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annotate graal/com.oracle.graal.tests/src/com/oracle/graal/compiler/tests/EscapeAnalysisTest.java @ 5538:e18ba36bfebc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Renamed RiConstant => Constant.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Fri, 08 Jun 2012 23:41:02 +0200
parents dc71b06d09f8
children 4b47c0898e89 0083a59ced84
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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.compiler.tests;
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24
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25 import junit.framework.Assert;
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26
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27 import org.junit.Test;
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28
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29 import com.oracle.graal.api.meta.*;
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30 import com.oracle.graal.compiler.*;
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31 import com.oracle.graal.compiler.phases.*;
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32 import com.oracle.graal.debug.*;
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33 import com.oracle.graal.nodes.*;
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34 import com.oracle.graal.nodes.java.*;
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35
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36 /**
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37 * In these test cases the probability of all invokes is set to a high value, such that an InliningPhase should inline them all.
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38 * After that, the EscapeAnalysisPhase is expected to remove all allocations and return the correct values.
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39 */
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40 public class EscapeAnalysisTest extends GraphTest {
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41
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42 @Test
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43 public void test1() {
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44 test("test1Snippet", Constant.forInt(101));
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45 }
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46
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47 @SuppressWarnings("all")
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48 public static int test1Snippet(int a) {
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49 Integer x = new Integer(101);
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50 return x.intValue();
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51 }
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52
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53 @Test
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54 public void test2() {
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55 test("test2Snippet", Constant.forInt(0));
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56 }
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57
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58 @SuppressWarnings("all")
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59 public static int test2Snippet(int a) {
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60 Integer[] x = new Integer[0];
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61 return x.length;
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62 }
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63
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64 @Test
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65 public void test3() {
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66 test("test3Snippet", Constant.forObject(null));
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67 }
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68
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69 @SuppressWarnings("all")
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70 public static Object test3Snippet(int a) {
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71 Integer[] x = new Integer[1];
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72 return x[0];
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73 }
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74
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75 @Test
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76 public void testMonitor() {
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77 test("testMonitorSnippet", Constant.forInt(0));
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78 }
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79
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80 private static native void notInlineable();
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81
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82 @SuppressWarnings("all")
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83 public static int testMonitorSnippet(int a) {
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84 Integer x = new Integer(0);
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85 Integer[] y = new Integer[0];
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86 Integer[] z = new Integer[1];
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87 synchronized (x) {
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88 synchronized (y) {
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89 synchronized (z) {
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90 notInlineable();
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91 }
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92 }
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93 }
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94 return x.intValue();
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95 }
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96
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97 public void testMonitor2() {
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98 test("testMonitor2Snippet", Constant.forInt(0));
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99 }
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100
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101 /**
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102 * This test case differs from the last one in that it requires inlining within a synchronized region.
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103 */
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104 @SuppressWarnings("all")
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105 public static int testMonitor2Snippet(int a) {
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106 Integer x = new Integer(0);
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107 Integer[] y = new Integer[0];
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108 Integer[] z = new Integer[1];
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109 synchronized (x) {
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110 synchronized (y) {
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111 synchronized (z) {
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112 notInlineable();
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113 return x.intValue();
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114 }
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115 }
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116 }
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117 }
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118
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119 private void test(String snippet, Constant expectedResult) {
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120 StructuredGraph graph = parse(snippet);
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121 for (Invoke n : graph.getInvokes()) {
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122 n.node().setProbability(100000);
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123 }
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124
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125 new InliningPhase(null, runtime(), null, null, null, getDefaultPhasePlan(), OptimisticOptimizations.ALL).apply(graph);
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126 new DeadCodeEliminationPhase().apply(graph);
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127 Debug.dump(graph, "Graph");
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128 new EscapeAnalysisPhase(null, runtime(), null, null, getDefaultPhasePlan(), OptimisticOptimizations.ALL).apply(graph);
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129 Debug.dump(graph, "Graph");
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130 int retCount = 0;
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131 for (ReturnNode ret : graph.getNodes(ReturnNode.class)) {
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132 Assert.assertTrue(ret.result().isConstant());
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133 Assert.assertEquals(ret.result().asConstant(), expectedResult);
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134 retCount++;
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135 }
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136 Assert.assertEquals(1, retCount);
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137 int newInstanceCount = 0;
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138 for (@SuppressWarnings("unused") NewInstanceNode n : graph.getNodes(NewInstanceNode.class)) {
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139 newInstanceCount++;
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140 }
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141 for (@SuppressWarnings("unused") NewObjectArrayNode n : graph.getNodes(NewObjectArrayNode.class)) {
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142 newInstanceCount++;
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143 }
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144 Assert.assertEquals(0, newInstanceCount);
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145 }
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146 }