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comparison graal/Compiler/src/com/sun/c1x/ir/StackHandle.java @ 2507:9ec15d6914ca

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Pull over of compiler from maxine repository.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:43:22 +0200
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2506:4a3bf8a5bf41 2507:9ec15d6914ca
1 /*
2 * Copyright (c) 2010, 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.cri.bytecode.*;
27 import com.sun.cri.ci.*;
28
29 /**
30 * Instruction implementing the semantics of {@link Bytecodes#STACKHANDLE}.
31 *
32 * @author Doug Simon
33 */
34 public final class StackHandle extends Instruction {
35
36 /**
37 * The value that will be used to initialize the stack slot by allocated by this instruction.
38 */
39 private Value value;
40
41 /**
42 * Creates a new LoadStackAddress instance.
43 */
44 public StackHandle(Value value) {
45 super(CiKind.Word);
46 setFlag(Flag.NonNull);
47 this.value = value;
48 }
49
50 @Override
51 public void accept(ValueVisitor v) {
52 v.visitAllocateStackHandle(this);
53 }
54
55 @Override
56 public void inputValuesDo(ValueClosure closure) {
57 value = closure.apply(value);
58 }
59
60 /**
61 * Gets the instruction that produced the size argument.
62 */
63 public Value value() {
64 return value;
65 }
66
67 @Override
68 public void print(LogStream out) {
69 out.print("stackHandle(").print(value).print(")");
70 }
71 }