Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/CallNode.java @ 13215:dca16b3416ab
Don't peel counted loops.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 03 Dec 2013 11:10:16 +0100 |
parents | 71991b7a0f14 |
children | 06afa0db90b3 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2012, 2012, 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.truffle.sl.nodes; |
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24 |
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25 import com.oracle.truffle.api.*; |
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26 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal; |
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27 import com.oracle.truffle.api.frame.*; |
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28 import com.oracle.truffle.api.impl.*; |
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29 import com.oracle.truffle.api.nodes.*; |
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30 import com.oracle.truffle.sl.runtime.*; |
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31 |
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32 public abstract class CallNode extends TypedNode { |
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33 |
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34 private static final int INLINE_CACHE_SIZE = 2; |
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35 |
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36 @Child protected TypedNode functionNode; |
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37 |
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38 private CallNode(TypedNode functionNode) { |
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39 this.functionNode = adoptChild(functionNode); |
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40 } |
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41 |
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42 private CallTarget executeCallTargetNode(VirtualFrame frame) { |
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43 try { |
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44 return functionNode.executeCallTarget(frame); |
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45 } catch (UnexpectedResultException e) { |
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46 throw new UnsupportedOperationException("Call to " + e.getMessage() + " not supported."); |
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47 } |
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48 } |
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49 |
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50 @Override |
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51 public final Object executeGeneric(VirtualFrame frame) { |
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52 return executeGeneric(frame, executeCallTargetNode(frame)); |
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53 } |
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54 |
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55 public abstract Object executeGeneric(VirtualFrame frame, CallTarget function); |
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56 |
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57 public static CallNode create(TypedNode function, TypedNode[] arguments) { |
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58 return new UninitializedCallNode(function, new ArgumentsNode(arguments), 0); |
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59 } |
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60 |
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61 private static final class CachedCallNode extends CallNode { |
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62 |
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63 @Child protected CallNode nextNode; |
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64 @Child protected TypedNode currentNode; |
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65 private final CallTarget cachedFunction; |
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66 |
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67 public CachedCallNode(TypedNode function, TypedNode current, CallNode next, CallTarget cachedFunction) { |
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68 super(function); |
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69 this.currentNode = adoptChild(current); |
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70 this.nextNode = adoptChild(next); |
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71 this.cachedFunction = cachedFunction; |
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72 } |
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73 |
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74 @Override |
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75 public Object executeGeneric(VirtualFrame frame, CallTarget function) { |
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76 if (this.cachedFunction == function) { |
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77 return currentNode.executeGeneric(frame); |
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78 } |
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79 return nextNode.executeGeneric(frame, function); |
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80 } |
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81 } |
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82 |
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83 private static final class UninitializedCallNode extends CallNode { |
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84 |
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85 @Child protected ArgumentsNode uninitializedArgs; |
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86 protected final int depth; |
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87 |
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88 UninitializedCallNode(TypedNode function, ArgumentsNode args, int depth) { |
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89 super(function); |
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90 this.uninitializedArgs = adoptChild(args); |
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91 this.depth = depth; |
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92 } |
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93 |
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94 UninitializedCallNode(UninitializedCallNode copy) { |
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95 super(null); |
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96 this.uninitializedArgs = adoptChild(copy.uninitializedArgs); |
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97 this.depth = copy.depth + 1; |
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98 } |
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99 |
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100 @Override |
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101 public Object executeGeneric(VirtualFrame frame, CallTarget function) { |
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102 CompilerDirectives.transferToInterpreter(); |
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103 return specialize(function).executeGeneric(frame, function); |
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104 } |
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105 |
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106 private CallNode specialize(CallTarget function) { |
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107 CompilerAsserts.neverPartOfCompilation(); |
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108 |
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109 if (depth < INLINE_CACHE_SIZE) { |
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110 TypedNode current = createCacheNode(function); |
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111 CallNode next = new UninitializedCallNode(this); |
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112 return replace(new CachedCallNode(this.functionNode, current, next, function)); |
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113 } else { |
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114 CallNode topMost = (CallNode) getTopNode(); |
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115 return topMost.replace(new GenericCallNode(topMost.functionNode, uninitializedArgs)); |
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116 } |
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117 } |
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118 |
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119 protected Node getTopNode() { |
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120 Node parentNode = this; |
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121 for (int i = 0; i < depth; i++) { |
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122 parentNode = parentNode.getParent(); |
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123 } |
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124 return parentNode; |
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125 } |
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126 |
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127 protected TypedNode createCacheNode(CallTarget function) { |
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128 ArgumentsNode clonedArgs = NodeUtil.cloneNode(uninitializedArgs); |
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129 |
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130 if (function instanceof DefaultCallTarget) { |
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131 DefaultCallTarget defaultFunction = (DefaultCallTarget) function; |
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132 RootNode rootNode = defaultFunction.getRootNode(); |
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133 if (rootNode instanceof FunctionRootNode) { |
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134 FunctionRootNode root = (FunctionRootNode) rootNode; |
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135 if (root.isAlwaysInline()) { |
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136 TypedNode inlinedCall = root.inline(clonedArgs); |
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137 if (inlinedCall != null) { |
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138 return inlinedCall; |
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139 } |
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140 } |
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141 return new InlinableCallNode((DefaultCallTarget) function, clonedArgs); |
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142 } |
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143 } |
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144 |
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145 // got a call target that is not inlinable (should not occur for SL) |
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146 return new DispatchedCallNode(function, clonedArgs); |
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147 } |
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148 } |
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149 |
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150 private static final class InlinableCallNode extends DispatchedCallNode implements InlinableCallSite { |
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151 |
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152 private final DefaultCallTarget inlinableTarget; |
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153 |
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154 @CompilationFinal private int callCount; |
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155 |
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156 InlinableCallNode(DefaultCallTarget function, ArgumentsNode arguments) { |
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157 super(function, arguments); |
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158 this.inlinableTarget = function; |
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159 } |
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160 |
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161 @Override |
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162 public int getCallCount() { |
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163 return callCount; |
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164 } |
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165 |
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166 @Override |
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167 public void resetCallCount() { |
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168 callCount = 0; |
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169 } |
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170 |
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171 @Override |
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172 public Node getInlineTree() { |
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173 RootNode root = inlinableTarget.getRootNode(); |
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174 if (root instanceof FunctionRootNode) { |
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175 return ((FunctionRootNode) root).getUninitializedBody(); |
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176 } |
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177 return null; |
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178 } |
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179 |
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180 @Override |
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181 public boolean inline(FrameFactory factory) { |
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182 CompilerAsserts.neverPartOfCompilation(); |
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183 TypedNode functionCall = null; |
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184 |
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185 RootNode root = inlinableTarget.getRootNode(); |
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186 if (root instanceof FunctionRootNode) { |
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187 functionCall = ((FunctionRootNode) root).inline(NodeUtil.cloneNode(args)); |
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188 } |
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189 if (functionCall != null) { |
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190 this.replace(functionCall); |
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191 return true; |
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192 } else { |
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193 return false; |
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194 } |
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195 } |
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196 |
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197 @Override |
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198 public Object executeGeneric(VirtualFrame frame) { |
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199 if (CompilerDirectives.inInterpreter()) { |
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200 callCount++; |
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201 } |
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202 return super.executeGeneric(frame); |
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203 } |
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204 |
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205 @Override |
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206 public CallTarget getCallTarget() { |
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207 return inlinableTarget; |
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208 } |
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209 |
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210 } |
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212 private static class DispatchedCallNode extends TypedNode { |
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214 @Child protected ArgumentsNode args; |
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215 protected final CallTarget function; |
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217 DispatchedCallNode(CallTarget function, ArgumentsNode arguments) { |
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218 this.args = adoptChild(arguments); |
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219 this.function = function; |
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220 } |
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222 @Override |
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223 public Object executeGeneric(VirtualFrame frame) { |
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224 SLArguments argsObject = new SLArguments(args.executeArray(frame)); |
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225 return function.call(frame.pack(), argsObject); |
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229 private static final class GenericCallNode extends CallNode { |
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231 @Child protected ArgumentsNode args; |
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233 GenericCallNode(TypedNode functionNode, ArgumentsNode arguments) { |
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234 super(functionNode); |
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235 this.args = adoptChild(arguments); |
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236 } |
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238 @Override |
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239 public Object executeGeneric(VirtualFrame frame, CallTarget function) { |
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240 SLArguments argsObject = new SLArguments(args.executeArray(frame)); |
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241 return function.call(frame.pack(), argsObject); |
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242 } |
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245 } |