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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/MemoryMapNode.java @ 17276:ffb974bef674

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moved Node valueNumber and valueEquals logic (optionally) to generated nodes
author Doug Simon <doug.simon@oracle.com>
date Wed, 01 Oct 2014 07:39:47 +0200
parents 0fe4732e5181
children 655f3e6b467b
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1 /*
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2 * Copyright (c) 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;
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24
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25 import static com.oracle.graal.api.meta.LocationIdentity.*;
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26
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27 import java.util.*;
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28
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29 import com.oracle.graal.api.meta.*;
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30 import com.oracle.graal.compiler.common.type.*;
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31 import com.oracle.graal.graph.*;
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32 import com.oracle.graal.nodeinfo.*;
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33 import com.oracle.graal.nodes.calc.*;
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34 import com.oracle.graal.nodes.extended.*;
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35 import com.oracle.graal.nodes.spi.*;
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36
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37 @NodeInfo(allowedUsageTypes = {InputType.Extension})
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38 public class MemoryMapNode extends FloatingNode implements MemoryMap, LIRLowerable {
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39
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40 protected final List<LocationIdentity> locationIdentities;
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41 @Input(InputType.Memory) NodeInputList<ValueNode> nodes;
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42
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43 private boolean checkOrder(Map<LocationIdentity, MemoryNode> mmap) {
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44 for (int i = 0; i < locationIdentities.size(); i++) {
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45 LocationIdentity locationIdentity = locationIdentities.get(i);
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46 ValueNode n = nodes.get(i);
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47 assertTrue(mmap.get(locationIdentity) == n, "iteration order of keys differs from values in input map");
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48 }
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49 return true;
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50 }
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51
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52 public static MemoryMapNode create(Map<LocationIdentity, MemoryNode> mmap) {
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53 return USE_GENERATED_NODES ? new MemoryMapNodeGen(mmap) : new MemoryMapNode(mmap);
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54 }
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55
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56 protected MemoryMapNode(Map<LocationIdentity, MemoryNode> mmap) {
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57 super(StampFactory.forVoid());
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58 locationIdentities = new ArrayList<>(mmap.keySet());
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59 nodes = new NodeInputList<>(this, mmap.values());
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60 assert checkOrder(mmap);
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61 }
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62
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63 public boolean isEmpty() {
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64 if (locationIdentities.isEmpty()) {
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65 return true;
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66 }
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67 if (locationIdentities.size() == 1) {
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68 if (nodes.get(0) instanceof StartNode) {
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69 return true;
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70 }
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71 }
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72 return false;
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73 }
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74
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75 public MemoryNode getLastLocationAccess(LocationIdentity locationIdentity) {
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76 if (locationIdentity == FINAL_LOCATION) {
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77 return null;
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78 } else {
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79 int index = locationIdentities.indexOf(locationIdentity);
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80 if (index == -1) {
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81 index = locationIdentities.indexOf(ANY_LOCATION);
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82 }
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83 assert index != -1;
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84 return (MemoryNode) nodes.get(index);
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85 }
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86 }
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87
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88 public Collection<LocationIdentity> getLocations() {
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89 return locationIdentities;
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90 }
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91
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92 public Map<LocationIdentity, MemoryNode> toMap() {
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93 HashMap<LocationIdentity, MemoryNode> res = new HashMap<>(locationIdentities.size());
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94 for (int i = 0; i < nodes.size(); i++) {
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95 res.put(locationIdentities.get(i), (MemoryNode) nodes.get(i));
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96 }
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97 return res;
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98 }
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99
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100 public void generate(NodeLIRBuilderTool generator) {
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101 // nothing to do...
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102 }
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103 }