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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteNode.java @ 9474:85f83b7b3616

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Fix parameter type of NodeIntrinsic
author Christian Wimmer <christian.wimmer@oracle.com>
date Wed, 01 May 2013 09:09:33 -0700
parents 9ee5f3bfa755
children 038fa65cbd8d
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1 /*
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2 * Copyright (c) 2011, 2012, 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.graph.*;
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27 import com.oracle.graal.nodes.*;
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28 import com.oracle.graal.nodes.spi.*;
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29 import com.oracle.graal.nodes.type.*;
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30
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31 /**
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32 * Writes a given {@linkplain #value() value} a {@linkplain AccessNode memory location}.
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33 */
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34 public final class WriteNode extends AccessNode implements StateSplit, LIRLowerable, MemoryCheckpoint, Node.IterableNodeType {
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35
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36 @Input private ValueNode value;
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37 @Input(notDataflow = true) private FrameState stateAfter;
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38 private final WriteBarrierType barrierType;
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39
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40 /*
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41 * The types of write barriers attached to stores.
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42 */
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43 public enum WriteBarrierType {
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44 /*
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45 * Primitive stores which do not necessitate write barriers.
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46 */
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47 NONE,
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48 /*
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49 * Array object stores which necessitate precise write barriers.
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50 */
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51 PRECISE,
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52 /*
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53 * Field object stores which necessitate imprecise write barriers.
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54 */
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55 IMPRECISE
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56 }
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57
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58 public FrameState stateAfter() {
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59 return stateAfter;
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60 }
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61
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62 public void setStateAfter(FrameState x) {
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63 assert x == null || x.isAlive() : "frame state must be in a graph";
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64 updateUsages(stateAfter, x);
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65 stateAfter = x;
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66 }
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67
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68 public boolean hasSideEffect() {
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69 return true;
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70 }
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71
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72 public ValueNode value() {
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73 return value;
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74 }
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75
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76 public WriteBarrierType getWriteBarrierType() {
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77 return barrierType;
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78 }
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79
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80 public WriteNode(ValueNode object, ValueNode value, ValueNode location, WriteBarrierType barrierType) {
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81 super(object, location, StampFactory.forVoid());
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82 this.value = value;
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83 this.barrierType = barrierType;
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84 }
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85
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86 @Override
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87 public void generate(LIRGeneratorTool gen) {
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88 Value address = location().generateAddress(gen, gen.operand(object()));
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89 gen.emitStore(location().getValueKind(), address, gen.operand(value()), this);
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90 }
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91
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92 @NodeIntrinsic
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93 public static native void writeMemory(Object object, Object value, Object location, @ConstantNodeParameter WriteBarrierType barrierType);
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94
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95 @Override
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96 public Object[] getLocationIdentities() {
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97 return new Object[]{location().locationIdentity()};
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98 }
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99 }