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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/HotSpotNodeClassSubstitutions.java @ 16811:5d468add216f

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added @NodeInfo annotations to all Node classes
author Doug Simon <doug.simon@oracle.com>
date Wed, 13 Aug 2014 18:25:45 +0200
parents d90e5c22ba55
children cbd42807a31f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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.hotspot.replacements;
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24
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25 import static com.oracle.graal.compiler.common.GraalOptions.*;
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26
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27 import com.oracle.graal.api.meta.*;
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28 import com.oracle.graal.api.replacements.*;
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29 import com.oracle.graal.graph.*;
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30 import com.oracle.graal.hotspot.meta.*;
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31 import com.oracle.graal.nodes.*;
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32 import com.oracle.graal.nodes.spi.*;
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33 import com.oracle.graal.replacements.nodes.*;
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34
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35 /**
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36 * Substitutions for improving the performance of {@link NodeClass#get}.
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37 */
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38 @ClassSubstitution(NodeClass.class)
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39 public class HotSpotNodeClassSubstitutions {
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40
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41 /**
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42 * A macro node for calls to {@link NodeClass#get(Class)}. It can use the compiler's knowledge
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43 * about node classes to replace itself with a constant value for a constant {@link Class}
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44 * parameter.
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45 */
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46 @NodeInfo
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47 public static class NodeClassGetNode extends PureFunctionMacroNode {
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48
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49 public NodeClassGetNode(Invoke invoke) {
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50 super(invoke);
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51 }
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52
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53 @Override
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54 protected Constant evaluate(Constant param, MetaAccessProvider metaAccess) {
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55 if (param.isNull() || ImmutableCode.getValue()) {
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56 return null;
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57 }
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58 return HotSpotObjectConstant.forObject(NodeClass.get((Class<?>) HotSpotObjectConstant.asObject(param)));
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59 }
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60 }
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61
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62 /**
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63 * NOTE: A {@link MethodSubstitution} similar to
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64 * {@link HotSpotNodeSubstitutions#getNodeClass(Node)} is not possible here because there is no
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65 * guarantee that {@code c} is initialized (accessing a Class literal in Java is not a class
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66 * initialization barrier).
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67 */
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68 @MacroSubstitution(isStatic = true, forced = true, macro = NodeClassGetNode.class)
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69 public static native NodeClass get(Class<?> c);
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70 }