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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/UnsafeArrayCopyNode.java @ 10438:6a847d44d4ef

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Delay write barrier addition for arraycopy.
author Roland Schatz <roland.schatz@oracle.com>
date Thu, 20 Jun 2013 16:59:58 +0200
parents 8c8285e345cc
children 4109190a0da5
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot.replacements;
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24
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25 import static com.oracle.graal.api.meta.LocationIdentity.*;
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26
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27 import com.oracle.graal.api.meta.*;
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28 import com.oracle.graal.nodes.*;
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29 import com.oracle.graal.nodes.extended.*;
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30 import com.oracle.graal.nodes.spi.*;
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31 import com.oracle.graal.nodes.type.*;
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32 import com.oracle.graal.replacements.SnippetTemplate.Arguments;
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33
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34 public final class UnsafeArrayCopyNode extends ArrayRangeWriteNode implements Lowerable, MemoryCheckpoint.Single {
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35
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36 @Input private ValueNode src;
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37 @Input private ValueNode srcPos;
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38 @Input private ValueNode dest;
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39 @Input private ValueNode destPos;
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40 @Input private ValueNode length;
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41 @Input private ValueNode layoutHelper;
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42
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43 private Kind elementKind;
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44
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45 private UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper, Kind elementKind) {
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46 super(StampFactory.forVoid());
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47 assert layoutHelper == null || elementKind == null;
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48 this.src = src;
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49 this.srcPos = srcPos;
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50 this.dest = dest;
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51 this.destPos = destPos;
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52 this.length = length;
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53 this.layoutHelper = layoutHelper;
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54 this.elementKind = elementKind;
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55 }
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56
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57 private UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, Kind elementKind) {
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58 this(src, srcPos, dest, destPos, length, null, elementKind);
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59 }
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60
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61 private UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper) {
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62 this(src, srcPos, dest, destPos, length, layoutHelper, null);
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63 }
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64
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65 @Override
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66 public ValueNode getArray() {
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67 return dest;
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68 }
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69
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70 @Override
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71 public ValueNode getIndex() {
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72 return destPos;
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73 }
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74
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75 @Override
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76 public ValueNode getLength() {
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77 return length;
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78 }
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79
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80 @Override
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81 public boolean isObjectArray() {
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82 return elementKind == Kind.Object;
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83 }
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84
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85 public Kind getElementKind() {
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86 return elementKind;
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87 }
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88
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89 @Override
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90 public void lower(LoweringTool tool, LoweringType loweringType) {
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91 if (loweringType == LoweringType.AFTER_GUARDS) {
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92 UnsafeArrayCopySnippets.Templates templates = tool.getReplacements().getSnippetTemplateCache(UnsafeArrayCopySnippets.Templates.class);
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93 templates.lower(this);
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94 }
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95 }
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96
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97 public void addSnippetArguments(Arguments args) {
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98 args.add("src", src);
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99 args.add("srcPos", srcPos);
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100 args.add("dest", dest);
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101 args.add("destPos", destPos);
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102 args.add("length", length);
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103 if (layoutHelper != null) {
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104 args.add("layoutHelper", layoutHelper);
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105 }
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106 }
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107
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108 @Override
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109 public LocationIdentity getLocationIdentity() {
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110 if (elementKind == null) {
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111 return ANY_LOCATION;
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112 } else {
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113 return NamedLocationIdentity.getArrayLocation(elementKind);
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114 }
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115 }
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116
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117 @NodeIntrinsic
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118 public static native void arraycopy(Object src, int srcPos, Object dest, int destPos, int length, @ConstantNodeParameter Kind elementKind);
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119
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120 @NodeIntrinsic
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121 public static native void arraycopyPrimitive(Object src, int srcPos, Object dest, int destPos, int length, int layoutHelper);
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122 }