Mercurial > hg > graal-compiler

annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MethodCallTargetNode.java @ 16174:5605c5e37a1e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
use InvokeKind.Special for array methods
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Mon, 23 Jun 2014 18:02:29 -0700
parents f62cc9f09c7b
children 10c12d09a8d2 4bfe1359d98a
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1 /*
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2 * Copyright (c) 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.java;
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24
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.compiler.common.type.*;
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.graph.spi.*;
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29 import com.oracle.graal.nodes.*;
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30 import com.oracle.graal.nodes.type.*;
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31
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32 public class MethodCallTargetNode extends CallTargetNode implements IterableNodeType, Canonicalizable {
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33
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34 public enum InvokeKind {
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35 Interface,
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36 Special,
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37 Static,
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38 Virtual
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39 }
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40
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41 private final JavaType returnType;
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42 private ResolvedJavaMethod targetMethod;
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43 private InvokeKind invokeKind;
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44
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45 /**
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46 * @param arguments
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47 */
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48 public MethodCallTargetNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ValueNode[] arguments, JavaType returnType) {
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49 super(arguments);
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50 this.invokeKind = invokeKind;
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51 this.returnType = returnType;
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52 this.targetMethod = targetMethod;
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53 }
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54
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55 /**
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56 * Gets the target method for this invocation instruction.
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57 *
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58 * @return the target method
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59 */
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60 public ResolvedJavaMethod targetMethod() {
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61 return targetMethod;
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62 }
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63
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64 public InvokeKind invokeKind() {
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65 return invokeKind;
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66 }
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67
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68 public void setInvokeKind(InvokeKind kind) {
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69 this.invokeKind = kind;
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70 }
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71
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72 public void setTargetMethod(ResolvedJavaMethod method) {
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73 targetMethod = method;
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74 }
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75
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76 /**
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77 * Gets the instruction that produces the receiver object for this invocation, if any.
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78 *
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79 * @return the instruction that produces the receiver object for this invocation if any,
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80 * {@code null} if this invocation does not take a receiver object
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81 */
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82 public ValueNode receiver() {
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83 return isStatic() ? null : arguments().get(0);
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84 }
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85
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86 /**
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87 * Checks whether this is an invocation of a static method.
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88 *
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89 * @return {@code true} if the invocation is a static invocation
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90 */
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91 public boolean isStatic() {
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92 return invokeKind() == InvokeKind.Static;
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93 }
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94
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95 public Kind returnKind() {
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96 return targetMethod().getSignature().getReturnKind();
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97 }
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98
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99 public Invoke invoke() {
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100 return (Invoke) this.usages().first();
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101 }
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102
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103 @Override
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104 public boolean verify() {
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105 assert usages().count() <= 1 : "call target may only be used by a single invoke";
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106 for (Node n : usages()) {
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107 assertTrue(n instanceof Invoke, "call target can only be used from an invoke (%s)", n);
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108 }
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109 if (invokeKind == InvokeKind.Special || invokeKind == InvokeKind.Static) {
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110 assertFalse(targetMethod.isAbstract(), "special calls or static calls are only allowed for concrete methods (%s)", targetMethod);
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111 }
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112 if (invokeKind == InvokeKind.Static) {
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113 assertTrue(targetMethod.isStatic(), "static calls are only allowed for static methods (%s)", targetMethod);
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114 } else {
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115 assertFalse(targetMethod.isStatic(), "static calls are only allowed for non-static methods (%s)", targetMethod);
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116 }
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117 return super.verify();
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118 }
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119
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120 @Override
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121 public String toString(Verbosity verbosity) {
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122 if (verbosity == Verbosity.Long) {
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123 return super.toString(Verbosity.Short) + "(" + targetMethod() + ")";
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124 } else {
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125 return super.toString(verbosity);
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126 }
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127 }
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128
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129 @Override
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130 public Node canonical(CanonicalizerTool tool) {
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131 if (invokeKind == InvokeKind.Interface || invokeKind == InvokeKind.Virtual) {
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132 // attempt to devirtualize the call
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133
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134 // check for trivial cases (e.g. final methods, nonvirtual methods)
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135 if (targetMethod.canBeStaticallyBound()) {
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136 invokeKind = InvokeKind.Special;
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137 return this;
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138 }
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139
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140 // check if the type of the receiver can narrow the result
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141 ValueNode receiver = receiver();
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142 ResolvedJavaType type = StampTool.typeOrNull(receiver);
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143 if (type != null && (invoke().stateAfter() != null || invoke().stateDuring() != null)) {
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144 /*
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145 * either the holder class is exact, or the receiver object has an exact type, or
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146 * it's an array type
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147 */
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148 ResolvedJavaMethod resolvedMethod = type.resolveMethod(targetMethod, invoke().getContextType());
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149 if (resolvedMethod != null && (resolvedMethod.canBeStaticallyBound() || StampTool.isExactType(receiver) || type.isArray())) {
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150 invokeKind = InvokeKind.Special;
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151 targetMethod = resolvedMethod;
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152 return this;
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153 }
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154 if (tool.assumptions() != null && tool.assumptions().useOptimisticAssumptions()) {
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155 ResolvedJavaType uniqueConcreteType = type.findUniqueConcreteSubtype();
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156 if (uniqueConcreteType != null) {
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157 ResolvedJavaMethod methodFromUniqueType = uniqueConcreteType.resolveMethod(targetMethod, invoke().getContextType());
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158 if (methodFromUniqueType != null) {
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159 tool.assumptions().recordConcreteSubtype(type, uniqueConcreteType);
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160 invokeKind = InvokeKind.Special;
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161 targetMethod = methodFromUniqueType;
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162 return this;
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163 }
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164 }
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165
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166 ResolvedJavaMethod uniqueConcreteMethod = type.findUniqueConcreteMethod(targetMethod);
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167 if (uniqueConcreteMethod != null) {
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parents: 15722
diff changeset
168 tool.assumptions().recordConcreteMethod(targetMethod, type, uniqueConcreteMethod);
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169 invokeKind = InvokeKind.Special;
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170 targetMethod = uniqueConcreteMethod;
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171 return this;
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diff changeset
172 }
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173 }
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174 }
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parents:
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175 }
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parents:
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176 return this;
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177 }
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178
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179 @Override
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180 public Stamp returnStamp() {
6539
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.
Christian Wimmer <christian.wimmer@oracle.com>
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diff changeset
181 Kind returnKind = targetMethod.getSignature().getReturnKind();
5541
b4c406861c33 More renamings to drop Ri* prefix completely. Deleted graph.BitMap class and replaced with java.util.BitSet.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
182 if (returnKind == Kind.Object && returnType instanceof ResolvedJavaType) {
b4c406861c33 More renamings to drop Ri* prefix completely. Deleted graph.BitMap class and replaced with java.util.BitSet.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
183 return StampFactory.declared((ResolvedJavaType) returnType);
5283
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Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
184 } else {
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diff changeset
185 return StampFactory.forKind(returnKind);
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186 }
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187 }
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parents: 5541
diff changeset
188
7684
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parents: 7310
diff changeset
189 public JavaType returnType() {
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190 return returnType;
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191 }
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parents: 7310
diff changeset
192
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diff changeset
193 @Override
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diff changeset
194 public String targetName() {
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diff changeset
195 if (targetMethod() == null) {
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diff changeset
196 return "??Invalid!";
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parents: 5541
diff changeset
197 }
14019
9d864856336a support canonicalization of arraylength in ReadNode
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 11881
diff changeset
198 return MetaUtil.format("%h.%n", targetMethod());
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diff changeset
199 }
7310
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
200
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
201 public static MethodCallTargetNode find(StructuredGraph graph, ResolvedJavaMethod method) {
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
202 for (MethodCallTargetNode target : graph.getNodes(MethodCallTargetNode.class)) {
14158
fd7fcd2d2072 replaced == with .equals() for comparisons between JavaMethod/JavaField/JavaType values
Doug Simon <doug.simon@oracle.com>
parents: 14019
diff changeset
203 if (target.targetMethod.equals(method)) {
7310
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
204 return target;
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
205 }
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
206 }
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
207 return null;
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
208 }
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
209 }