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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MethodCallTargetNode.java @ 19250:8ab925a6f724

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made Assumptions be part of a StructuredGraph
author Doug Simon <doug.simon@oracle.com>
date Wed, 11 Feb 2015 10:13:08 +0100
parents 0b05bd821399
children a0a760b0fb5f
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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.code.*;
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26 import com.oracle.graal.api.meta.*;
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27 import com.oracle.graal.compiler.common.type.*;
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28 import com.oracle.graal.graph.*;
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29 import com.oracle.graal.graph.spi.*;
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30 import com.oracle.graal.nodeinfo.*;
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31 import com.oracle.graal.nodes.*;
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32 import com.oracle.graal.nodes.spi.*;
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33 import com.oracle.graal.nodes.type.*;
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34
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35 @NodeInfo
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36 public class MethodCallTargetNode extends CallTargetNode implements IterableNodeType, Simplifiable {
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37 protected final JavaType returnType;
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38
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39 public MethodCallTargetNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ValueNode[] arguments, JavaType returnType) {
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40 super(arguments, targetMethod, invokeKind);
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41 this.returnType = returnType;
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42 }
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43
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44 /**
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45 * Gets the instruction that produces the receiver object for this invocation, if any.
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46 *
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47 * @return the instruction that produces the receiver object for this invocation if any,
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48 * {@code null} if this invocation does not take a receiver object
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49 */
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50 public ValueNode receiver() {
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51 return isStatic() ? null : arguments().get(0);
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52 }
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53
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54 /**
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55 * Checks whether this is an invocation of a static method.
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56 *
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57 * @return {@code true} if the invocation is a static invocation
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58 */
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59 public boolean isStatic() {
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60 return invokeKind() == InvokeKind.Static;
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61 }
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62
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63 public Kind returnKind() {
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64 return targetMethod().getSignature().getReturnKind();
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65 }
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66
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67 public Invoke invoke() {
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68 return (Invoke) this.usages().first();
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69 }
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70
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71 @Override
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72 public boolean verify() {
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73 assert getUsageCount() <= 1 : "call target may only be used by a single invoke";
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74 for (Node n : usages()) {
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75 assertTrue(n instanceof Invoke, "call target can only be used from an invoke (%s)", n);
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76 }
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77 if (invokeKind().isDirect()) {
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78 assertTrue(targetMethod().isConcrete(), "special calls or static calls are only allowed for concrete methods (%s)", targetMethod());
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79 }
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80 if (invokeKind() == InvokeKind.Static) {
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81 assertTrue(targetMethod().isStatic(), "static calls are only allowed for static methods (%s)", targetMethod());
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82 } else {
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83 assertFalse(targetMethod().isStatic(), "static calls are only allowed for non-static methods (%s)", targetMethod());
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84 }
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85 return super.verify();
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86 }
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87
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88 @Override
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89 public String toString(Verbosity verbosity) {
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90 if (verbosity == Verbosity.Long) {
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91 return super.toString(Verbosity.Short) + "(" + targetMethod() + ")";
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92 } else {
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93 return super.toString(verbosity);
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94 }
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95 }
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96
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97 public static ResolvedJavaMethod findSpecialCallTarget(InvokeKind invokeKind, ValueNode receiver, ResolvedJavaMethod targetMethod, ResolvedJavaType contextType) {
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98 if (targetMethod.getName().equals("getProperties") && receiver.graph().method().getDeclaringClass().getName().equals("Ljava/lang/Character;")) {
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99 System.console();
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100 }
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101
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102 if (invokeKind.isDirect()) {
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103 return null;
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104 }
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105
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106 // check for trivial cases (e.g. final methods, nonvirtual methods)
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107 if (targetMethod.canBeStaticallyBound()) {
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108 return targetMethod;
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109 }
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110
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111 ResolvedJavaType type = StampTool.typeOrNull(receiver);
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112 if (type == null && invokeKind == InvokeKind.Virtual) {
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113 // For virtual calls, we are guaranteed to receive a correct receiver type.
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114 type = targetMethod.getDeclaringClass();
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115 }
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116
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117 if (type != null) {
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118 /*
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119 * either the holder class is exact, or the receiver object has an exact type, or it's
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120 * an array type
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121 */
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122 ResolvedJavaMethod resolvedMethod = type.resolveConcreteMethod(targetMethod, contextType);
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123 if (resolvedMethod != null && (resolvedMethod.canBeStaticallyBound() || StampTool.isExactType(receiver) || type.isArray())) {
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124 return resolvedMethod;
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125 }
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126 Assumptions assumptions = receiver.graph().getAssumptions();
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127 if (assumptions.useOptimisticAssumptions()) {
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128 ResolvedJavaType uniqueConcreteType = type.findUniqueConcreteSubtype();
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129 if (uniqueConcreteType != null) {
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130 ResolvedJavaMethod methodFromUniqueType = uniqueConcreteType.resolveConcreteMethod(targetMethod, contextType);
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131 if (methodFromUniqueType != null) {
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132 assumptions.recordConcreteSubtype(type, uniqueConcreteType);
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133 return methodFromUniqueType;
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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 assumptions.recordConcreteMethod(targetMethod, type, uniqueConcreteMethod);
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140 return uniqueConcreteMethod;
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141 }
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142 }
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143 }
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144
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145 return null;
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146 }
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147
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148 @Override
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149 public void simplify(SimplifierTool tool) {
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150 // attempt to devirtualize the call
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151 ResolvedJavaType contextType = (invoke().stateAfter() == null && invoke().stateDuring() == null) ? null : invoke().getContextType();
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152 ResolvedJavaMethod specialCallTarget = findSpecialCallTarget(invokeKind, receiver(), targetMethod, contextType);
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153 if (specialCallTarget != null) {
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154 this.setTargetMethod(specialCallTarget);
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155 setInvokeKind(InvokeKind.Special);
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156 return;
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157 }
14746
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parents: 14158
diff changeset
158
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159 if (invokeKind().isIndirect() && invokeKind().isInterface()) {
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160
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diff changeset
161 // check if the type of the receiver can narrow the result
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162 ValueNode receiver = receiver();
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163
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164 // try to turn a interface call into a virtual call
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165 ResolvedJavaType declaredReceiverType = targetMethod().getDeclaringClass();
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166 /*
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167 * We need to check the invoke kind to avoid recursive simplification for virtual
3cc813ce3cea MethodCallTargetNode: document the single implementor optimization.
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168 * interface methods calls.
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diff changeset
169 */
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diff changeset
170 if (declaredReceiverType.isInterface()) {
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diff changeset
171 tryCheckCastSingleImplementor(receiver, declaredReceiverType);
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172 }
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173
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174 if (receiver instanceof UncheckedInterfaceProvider) {
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175 UncheckedInterfaceProvider uncheckedInterfaceProvider = (UncheckedInterfaceProvider) receiver;
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diff changeset
176 Stamp uncheckedStamp = uncheckedInterfaceProvider.uncheckedStamp();
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diff changeset
177 if (uncheckedStamp != null) {
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178 ResolvedJavaType uncheckedReceiverType = StampTool.typeOrNull(uncheckedStamp);
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diff changeset
179 if (uncheckedReceiverType.isInterface()) {
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180 tryCheckCastSingleImplementor(receiver, uncheckedReceiverType);
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181 }
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182 }
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183 }
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184 }
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185 }
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186
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diff changeset
187 private void tryCheckCastSingleImplementor(ValueNode receiver, ResolvedJavaType declaredReceiverType) {
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188 ResolvedJavaType singleImplementor = declaredReceiverType.getSingleImplementor();
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diff changeset
189 if (singleImplementor != null && !singleImplementor.equals(declaredReceiverType)) {
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diff changeset
190 ResolvedJavaMethod singleImplementorMethod = singleImplementor.resolveMethod(targetMethod(), invoke().getContextType(), true);
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diff changeset
191 if (singleImplementorMethod != null) {
18970
edf3a7fdd067 Add utility methods to GuardsStage.
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parents: 18969
diff changeset
192 assert graph().getGuardsStage().allowsFloatingGuards() : "Graph already fixed!";
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diff changeset
193 /**
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diff changeset
194 * We have an invoke on an interface with a single implementor. We can replace this
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diff changeset
195 * with an invoke virtual.
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diff changeset
196 *
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diff changeset
197 * To do so we need to ensure two properties: 1) the receiver must implement the
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diff changeset
198 * interface (declaredReceiverType). The verifier does not prove this so we need a
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diff changeset
199 * dynamic check. 2) we need to ensure that there is still only one implementor of
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diff changeset
200 * this interface, i.e. that we are calling the right method. We could do this with
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diff changeset
201 * an assumption but as we need an instanceof check anyway we can verify both
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diff changeset
202 * properties by checking of the receiver is an instance of the single implementor.
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diff changeset
203 */
18845
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18823
diff changeset
204 LogicNode condition = graph().unique(new InstanceOfNode(singleImplementor, receiver, getProfile()));
18467
1d2e382d8259 Add UncheckedInterfaceProvider interface for nodes that can give an unchecked hint about the interface type they are likely to return.
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diff changeset
205 GuardNode guard = graph().unique(
18998
ec0733b5a90a Allow final modifier on node subclasses and start adding the modifier to leaf classes.
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parents: 18993
diff changeset
206 new GuardNode(condition, AbstractBeginNode.prevBegin(invoke().asNode()), DeoptimizationReason.OptimizedTypeCheckViolated, DeoptimizationAction.InvalidateRecompile,
ec0733b5a90a Allow final modifier on node subclasses and start adding the modifier to leaf classes.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18993
diff changeset
207 false, JavaConstant.NULL_POINTER));
18845
f57d86eb036f removed Node factory methods
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parents: 18823
diff changeset
208 PiNode piNode = graph().unique(new PiNode(receiver, StampFactory.declaredNonNull(singleImplementor), guard));
18467
1d2e382d8259 Add UncheckedInterfaceProvider interface for nodes that can give an unchecked hint about the interface type they are likely to return.
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diff changeset
209 arguments().set(0, piNode);
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diff changeset
210 setInvokeKind(InvokeKind.Virtual);
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diff changeset
211 setTargetMethod(singleImplementorMethod);
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diff changeset
212 }
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parents: 18315
diff changeset
213 }
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parents: 18315
diff changeset
214 }
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diff changeset
215
18250
34cb95edfc97 MethodCallTargetNode: get profile from TypeProfileProxy if available.
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parents: 18244
diff changeset
216 private JavaTypeProfile getProfile() {
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diff changeset
217 assert !isStatic();
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diff changeset
218 if (receiver() instanceof TypeProfileProxyNode) {
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diff changeset
219 // get profile from TypeProfileProxy
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diff changeset
220 return ((TypeProfileProxyNode) receiver()).getProfile();
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diff changeset
221 }
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Josef Eisl <josef.eisl@jku.at>
parents: 18244
diff changeset
222 // get profile from invoke()
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Josef Eisl <josef.eisl@jku.at>
parents: 18244
diff changeset
223 ProfilingInfo profilingInfo = invoke().getContextMethod().getProfilingInfo();
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parents: 18244
diff changeset
224 return profilingInfo.getTypeProfile(invoke().bci());
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parents: 18244
diff changeset
225 }
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parents: 18244
diff changeset
226
6409
823a2978e7ba Lowering of call targets to direct / indirect call targets
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parents: 5541
diff changeset
227 @Override
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parents:
diff changeset
228 public Stamp returnStamp() {
16564
688f84e397a3 Move the target method from MethodCallTargetNode and LoweredCallTargetNode to their superclass CallTargetNode
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parents: 16563
diff changeset
229 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
230 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
231 return StampFactory.declared((ResolvedJavaType) returnType);
5283
8dd6165d7b73 compute returnStamp on demand in MethodCallTargetNode
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
232 } else {
8dd6165d7b73 compute returnStamp on demand in MethodCallTargetNode
Lukas Stadler <lukas.stadler@jku.at>
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diff changeset
233 return StampFactory.forKind(returnKind);
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parents: 5061
diff changeset
234 }
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diff changeset
235 }
6409
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diff changeset
236
7684
bbf97d6688d3 cleanup for the inlining policies
Christian Haeubl <haeubl@ssw.jku.at>
parents: 7310
diff changeset
237 public JavaType returnType() {
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Christian Haeubl <haeubl@ssw.jku.at>
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diff changeset
238 return returnType;
bbf97d6688d3 cleanup for the inlining policies
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parents: 7310
diff changeset
239 }
bbf97d6688d3 cleanup for the inlining policies
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parents: 7310
diff changeset
240
6409
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Christian Wimmer <christian.wimmer@oracle.com>
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diff changeset
241 @Override
823a2978e7ba Lowering of call targets to direct / indirect call targets
Christian Wimmer <christian.wimmer@oracle.com>
parents: 5541
diff changeset
242 public String targetName() {
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 5541
diff changeset
243 if (targetMethod() == null) {
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 5541
diff changeset
244 return "??Invalid!";
823a2978e7ba Lowering of call targets to direct / indirect call targets
Christian Wimmer <christian.wimmer@oracle.com>
parents: 5541
diff changeset
245 }
16480
10c12d09a8d2 moved format(String format, JavaMethod method) from MetaUtil to be a default method in JavaMethod
Doug Simon <doug.simon@oracle.com>
parents: 16174
diff changeset
246 return targetMethod().format("%h.%n");
6409
823a2978e7ba Lowering of call targets to direct / indirect call targets
Christian Wimmer <christian.wimmer@oracle.com>
parents: 5541
diff changeset
247 }
7310
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
248
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
249 public static MethodCallTargetNode find(StructuredGraph graph, ResolvedJavaMethod method) {
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
250 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>
parents: 16563
diff changeset
251 if (target.targetMethod().equals(method)) {
7310
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
252 return target;
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
253 }
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
254 }
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
255 return null;
79a7b761755c Added getLineNumberTable and getFileName capabilities.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7123
diff changeset
256 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
257 }