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annotate graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/nodes/frame/FrameAccessNode.java @ 11881:da9db8331658

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moved Canonicalizable and Simplifiable to the com.oracle.graal.graph project (GRAAL-506)
author Doug Simon <doug.simon@oracle.com>
date Tue, 01 Oct 2013 20:38:25 +0200
parents 0e2cceed1caf
children 3cd7b1a27645
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1 /*
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2 * Copyright (c) 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.
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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.truffle.nodes.frame;
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24
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25 import java.lang.reflect.*;
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26 import java.util.*;
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27
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.graph.spi.*;
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30 import com.oracle.graal.nodes.*;
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31 import com.oracle.graal.nodes.calc.*;
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32 import com.oracle.graal.nodes.java.*;
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33 import com.oracle.graal.nodes.spi.*;
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34 import com.oracle.graal.nodes.type.*;
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35 import com.oracle.graal.truffle.*;
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36 import com.oracle.graal.truffle.nodes.*;
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37 import com.oracle.graal.truffle.substitutions.*;
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38 import com.oracle.truffle.api.frame.*;
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39
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40 /**
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41 * Base node class for the intrinsic nodes for read and write access to a Truffle frame.
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42 */
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43 public abstract class FrameAccessNode extends FixedWithNextNode implements Simplifiable {
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44
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45 @Input private ValueNode frame;
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46 @Input private ValueNode slot;
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47 protected final ResolvedJavaField field;
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48 protected final Kind slotKind;
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49
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50 public FrameAccessNode(Stamp stamp, Kind slotKind, ValueNode frame, ValueNode slot, ResolvedJavaField field) {
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51 super(stamp);
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52 this.slotKind = slotKind;
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53 this.frame = frame;
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54 this.slot = slot;
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55 this.field = field;
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56 }
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57
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58 public ValueNode getFrame() {
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59 return frame;
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60 }
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61
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62 public ValueNode getSlot() {
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63 return slot;
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64 }
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65
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66 public Kind getSlotKind() {
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67 return slotKind;
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68 }
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69
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70 protected int getSlotIndex() {
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71 return getConstantFrameSlot().getIndex();
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72 }
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73
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74 public boolean isConstantFrameSlot() {
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75 return slot.isConstant() && !slot.isNullConstant();
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76 }
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77
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78 protected FrameSlot getConstantFrameSlot() {
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79 assert isConstantFrameSlot() : slot;
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80 return (FrameSlot) slot.asConstant().asObject();
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81 }
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82
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83 protected final void insertDeoptimization(VirtualizerTool tool) {
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84 LogicNode contradiction = LogicConstantNode.contradiction(graph());
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85 FixedGuardNode fixedGuard = new FixedGuardNode(contradiction, DeoptimizationReason.UnreachedCode, DeoptimizationAction.InvalidateReprofile);
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86 tool.addNode(fixedGuard);
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87 }
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88
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89 @Override
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90 public String toString(Verbosity verbosity) {
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91 if (verbosity == Verbosity.Name) {
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92 return super.toString(verbosity) + getSlotKind().name() + (slot != null && isConstantFrameSlot() ? " " + getConstantFrameSlot() : "");
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93 } else {
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94 return super.toString(verbosity);
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95 }
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96 }
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97
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98 protected final ValueNode getSlotOffset(int scale, MetaAccessProvider metaAccessProvider) {
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99 if (isConstantFrameSlot()) {
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100 return ConstantNode.forInt(getSlotIndex() * scale, graph());
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101 } else {
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102 LoadFieldNode loadFrameSlotIndex = graph().add(new LoadFieldNode(getSlot(), metaAccessProvider.lookupJavaField(getFrameSlotIndexField())));
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103 graph().addBeforeFixed(this, loadFrameSlotIndex);
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104 return scale == 1 ? loadFrameSlotIndex : IntegerArithmeticNode.mul(loadFrameSlotIndex, ConstantNode.forInt(scale, graph()));
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105 }
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106 }
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107
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108 private static Field getFrameSlotIndexField() {
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109 try {
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110 return FrameSlotImpl.class.getDeclaredField("index");
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111 } catch (NoSuchFieldException e) {
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112 throw new RuntimeException(e);
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113 }
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114 }
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115
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116 protected final boolean isValidAccessKind() {
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117 if (isTagAccess()) {
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118 return true;
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119 }
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120
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121 return getSlotKind() == getGraalKind(getConstantFrameSlot().getKind());
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122 }
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123
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124 protected final boolean isTagAccess() {
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125 return field == FrameWithoutBoxingSubstitutions.TAGS_FIELD;
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126 }
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127
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128 private static Kind getGraalKind(FrameSlotKind kind) {
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129 switch (kind) {
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130 case Object:
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131 return Kind.Object;
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132 case Long:
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133 return Kind.Long;
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134 case Int:
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135 return Kind.Int;
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136 case Byte:
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137 return Kind.Byte;
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138 case Double:
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139 return Kind.Double;
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140 case Float:
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141 return Kind.Float;
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142 case Boolean:
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143 return Kind.Boolean;
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144 case Illegal:
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145 default:
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146 return Kind.Illegal;
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147 }
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148 }
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149
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150 @Override
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151 public final void simplify(SimplifierTool tool) {
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152 if (isConstantFrameSlot()) {
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153 if (!isValidAccessKind()) {
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154 tool.deleteBranch(this.next());
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155 this.replaceAndDelete(graph().add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.UnreachedCode)));
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156 } else {
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157 tool.assumptions().record(new AssumptionValidAssumption((OptimizedAssumption) getConstantFrameSlot().getFrameDescriptor().getVersion()));
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158 }
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159 }
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160 }
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161
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162 @Override
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163 public Map<Object, Object> getDebugProperties(Map<Object, Object> map) {
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164 Map<Object, Object> properties = super.getDebugProperties(map);
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165 if (isTagAccess()) {
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166 properties.put("slotKind", "Tag");
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167 }
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168 if (isConstantFrameSlot()) {
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169 properties.put("frameSlot", getConstantFrameSlot().toString());
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170 }
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171 return properties;
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172 }
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173 }