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annotate graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/EndNode.java @ 3516:9b59afa78775

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Remove copy method from nodes.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Mon, 08 Aug 2011 23:27:54 +0200
parents d95db56f8deb
children 6b841b6b2437
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1 /*
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2 * Copyright (c) 2011, 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.max.graal.compiler.ir;
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24
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25 import java.util.*;
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27 import com.oracle.max.graal.compiler.debug.*;
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28 import com.oracle.max.graal.graph.*;
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29 import com.sun.cri.ci.*;
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30
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31
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60a58915c94d Removed next pointer from EndNode to Merge. New scheduler.
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32 public final class EndNode extends FixedNode {
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33
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34 public EndNode(Graph graph) {
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35 super(CiKind.Illegal, graph);
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36 }
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37
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38 @Override
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39 public void accept(ValueVisitor v) {
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d69b4d2eb499 Cleaned up code around moveToPhi. The function is now explicitely called for EndNode and LoopEnd.
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40 v.visitEndNode(this);
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41 }
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42
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43 @Override
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44 public void print(LogStream out) {
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45 out.print("end");
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46 }
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47
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48 public Merge merge() {
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49 if (usages().size() == 0) {
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50 return null;
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51 } else {
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52 assert usages().size() == 1;
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53 return (Merge) usages().iterator().next();
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54 }
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55 }
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57 @Override
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58 public boolean verify() {
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59 assertTrue(usages().size() <= 1, "at most one usage");
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60 return true;
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61 }
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62
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63 @Override
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64 public Iterable< ? extends Node> dataUsages() {
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65 return Collections.emptyList();
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66 }
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68 @Override
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69 public Iterable< ? extends Node> cfgSuccessors() {
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70 Merge merge = this.merge();
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71 if (merge == null) {
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72 return Collections.emptyList();
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73 }
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74 return Arrays.asList(merge);
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75 }
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76 }