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comparison graal/GraalCompiler/src/com/sun/c1x/ir/StoreIndexed.java @ 2509:16b9a8b5ad39

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Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/ir/StoreIndexed.java@9ec15d6914ca
children fa3bda50cbfd
comparison
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2508:fea94949e0a2 2509:16b9a8b5ad39
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 static com.sun.c1x.ir.Value.Flag.*;
26
27 import com.sun.c1x.debug.*;
28 import com.sun.c1x.value.*;
29 import com.sun.cri.ci.*;
30
31 /**
32 * The {@code StoreIndexed} instruction represents a write to an array element.
33 *
34 * @author Ben L. Titzer
35 */
36 public final class StoreIndexed extends AccessIndexed {
37
38 /**
39 * The value to store.
40 */
41 Value value;
42
43 /**
44 * Creates a new StoreIndexed instruction.
45 * @param array the instruction producing the array
46 * @param index the instruction producing the index
47 * @param length the instruction producing the length
48 * @param elementType the element type
49 * @param value the value to store into the array
50 * @param stateBefore the state before executing this instruction
51 */
52 public StoreIndexed(Value array, Value index, Value length, CiKind elementType, Value value, FrameState stateBefore) {
53 super(CiKind.Void, array, index, length, elementType, stateBefore);
54 this.value = value;
55 setFlag(Flag.LiveStore);
56 if (elementType != CiKind.Object) {
57 setFlag(Flag.NoWriteBarrier);
58 }
59 }
60
61 /**
62 * Gets the instruction that produces the value that is to be stored into the array.
63 * @return the value to write into the array
64 */
65 public Value value() {
66 return value;
67 }
68
69 /**
70 * Checks if this instruction needs a write barrier.
71 * @return {@code true} if this instruction needs a write barrier
72 */
73 public boolean needsWriteBarrier() {
74 return !checkFlag(Flag.NoWriteBarrier);
75 }
76
77 /**
78 * Checks if this instruction needs a store check.
79 * @return {@code true} if this instruction needs a store check
80 */
81 public boolean needsStoreCheck() {
82 return !checkFlag(Flag.NoStoreCheck);
83 }
84
85 public void eliminateStoreCheck() {
86 clearRuntimeCheck(NoStoreCheck);
87 }
88
89 /**
90 * Checks whether this instruction can cause a trap.
91 * @return {@code true} if this instruction can cause a trap
92 */
93 @Override
94 public boolean canTrap() {
95 return super.canTrap() || needsStoreCheck();
96 }
97
98 @Override
99 public void inputValuesDo(ValueClosure closure) {
100 super.inputValuesDo(closure);
101 value = closure.apply(value);
102 }
103
104 @Override
105 public void accept(ValueVisitor v) {
106 v.visitStoreIndexed(this);
107 }
108
109 @Override
110 public void print(LogStream out) {
111 out.print(array()).print('[').print(index()).print("] := ").print(value()).print(" (").print(kind.typeChar).print(')');
112 }
113 }