen.setResult(this, value);
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59 } else {
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60 gen.setResult(this, gen.emitMove(value));
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61 }
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62 }
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63
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64 private boolean onlyUsedInFrameState() {
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65 return usages().filter(NodePredicates.isNotA(FrameState.class)).isEmpty();
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66 }
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67
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68 public static ConstantNode forCiConstant(CiConstant constant, RiRuntime runtime, Graph graph) {
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69 if (constant.kind == CiKind.Object) {
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70 return graph.unique(new ConstantNode(constant, runtime));
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71 } else {
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72 return graph.unique(new ConstantNode(constant));
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73 }
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74 }
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75
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76 /**
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77 * Returns a node for a double constant.
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78 * @param d the double value for which to create the instruction
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79 * @param graph
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80 * @return a node for a double constant
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81 */
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82 public static ConstantNode forDouble(double d, Graph graph) {
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83 return graph.unique(new ConstantNode(CiConstant.forDouble(d)));
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84 }
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85
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86 /**
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87 * Returns a node for a float constant.
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88 * @param f the float value for which to create the instruction
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89 * @param graph
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90 * @return a node for a float constant
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91 */
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92 public static ConstantNode forFloat(float f, Graph graph) {
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93 return graph.unique(new ConstantNode(CiConstant.forFloat(f)));
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94 }
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95
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96 /**
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97 * Returns a node for an long constant.
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98 * @param i the long value for which to create the instruction
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99 * @param graph
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100 * @return a node for an long constant
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101 */
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102 public static ConstantNode forLong(long i, Graph graph) {
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103 return graph.unique(new ConstantNode(CiConstant.forLong(i)));
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104 }
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105
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106 /**
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107 * Returns a node for an integer constant.
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108 * @param i the integer value for which to create the instruction
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109 * @param graph
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110 * @return a node for an integer constant
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111 */
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112 public static ConstantNode forInt(int i, Graph graph) {
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113 return graph.unique(new ConstantNode(CiConstant.forInt(i)));
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114 }
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115
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116 /**
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117 * Returns a node for a boolean constant.
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118 * @param i the boolean value for which to create the instruction
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119 * @param graph
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120 * @return a node representing the boolean
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121 */
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122 public static ConstantNode forBoolean(boolean i, Graph graph) {
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123 return graph.unique(new ConstantNode(CiConstant.forBoolean(i)));
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124 }
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125
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126 /**
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127 * Returns a node for a byte constant.
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128 * @param i the byte value for which to create the instruction
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129 * @param graph
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130 * @return a node representing the byte
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131 */
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132 public static ConstantNode forByte(byte i, Graph graph) {
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133 return graph.unique(new ConstantNode(CiConstant.forByte(i)));
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134 }
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135
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136 /**
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137 * Returns a node for a char constant.
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138 * @param i the char value for which to create the instruction
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139 * @param graph
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140 * @return a node representing the char
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141 */
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142 public static ConstantNode forChar(char i, Graph graph) {
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143 return graph.unique(new ConstantNode(CiConstant.forChar(i)));
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144 }
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145
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146 /**
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147 * Returns a node for a short constant.
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148 * @param i the short value for which to create the instruction
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149 * @param graph
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150 * @return a node representing the short
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151 */
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152 public static ConstantNode forShort(short i, Graph graph) {
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153 return graph.unique(new ConstantNode(CiConstant.forShort(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 an address (jsr/ret address) constant.
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158 * @param i the address value for which to create the instruction
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159 * @param graph
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160 * @return a node representing the address
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161 */
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162 public static ConstantNode forJsr(int i, Graph graph) {
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163 return graph.unique(new ConstantNode(CiConstant.forJsr(i)));
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164 }
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165
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166 /**
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167 * Returns a node for an object constant.
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168 * @param o the object value for which to create the instruction
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169 * @param graph
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170 * @return a node representing the object
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171 */
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172 public static ConstantNode forObject(Object o, RiRuntime runtime, Graph graph) {
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173 return graph.unique(new ConstantNode(CiConstant.forObject(o), runtime));
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174 }
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175
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176 public static ConstantNode forIntegerKind(CiKind kind, long value, Graph graph) {
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177 switch (kind) {
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178 case Byte:
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179 case Short:
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180 case Int:
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181 return ConstantNode.forInt((int) value, graph);
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182 case Long:
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183 return ConstantNode.forLong(value, graph);
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184 default:
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185 throw new InternalError("Should not reach here");
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186 }
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187 }
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188
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189 public static ConstantNode forFloatingKind(CiKind kind, double value, Graph graph) {
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190 switch (kind) {
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191 case Float:
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192 return ConstantNode.forFloat((float) value, graph);
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193 case Double:
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194 return ConstantNode.forDouble(value, graph);
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195 default:
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196 throw new InternalError("Should not reach here");
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197 }
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198 }
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199
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200 public static ConstantNode defaultForKind(CiKind kind, Graph graph) {
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201 switch(kind) {
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202 case Boolean:
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203 return ConstantNode.forBoolean(false, graph);
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204 case Byte:
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205 case Char:
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206 case Short:
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207 case Int:
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208 return ConstantNode.forInt(0, graph);
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209 case Double:
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210 return ConstantNode.forDouble(0.0, graph);
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211 case Float:
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212 return ConstantNode.forFloat(0.0f, graph);
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213 case Long:
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214 return ConstantNode.forLong(0L, graph);
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215 case Object:
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216 return ConstantNode.forObject(null, null, graph);
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217 default:
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218 return null;
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219 }
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220 }
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221
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222 @Override
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223 public String toString(Verbosity verbosity) {
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224 if (verbosity == Verbosity.Name) {
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diff changeset
225 return super.toString(Verbosity.Name) + "(" + value.kind.format(value.boxedValue()) + ")";
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parents:
diff changeset
226 } else {
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diff changeset
227 return super.toString(verbosity);
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228 }
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229 }
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diff changeset
230
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
231 @Override
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diff changeset
232 public BooleanNode negate() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
233 return ConstantNode.forBoolean(!value.asBoolean(), graph());
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
234 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
235 }