Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MethodCallTargetNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | 480bd3b1adcd |
children | 0b05bd821399 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 2014, 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.nodeinfo.*; |
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30 import com.oracle.graal.nodes.*; |
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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 @NodeInfo |
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35 public class MethodCallTargetNode extends CallTargetNode implements IterableNodeType, Simplifiable { |
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36 protected final JavaType returnType; |
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37 |
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38 public MethodCallTargetNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ValueNode[] arguments, JavaType returnType) { |
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39 super(arguments, targetMethod, invokeKind); |
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40 this.returnType = returnType; |
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41 } |
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42 |
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43 /** |
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44 * Gets the instruction that produces the receiver object for this invocation, if any. |
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45 * |
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46 * @return the instruction that produces the receiver object for this invocation if any, |
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47 * {@code null} if this invocation does not take a receiver object |
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48 */ |
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49 public ValueNode receiver() { |
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50 return isStatic() ? null : arguments().get(0); |
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51 } |
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52 |
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53 /** |
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54 * Checks whether this is an invocation of a static method. |
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55 * |
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56 * @return {@code true} if the invocation is a static invocation |
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57 */ |
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58 public boolean isStatic() { |
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59 return invokeKind() == InvokeKind.Static; |
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60 } |
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61 |
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62 public Kind returnKind() { |
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63 return targetMethod().getSignature().getReturnKind(); |
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64 } |
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65 |
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66 public Invoke invoke() { |
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67 return (Invoke) this.usages().first(); |
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68 } |
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69 |
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70 @Override |
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71 public boolean verify() { |
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72 assert getUsageCount() <= 1 : "call target may only be used by a single invoke"; |
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73 for (Node n : usages()) { |
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74 assertTrue(n instanceof Invoke, "call target can only be used from an invoke (%s)", n); |
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75 } |
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76 if (invokeKind().isDirect()) { |
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77 assertTrue(targetMethod().isConcrete(), "special calls or static calls are only allowed for concrete methods (%s)", targetMethod()); |
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78 } |
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79 if (invokeKind() == InvokeKind.Static) { |
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80 assertTrue(targetMethod().isStatic(), "static calls are only allowed for static methods (%s)", targetMethod()); |
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81 } else { |
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82 assertFalse(targetMethod().isStatic(), "static calls are only allowed for non-static methods (%s)", targetMethod()); |
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83 } |
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84 return super.verify(); |
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85 } |
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86 |
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87 @Override |
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88 public String toString(Verbosity verbosity) { |
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89 if (verbosity == Verbosity.Long) { |
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90 return super.toString(Verbosity.Short) + "(" + targetMethod() + ")"; |
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91 } else { |
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92 return super.toString(verbosity); |
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93 } |
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94 } |
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95 |
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96 @Override |
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97 public void simplify(SimplifierTool tool) { |
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98 if (invokeKind().isIndirect()) { |
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99 // attempt to devirtualize the call |
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100 |
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101 // check for trivial cases (e.g. final methods, nonvirtual methods) |
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102 if (targetMethod().canBeStaticallyBound()) { |
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103 setInvokeKind(InvokeKind.Special); |
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104 return; |
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105 } |
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106 |
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107 // check if the type of the receiver can narrow the result |
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108 ValueNode receiver = receiver(); |
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109 ResolvedJavaType type = StampTool.typeOrNull(receiver); |
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110 if (type == null && invokeKind == InvokeKind.Virtual) { |
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111 // For virtual calls, we are guaranteed to receive a correct receiver type. |
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112 type = targetMethod.getDeclaringClass(); |
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113 } |
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114 if (type != null && (invoke().stateAfter() != null || invoke().stateDuring() != null)) { |
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115 /* |
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116 * either the holder class is exact, or the receiver object has an exact type, or |
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117 * it's an array type |
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118 */ |
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119 ResolvedJavaMethod resolvedMethod = type.resolveConcreteMethod(targetMethod(), invoke().getContextType()); |
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120 if (resolvedMethod != null && (resolvedMethod.canBeStaticallyBound() || StampTool.isExactType(receiver) || type.isArray())) { |
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121 setInvokeKind(InvokeKind.Special); |
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122 setTargetMethod(resolvedMethod); |
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123 return; |
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124 } |
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125 if (tool.assumptions() != null && tool.assumptions().useOptimisticAssumptions()) { |
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126 ResolvedJavaType uniqueConcreteType = type.findUniqueConcreteSubtype(); |
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127 if (uniqueConcreteType != null) { |
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128 ResolvedJavaMethod methodFromUniqueType = uniqueConcreteType.resolveConcreteMethod(targetMethod(), invoke().getContextType()); |
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129 if (methodFromUniqueType != null) { |
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130 tool.assumptions().recordConcreteSubtype(type, uniqueConcreteType); |
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131 setInvokeKind(InvokeKind.Special); |
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132 setTargetMethod(methodFromUniqueType); |
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133 return; |
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134 } |
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135 } |
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136 |
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137 ResolvedJavaMethod uniqueConcreteMethod = type.findUniqueConcreteMethod(targetMethod()); |
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138 if (uniqueConcreteMethod != null) { |
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139 tool.assumptions().recordConcreteMethod(targetMethod(), type, uniqueConcreteMethod); |
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140 setInvokeKind(InvokeKind.Special); |
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141 setTargetMethod(uniqueConcreteMethod); |
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142 return; |
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143 } |
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144 } |
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145 } |
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146 // try to turn a interface call into a virtual call |
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147 ResolvedJavaType declaredReceiverType = targetMethod().getDeclaringClass(); |
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148 /* |
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149 * We need to check the invoke kind to avoid recursive simplification for virtual |
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150 * interface methods calls. |
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151 */ |
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152 if (declaredReceiverType.isInterface() && !invokeKind().equals(InvokeKind.Virtual)) { |
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153 tryCheckCastSingleImplementor(receiver, declaredReceiverType); |
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154 } |
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155 |
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156 if (invokeKind().equals(InvokeKind.Interface) && receiver instanceof UncheckedInterfaceProvider) { |
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157 UncheckedInterfaceProvider uncheckedInterfaceProvider = (UncheckedInterfaceProvider) receiver; |
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158 Stamp uncheckedStamp = uncheckedInterfaceProvider.uncheckedStamp(); |
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159 if (uncheckedStamp != null) { |
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160 ResolvedJavaType uncheckedReceiverType = StampTool.typeOrNull(uncheckedStamp); |
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161 if (uncheckedReceiverType.isInterface()) { |
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162 tryCheckCastSingleImplementor(receiver, uncheckedReceiverType); |
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163 } |
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164 } |
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165 } |
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166 } |
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167 } |
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168 |
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169 private void tryCheckCastSingleImplementor(ValueNode receiver, ResolvedJavaType declaredReceiverType) { |
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170 ResolvedJavaType singleImplementor = declaredReceiverType.getSingleImplementor(); |
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171 if (singleImplementor != null && !singleImplementor.equals(declaredReceiverType)) { |
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172 ResolvedJavaMethod singleImplementorMethod = singleImplementor.resolveMethod(targetMethod(), invoke().getContextType(), true); |
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173 if (singleImplementorMethod != null) { |
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174 assert graph().getGuardsStage().allowsFloatingGuards() : "Graph already fixed!"; |
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175 /** |
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176 * We have an invoke on an interface with a single implementor. We can replace this |
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177 * with an invoke virtual. |
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178 * |
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179 * To do so we need to ensure two properties: 1) the receiver must implement the |
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180 * interface (declaredReceiverType). The verifier does not prove this so we need a |
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181 * dynamic check. 2) we need to ensure that there is still only one implementor of |
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182 * this interface, i.e. that we are calling the right method. We could do this with |
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183 * an assumption but as we need an instanceof check anyway we can verify both |
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184 * properties by checking of the receiver is an instance of the single implementor. |
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185 */ |
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186 LogicNode condition = graph().unique(new InstanceOfNode(singleImplementor, receiver, getProfile())); |
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187 GuardNode guard = graph().unique( |
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188 new GuardNode(condition, AbstractBeginNode.prevBegin(invoke().asNode()), DeoptimizationReason.OptimizedTypeCheckViolated, DeoptimizationAction.InvalidateRecompile, |
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189 false, JavaConstant.NULL_POINTER)); |
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190 PiNode piNode = graph().unique(new PiNode(receiver, StampFactory.declaredNonNull(singleImplementor), guard)); |
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191 arguments().set(0, piNode); |
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192 setInvokeKind(InvokeKind.Virtual); |
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193 setTargetMethod(singleImplementorMethod); |
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194 } |
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195 } |
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196 } |
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197 |
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198 private JavaTypeProfile getProfile() { |
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199 assert !isStatic(); |
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200 if (receiver() instanceof TypeProfileProxyNode) { |
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201 // get profile from TypeProfileProxy |
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202 return ((TypeProfileProxyNode) receiver()).getProfile(); |
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203 } |
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204 // get profile from invoke() |
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205 ProfilingInfo profilingInfo = invoke().getContextMethod().getProfilingInfo(); |
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206 return profilingInfo.getTypeProfile(invoke().bci()); |
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207 } |
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208 |
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209 @Override |
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210 public Stamp returnStamp() { |
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211 Kind returnKind = targetMethod().getSignature().getReturnKind(); |
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212 if (returnKind == Kind.Object && returnType instanceof ResolvedJavaType) { |
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213 return StampFactory.declared((ResolvedJavaType) returnType); |
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214 } else { |
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compute returnStamp on demand in MethodCallTargetNode
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215 return StampFactory.forKind(returnKind); |
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216 } |
3733
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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217 } |
6409
823a2978e7ba
Lowering of call targets to direct / indirect call targets
Christian Wimmer <christian.wimmer@oracle.com>
parents:
5541
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218 |
7684
bbf97d6688d3
cleanup for the inlining policies
Christian Haeubl <haeubl@ssw.jku.at>
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219 public JavaType returnType() { |
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220 return returnType; |
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221 } |
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parents:
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222 |
6409
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223 @Override |
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224 public String targetName() { |
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Lowering of call targets to direct / indirect call targets
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225 if (targetMethod() == null) { |
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226 return "??Invalid!"; |
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227 } |
16480
10c12d09a8d2
moved format(String format, JavaMethod method) from MetaUtil to be a default method in JavaMethod
Doug Simon <doug.simon@oracle.com>
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228 return targetMethod().format("%h.%n"); |
6409
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parents:
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229 } |
7310
79a7b761755c
Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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230 |
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Added getLineNumberTable and getFileName capabilities.
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231 public static MethodCallTargetNode find(StructuredGraph graph, ResolvedJavaMethod method) { |
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Added getLineNumberTable and getFileName capabilities.
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232 for (MethodCallTargetNode target : graph.getNodes(MethodCallTargetNode.class)) { |
16564
688f84e397a3
Move the target method from MethodCallTargetNode and LoweredCallTargetNode to their superclass CallTargetNode
Gilles Duboscq <duboscq@ssw.jku.at>
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16563
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233 if (target.targetMethod().equals(method)) { |
7310
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234 return target; |
79a7b761755c
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235 } |
79a7b761755c
Added getLineNumberTable and getFileName capabilities.
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parents:
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236 } |
79a7b761755c
Added getLineNumberTable and getFileName capabilities.
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237 return null; |
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238 } |
3733
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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239 } |