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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/NewInstanceNode.java @ 6286:67a357e3e42a

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infrastructure changes in preparation of partial escape analysis
author Lukas Stadler <lukas.stadler@jku.at>
date Fri, 24 Aug 2012 11:45:30 +0200
parents d241f8b2e6f9
children 6a324c13cfff
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1 /*
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2 * Copyright (c) 2009, 2011, 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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25 import java.util.*;
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26
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27 import com.oracle.graal.api.meta.*;
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28 import com.oracle.graal.graph.*;
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29 import com.oracle.graal.nodes.*;
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30 import com.oracle.graal.nodes.spi.*;
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31 import com.oracle.graal.nodes.type.*;
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32 import com.oracle.graal.nodes.util.*;
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34 /**
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35 * The {@code NewInstanceNode} represents the allocation of an instance class object.
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36 */
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37 @NodeInfo(nameTemplate = "New {p#instanceClass/s}")
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38 public final class NewInstanceNode extends FixedWithNextNode implements EscapeAnalyzable, Lowerable, LIRLowerable, Node.IterableNodeType {
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39
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40 private final ResolvedJavaType instanceClass;
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41
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42 /**
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43 * Constructs a NewInstanceNode.
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44 * @param type the class being allocated
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45 */
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46 public NewInstanceNode(ResolvedJavaType type) {
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47 super(StampFactory.exactNonNull(type));
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48 this.instanceClass = type;
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49 }
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50
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51 /**
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52 * Gets the instance class being allocated by this node.
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53 * @return the instance class allocated
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54 */
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55 public ResolvedJavaType instanceClass() {
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56 return instanceClass;
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57 }
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58
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59 @Override
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60 public void lower(LoweringTool tool) {
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61 tool.getRuntime().lower(this, tool);
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62 }
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63
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64 @Override
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65 public void generate(LIRGeneratorTool gen) {
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66 gen.visitNewInstance(this);
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67 }
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68
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69 public EscapeOp getEscapeOp() {
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70 return instanceClass == null ? null : ESCAPE;
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71 }
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72
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73 private static final EscapeOp ESCAPE = new EscapeOp() {
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74
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75 @Override
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76 public boolean canAnalyze(Node node) {
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77 return true;
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78 }
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79
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80 private void fillEscapeFields(ResolvedJavaType type, List<EscapeField> escapeFields) {
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81 if (type != null) {
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82 fillEscapeFields(type.superType(), escapeFields);
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83 JavaField[] declaredFields = type.declaredFields();
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84 assert declaredFields != null : "the runtime must specify the declared fields of that type";
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85 for (JavaField field : declaredFields) {
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86 escapeFields.add(new EscapeField(field.name(), field, field.type()));
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87 }
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88 }
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89 }
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90
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91 @Override
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92 public ResolvedJavaType type(Node node) {
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93 NewInstanceNode x = (NewInstanceNode) node;
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94 return x.instanceClass();
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95 }
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96
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97 @Override
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98 public EscapeField[] fields(Node node) {
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99 NewInstanceNode x = (NewInstanceNode) node;
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100 List<EscapeField> escapeFields = new ArrayList<>();
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101 fillEscapeFields(x.instanceClass(), escapeFields);
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102 return escapeFields.toArray(new EscapeField[escapeFields.size()]);
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103 }
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104
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105 @Override
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106 public void beforeUpdate(Node node, Node usage) {
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107 if (usage instanceof RegisterFinalizerNode) {
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108 RegisterFinalizerNode x = (RegisterFinalizerNode) usage;
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109 ((StructuredGraph) x.graph()).removeFixed(x);
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110 } else {
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111 super.beforeUpdate(node, usage);
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112 }
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113 }
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114
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115 @Override
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116 public int updateState(Node node, Node current, Map<Object, Integer> fieldIndex, ValueNode[] fieldState) {
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117 if (current instanceof AccessFieldNode) {
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118 AccessFieldNode x = (AccessFieldNode) current;
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119 if (GraphUtil.unProxify(x.object()) == node) {
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120 int field = fieldIndex.get(x.field());
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121 StructuredGraph graph = (StructuredGraph) x.graph();
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122 if (current instanceof LoadFieldNode) {
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123 assert fieldState[field] != null : field + ", " + x.field();
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124 x.replaceAtUsages(fieldState[field]);
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125 graph.removeFixed(x);
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126 } else if (current instanceof StoreFieldNode) {
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127 fieldState[field] = ((StoreFieldNode) x).value();
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128 graph.removeFixed(x);
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129 return field;
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130 }
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131 }
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132 }
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133 return -1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
134 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
135 };
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
136 }