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comparison graal/Compiler/src/com/sun/c1x/ir/UnsafeRawOp.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, 2010, 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.cri.ci.*;
26
27 /**
28 * The {@code UnsafeRawOp} class is the base class of all unsafe raw operations.
29 *
30 * @author Ben L. Titzer
31 */
32 public abstract class UnsafeRawOp extends UnsafeOp {
33
34 Value base;
35 Value index;
36 int log2Scale;
37
38 /**
39 * Creates a new UnsafeRawOp instruction.
40 * @param opKind the kind of the operation
41 * @param addr the instruction generating the base address (a long)
42 * @param isStore {@code true} if this operation is a store
43 */
44 public UnsafeRawOp(CiKind opKind, Value addr, boolean isStore) {
45 super(opKind, isStore);
46 assert addr == null || addr.kind == CiKind.Long;
47 base = addr;
48 }
49
50 /**
51 * Creates a new UnsafeRawOp instruction.
52 * @param opKind the kind of the operation
53 * @param addr the instruction generating the base address (a long)
54 * @param index the instruction generating the index
55 * @param log2scale the log base 2 of the scaling factor
56 * @param isStore {@code true} if this operation is a store
57 */
58 public UnsafeRawOp(CiKind opKind, Value addr, Value index, int log2scale, boolean isStore) {
59 this(opKind, addr, isStore);
60 this.base = addr;
61 this.index = index;
62 this.log2Scale = log2scale;
63 }
64
65 /**
66 * Gets the instruction generating the base address for this operation.
67 * @return the instruction generating the base
68 */
69 public Value base() {
70 return base;
71 }
72
73 /**
74 * Gets the instruction generating the index for this operation.
75 * @return the instruction generating the index
76 */
77 public Value index() {
78 return index;
79 }
80
81 /**
82 * Checks whether this instruction has an index.
83 * @return {@code true} if this instruction has an index
84 */
85 public boolean hasIndex() {
86 return index != null;
87 }
88
89 /**
90 * Gets the log base 2 of the scaling factor for the index of this instruction.
91 * @return the log base 2 of the scaling factor
92 */
93 public int log2Scale() {
94 return log2Scale;
95 }
96
97 /**
98 * Sets the instruction that generates the base address for this instruction.
99 * @param base the instruction generating the base address
100 */
101 public void setBase(Value base) {
102 this.base = base;
103 }
104
105 /**
106 * Sets the instruction generating the base address for this instruction.
107 * @param index the instruction generating the index
108 */
109 public void setIndex(Value index) {
110 this.index = index;
111 }
112
113 /**
114 * Sets the scaling factor for the index of this instruction.
115 * @param log2scale the log base 2 of the scaling factor for this instruction
116 */
117 public void setLog2Scale(int log2scale) {
118 this.log2Scale = log2scale;
119 }
120
121 /**
122 * Iterates over the input values to this instruction.
123 * @param closure the closure to apply
124 */
125 @Override
126 public void inputValuesDo(ValueClosure closure) {
127 super.inputValuesDo(closure);
128 base = closure.apply(base);
129 if (index != null) {
130 index = closure.apply(index);
131 }
132 }
133 }