Mercurial > hg > graal-jvmci-8
comparison graal/Compiler/src/com/sun/c1x/ir/NewInstance.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 NewInstance} instruction represents the allocation of an instance class object. | |
32 * | |
33 * @author Ben L. Titzer | |
34 */ | |
35 public final class NewInstance extends StateSplit { | |
36 | |
37 final RiType instanceClass; | |
38 public final int cpi; | |
39 public final RiConstantPool constantPool; | |
40 | |
41 /** | |
42 * Constructs a NewInstance instruction. | |
43 * @param type the class being allocated | |
44 * @param cpi the constant pool index | |
45 * @param stateBefore the state before executing this instruction | |
46 */ | |
47 public NewInstance(RiType type, int cpi, RiConstantPool constantPool, FrameState stateBefore) { | |
48 super(CiKind.Object, stateBefore); | |
49 this.instanceClass = type; | |
50 this.cpi = cpi; | |
51 this.constantPool = constantPool; | |
52 setFlag(Flag.NonNull); | |
53 setFlag(Flag.ResultIsUnique); | |
54 } | |
55 | |
56 /** | |
57 * Gets the instance class being allocated by this instruction. | |
58 * @return the instance class allocated | |
59 */ | |
60 public RiType instanceClass() { | |
61 return instanceClass; | |
62 } | |
63 | |
64 /** | |
65 * Checks whether this instruction can trap. | |
66 * @return {@code true}, assuming that allocation can cause OutOfMemory or other exceptions | |
67 */ | |
68 @Override | |
69 public boolean canTrap() { | |
70 return true; | |
71 } | |
72 | |
73 /** | |
74 * Gets the exact type produced by this instruction. For allocations of instance classes, this is | |
75 * always the class allocated. | |
76 * @return the exact type produced by this instruction | |
77 */ | |
78 @Override | |
79 public RiType exactType() { | |
80 return instanceClass; | |
81 } | |
82 | |
83 @Override | |
84 public void accept(ValueVisitor v) { | |
85 v.visitNewInstance(this); | |
86 } | |
87 | |
88 @Override | |
89 public void print(LogStream out) { | |
90 out.print("new instance ").print(CiUtil.toJavaName(instanceClass())); | |
91 } | |
92 } |