Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/ReplaceTest.java @ 10694:31266ceb86ef
SPARC: Can compile and run two or three methods of a bootstrap.
author | twisti |
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date | Wed, 10 Jul 2013 12:50:45 -0700 |
parents | 5e3d1a68664e |
children | 7f6580db1e88 |
rev | line source |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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1 /* |
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2 * Copyright (c) 2012, 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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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4 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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5 * This code is free software; you can redistribute it and/or modify it |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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6 * under the terms of the GNU General Public License version 2 only, as |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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7 * published by the Free Software Foundation. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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8 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * accompanied this code). |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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.test; |
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24 |
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25 import static org.junit.Assert.*; |
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26 |
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27 import java.util.*; |
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28 |
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29 import org.junit.*; |
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30 |
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31 import com.oracle.truffle.api.*; |
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32 import com.oracle.truffle.api.frame.*; |
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33 import com.oracle.truffle.api.nodes.*; |
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34 |
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35 /** |
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36 * <h3>Replacing Nodes at Run Time</h3> |
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37 * |
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38 * <p> |
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39 * The structure of the Truffle tree can be changed at run time by replacing nodes using the |
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40 * {@link Node#replace(Node)} method. This method will automatically change the child pointer in the |
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41 * parent of the node and replace it with a pointer to the new node. |
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42 * </p> |
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43 * |
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44 * <p> |
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45 * Replacing nodes is a costly operation, so it should not happen too often. The convention is that |
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46 * the implementation of the Truffle nodes should ensure that there are maximal a small (and |
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47 * constant) number of node replacements per Truffle node. |
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48 * </p> |
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49 * |
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50 * <p> |
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51 * The next part of the Truffle API introduction is at {@link com.oracle.truffle.api.test.CallTest}. |
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52 * </p> |
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53 */ |
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54 public class ReplaceTest { |
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55 |
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56 @Test |
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57 public void test() { |
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58 TruffleRuntime runtime = Truffle.getRuntime(); |
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59 UnresolvedNode leftChild = new UnresolvedNode("20"); |
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60 UnresolvedNode rightChild = new UnresolvedNode("22"); |
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61 TestRootNode rootNode = new TestRootNode(new ValueNode[]{leftChild, rightChild}); |
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62 assertEquals(rootNode, leftChild.getParent()); |
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63 assertEquals(rootNode, rightChild.getParent()); |
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64 Iterator<Node> iterator = rootNode.getChildren().iterator(); |
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65 Assert.assertEquals(leftChild, iterator.next()); |
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66 Assert.assertEquals(rightChild, iterator.next()); |
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67 Assert.assertFalse(iterator.hasNext()); |
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68 CallTarget target = runtime.createCallTarget(rootNode); |
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69 Object result = target.call(); |
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70 assertEquals(42, result); |
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71 assertEquals(42, target.call()); |
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72 iterator = rootNode.getChildren().iterator(); |
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73 Assert.assertEquals(ResolvedNode.class, iterator.next().getClass()); |
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74 Assert.assertEquals(ResolvedNode.class, iterator.next().getClass()); |
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75 Assert.assertFalse(iterator.hasNext()); |
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76 iterator = rootNode.getChildren().iterator(); |
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77 Assert.assertEquals(rootNode, iterator.next().getParent()); |
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78 Assert.assertEquals(rootNode, iterator.next().getParent()); |
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79 Assert.assertFalse(iterator.hasNext()); |
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80 } |
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81 |
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82 class TestRootNode extends RootNode { |
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83 |
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84 @Children private ValueNode[] children; |
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85 |
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86 public TestRootNode(ValueNode[] children) { |
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87 this.children = adoptChildren(children); |
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88 } |
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89 |
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90 @Override |
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91 public Object execute(VirtualFrame frame) { |
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92 int sum = 0; |
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93 for (int i = 0; i < children.length; ++i) { |
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94 sum += children[i].execute(); |
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95 } |
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96 return sum; |
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97 } |
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98 } |
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99 |
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100 abstract class ValueNode extends Node { |
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101 |
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102 abstract int execute(); |
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103 } |
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104 |
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105 class UnresolvedNode extends ValueNode { |
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106 |
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107 private final String value; |
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108 |
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109 public UnresolvedNode(String value) { |
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110 this.value = value; |
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111 } |
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112 |
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113 @Override |
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114 int execute() { |
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115 int intValue = Integer.parseInt(value); |
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116 ResolvedNode newNode = this.replace(new ResolvedNode(intValue)); |
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117 return newNode.execute(); |
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118 } |
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119 } |
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120 |
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121 class ResolvedNode extends ValueNode { |
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122 |
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123 private final int value; |
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124 |
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125 ResolvedNode(int value) { |
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126 this.value = value; |
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127 } |
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128 |
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129 @Override |
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130 int execute() { |
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131 return value; |
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132 } |
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133 } |
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134 } |