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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/LogicConstantNode.java @ 9135:c5fa76a20868

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Remove unused field.
author Roland Schatz <roland.schatz@oracle.com>
date Tue, 16 Apr 2013 13:21:22 +0200
parents 4a6646d8eb87
children 057154505878
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4a6646d8eb87 separate BooleanNode and ConstantNode hierarchy, rename BooleanNode to LogicNode and LogicNode to BitLogicNode
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1 /*
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2 * Copyright (c) 2009, 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;
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24
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25 import com.oracle.graal.graph.*;
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26 import com.oracle.graal.nodes.spi.*;
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27
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28 /**
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29 * The {@code ConstantNode} represents a constant such as an integer value, long, float, object
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30 * reference, address, etc.
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31 */
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32 @NodeInfo(nameTemplate = "{p#value}")
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33 public class LogicConstantNode extends LogicNode implements LIRLowerable {
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34
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35 public final boolean value;
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36
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37 protected LogicConstantNode(boolean value) {
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38 super();
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39 this.value = value;
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40 }
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41
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42 /**
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43 * Returns a node for a boolean constant.
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44 *
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45 * @param v the boolean value for which to create the instruction
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46 * @param graph
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47 * @return a node representing the boolean
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48 */
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49 public static LogicConstantNode forBoolean(boolean v, Graph graph) {
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50 return graph.unique(new LogicConstantNode(v));
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51 }
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52
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53 public static LogicConstantNode tautology(Graph graph) {
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54 return forBoolean(true, graph);
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55 }
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56
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57 public static LogicConstantNode contradiction(Graph graph) {
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58 return forBoolean(false, graph);
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59 }
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60
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61 public boolean getValue() {
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62 return value;
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63 }
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64
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65 @Override
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66 public LogicNode canonical(CanonicalizerTool tool) {
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67 throw new GraalInternalError("shouldn't call canonical on LogicConstantNode");
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68 }
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69
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70 @Override
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71 public void generate(LIRGeneratorTool generator) {
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72 // nothing to do
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73 }
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74 }