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annotate graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/examples/StableDispatch.java @ 21517:4cc6793cda69
Make OptionProcessor create options files
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Mon, 18 May 2015 17:59:40 +0200 |
parents | a79a3e467245 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2015, 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.truffle.api.dsl.test.examples; |
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24 |
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25 import com.oracle.truffle.api.*; |
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26 import com.oracle.truffle.api.dsl.*; |
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27 import com.oracle.truffle.api.frame.*; |
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28 import com.oracle.truffle.api.nodes.*; |
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29 import com.oracle.truffle.api.utilities.*; |
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30 |
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31 /** |
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32 * This example is based on the SLDispatchNode of SimpleLanguage. It shows how to implement a simple |
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33 * inline cache with an assumption that needs to be checked. |
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34 * |
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35 * Note that if an assumption is invalidated the specialization instantiation is removed. |
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36 */ |
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37 @SuppressWarnings("unused") |
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38 @NodeChildren({@NodeChild("function"), @NodeChild("arguments")}) |
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39 public class StableDispatch { |
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40 |
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41 public static class StableDispatchNode extends ExampleNode { |
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42 |
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43 @Specialization(guards = "function == cachedFunction", assumptions = "cachedFunction.getCallTargetStable()") |
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44 protected static Object directDispatch(VirtualFrame frame, SLFunction function, Object[] arguments, // |
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45 @Cached("function") SLFunction cachedFunction, // |
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46 @Cached("create(cachedFunction.getCallTarget())") DirectCallNode callNode) { |
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47 return callNode.call(frame, arguments); |
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48 } |
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49 |
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50 @Specialization(contains = "directDispatch") |
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51 protected static Object indirectDispatch(VirtualFrame frame, SLFunction function, Object[] arguments, // |
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52 @Cached("create()") IndirectCallNode callNode) { |
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53 return callNode.call(frame, function.getCallTarget(), arguments); |
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54 } |
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55 } |
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56 |
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57 public static final class SLFunction { |
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58 |
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59 private CallTarget callTarget; |
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60 private final CyclicAssumption callTargetStable; |
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61 |
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62 protected SLFunction(String name) { |
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63 this.callTargetStable = new CyclicAssumption(name); |
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64 } |
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65 |
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66 protected void setCallTarget(CallTarget callTarget) { |
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67 this.callTarget = callTarget; |
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68 this.callTargetStable.invalidate(); |
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69 } |
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70 |
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71 public CallTarget getCallTarget() { |
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72 return callTarget; |
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73 } |
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74 |
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75 public Assumption getCallTargetStable() { |
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76 return callTargetStable.getAssumption(); |
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77 } |
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78 } |
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79 |
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80 } |