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annotate graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/BasicArrayCopyNode.java @ 19403:61d3cb8e1280

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Add generic parameter to NodeClass. Change Graph#getNodes(Class) to Graph#getNodes(NodeClass).
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Mon, 16 Feb 2015 17:47:43 +0100
parents 7e2c87dae93e
children 880717e44675
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1 /*
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2 * Copyright (c) 2013, 2014, 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.replacements.nodes;
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24
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.debug.*;
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.nodeinfo.*;
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29 import com.oracle.graal.nodes.*;
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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.nodes.virtual.*;
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33
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34 @NodeInfo
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35 public abstract class BasicArrayCopyNode extends MacroStateSplitNode implements Virtualizable {
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36
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37 public static final NodeClass<BasicArrayCopyNode> TYPE = NodeClass.get(BasicArrayCopyNode.class);
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38
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39 public BasicArrayCopyNode(NodeClass<?> c, Invoke invoke) {
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40 super(c, invoke);
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41 }
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42
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43 protected ValueNode getSource() {
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44 return arguments.get(0);
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45 }
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46
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47 protected ValueNode getSourcePosition() {
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48 return arguments.get(1);
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49 }
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50
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51 protected ValueNode getDestination() {
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52 return arguments.get(2);
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53 }
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54
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55 protected ValueNode getDestinationPosition() {
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56 return arguments.get(3);
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57 }
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58
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59 protected ValueNode getLength() {
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60 return arguments.get(4);
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61 }
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62
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63 private static boolean checkBounds(int position, int length, VirtualObjectNode virtualObject) {
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64 return position >= 0 && position + length <= virtualObject.entryCount();
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65 }
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66
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67 private static boolean checkEntryTypes(int srcPos, int length, State srcState, ResolvedJavaType destComponentType, VirtualizerTool tool) {
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68 if (destComponentType.getKind() == Kind.Object) {
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69 for (int i = 0; i < length; i++) {
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70 ValueNode entry = srcState.getEntry(srcPos + i);
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71 State state = tool.getObjectState(entry);
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72 ResolvedJavaType type;
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73 if (state != null) {
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74 if (state.getState() == EscapeState.Virtual) {
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75 type = state.getVirtualObject().type();
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76 } else {
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77 type = StampTool.typeOrNull(state.getMaterializedValue());
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78 }
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79 } else {
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80 type = StampTool.typeOrNull(entry);
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81 }
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82 if (type == null || !destComponentType.isAssignableFrom(type)) {
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83 return false;
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84 }
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85 }
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86 }
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87 return true;
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88 }
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89
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90 @Override
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91 public void virtualize(VirtualizerTool tool) {
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92 if (getSourcePosition().isConstant() && getDestinationPosition().isConstant() && getLength().isConstant()) {
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93 int srcPos = getSourcePosition().asJavaConstant().asInt();
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94 int destPos = getDestinationPosition().asJavaConstant().asInt();
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95 int length = getLength().asJavaConstant().asInt();
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96 State srcState = tool.getObjectState(getSource());
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97 State destState = tool.getObjectState(getDestination());
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98
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99 if (srcState != null && srcState.getState() == EscapeState.Virtual && destState != null && destState.getState() == EscapeState.Virtual) {
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100 VirtualObjectNode srcVirtual = srcState.getVirtualObject();
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101 VirtualObjectNode destVirtual = destState.getVirtualObject();
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102 if (!(srcVirtual instanceof VirtualArrayNode) || !(destVirtual instanceof VirtualArrayNode)) {
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103 return;
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104 }
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105 if (((VirtualArrayNode) srcVirtual).componentType().getKind() != Kind.Object || ((VirtualArrayNode) destVirtual).componentType().getKind() != Kind.Object) {
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106 return;
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107 }
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108 if (length < 0 || !checkBounds(srcPos, length, srcVirtual) || !checkBounds(destPos, length, destVirtual)) {
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109 return;
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110 }
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111 if (!checkEntryTypes(srcPos, length, srcState, destVirtual.type().getComponentType(), tool)) {
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112 return;
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113 }
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114 for (int i = 0; i < length; i++) {
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115 tool.setVirtualEntry(destState, destPos + i, srcState.getEntry(srcPos + i), false);
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116 }
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117 tool.delete();
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118 if (Debug.isLogEnabled()) {
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119 Debug.log("virtualized arraycopyf(%s, %d, %s, %d, %d)", getSource(), srcPos, getDestination(), destPos, length);
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120 }
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121 }
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122 }
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123 }
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124
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125 }