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annotate graal/com.oracle.graal.hotspot.hsail/src/com/oracle/graal/hotspot/hsail/ForEachToGraal.java @ 15021:9dcd5407a603

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added support for overriding/complementing JMH arguments in jmh command with a JSON string
author Doug Simon <doug.simon@oracle.com>
date Tue, 08 Apr 2014 16:04:59 +0200
parents 64dcb92ee75a
children 288c23143d47
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rev   line source
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1 /*
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2 * Copyright (c) 2009, 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
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24 package com.oracle.graal.hotspot.hsail;
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25
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26 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
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27
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28 import java.lang.reflect.*;
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29
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30 import com.oracle.graal.api.code.*;
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31 import com.oracle.graal.api.meta.*;
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32 import com.oracle.graal.compiler.hsail.*;
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33 import com.oracle.graal.compiler.target.*;
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34 import com.oracle.graal.debug.*;
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35 import com.oracle.graal.debug.internal.*;
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36 import com.oracle.graal.gpu.*;
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37 import com.oracle.graal.graph.iterators.*;
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38 import com.oracle.graal.hotspot.meta.*;
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39 import com.oracle.graal.hsail.*;
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40 import com.oracle.graal.java.*;
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41 import com.oracle.graal.nodes.*;
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42 import com.oracle.graal.nodes.java.*;
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43 import com.oracle.graal.phases.*;
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44 import com.oracle.graal.phases.util.*;
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45 import com.oracle.graal.printer.*;
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46
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47 /**
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48 * Implements compile and dispatch of Java code containing lambda constructs. Currently only used by
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49 * JDK interception code that offloads to the GPU.
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50 */
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51 public class ForEachToGraal implements CompileAndDispatch {
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52
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53 private static HSAILHotSpotBackend getHSAILBackend() {
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54 Backend backend = runtime().getBackend(HSAIL.class);
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55 return (HSAILHotSpotBackend) backend;
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56 }
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57
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58 /**
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59 * Gets a compiled and installed kernel for the lambda called by the {@code accept(int value)}
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60 * method in a class implementing {@code java.util.function.IntConsumer}.
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61 *
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62 * @param intConsumerClass a class implementing {@code java.util.function.IntConsumer}
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63 * @return a {@link HotSpotNmethod} handle to the compiled and installed kernel
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64 */
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65 private static HotSpotNmethod getCompiledLambda(Class intConsumerClass) {
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66 Method acceptMethod = null;
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67 for (Method m : intConsumerClass.getMethods()) {
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68 if (m.getName().equals("accept")) {
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69 assert acceptMethod == null : "found more than one implementation of accept(int) in " + intConsumerClass;
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70 acceptMethod = m;
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71 }
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72 }
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73
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74 // Ensure a debug configuration for this thread is initialized
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75 if (DebugScope.getConfig() == null) {
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76 DebugEnvironment.initialize(System.out);
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77 }
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78
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79 HSAILHotSpotBackend backend = getHSAILBackend();
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80 Providers providers = backend.getProviders();
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81 StructuredGraph graph = new StructuredGraph(((HotSpotMetaAccessProvider) providers.getMetaAccess()).lookupJavaMethod(acceptMethod));
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82 new GraphBuilderPhase.Instance(providers.getMetaAccess(), GraphBuilderConfiguration.getDefault(), OptimisticOptimizations.ALL).apply(graph);
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83 NodeIterable<MethodCallTargetNode> calls = graph.getNodes(MethodCallTargetNode.class);
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84 assert calls.count() == 1;
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85 ResolvedJavaMethod lambdaMethod = calls.first().targetMethod();
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86 Debug.log("target ... %s", lambdaMethod);
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87
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88 if (lambdaMethod == null) {
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89 Debug.log("Did not find call in accept()");
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90 return null;
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91 }
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92 assert lambdaMethod.getName().startsWith("lambda$");
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93
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94 ExternalCompilationResult hsailCode = backend.compileKernel(lambdaMethod, true);
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95 return backend.installKernel(lambdaMethod, hsailCode);
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96 }
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97
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98 @Override
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99 public Object createKernel(Class<?> consumerClass) {
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100 try {
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101 return getCompiledLambda(consumerClass);
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102 } catch (Throwable e) {
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103 // If Graal compilation throws an exception, we want to revert to regular Java
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104 Debug.log("WARNING: Graal compilation failed");
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105 e.printStackTrace();
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106 return null;
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107 }
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108 }
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109
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110 @Override
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111 public boolean dispatchKernel(Object kernel, int jobSize, Object[] args) {
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112 HotSpotNmethod code = (HotSpotNmethod) kernel;
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113 if (code != null) {
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114 try {
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115 // No return value from HSAIL kernels
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116 getHSAILBackend().executeKernel(code, jobSize, args);
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117 return true;
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118 } catch (InvalidInstalledCodeException iice) {
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119 Debug.log("WARNING: Invalid installed code at exec time: %s", iice);
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120 iice.printStackTrace();
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121 return false;
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122 }
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123 } else {
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124 // Should throw something sensible here
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125 return false;
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126 }
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127 }
4ef92b67aeae added HSAIL backend and tests
Doug Simon <doug.simon@oracle.com>
parents:
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