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annotate graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/MacroStateSplitNode.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.replacements.nodes;
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24
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25 import com.oracle.graal.api.code.*;
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26 import com.oracle.graal.api.meta.*;
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27 import com.oracle.graal.compiler.common.*;
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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.extended.*;
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31 import com.oracle.graal.nodes.java.*;
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32
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33 /**
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34 * This is an extension of {@link MacroNode} that is a {@link StateSplit} and a
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35 * {@link MemoryCheckpoint}.
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36 */
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37 @NodeInfo
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38 public class MacroStateSplitNode extends MacroNode implements StateSplit, MemoryCheckpoint.Single {
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39
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40 @OptionalInput(InputType.State) protected FrameState stateAfter;
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41
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42 public static MacroStateSplitNode create(Invoke invoke) {
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43 return USE_GENERATED_NODES ? new MacroStateSplitNodeGen(invoke) : new MacroStateSplitNode(invoke);
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44 }
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45
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46 protected MacroStateSplitNode(Invoke invoke) {
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47 super(invoke);
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48 this.stateAfter = invoke.stateAfter();
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49 }
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50
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51 @Override
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52 public FrameState stateAfter() {
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53 return stateAfter;
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54 }
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55
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56 public void setStateAfter(FrameState x) {
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57 assert x == null || x.isAlive() : "frame state must be in a graph";
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58 updateUsages(stateAfter, x);
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59 stateAfter = x;
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60 }
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61
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62 public boolean hasSideEffect() {
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63 return true;
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64 }
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65
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66 public LocationIdentity getLocationIdentity() {
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67 return LocationIdentity.ANY_LOCATION;
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68 }
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69
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70 protected void replaceSnippetInvokes(StructuredGraph snippetGraph) {
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71 for (MethodCallTargetNode call : snippetGraph.getNodes(MethodCallTargetNode.class)) {
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72 Invoke invoke = call.invoke();
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73 if (!call.targetMethod().equals(getTargetMethod())) {
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74 throw new GraalInternalError("unexpected invoke %s in snippet", getClass().getSimpleName());
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75 }
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76 assert invoke.stateAfter().bci == BytecodeFrame.AFTER_BCI;
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77 // Here we need to fix the bci of the invoke
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78 InvokeNode newInvoke = snippetGraph.add(InvokeNode.create(invoke.callTarget(), getBci()));
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79 newInvoke.setStateAfter(invoke.stateAfter());
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80 snippetGraph.replaceFixedWithFixed((InvokeNode) invoke.asNode(), newInvoke);
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81 }
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82 }
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83 }