Mercurial > hg > graal-jvmci-8
comparison graal/Compiler/src/com/sun/c1x/ir/LoadIndexed.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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2506:4a3bf8a5bf41 | 2507:9ec15d6914ca |
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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.sun.c1x.ir; | |
24 | |
25 import com.sun.c1x.debug.*; | |
26 import com.sun.c1x.value.*; | |
27 import com.sun.cri.ci.*; | |
28 import com.sun.cri.ri.*; | |
29 | |
30 /** | |
31 * The {@code LoadIndexed} instruction represents a read from an element of an array. | |
32 * | |
33 * @author Ben L. Titzer | |
34 */ | |
35 public final class LoadIndexed extends AccessIndexed { | |
36 | |
37 /** | |
38 * Creates a new LoadIndexed instruction. | |
39 * @param array the instruction producing the array | |
40 * @param index the instruction producing the index | |
41 * @param length the instruction producing the length | |
42 * @param elementType the element type | |
43 * @param stateBefore the state before executing this instruction | |
44 */ | |
45 public LoadIndexed(Value array, Value index, Value length, CiKind elementType, FrameState stateBefore) { | |
46 super(elementType.stackKind(), array, index, length, elementType, stateBefore); | |
47 } | |
48 | |
49 /** | |
50 * Gets the declared type of this instruction's result. | |
51 * @return the declared type | |
52 */ | |
53 @Override | |
54 public RiType declaredType() { | |
55 RiType arrayType = array().declaredType(); | |
56 if (arrayType == null) { | |
57 return null; | |
58 } | |
59 return arrayType.componentType(); | |
60 } | |
61 | |
62 /** | |
63 * Gets the exact type of this instruction's result. | |
64 * @return the exact type | |
65 */ | |
66 @Override | |
67 public RiType exactType() { | |
68 RiType declared = declaredType(); | |
69 return declared != null && declared.isResolved() ? declared.exactType() : null; | |
70 } | |
71 | |
72 @Override | |
73 public void accept(ValueVisitor v) { | |
74 v.visitLoadIndexed(this); | |
75 } | |
76 | |
77 @Override | |
78 public void print(LogStream out) { | |
79 out.print(array()).print('[').print(index()).print("] (").print(kind.typeChar).print(')'); | |
80 } | |
81 } |