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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/CheckCastNode.java @ 19337:dd3e15cfe5b8

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Canonicalize CheckCastNode to unique concrete subtype on creation.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 12 Feb 2015 22:34:39 +0100
parents a0a760b0fb5f
children ba7bd60a8744
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1 /*
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2 * Copyright (c) 2009, 2014, 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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24
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25 import static com.oracle.graal.api.meta.DeoptimizationAction.*;
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26 import static com.oracle.graal.api.meta.DeoptimizationReason.*;
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27 import static com.oracle.graal.nodes.extended.BranchProbabilityNode.*;
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28
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29 import com.oracle.graal.api.code.*;
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30 import com.oracle.graal.api.meta.*;
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31 import com.oracle.graal.api.meta.ProfilingInfo.TriState;
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32 import com.oracle.graal.compiler.common.type.*;
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33 import com.oracle.graal.graph.*;
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34 import com.oracle.graal.graph.spi.*;
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35 import com.oracle.graal.nodeinfo.*;
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36 import com.oracle.graal.nodes.*;
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37 import com.oracle.graal.nodes.calc.*;
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38 import com.oracle.graal.nodes.spi.*;
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39 import com.oracle.graal.nodes.type.*;
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40
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41 /**
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42 * Implements a type check against a compile-time known type.
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43 */
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44 @NodeInfo
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45 public final class CheckCastNode extends FixedWithNextNode implements Canonicalizable, Simplifiable, Lowerable, Virtualizable, ValueProxy {
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46
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47 @Input protected ValueNode object;
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48 protected final ResolvedJavaType type;
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49 protected final JavaTypeProfile profile;
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50
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51 /**
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52 * Determines the exception thrown by this node if the check fails: {@link ClassCastException}
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53 * if false; {@link ArrayStoreException} if true.
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54 */
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55 protected final boolean forStoreCheck;
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56
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57 public CheckCastNode(ResolvedJavaType type, ValueNode object, JavaTypeProfile profile, boolean forStoreCheck) {
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58 super(StampFactory.declaredTrusted(type));
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59 assert type != null;
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60 this.type = type;
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61 this.object = object;
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62 this.profile = profile;
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63 this.forStoreCheck = forStoreCheck;
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64 }
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65
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66 public static ValueNode create(ResolvedJavaType inputType, ValueNode object, JavaTypeProfile profile, boolean forStoreCheck, Assumptions assumptions) {
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67 ResolvedJavaType type = inputType;
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68 ValueNode synonym = findSynonym(type, object);
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69 if (synonym != null) {
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70 return synonym;
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71 }
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72 if (assumptions != null) {
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73 ResolvedJavaType uniqueConcreteType = type.findUniqueConcreteSubtype();
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74 if (uniqueConcreteType != null) {
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75 assumptions.recordConcreteSubtype(type, uniqueConcreteType);
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76 type = uniqueConcreteType;
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77 }
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78 }
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79 return new CheckCastNode(type, object, profile, forStoreCheck);
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80 }
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81
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82 public boolean isForStoreCheck() {
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83 return forStoreCheck;
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84 }
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85
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86 /**
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87 * Lowers a {@link CheckCastNode} to a {@link GuardingPiNode}. That is:
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88 *
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89 * <pre>
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90 * 1: A a = ...
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91 * 2: B b = (B) a;
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92 * </pre>
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93 *
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94 * is lowered to:
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95 *
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96 * <pre>
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97 * 1: A a = ...
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98 * 2: B b = guardingPi(a == null || a instanceof B, a, stamp(B))
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99 * </pre>
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100 *
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101 * or if a is known to be non-null:
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102 *
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103 * <pre>
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104 * 1: A a = ...
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105 * 2: B b = guardingPi(a instanceof B, a, stamp(B, non-null))
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106 * </pre>
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107 *
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108 * Note: we use {@link Graph#addWithoutUnique} as opposed to {@link Graph#unique} for the new
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109 * {@link InstanceOfNode} to maintain the invariant checked by
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110 * {@code LoweringPhase.checkUsagesAreScheduled()}.
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111 */
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112 @Override
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113 public void lower(LoweringTool tool) {
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114 Stamp newStamp = StampFactory.declaredTrusted(type);
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115 if (stamp() instanceof ObjectStamp && object().stamp() instanceof ObjectStamp) {
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116 newStamp = ((ObjectStamp) object().stamp()).castTo((ObjectStamp) newStamp);
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117 }
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118 ValueNode condition;
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119 ValueNode theValue = object;
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120 if (newStamp instanceof IllegalStamp) {
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121 // This is a check cast that will always fail
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122 condition = LogicConstantNode.contradiction(graph());
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123 newStamp = StampFactory.declaredTrusted(type);
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124 } else if (StampTool.isPointerNonNull(object)) {
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parents: 18490
diff changeset
125 condition = graph().addWithoutUnique(new InstanceOfNode(type, object, profile));
11226
422b0e9b9aed removed obsolete checkcast snippets
Doug Simon <doug.simon@oracle.com>
parents: 10918
diff changeset
126 } else {
422b0e9b9aed removed obsolete checkcast snippets
Doug Simon <doug.simon@oracle.com>
parents: 10918
diff changeset
127 if (profile != null && profile.getNullSeen() == TriState.FALSE) {
18845
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
128 FixedGuardNode nullCheck = graph().add(new FixedGuardNode(graph().unique(new IsNullNode(object)), UnreachedCode, InvalidateReprofile, true));
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
129 PiNode nullGuarded = graph().unique(new PiNode(object, object().stamp().join(StampFactory.objectNonNull()), nullCheck));
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
130 InstanceOfNode typeTest = graph().addWithoutUnique(new InstanceOfNode(type, nullGuarded, profile));
12384
28d80a9260cd During CheckCast lowering, if null was never seen and a guard is created for the null case, the instanceof should be done on a non-null value.
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11881
diff changeset
131 graph().addBeforeFixed(this, nullCheck);
10729
2a4ad6ab345e disabled new lowering of checkcast until performance regression is fixed
Doug Simon <doug.simon@oracle.com>
parents: 10712
diff changeset
132 condition = typeTest;
16422
7f20dee1be60 ensure instanceof and null check stay dependent
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16252
diff changeset
133 /*
7f20dee1be60 ensure instanceof and null check stay dependent
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16252
diff changeset
134 * The PiNode is injecting an extra guard into the type so make sure it's used in
7f20dee1be60 ensure instanceof and null check stay dependent
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16252
diff changeset
135 * the GuardingPi, otherwise we can lose the null guard if the InstanceOf is
7f20dee1be60 ensure instanceof and null check stay dependent
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16252
diff changeset
136 * optimized away.
7f20dee1be60 ensure instanceof and null check stay dependent
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16252
diff changeset
137 */
7f20dee1be60 ensure instanceof and null check stay dependent
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16252
diff changeset
138 theValue = nullGuarded;
17276
ffb974bef674 moved Node valueNumber and valueEquals logic (optionally) to generated nodes
Doug Simon <doug.simon@oracle.com>
parents: 17154
diff changeset
139 newStamp = newStamp.join(StampFactory.objectNonNull());
12384
28d80a9260cd During CheckCast lowering, if null was never seen and a guard is created for the null case, the instanceof should be done on a non-null value.
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11881
diff changeset
140 nullCheck.lower(tool);
10729
2a4ad6ab345e disabled new lowering of checkcast until performance regression is fixed
Doug Simon <doug.simon@oracle.com>
parents: 10712
diff changeset
141 } else {
11226
422b0e9b9aed removed obsolete checkcast snippets
Doug Simon <doug.simon@oracle.com>
parents: 10918
diff changeset
142 // TODO (ds) replace with probability of null-seen when available
422b0e9b9aed removed obsolete checkcast snippets
Doug Simon <doug.simon@oracle.com>
parents: 10918
diff changeset
143 double shortCircuitProbability = NOT_FREQUENT_PROBABILITY;
18845
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
144 InstanceOfNode typeTest = graph().addWithoutUnique(new InstanceOfNode(type, object, profile));
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
145 condition = LogicNode.or(graph().unique(new IsNullNode(object)), typeTest, shortCircuitProbability);
10729
2a4ad6ab345e disabled new lowering of checkcast until performance regression is fixed
Doug Simon <doug.simon@oracle.com>
parents: 10712
diff changeset
146 }
10693
f8adf47cc05e checkcast is lowered to instanceof (GRAAL-248)
Doug Simon <doug.simon@oracle.com>
parents: 9786
diff changeset
147 }
18845
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
148 GuardingPiNode checkedObject = graph().add(new GuardingPiNode(theValue, condition, false, forStoreCheck ? ArrayStoreException : ClassCastException, InvalidateReprofile, newStamp));
11226
422b0e9b9aed removed obsolete checkcast snippets
Doug Simon <doug.simon@oracle.com>
parents: 10918
diff changeset
149 graph().replaceFixedWithFixed(this, checkedObject);
11798
2fbb9fd55dde made lowering recursive instead of iterative
Doug Simon <doug.simon@oracle.com>
parents: 11652
diff changeset
150 checkedObject.lower(tool);
5379
c862951e769d moved checkcast lowering into LoweringPhase and added -G:HIRLowerCheckcast option to enable it (disabled by default) as it is not yet stable
Doug Simon <doug.simon@oracle.com>
parents: 5372
diff changeset
151 }
c862951e769d moved checkcast lowering into LoweringPhase and added -G:HIRLowerCheckcast option to enable it (disabled by default) as it is not yet stable
Doug Simon <doug.simon@oracle.com>
parents: 5372
diff changeset
152
c862951e769d moved checkcast lowering into LoweringPhase and added -G:HIRLowerCheckcast option to enable it (disabled by default) as it is not yet stable
Doug Simon <doug.simon@oracle.com>
parents: 5372
diff changeset
153 @Override
5831
ed08c40d67de Add a alwaysNull property to ObjectStamp (Phi(null, a! A) get a "a A" stamp and not just "a -")
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5720
diff changeset
154 public boolean inferStamp() {
15754
45285c8eccbd Never use the current node's stamp in ValueNode.inferStamp overrides.
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 15260
diff changeset
155 if (object().stamp() instanceof ObjectStamp) {
18416
0c6504598b65 StampTool: add more methods to create object stamps to avoid using too many boolean arguments, add some javadoc, use them.
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 17450
diff changeset
156 ObjectStamp castStamp = (ObjectStamp) StampFactory.declaredTrusted(type);
15754
45285c8eccbd Never use the current node's stamp in ValueNode.inferStamp overrides.
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 15260
diff changeset
157 return updateStamp(((ObjectStamp) object().stamp()).castTo(castStamp));
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11226
diff changeset
158 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11226
diff changeset
159 return false;
5831
ed08c40d67de Add a alwaysNull property to ObjectStamp (Phi(null, a! A) get a "a A" stamp and not just "a -")
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5720
diff changeset
160 }
ed08c40d67de Add a alwaysNull property to ObjectStamp (Phi(null, a! A) get a "a A" stamp and not just "a -")
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5720
diff changeset
161
ed08c40d67de Add a alwaysNull property to ObjectStamp (Phi(null, a! A) get a "a A" stamp and not just "a -")
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5720
diff changeset
162 @Override
11880
9a747d8e0d0f broadened types in Canonicalizable interface so that it can be moved to the com.oracle.graal.graph project (GRAAL-506)
Doug Simon <doug.simon@oracle.com>
parents: 11839
diff changeset
163 public Node canonical(CanonicalizerTool tool) {
19239
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
164 ValueNode synonym = findSynonym(type, object());
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
165 if (synonym != null) {
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
166 return synonym;
16252
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
167 }
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
168
19250
8ab925a6f724 made Assumptions be part of a StructuredGraph
Doug Simon <doug.simon@oracle.com>
parents: 19239
diff changeset
169 Assumptions assumptions = graph().getAssumptions();
19306
a0a760b0fb5f pulled method evolution dependencies out of Assumptions and directly into StructuredGraph
Doug Simon <doug.simon@oracle.com>
parents: 19250
diff changeset
170 if (assumptions != null) {
16252
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
171 ResolvedJavaType exactType = type.findUniqueConcreteSubtype();
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
172 if (exactType != null && !exactType.equals(type)) {
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
173 // Propagate more precise type information to usages of the checkcast.
19250
8ab925a6f724 made Assumptions be part of a StructuredGraph
Doug Simon <doug.simon@oracle.com>
parents: 19239
diff changeset
174 assumptions.recordConcreteSubtype(type, exactType);
18845
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
175 return new CheckCastNode(exactType, object, profile, forStoreCheck);
16252
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
176 }
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
177 }
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
178
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
179 return this;
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
180 }
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
181
19239
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
182 private static ValueNode findSynonym(ResolvedJavaType type, ValueNode object) {
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
183 ResolvedJavaType objectType = StampTool.typeOrNull(object);
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
184 if (objectType != null && type.isAssignableFrom(objectType)) {
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
185 // we don't have to check for null types here because they will also pass the
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
186 // checkcast.
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
187 return object;
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
188 }
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
189
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
190 if (StampTool.isPointerAlwaysNull(object)) {
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
191 return object;
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
192 }
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
193 return null;
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
194 }
637ca4d37bca Extensions and fixes to inline and canonicalize during parsing.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 18998
diff changeset
195
16252
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
196 @Override
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
197 public void simplify(SimplifierTool tool) {
10918
3736fb3dcc56 checkcastnode: fix comment and scope in unittest
Bernhard Urban <bernhard.urban@jku.at>
parents: 10877
diff changeset
198 // if the previous node is also a checkcast, with a less precise and compatible type,
3736fb3dcc56 checkcastnode: fix comment and scope in unittest
Bernhard Urban <bernhard.urban@jku.at>
parents: 10877
diff changeset
199 // replace both with one checkcast checking the more specific type.
9543
f8a5f7f7d0bd CheckCastNode: eliminate the other way around
Bernhard Urban <bernhard.urban@jku.at>
parents: 9494
diff changeset
200 if (predecessor() instanceof CheckCastNode) {
f8a5f7f7d0bd CheckCastNode: eliminate the other way around
Bernhard Urban <bernhard.urban@jku.at>
parents: 9494
diff changeset
201 CheckCastNode ccn = (CheckCastNode) predecessor();
f8a5f7f7d0bd CheckCastNode: eliminate the other way around
Bernhard Urban <bernhard.urban@jku.at>
parents: 9494
diff changeset
202 if (ccn != null && ccn.type != null && ccn == object && ccn.forStoreCheck == forStoreCheck && ccn.type.isAssignableFrom(type)) {
9602
19c5a07c7843 Introduce a graph() method that returns a StructuredGraph, to make many explicit casts unnecessary
Christian Wimmer <christian.wimmer@oracle.com>
parents: 9543
diff changeset
203 StructuredGraph graph = ccn.graph();
18845
f57d86eb036f removed Node factory methods
Doug Simon <doug.simon@oracle.com>
parents: 18490
diff changeset
204 CheckCastNode newccn = graph.add(new CheckCastNode(type, ccn.object, ccn.profile, ccn.forStoreCheck));
9543
f8a5f7f7d0bd CheckCastNode: eliminate the other way around
Bernhard Urban <bernhard.urban@jku.at>
parents: 9494
diff changeset
205 graph.replaceFixedWithFixed(ccn, newccn);
16252
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
206 replaceAtUsages(newccn);
a762ddb12b43 change some node types from Canonicalizable to Simplifiable
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15831
diff changeset
207 graph.removeFixed(this);
5417
791eb4f85b29 Use exact type for check cast canonicalization if available
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5379
diff changeset
208 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
209 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
210 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
211
5370
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
212 public ValueNode object() {
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
213 return object;
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
214 }
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
215
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
216 /**
6648
7bf5a6c42db7 factored CheckCastDynamicNode out of CheckCastNode
Doug Simon <doug.simon@oracle.com>
parents: 6462
diff changeset
217 * Gets the type being cast to.
5370
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
218 */
6648
7bf5a6c42db7 factored CheckCastDynamicNode out of CheckCastNode
Doug Simon <doug.simon@oracle.com>
parents: 6462
diff changeset
219 public ResolvedJavaType type() {
7bf5a6c42db7 factored CheckCastDynamicNode out of CheckCastNode
Doug Simon <doug.simon@oracle.com>
parents: 6462
diff changeset
220 return type;
5370
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
221 }
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
222
5541
b4c406861c33 More renamings to drop Ri* prefix completely. Deleted graph.BitMap class and replaced with java.util.BitSet.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
223 public JavaTypeProfile profile() {
5370
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
224 return profile;
5229911d3970 removed TypeCheckNode
Doug Simon <doug.simon@oracle.com>
parents: 5369
diff changeset
225 }
6710
6db6881c1270 add Virtualizable and VirtualizerTool, refactor PEA to use it
Lukas Stadler <lukas.stadler@jku.at>
parents: 6648
diff changeset
226
6db6881c1270 add Virtualizable and VirtualizerTool, refactor PEA to use it
Lukas Stadler <lukas.stadler@jku.at>
parents: 6648
diff changeset
227 @Override
6db6881c1270 add Virtualizable and VirtualizerTool, refactor PEA to use it
Lukas Stadler <lukas.stadler@jku.at>
parents: 6648
diff changeset
228 public void virtualize(VirtualizerTool tool) {
7394
94f032472c28 changed PEA interface:
Lukas Stadler <lukas.stadler@jku.at>
parents: 7337
diff changeset
229 State state = tool.getObjectState(object);
94f032472c28 changed PEA interface:
Lukas Stadler <lukas.stadler@jku.at>
parents: 7337
diff changeset
230 if (state != null && state.getState() == EscapeState.Virtual) {
8961
1b5eeb50e690 PEA: fix virtualization of CheckCastNode (check type)
Lukas Stadler <lukas.stadler@jku.at>
parents: 7530
diff changeset
231 if (type.isAssignableFrom(state.getVirtualObject().type())) {
1b5eeb50e690 PEA: fix virtualization of CheckCastNode (check type)
Lukas Stadler <lukas.stadler@jku.at>
parents: 7530
diff changeset
232 tool.replaceWithVirtual(state.getVirtualObject());
1b5eeb50e690 PEA: fix virtualization of CheckCastNode (check type)
Lukas Stadler <lukas.stadler@jku.at>
parents: 7530
diff changeset
233 }
6710
6db6881c1270 add Virtualizable and VirtualizerTool, refactor PEA to use it
Lukas Stadler <lukas.stadler@jku.at>
parents: 6648
diff changeset
234 }
6db6881c1270 add Virtualizable and VirtualizerTool, refactor PEA to use it
Lukas Stadler <lukas.stadler@jku.at>
parents: 6648
diff changeset
235 }
10762
c483912aaf70 add ValueProxy interface and infrastructure
Lukas Stadler <lukas.stadler@jku.at>
parents: 10730
diff changeset
236
c483912aaf70 add ValueProxy interface and infrastructure
Lukas Stadler <lukas.stadler@jku.at>
parents: 10730
diff changeset
237 @Override
15009
e49f62425090 introduce non-ValueNode Proxy interface
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15002
diff changeset
238 public ValueNode getOriginalNode() {
10762
c483912aaf70 add ValueProxy interface and infrastructure
Lukas Stadler <lukas.stadler@jku.at>
parents: 10730
diff changeset
239 return object;
c483912aaf70 add ValueProxy interface and infrastructure
Lukas Stadler <lukas.stadler@jku.at>
parents: 10730
diff changeset
240 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
241 }