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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/OrNode.java @ 15198:2c0cfbf454b5

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Move LIRTypeTool and Stamp to graal.compiler.common.
author Josef Eisl <josef.eisl@jku.at>
date Thu, 17 Apr 2014 17:28:20 +0200
parents ec22234bde0d
children 60406b8d6ad1
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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.graal.nodes.calc;
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24
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.compiler.common.type.*;
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.graph.spi.*;
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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.spi.*;
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32 import com.oracle.graal.nodes.type.*;
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34 @NodeInfo(shortName = "|")
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35 public final class OrNode extends BitLogicNode implements Canonicalizable {
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36
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37 public OrNode(Stamp stamp, ValueNode x, ValueNode y) {
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38 super(stamp, x, y);
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39 }
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41 @Override
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42 public boolean inferStamp() {
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43 return updateStamp(StampTool.or(x().stamp(), y().stamp()));
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44 }
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45
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46 @Override
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47 public Constant evalConst(Constant... inputs) {
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48 assert inputs.length == 2;
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49 return Constant.forPrimitiveInt(PrimitiveStamp.getBits(stamp()), inputs[0].asLong() | inputs[1].asLong());
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50 }
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51
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52 @Override
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53 public Node canonical(CanonicalizerTool tool) {
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54 if (x() == y()) {
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55 return x();
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56 }
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57 if (x().isConstant() && !y().isConstant()) {
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58 return graph().unique(new OrNode(stamp(), y(), x()));
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59 }
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60 if (x().isConstant()) {
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61 return ConstantNode.forPrimitive(stamp(), evalConst(x().asConstant(), y().asConstant()), graph());
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62 } else if (y().isConstant()) {
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63 long rawY = y().asConstant().asLong();
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64 long mask = IntegerStamp.defaultMask(PrimitiveStamp.getBits(stamp()));
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65 if ((rawY & mask) == mask) {
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66 return ConstantNode.forIntegerStamp(stamp(), mask, graph());
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67 }
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68 if ((rawY & mask) == 0) {
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69 return x();
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70 }
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71 return BinaryNode.reassociate(this, ValueNode.isConstantPredicate());
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72 }
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73 return this;
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74 }
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75
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76 @Override
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77 public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) {
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78 builder.setResult(this, gen.emitOr(builder.operand(x()), builder.operand(y())));
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79 }
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80
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81 @Override
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82 public boolean generate(MemoryArithmeticLIRLowerer gen, Access access) {
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83 Value result = gen.emitOrMemory(x(), y(), access);
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84 if (result != null) {
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85 gen.setResult(this, result);
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86 }
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87 return result != null;
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88 }
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89 }