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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/CallNode.java @ 14073:c5411233cdf8

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Truffle: Now keeps track of all not just inlined call-sites called by CallNode. Deprecated some old API in NodeUtil.
author Christian Humer <christian.humer@gmail.com>
date Wed, 05 Mar 2014 23:33:25 +0100
parents f46cab39a9a2
children f157fabf6b38
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1 /*
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2 * Copyright (c) 2012, 2013, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.nodes;
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26
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27 import com.oracle.truffle.api.*;
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28 import com.oracle.truffle.api.frame.*;
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29
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30 /**
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31 * This node represents a call to a static {@link CallTarget}. This node should be used whenever a
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32 * {@link CallTarget} is considered constant at a certain location in the tree. This enables the
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33 * Truffle runtime to perform inlining or other optimizations for this call-site. This class is
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34 * intended to be implemented by truffle runtime implementors and not by guest language
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35 * implementors.
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36 *
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37 * @see #create(CallTarget) to create a CallNode instance.
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38 */
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39 public abstract class CallNode extends Node {
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40
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41 protected final CallTarget callTarget;
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42
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43 protected CallNode(CallTarget callTarget) {
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44 this.callTarget = callTarget;
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45 }
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46
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47 /**
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48 * Calls this constant target passing a caller frame and arguments.
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49 *
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50 * @param caller the caller frame
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51 * @param arguments the arguments that should be passed to the callee
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52 * @return the return result of the call
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53 */
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54 public abstract Object call(PackedFrame caller, Arguments arguments);
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55
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56 /**
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57 * Returns the originally supplied {@link CallTarget} when this call node was created. Please
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58 * note that the returned {@link CallTarget} is not necessarily the {@link CallTarget} that is
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59 * called. For that use {@link #getCurrentCallTarget()} instead.
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60 *
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61 * @return the {@link CallTarget} provided.
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62 */
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63 public CallTarget getCallTarget() {
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64 return callTarget;
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65 }
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66
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67 public abstract boolean isInlinable();
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68
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69 /**
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70 * @return true if this {@link CallNode} was already inlined.
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71 */
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72 public abstract boolean isInlined();
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73
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74 public abstract void inline();
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75
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76 public abstract boolean isSplittable();
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77
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78 public abstract boolean split();
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79
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80 public final boolean isSplit() {
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81 return getSplitCallTarget() != null;
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82 }
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83
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84 public abstract CallTarget getSplitCallTarget();
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85
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86 /**
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87 * Returns the used call target when {@link #call(PackedFrame, Arguments)} is invoked. If the
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88 * {@link CallNode} was split this method returns the {@link CallTarget} returned by
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89 * {@link #getSplitCallTarget()}. If not split this method returns the original supplied
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90 * {@link CallTarget}.
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91 *
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92 * @return the used {@link CallTarget} when node is called
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93 */
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94 public CallTarget getCurrentCallTarget() {
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95 CallTarget split = getSplitCallTarget();
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96 if (split != null) {
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97 return split;
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98 } else {
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99 return getCallTarget();
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100 }
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101 }
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102
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103 @Override
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104 protected void onReplace(Node newNode, String reason) {
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105 super.onReplace(newNode, reason);
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106
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107 /*
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108 * Old call nodes are removed in the old target root node.
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109 */
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110 CallNode oldCall = this;
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111 RootNode oldRoot = getCurrentRootNode();
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112 if (oldRoot != null) {
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113 oldRoot.removeCachedCallNode(oldCall);
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114 }
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116 /*
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117 * New call nodes are registered in the new target root node.
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118 */
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119 CallNode newCall = (CallNode) newNode;
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120 RootNode newRoot = newCall.getCurrentRootNode();
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121 if (newRoot != null) {
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122 newRoot.addCachedCallNode(newCall);
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123 }
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124 }
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125
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126 /**
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127 * Returns the {@link RootNode} associated with {@link CallTarget} returned by
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128 * {@link #getCurrentCallTarget()}.
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129 *
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130 * @see #getCurrentCallTarget()
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131 * @return the root node of the used call target
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132 */
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133 public final RootNode getCurrentRootNode() {
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134 CallTarget target = getCurrentCallTarget();
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135 if (target instanceof RootCallTarget) {
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136 return ((RootCallTarget) target).getRootNode();
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137 }
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138 return null;
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139 }
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140
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141 /**
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142 * @deprecated instead use {@link #getCurrentRootNode()} and check for {@link #isInlined()} for
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143 * true.
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144 */
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145 @Deprecated
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146 public RootNode getInlinedRoot() {
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147 if (!isInlined()) {
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148 return null;
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149 }
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150 return getCurrentRootNode();
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151 }
13811
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152
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153 /**
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154 * Creates a new {@link CallNode} using a {@link CallTarget}.
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155 *
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156 * @param target the {@link CallTarget} to call
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157 * @return a call node that calls the provided target
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158 * @deprecated use {@link TruffleRuntime#createCallNode(CallTarget)} instead
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159 */
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160 @Deprecated
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161 public static CallNode create(CallTarget target) {
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162 return Truffle.getRuntime().createCallNode(target);
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163 }
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164
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165 }