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comparison graal/Compiler/src/com/sun/c1x/ir/StoreRegister.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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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.cri.ci.*;
27
28 /**
29 * The {@code StoreRegister} instruction represents a write of a physical register.
30 * This instruction is part of the HIR support for low-level operations, such as safepoints,
31 * stack banging, etc, and does not correspond to a Java operation.
32 *
33 * @author Ben L. Titzer
34 */
35 public final class StoreRegister extends Instruction {
36
37 public final CiRegister register;
38 Value value;
39
40 /**
41 * Creates a new StoreReigster instance.
42 * @param kind the kind of value stored to the register
43 * @param register the register to store
44 * @param value the value to write
45 */
46 public StoreRegister(CiKind kind, CiRegister register, Value value) {
47 super(kind);
48 this.register = register;
49 this.value = value;
50 setFlag(Flag.LiveStore);
51 }
52
53 @Override
54 public void accept(ValueVisitor v) {
55 v.visitStoreRegister(this);
56 }
57
58 public Value value() {
59 return value;
60 }
61
62 @Override
63 public void inputValuesDo(ValueClosure closure) {
64 value = closure.apply(value);
65 }
66
67 @Override
68 public void print(LogStream out) {
69 out.print(register.toString()).print(" := ").print(value());
70 }
71 }