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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java @ 13983:f46cab39a9a2

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Truffle: Updated inlining API. Pushed inlining implementation to the Truffle runtime.
author Christian Humer <christian.humer@gmail.com>
date Thu, 20 Feb 2014 01:21:49 +0100
parents 67e4e7f56911
children c5411233cdf8
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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 java.util.*;
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28
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29 import com.oracle.truffle.api.*;
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30 import com.oracle.truffle.api.CompilerDirectives.*;
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31 import com.oracle.truffle.api.frame.*;
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32
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33 /**
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34 * A root node is a node with a method to execute it given only a frame as a parameter. Therefore, a
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35 * root node can be used to create a call target using
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36 * {@link TruffleRuntime#createCallTarget(RootNode)}.
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37 */
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38 public abstract class RootNode extends Node {
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39
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40 private CallTarget callTarget;
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41 private final FrameDescriptor frameDescriptor;
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42
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43 /*
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44 * Internal field to keep reference to the inlined call node. The inlined parent should not be
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45 * the same as the Node parent to keep the same tree hierarchy if inlined vs not inlined.
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46 */
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47 @CompilationFinal private List<CallNode> parentInlinedCalls = new ArrayList<>();
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48
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49 protected RootNode() {
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50 this(null, null);
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51 }
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52
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53 protected RootNode(SourceSection sourceSection) {
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54 this(sourceSection, null);
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55 }
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56
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57 protected RootNode(SourceSection sourceSection, FrameDescriptor frameDescriptor) {
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58 super(sourceSection);
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59 if (frameDescriptor == null) {
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60 this.frameDescriptor = new FrameDescriptor();
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61 } else {
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62 this.frameDescriptor = frameDescriptor;
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63 }
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64 }
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65
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66 /**
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67 * @deprecated Not required anymore. Do not use.
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68 */
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69 @Deprecated
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70 public RootNode inline() {
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71 if (!isInlinable()) {
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72 throw new UnsupportedOperationException("Inlining is not enabled.");
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73 }
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74 return split();
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75 }
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76
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77 /**
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78 * @deprecated Not required anymore. Do not use.
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79 */
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80 @Deprecated
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81 public int getInlineNodeCount() {
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82 return 0;
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83 }
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84
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85 /**
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86 * @deprecated Not required anymore. Do not use.
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87 */
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88 @Deprecated
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89 public boolean isInlinable() {
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90 return true;
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91 }
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92
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93 public RootNode split() {
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94 return NodeUtil.cloneNode(this);
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95 }
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96
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97 public boolean isSplittable() {
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98 return false;
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99 }
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100
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101 /**
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102 * Reports the execution count of a loop that is a child of this node. The optimization
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103 * heuristics can use the loop count to guide compilation and inlining.
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104 */
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105 public void reportLoopCount(int count) {
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106 List<CallTarget> callTargets = NodeUtil.findOutermostCallTargets(this);
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107 for (CallTarget target : callTargets) {
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108 if (target instanceof LoopCountReceiver) {
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109 ((LoopCountReceiver) target).reportLoopCount(count);
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110 }
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111 }
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112 }
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113
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114 /**
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115 * Executes this function using the specified frame and returns the result value.
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116 *
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117 * @param frame the frame of the currently executing guest language method
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118 * @return the value of the execution
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119 */
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120 public abstract Object execute(VirtualFrame frame);
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121
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122 public CallTarget getCallTarget() {
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123 return callTarget;
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124 }
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125
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126 public final FrameDescriptor getFrameDescriptor() {
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127 return frameDescriptor;
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128 }
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129
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130 public void setCallTarget(CallTarget callTarget) {
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131 this.callTarget = callTarget;
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132 }
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133
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134 /* Internal API. Do not use. */
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135 void addParentInlinedCall(CallNode inlinedParent) {
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136 this.parentInlinedCalls.add(inlinedParent);
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137 }
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138
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139 public final List<CallNode> getParentInlinedCalls() {
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140 return Collections.unmodifiableList(parentInlinedCalls);
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141 }
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142
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143 /**
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144 * @deprecated use {@link #getParentInlinedCalls()} instead.
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145 */
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146 @Deprecated
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147 public final CallNode getParentInlinedCall() {
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148 return parentInlinedCalls.isEmpty() ? null : parentInlinedCalls.get(0);
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149 }
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150 }