Mercurial > hg > graal-compiler
comparison graal/GraalCompiler/src/com/sun/c1x/ir/CheckCast.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/CheckCast.java@9ec15d6914ca |
children | f1bc67c2d453 |
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2508:fea94949e0a2 | 2509:16b9a8b5ad39 |
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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.util.*; | |
27 import com.sun.c1x.value.*; | |
28 import com.sun.cri.bytecode.*; | |
29 import com.sun.cri.ci.*; | |
30 import com.sun.cri.ri.*; | |
31 | |
32 /** | |
33 * The {@code CheckCast} instruction represents a {@link Bytecodes#CHECKCAST}. | |
34 * | |
35 * @author Ben L. Titzer | |
36 */ | |
37 public final class CheckCast extends TypeCheck { | |
38 | |
39 /** | |
40 * Creates a new CheckCast instruction. | |
41 * @param targetClass the class being cast to | |
42 * @param object the instruction producing the object | |
43 * @param stateBefore the state before the cast | |
44 */ | |
45 public CheckCast(RiType targetClass, Value targetClassInstruction, Value object, FrameState stateBefore) { | |
46 super(targetClass, targetClassInstruction, object, CiKind.Object, stateBefore); | |
47 initFlag(Flag.NonNull, object.isNonNull()); | |
48 } | |
49 | |
50 /** | |
51 * Gets the declared type of the result of this instruction. | |
52 * @return the declared type of the result | |
53 */ | |
54 @Override | |
55 public RiType declaredType() { | |
56 return targetClass; | |
57 } | |
58 | |
59 /** | |
60 * Gets the exact type of the result of this instruction. | |
61 * @return the exact type of the result | |
62 */ | |
63 @Override | |
64 public RiType exactType() { | |
65 return targetClass.isResolved() ? targetClass.exactType() : null; | |
66 } | |
67 | |
68 @Override | |
69 public void accept(ValueVisitor v) { | |
70 v.visitCheckCast(this); | |
71 } | |
72 | |
73 @Override | |
74 public int valueNumber() { | |
75 return targetClass.isResolved() ? Util.hash1(Bytecodes.CHECKCAST, object) : 0; | |
76 } | |
77 | |
78 @Override | |
79 public boolean valueEqual(Instruction i) { | |
80 if (i instanceof CheckCast) { | |
81 CheckCast o = (CheckCast) i; | |
82 return targetClass == o.targetClass && object == o.object; | |
83 } | |
84 return false; | |
85 } | |
86 | |
87 @Override | |
88 public void print(LogStream out) { | |
89 out.print("checkcast("). | |
90 print(object()). | |
91 print(","). | |
92 print(targetClassInstruction()). | |
93 print(") "). | |
94 print(CiUtil.toJavaName(targetClass())); | |
95 } | |
96 } |