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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/FunctionRootNode.java @ 12752:71991b7a0f14

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SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
author Christian Humer <christian.humer@gmail.com>
date Mon, 11 Nov 2013 21:34:44 +0100
parents graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/FunctionDefinitionNode.java@82ec5f898e6c
children 652f24858aad
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1 /*
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2 * Copyright (c) 2012, 2013, 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;
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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.sl.builtins.*;
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30 import com.oracle.truffle.sl.runtime.*;
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31
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32 public final class FunctionRootNode extends RootNode {
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33
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34 @Child private TypedNode body;
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35
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36 private final TypedNode uninitializedBody;
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37 private final String name;
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38 private final boolean alwaysInline;
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39
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40 private FunctionRootNode(TypedNode body, String name, boolean alwaysInline) {
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41 super(null);
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42 this.uninitializedBody = NodeUtil.cloneNode(body);
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43 this.body = adoptChild(body);
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44 this.name = name;
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45 this.alwaysInline = alwaysInline;
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46 }
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47
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48 public static CallTarget createBuiltin(SLContext context, NodeFactory<? extends BuiltinNode> factory, String name) {
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49 int argumentCount = factory.getExecutionSignature().size();
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50 TypedNode[] arguments = new TypedNode[argumentCount];
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51 for (int i = 0; i < arguments.length; i++) {
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52 arguments[i] = new ReadArgumentNode(i);
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53 }
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54 BuiltinNode buitinBody = factory.createNode(arguments, context);
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55 FunctionRootNode root = new FunctionRootNode(buitinBody, name, true);
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56 return Truffle.getRuntime().createCallTarget(root);
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57 }
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58
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59 public static CallTarget createFunction(StatementNode body, FrameDescriptor frameDescriptor, String name, TypedNode returnValue, String[] parameterNames) {
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60 FunctionBodyNode bodyContainer = new FunctionBodyNode(frameDescriptor, body, returnValue, parameterNames);
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61 FunctionRootNode root = new FunctionRootNode(bodyContainer, name, false);
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62 return Truffle.getRuntime().createCallTarget(root, frameDescriptor);
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63 }
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64
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65 @Override
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66 public Object execute(VirtualFrame frame) {
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67 return body.executeGeneric(frame);
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68 }
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69
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70 public boolean isAlwaysInline() {
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71 return alwaysInline;
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72 }
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73
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74 public TypedNode inline(ArgumentsNode clonedArgs) {
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75 TypedNode clonedBody = NodeUtil.cloneNode(uninitializedBody);
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76 if (clonedBody instanceof BuiltinNode) {
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77 return inlineBuiltin(clonedArgs, (BuiltinNode) clonedBody);
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78 } else if (clonedBody instanceof FunctionBodyNode) {
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79 return inlineFunction(clonedArgs, (FunctionBodyNode) clonedBody);
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80 } else {
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81 throw new UnsupportedOperationException();
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82 }
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83 }
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84
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85 private InlinedFunctionNode inlineFunction(ArgumentsNode clonedArgs, FunctionBodyNode clonedBody) {
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86 return new InlinedFunctionNode(getCallTarget(), clonedBody, clonedArgs);
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87 }
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88
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89 private static TypedNode inlineBuiltin(ArgumentsNode clonedArgs, BuiltinNode builtin) {
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90 TypedNode[] callerArgs = clonedArgs.getArguments();
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91 TypedNode[] builtinArgs = builtin.getArguments();
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92 for (int i = 0; i < builtinArgs.length; i++) {
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93 if (i < callerArgs.length) {
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94 builtinArgs[i].replace(callerArgs[i]);
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95 } else {
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96 builtinArgs[i].replace(new NullLiteralNode());
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97 }
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98 }
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99 return builtin;
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100 }
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101
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102 public Node getUninitializedBody() {
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103 return uninitializedBody;
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104 }
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105
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106 @Override
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107 public String toString() {
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108 return "function " + name;
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109 }
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110
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111 private static final class InlinedFunctionNode extends TypedNode implements InlinedCallSite {
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112
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113 @Child private FunctionBodyNode body;
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114 @Child private ArgumentsNode arguments;
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115
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116 private final CallTarget callTarget;
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117 private final FrameDescriptor frameDescriptor;
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118
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119 public InlinedFunctionNode(CallTarget callTarget, FunctionBodyNode body, ArgumentsNode arguments) {
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120 this.callTarget = callTarget;
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121 this.body = adoptChild(body);
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122 this.frameDescriptor = body.getFrameDescriptor();
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123 this.arguments = adoptChild(arguments);
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124 }
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125
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126 @Override
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127 public Object executeGeneric(VirtualFrame frame) {
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128 SLArguments args = new SLArguments(arguments.executeArray(frame));
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129 VirtualFrame childFrame = Truffle.getRuntime().createVirtualFrame(frame.pack(), args, frameDescriptor);
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130 return body.executeGeneric(childFrame);
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131 }
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132
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133 public CallTarget getCallTarget() {
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134 return callTarget;
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135 }
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136
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137 }
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138
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139 public String getName() {
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140 return name;
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141 }
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142
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213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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143 }