Mercurial > hg > truffle
annotate graal/GraalCompiler/src/com/sun/c1x/ir/ValueAnchor.java @ 2868:6d24c27902a2
turned inlining into a phase, some node cloning fixes, added NodeWorklist
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 07 Jun 2011 19:19:14 +0200 |
parents | 5c545fef2c81 |
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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.sun.c1x.ir; |
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24 |
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25 import com.oracle.graal.graph.*; |
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26 import com.sun.c1x.debug.*; |
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27 import com.sun.cri.ci.*; |
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28 |
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29 /** |
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30 * The ValueAnchor instruction keeps non-CFG nodes above a certain point in the graph. |
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31 */ |
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32 public final class ValueAnchor extends Instruction { |
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33 |
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34 private static final int INPUT_COUNT = 1; |
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35 private static final int INPUT_OBJECT = 0; |
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36 |
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37 private static final int SUCCESSOR_COUNT = 0; |
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38 |
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39 @Override |
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40 protected int inputCount() { |
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41 return super.inputCount() + INPUT_COUNT; |
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42 } |
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43 |
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44 @Override |
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45 protected int successorCount() { |
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46 return super.successorCount() + SUCCESSOR_COUNT; |
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47 } |
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48 |
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49 /** |
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50 * The instruction that should be scheduled before this anchor. |
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51 */ |
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52 public Value object() { |
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53 return (Value) inputs().get(super.inputCount() + INPUT_OBJECT); |
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54 } |
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55 |
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56 public Value setObject(Value n) { |
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57 return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, n); |
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58 } |
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59 |
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60 /** |
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61 * Constructs a new Anchor instruction. |
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62 * @param succ the successor block of the anchor |
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63 * @param graph |
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64 */ |
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65 public ValueAnchor(Value object, Graph graph) { |
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66 super(CiKind.Illegal, INPUT_COUNT, SUCCESSOR_COUNT, graph); |
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67 setObject(object); |
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68 } |
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69 |
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70 @Override |
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71 public void accept(ValueVisitor v) { |
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72 v.visitValueAnchor(this); |
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73 } |
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74 |
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75 @Override |
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76 public void print(LogStream out) { |
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77 out.print("value_anchor ").print(object()); |
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78 } |
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79 |
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80 @Override |
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81 public Node copy(Graph into) { |
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82 ValueAnchor x = new ValueAnchor(null, into); |
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83 return x; |
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84 } |
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85 } |