Mercurial > hg > graal-compiler

annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeCastNode.java @ 6539:2463eb24b644

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
author Christian Wimmer <christian.wimmer@oracle.com>
date Tue, 09 Oct 2012 15:23:38 -0700
parents fb66841a0994
children 2e577202843c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
1 /*
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
4 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
7 * published by the Free Software Foundation.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
8 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
13 * accompanied this code).
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
14 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
18 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
21 * questions.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
22 */
5060
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
23 package com.oracle.graal.nodes.extended;
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
24
5507
dc71b06d09f8 Moving classes from cri.ri to api.meta.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5443
diff changeset
25 import com.oracle.graal.api.meta.*;
5060
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
26 import com.oracle.graal.nodes.*;
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
27 import com.oracle.graal.nodes.calc.*;
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
28 import com.oracle.graal.nodes.spi.*;
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
29 import com.oracle.graal.nodes.type.*;
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
30
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
31 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
32 * The {@code UnsafeCastNode} produces the same value as its input, but with a different type.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
33 */
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
34 public final class UnsafeCastNode extends FloatingNode implements Canonicalizable, LIRLowerable {
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
35
5073
2db1ad9dd385 rename PiNode.value to PiNode.object and UnsafeCastNode.x to UnsafeCastNode.object
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
36 @Input private ValueNode object;
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: 5520
diff changeset
37 private ResolvedJavaType toType;
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
38
5073
2db1ad9dd385 rename PiNode.value to PiNode.object and UnsafeCastNode.x to UnsafeCastNode.object
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
39 public ValueNode object() {
2db1ad9dd385 rename PiNode.value to PiNode.object and UnsafeCastNode.x to UnsafeCastNode.object
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
40 return object;
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
41 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
42
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
43 public UnsafeCastNode(ValueNode object, ResolvedJavaType toType, boolean exactType, boolean nonNull) {
6539
2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6458
diff changeset
44 super(toType.getKind().isObject() ? new ObjectStamp(toType, exactType, nonNull, false) : StampFactory.forKind(toType.getKind()));
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
45 this.object = object;
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
46 this.toType = toType;
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
47 }
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
48
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: 5520
diff changeset
49 public UnsafeCastNode(ValueNode object, ResolvedJavaType toType) {
6539
2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6458
diff changeset
50 super(toType.getKind().isObject() ? StampFactory.declared(toType, object.stamp().nonNull()) : StampFactory.forKind(toType.getKind()));
5073
2db1ad9dd385 rename PiNode.value to PiNode.object and UnsafeCastNode.x to UnsafeCastNode.object
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
51 this.object = object;
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
52 this.toType = toType;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
53 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
54
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
55 @Override
4309
4a609a685fa4 changes to Node structures:
Lukas Stadler <lukas.stadler@jku.at>
parents: 4199
diff changeset
56 public ValueNode canonical(CanonicalizerTool tool) {
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
57 if (object != null) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
58 if (object.kind().isObject()) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
59 if (object.objectStamp().type() != null && object.objectStamp().type().isSubtypeOf(toType)) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
60 if (!isNarrower(objectStamp(), object.objectStamp())) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
61 return object;
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
62 }
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
63 }
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
64 } else if (object.kind() == kind()) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
65 // Removes redundant casts introduced by WordTypeRewriterPhase
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
66 return object;
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
67 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
68 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
69 return this;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
70 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
71
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
72 /**
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
73 * Determines if one object stamp is narrower than another in terms of nullness and exactness.
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
74 *
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
75 * @return true if x is definitely non-null and y's nullness is unknown OR
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
76 * x's type is exact and the exactness of y's type is unknown
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
77 */
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
78 private static boolean isNarrower(ObjectStamp x, ObjectStamp y) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
79 if (x.nonNull() && !y.nonNull()) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
80 return true;
5563
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
81 }
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
82 if (x.isExactType() && !y.isExactType()) {
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
83 return true;
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
84 }
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
85 return false;
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
86 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
87
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
88 @NodeIntrinsic
6458
fb66841a0994 made all @NodeIntrinsic annotated methods be native (this is a requirement now enforced during snippet intrinsification)
Doug Simon <doug.simon@oracle.com>
parents: 5831
diff changeset
89 public static native <T> T cast(Object object, @ConstantNodeParameter Class<?> toType);
5563
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
90
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
91 @NodeIntrinsic
6458
fb66841a0994 made all @NodeIntrinsic annotated methods be native (this is a requirement now enforced during snippet intrinsification)
Doug Simon <doug.simon@oracle.com>
parents: 5831
diff changeset
92 public static native <T> T cast(Object object, @ConstantNodeParameter Class<?> toType, @ConstantNodeParameter boolean exactType, @ConstantNodeParameter boolean nonNull);
5683
0ca242de9383 improved type stamp for value flowing out of a lowered NEW bytecode instruction
Doug Simon <doug.simon@oracle.com>
parents: 5666
diff changeset
93
5563
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
94 @Override
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
95 public void generate(LIRGeneratorTool generator) {
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
96 Value result = generator.newVariable(kind());
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
97 generator.emitMove(generator.operand(object), result);
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
98 generator.setResult(this, result);
6a2671066204 added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
Doug Simon <doug.simon@oracle.com>
parents: 5541
diff changeset
99 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
100 }