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comparison graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/LoadField.java @ 2874:d90bf514d647

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Renamed packages.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 08 Jun 2011 08:59:54 +0200
parents graal/com.oracle.max.graal.compiler/src/com/sun/c1x/ir/LoadField.java@0341b6424579
children e7ba2bad98fb
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2873:810e2d253e00 2874:d90bf514d647
1 /*
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.max.graal.compiler.ir;
24
25 import com.oracle.max.graal.compiler.debug.*;
26 import com.oracle.max.graal.graph.*;
27 import com.sun.cri.ci.*;
28 import com.sun.cri.ri.*;
29
30 /**
31 * The {@code LoadField} instruction represents a read of a static or instance field.
32 */
33 public final class LoadField extends AccessField {
34
35 private static final int INPUT_COUNT = 0;
36 private static final int SUCCESSOR_COUNT = 0;
37
38 /**
39 * Creates a new LoadField instance.
40 * @param object the receiver object
41 * @param field the compiler interface field
42 * @param isStatic indicates if the field is static
43 * @param stateAfter the state after the field access
44 * @param graph
45 * @param isLoaded indicates if the class is loaded
46 */
47 public LoadField(Value object, RiField field, Graph graph) {
48 super(field.kind().stackKind(), object, field, INPUT_COUNT, SUCCESSOR_COUNT, graph);
49 }
50
51 /**
52 * Gets the declared type of the field being accessed.
53 * @return the declared type of the field being accessed.
54 */
55 @Override
56 public RiType declaredType() {
57 return field().type();
58 }
59
60 /**
61 * Gets the exact type of the field being accessed. If the field type is
62 * a primitive array or an instance class and the class is loaded and final,
63 * then the exact type is the same as the declared type. Otherwise it is {@code null}
64 * @return the exact type of the field if known; {@code null} otherwise
65 */
66 @Override
67 public RiType exactType() {
68 RiType declaredType = declaredType();
69 return declaredType.isResolved() ? declaredType.exactType() : null;
70 }
71
72 @Override
73 public void accept(ValueVisitor v) {
74 v.visitLoadField(this);
75 }
76
77 @Override
78 public void print(LogStream out) {
79 out.print(object()).
80 print(".").
81 print(field.name()).
82 print(" [field: ").
83 print(CiUtil.format("%h.%n:%t", field, false)).
84 print("]");
85 }
86
87 @Override
88 public boolean needsStateAfter() {
89 return false;
90 }
91
92 @Override
93 public Node copy(Graph into) {
94 LoadField x = new LoadField(null, field, into);
95 return x;
96 }
97 }