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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/NewMultiArrayStubCall.java @ 6431:2e376f8ea4e2

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added snippet for lowering NewMultiArrayNodes
author Doug Simon <doug.simon@oracle.com>
date Tue, 25 Sep 2012 09:09:19 +0200
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children fb66841a0994
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6431
2e376f8ea4e2 added snippet for lowering NewMultiArrayNodes
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1 /*
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2 * Copyright (c) 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.hotspot.nodes;
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24
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25 import static com.oracle.graal.hotspot.target.amd64.AMD64NewMultiArrayStubCallOp.*;
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26
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27 import com.oracle.graal.api.code.*;
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.compiler.gen.*;
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30 import com.oracle.graal.compiler.target.*;
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31 import com.oracle.graal.hotspot.*;
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32 import com.oracle.graal.hotspot.target.amd64.*;
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33 import com.oracle.graal.lir.*;
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34 import com.oracle.graal.nodes.*;
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35 import com.oracle.graal.nodes.type.*;
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36 import com.oracle.graal.snippets.*;
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37
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38 /**
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39 * Node implementing a call to HotSpot's {@code new_multi_array} stub.
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40 */
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41 public class NewMultiArrayStubCall extends FixedWithNextNode implements LIRGenLowerable {
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42
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43 private static final Stamp defaultStamp = StampFactory.objectNonNull();
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44
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45 @Input private final ValueNode hub;
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46 @Input private final ValueNode dims;
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47 private final int rank;
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48
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49 public NewMultiArrayStubCall(ValueNode hub, int rank, ValueNode dims) {
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50 super(defaultStamp);
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51 this.hub = hub;
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52 this.rank = rank;
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53 this.dims = dims;
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54 }
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55
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56 @Override
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57 public boolean inferStamp() {
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58 if (stamp() == defaultStamp && hub.isConstant()) {
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59 HotSpotKlassOop klassOop = (HotSpotKlassOop) this.hub.asConstant().asObject();
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60 updateStamp(StampFactory.exactNonNull(klassOop.type));
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61 return true;
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62 }
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63 return false;
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64 }
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65
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66 @Override
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67 public void generate(LIRGenerator gen) {
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68 RegisterValue hubFixed = HUB.asValue(Kind.Object);
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69 RegisterValue resultFixed = RESULT.asValue(Kind.Object);
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70 RegisterValue rankFixed = RANK.asValue(Kind.Int);
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71 RegisterValue dimsFixed = DIMS.asValue(gen.target().wordKind);
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72 gen.emitMove(gen.operand(hub), hubFixed);
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73 gen.emitMove(gen.operand(dims), dimsFixed);
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74 gen.emitMove(Constant.forInt(rank), rankFixed);
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75 LIRFrameState state = gen.state();
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76 gen.append(new AMD64NewMultiArrayStubCallOp(resultFixed, hubFixed, rankFixed, dimsFixed, state));
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77 Variable result = gen.emitMove(resultFixed);
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78 gen.setResult(this, result);
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79 }
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80
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81 @SuppressWarnings("unused")
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82 @NodeIntrinsic
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83 public static Object call(Object hub, @ConstantNodeParameter int rank, Word dims) {
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84 throw new UnsupportedOperationException();
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85 }
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86 }