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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnboxNode.java @ 17328:c9bb0da795d4

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Backed out of changeset 17322:655f3e6b467b
author Doug Simon <doug.simon@oracle.com>
date Fri, 03 Oct 2014 14:19:58 +0200
parents 655f3e6b467b
children 45b45f902bed
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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.nodes.extended;
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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.compiler.common.type.*;
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27 import com.oracle.graal.graph.spi.*;
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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.calc.*;
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31 import com.oracle.graal.nodes.spi.*;
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32
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33 @NodeInfo
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34 public class UnboxNode extends UnaryNode implements Virtualizable, Lowerable {
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35
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36 protected final Kind boxingKind;
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37
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38 public static UnboxNode create(ValueNode value, Kind boxingKind) {
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39 return USE_GENERATED_NODES ? new UnboxNodeGen(value, boxingKind) : new UnboxNode(value, boxingKind);
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40 }
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41
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42 protected UnboxNode(ValueNode value, Kind boxingKind) {
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43 super(StampFactory.forKind(boxingKind.getStackKind()), value);
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44 this.boxingKind = boxingKind;
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45 }
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46
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47 public Kind getBoxingKind() {
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48 return boxingKind;
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49 }
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50
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51 @Override
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52 public void lower(LoweringTool tool) {
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53 tool.getLowerer().lower(this, tool);
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54 }
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55
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56 @Override
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57 public void virtualize(VirtualizerTool tool) {
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58 State state = tool.getObjectState(getValue());
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59 if (state != null && state.getState() == EscapeState.Virtual) {
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60 ResolvedJavaType objectType = state.getVirtualObject().type();
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61 ResolvedJavaType expectedType = tool.getMetaAccessProvider().lookupJavaType(boxingKind.toBoxedJavaClass());
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62 if (objectType.equals(expectedType)) {
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63 tool.replaceWithValue(state.getEntry(0));
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64 }
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65 }
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66 }
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67
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68 @Override
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69 public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
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70 if (forValue.isConstant()) {
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71 Constant constant = forValue.asConstant();
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72 Constant unboxed = tool.getConstantReflection().unboxPrimitive(constant);
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73 if (unboxed != null && unboxed.getKind() == boxingKind) {
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74 return ConstantNode.forConstant(unboxed, tool.getMetaAccess());
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75 }
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76 } else if (forValue instanceof BoxNode) {
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77 BoxNode box = (BoxNode) forValue;
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78 if (boxingKind == box.getBoxingKind()) {
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79 return box.getValue();
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80 }
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81 }
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82 return this;
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83 }
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84
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85 @NodeIntrinsic
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86 public static native boolean unbox(Boolean value, @ConstantNodeParameter Kind kind);
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87
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88 @NodeIntrinsic
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89 public static native byte unbox(Byte value, @ConstantNodeParameter Kind kind);
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90
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91 @NodeIntrinsic
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92 public static native char unbox(Character value, @ConstantNodeParameter Kind kind);
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93
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94 @NodeIntrinsic
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95 public static native double unbox(Double value, @ConstantNodeParameter Kind kind);
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96
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97 @NodeIntrinsic
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98 public static native float unbox(Float value, @ConstantNodeParameter Kind kind);
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99
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100 @NodeIntrinsic
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101 public static native int unbox(Integer value, @ConstantNodeParameter Kind kind);
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102
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103 @NodeIntrinsic
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104 public static native long unbox(Long value, @ConstantNodeParameter Kind kind);
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105
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106 @NodeIntrinsic
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107 public static native short unbox(Short value, @ConstantNodeParameter Kind kind);
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108 }