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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nfi/NativeCallStubGraphBuilder.java @ 18513:8b87897f5b42

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introduced HotSpotGraalRuntimeProvder interface
author Doug Simon <doug.simon@oracle.com>
date Wed, 26 Nov 2014 09:38:46 +0100
parents f0a8b72315c1
children d138867d61c4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2014, 2014, 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.hotspot.nfi;
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24
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25 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
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26
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27 import java.util.*;
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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.common.*;
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31 import com.oracle.graal.compiler.common.type.*;
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32 import com.oracle.graal.hotspot.meta.*;
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33 import com.oracle.graal.hotspot.word.*;
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34 import com.oracle.graal.nodes.*;
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35 import com.oracle.graal.nodes.extended.*;
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36 import com.oracle.graal.nodes.java.*;
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37 import com.oracle.graal.nodes.virtual.*;
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38
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39 /**
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40 * Utility creating a graph for a stub used to call a native function.
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41 */
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42 public class NativeCallStubGraphBuilder {
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43
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44 /**
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45 * Creates a graph for a stub used to call a native function.
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46 *
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47 * @param functionPointer a native function pointer
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48 * @param returnType the type of the return value
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49 * @param argumentTypes the types of the arguments
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50 * @return the graph that represents the call stub
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51 */
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52 public static StructuredGraph getGraph(HotSpotProviders providers, RawNativeCallNodeFactory factory, long functionPointer, Class<?> returnType, Class<?>... argumentTypes) {
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53 try {
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54 ResolvedJavaMethod method = providers.getMetaAccess().lookupJavaMethod(NativeCallStubGraphBuilder.class.getMethod("libCall", Object.class, Object.class, Object.class));
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55 StructuredGraph g = new StructuredGraph(method);
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56 ParameterNode arg0 = g.unique(ParameterNode.create(0, StampFactory.forKind(Kind.Object)));
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57 ParameterNode arg1 = g.unique(ParameterNode.create(1, StampFactory.forKind(Kind.Object)));
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58 ParameterNode arg2 = g.unique(ParameterNode.create(2, StampFactory.forKind(Kind.Object)));
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59 FrameState frameState = g.add(FrameState.create(null, method, 0, Arrays.asList(new ValueNode[]{arg0, arg1, arg2}), 3, 0, false, false, new ArrayList<MonitorIdNode>(),
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60 new ArrayList<EscapeObjectState>()));
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61 g.start().setStateAfter(frameState);
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62 List<ValueNode> parameters = new ArrayList<>();
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63 FixedWithNextNode fixedWithNext = getParameters(g, arg0, argumentTypes.length, argumentTypes, parameters, providers);
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64 JavaConstant functionPointerNode = JavaConstant.forLong(functionPointer);
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65
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66 ValueNode[] arguments = new ValueNode[parameters.size()];
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67
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68 for (int i = 0; i < arguments.length; i++) {
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69 arguments[i] = parameters.get(i);
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70 }
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71
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72 FixedWithNextNode callNode = g.add(factory.createRawCallNode(getKind(returnType), functionPointerNode, arguments));
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73
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74 if (fixedWithNext == null) {
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75 g.start().setNext(callNode);
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76 } else {
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77 fixedWithNext.setNext(callNode);
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78 }
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79
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80 // box result
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81 BoxNode boxedResult;
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82 if (callNode.getKind() != Kind.Void) {
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83 if (callNode.getKind() == Kind.Object) {
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84 throw new IllegalArgumentException("Return type not supported: " + returnType.getName());
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85 }
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86 ResolvedJavaType type = providers.getMetaAccess().lookupJavaType(callNode.getKind().toBoxedJavaClass());
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87 boxedResult = g.unique(BoxNode.create(callNode, type, callNode.getKind()));
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88 } else {
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89 boxedResult = g.unique(BoxNode.create(ConstantNode.forLong(0, g), providers.getMetaAccess().lookupJavaType(Long.class), Kind.Long));
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90 }
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91
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92 ReturnNode returnNode = g.add(ReturnNode.create(boxedResult));
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93 callNode.setNext(returnNode);
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94 (new HotSpotWordTypeRewriterPhase(providers.getMetaAccess(), providers.getSnippetReflection(), providers.getConstantReflection(), Kind.Long)).apply(g);
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95 return g;
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96 } catch (NoSuchMethodException e) {
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97 throw GraalInternalError.shouldNotReachHere("Call Stub method not found");
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98 }
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99 }
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100
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101 private static FixedWithNextNode getParameters(StructuredGraph g, ParameterNode argumentsArray, int numArgs, Class<?>[] argumentTypes, List<ValueNode> args, HotSpotProviders providers) {
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102 assert numArgs == argumentTypes.length;
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103 FixedWithNextNode last = null;
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104 for (int i = 0; i < numArgs; i++) {
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105 // load boxed array element:
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106 LoadIndexedNode boxedElement = g.add(LoadIndexedNode.create(argumentsArray, ConstantNode.forInt(i, g), Kind.Object));
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107 if (i == 0) {
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108 g.start().setNext(boxedElement);
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109 last = boxedElement;
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110 } else {
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111 last.setNext(boxedElement);
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112 last = boxedElement;
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113 }
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114 Class<?> type = argumentTypes[i];
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115 Kind kind = getKind(type);
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116 if (kind == Kind.Object) {
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117 // array value
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118 Kind arrayElementKind = getElementKind(type);
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119 LocationIdentity locationIdentity = NamedLocationIdentity.getArrayLocation(arrayElementKind);
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120 int displacement = runtime().getArrayBaseOffset(arrayElementKind);
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121 ConstantNode index = ConstantNode.forInt(0, g);
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122 int indexScaling = runtime().getArrayIndexScale(arrayElementKind);
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123 IndexedLocationNode locationNode = IndexedLocationNode.create(locationIdentity, arrayElementKind, displacement, index, g, indexScaling);
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124 Stamp wordStamp = StampFactory.forKind(providers.getCodeCache().getTarget().wordKind);
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125 ComputeAddressNode arrayAddress = g.unique(ComputeAddressNode.create(boxedElement, locationNode, wordStamp));
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126 args.add(arrayAddress);
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127 } else {
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128 // boxed primitive value
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129 try {
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130 ResolvedJavaField field = providers.getMetaAccess().lookupJavaField(kind.toBoxedJavaClass().getDeclaredField("value"));
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131 LoadFieldNode loadFieldNode = g.add(LoadFieldNode.create(boxedElement, field));
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132 last.setNext(loadFieldNode);
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133 last = loadFieldNode;
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134 args.add(loadFieldNode);
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135 } catch (NoSuchFieldException e) {
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136 throw new GraalInternalError(e);
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137 }
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138 }
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139 }
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140 return last;
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141 }
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142
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143 public static Kind getElementKind(Class<?> clazz) {
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144 Class<?> componentType = clazz.getComponentType();
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145 if (componentType == null) {
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146 throw new IllegalArgumentException("Parameter type not supported: " + clazz);
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147 }
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148 if (componentType.isPrimitive()) {
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149 return Kind.fromJavaClass(componentType);
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150 }
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151 throw new IllegalArgumentException("Parameter type not supported: " + clazz);
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152 }
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153
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154 private static Kind getKind(Class<?> clazz) {
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155 if (clazz == int.class || clazz == Integer.class) {
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156 return Kind.Int;
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157 } else if (clazz == long.class || clazz == Long.class) {
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158 return Kind.Long;
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159 } else if (clazz == char.class || clazz == Character.class) {
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160 return Kind.Char;
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161 } else if (clazz == byte.class || clazz == Byte.class) {
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162 return Kind.Byte;
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163 } else if (clazz == float.class || clazz == Float.class) {
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164 return Kind.Float;
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165 } else if (clazz == double.class || clazz == Double.class) {
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166 return Kind.Double;
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167 } else if (clazz == int[].class || clazz == long[].class || clazz == char[].class || clazz == byte[].class || clazz == float[].class || clazz == double[].class) {
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168 return Kind.Object;
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169 } else if (clazz == void.class) {
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170 return Kind.Void;
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171 } else {
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172 throw new IllegalArgumentException("Type not supported: " + clazz);
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173 }
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174 }
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175
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176 @SuppressWarnings("unused")
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177 public static Object libCall(Object argLoc, Object unused1, Object unused2) {
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178 throw GraalInternalError.shouldNotReachHere("GNFI libCall method must not be called");
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179 }
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180 }