Mercurial > hg > truffle
annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/call/SLInvokeNode.java @ 20956:2170de9acab0
SL: use DSL for call dispatches.
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 14 Apr 2015 15:16:14 +0200 |
parents | abe7128ca473 |
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1 /* |
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2 * Copyright (c) 2013, 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.sl.nodes.call; |
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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.source.*; |
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30 import com.oracle.truffle.sl.nodes.*; |
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31 import com.oracle.truffle.sl.runtime.*; |
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32 |
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33 /** |
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34 * The node for function invocation in SL. Since SL has first class functions, the |
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35 * {@link SLFunction target function} can be computed by an {@link #functionNode arbitrary |
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36 * expression}. This node is responsible for evaluating this expression, as well as evaluating the |
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37 * {@link #argumentNodes arguments}. The actual dispatch is then delegated to a chain of |
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38 * {@link SLDispatchNode} that form a polymorphic inline cache. |
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39 */ |
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40 @NodeInfo(shortName = "invoke") |
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41 public final class SLInvokeNode extends SLExpressionNode { |
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42 |
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43 public static SLInvokeNode create(SourceSection src, SLExpressionNode function, SLExpressionNode[] arguments) { |
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44 return new SLInvokeNode(src, function, arguments); |
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45 } |
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46 |
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47 @Child private SLExpressionNode functionNode; |
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48 @Children private final SLExpressionNode[] argumentNodes; |
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49 @Child private SLDispatchNode dispatchNode; |
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50 |
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51 private SLInvokeNode(SourceSection src, SLExpressionNode functionNode, SLExpressionNode[] argumentNodes) { |
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52 super(src); |
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53 this.functionNode = functionNode; |
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54 this.argumentNodes = argumentNodes; |
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55 this.dispatchNode = SLDispatchNodeGen.create(); |
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56 } |
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57 |
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58 @Override |
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59 @ExplodeLoop |
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60 public Object executeGeneric(VirtualFrame frame) { |
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61 SLFunction function = evaluateFunction(frame); |
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62 |
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63 /* |
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64 * The number of arguments is constant for one invoke node. During compilation, the loop is |
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65 * unrolled and the execute methods of all arguments are inlined. This is triggered by the |
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66 * ExplodeLoop annotation on the method. The compiler assertion below illustrates that the |
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67 * array length is really constant. |
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68 */ |
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69 CompilerAsserts.compilationConstant(argumentNodes.length); |
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70 |
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71 Object[] argumentValues = new Object[argumentNodes.length]; |
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72 for (int i = 0; i < argumentNodes.length; i++) { |
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73 argumentValues[i] = argumentNodes[i].executeGeneric(frame); |
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74 } |
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75 |
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76 return dispatchNode.executeDispatch(frame, function, argumentValues); |
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77 } |
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78 |
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79 private SLFunction evaluateFunction(VirtualFrame frame) { |
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80 try { |
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81 /* |
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82 * The function node must evaluate to a SLFunction value, so we call |
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83 * function-specialized method. |
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84 */ |
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85 return functionNode.executeFunction(frame); |
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86 } catch (UnexpectedResultException ex) { |
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87 /* |
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88 * The function node evaluated to a non-function result. This is a type error in the SL |
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89 * program. We report it with the same exception that Truffle DSL generated nodes use to |
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90 * report type errors. |
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91 */ |
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92 throw new UnsupportedSpecializationException(this, new Node[]{functionNode}, ex.getResult()); |
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93 } |
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94 } |
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95 } |