Mercurial > hg > truffle
annotate graal/GraalCompiler/src/com/sun/c1x/ir/And.java @ 2862:45422967cbcf
Rename Materialize => NormalizeCompare
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 07 Jun 2011 16:32:35 +0200 |
parents | b20f0a48fec3 |
children | 6d24c27902a2 |
rev | line source |
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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.oracle.max.graal.opt.CanonicalizerPhase.CanonicalizerOp; |
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27 import com.sun.cri.bytecode.*; |
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28 import com.sun.cri.ci.*; |
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29 |
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30 public final class And extends Logic { |
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31 private static final AndCanonicalizerOp CANONICALIZER = new AndCanonicalizerOp(); |
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32 |
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33 /** |
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34 * @param opcode |
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35 * @param x |
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36 * @param y |
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37 * @param graph |
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38 */ |
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39 public And(CiKind kind, Value x, Value y, Graph graph) { |
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40 super(kind, kind == CiKind.Int ? Bytecodes.IAND : Bytecodes.LAND, x, y, graph); |
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41 } |
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42 |
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43 @Override |
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44 public String shortName() { |
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45 return "&"; |
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46 } |
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47 |
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48 @Override |
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49 public Node copy(Graph into) { |
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50 And x = new And(kind, null, null, graph()); |
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51 return x; |
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52 } |
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53 |
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54 @SuppressWarnings("unchecked") |
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55 @Override |
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56 public <T extends Op> T lookup(Class<T> clazz) { |
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57 if (clazz == CanonicalizerOp.class) { |
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58 return (T) CANONICALIZER; |
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59 } |
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60 return super.lookup(clazz); |
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61 } |
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62 |
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63 private static class AndCanonicalizerOp implements CanonicalizerOp { |
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64 @Override |
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65 public Node canonical(Node node) { |
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66 assert node instanceof And; |
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67 And and = (And) node; |
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68 CiKind kind = and.kind; |
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69 Graph graph = and.graph(); |
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70 Value x = and.x(); |
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71 Value y = and.y(); |
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72 if (x == y) { |
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73 return x; |
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74 } |
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75 if (x.isConstant() && !y.isConstant()) { |
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76 and.swapOperands(); |
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77 Value t = y; |
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78 y = x; |
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79 x = t; |
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80 } |
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81 if (x.isConstant()) { |
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82 if (kind == CiKind.Int) { |
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83 return Constant.forInt(x.asConstant().asInt() & y.asConstant().asInt(), graph); |
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84 } else { |
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85 assert kind == CiKind.Long; |
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86 return Constant.forLong(x.asConstant().asLong() & y.asConstant().asLong(), graph); |
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87 } |
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88 } else if (y.isConstant()) { |
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89 if (kind == CiKind.Int) { |
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90 int c = y.asConstant().asInt(); |
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91 if (c == -1) { |
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92 return x; |
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93 } |
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94 if (c == 0) { |
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95 return Constant.forInt(0, graph); |
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96 } |
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97 } else { |
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98 assert kind == CiKind.Long; |
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99 long c = y.asConstant().asLong(); |
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100 if (c == -1) { |
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101 return x; |
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102 } |
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103 if (c == 0) { |
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104 return Constant.forLong(0, graph); |
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105 } |
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106 } |
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107 } |
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108 return and; |
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109 } |
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110 } |
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111 } |