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annotate graal/com.oracle.graal.hotspot.hsail/src/com/oracle/graal/hotspot/hsail/HSAILHotSpotBackend.java @ 13229:325b4e4efb60

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added CompilationResultBuilderFactory to support peep-hole instrumentation of methods as their code is emitted
author Doug Simon <doug.simon@oracle.com>
date Tue, 03 Dec 2013 16:33:41 +0100
parents 1a66453f73db
children 7e237378923d
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1 /*
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2 * Copyright (c) 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.graal.hotspot.hsail;
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24
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25 import static com.oracle.graal.api.code.CallingConvention.Type.*;
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26 import static com.oracle.graal.api.code.ValueUtil.*;
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27
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28 import java.lang.reflect.*;
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29 import java.util.*;
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30
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31 import com.oracle.graal.api.code.*;
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32 import com.oracle.graal.api.meta.*;
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33 import com.oracle.graal.asm.*;
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34 import com.oracle.graal.asm.hsail.*;
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35 import com.oracle.graal.compiler.gen.*;
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36 import com.oracle.graal.debug.*;
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37 import com.oracle.graal.hotspot.*;
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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.lir.*;
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41 import com.oracle.graal.lir.asm.*;
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42 import com.oracle.graal.lir.hsail.*;
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43 import com.oracle.graal.nodes.*;
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44
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45 /**
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46 * HSAIL specific backend.
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47 */
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48 public class HSAILHotSpotBackend extends HotSpotBackend {
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49
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50 private Map<String, String> paramTypeMap = new HashMap<>();
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51 private Buffer codeBuffer;
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52
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53 public HSAILHotSpotBackend(HotSpotGraalRuntime runtime, HotSpotProviders providers) {
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54 super(runtime, providers);
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55 paramTypeMap.put("HotSpotResolvedPrimitiveType<int>", "s32");
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56 paramTypeMap.put("HotSpotResolvedPrimitiveType<float>", "f32");
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57 paramTypeMap.put("HotSpotResolvedPrimitiveType<double>", "f64");
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58 paramTypeMap.put("HotSpotResolvedPrimitiveType<long>", "s64");
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59 }
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60
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61 @Override
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62 public boolean shouldAllocateRegisters() {
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63 return true;
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64 }
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65
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66 @Override
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67 public void completeInitialization() {
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68 final HotSpotProviders providers = getProviders();
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69 HotSpotVMConfig config = getRuntime().getConfig();
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70 final HotSpotLoweringProvider lowerer = (HotSpotLoweringProvider) providers.getLowerer();
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71 lowerer.initialize(providers, config);
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72 }
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73
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74 /**
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75 * Use the HSAIL register set when the compilation target is HSAIL.
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76 */
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77 @Override
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78 public FrameMap newFrameMap() {
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79 return new HSAILFrameMap(getCodeCache());
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80 }
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81
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82 @Override
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83 public LIRGenerator newLIRGenerator(StructuredGraph graph, FrameMap frameMap, CallingConvention cc, LIR lir) {
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84 return new HSAILHotSpotLIRGenerator(graph, getProviders(), getRuntime().getConfig(), frameMap, cc, lir);
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85 }
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86
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87 public String getPartialCodeString() {
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88 if (codeBuffer == null) {
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89 return "";
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90 }
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91 byte[] data = codeBuffer.copyData(0, codeBuffer.position());
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92 return (data == null ? "" : new String(data));
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93 }
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94
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95 class HotSpotFrameContext implements FrameContext {
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96
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97 @Override
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98 public void enter(CompilationResultBuilder crb) {
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99 Debug.log("Nothing to do here");
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100 }
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101
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102 @Override
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103 public void leave(CompilationResultBuilder crb) {
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104 Debug.log("Nothing to do here");
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105 }
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106 }
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107
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108 @Override
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109 protected AbstractAssembler createAssembler(FrameMap frameMap) {
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110 return new HSAILAssembler(getTarget());
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111 }
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112
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113 @Override
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114 public CompilationResultBuilder newCompilationResultBuilder(LIRGenerator lirGen, CompilationResult compilationResult, CompilationResultBuilderFactory factory) {
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115 FrameMap frameMap = lirGen.frameMap;
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116 AbstractAssembler masm = createAssembler(frameMap);
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117 HotSpotFrameContext frameContext = new HotSpotFrameContext();
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118 CompilationResultBuilder crb = factory.createBuilder(getCodeCache(), getForeignCalls(), frameMap, masm, frameContext, compilationResult);
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119 crb.setFrameSize(frameMap.frameSize());
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120 return crb;
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121 }
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122
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123 @Override
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124 public void emitCode(CompilationResultBuilder crb, LIRGenerator lirGen, ResolvedJavaMethod method) {
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125 assert method != null : lirGen.getGraph() + " is not associated with a method";
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126 // Emit the prologue.
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127 codeBuffer = crb.asm.codeBuffer;
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128 codeBuffer.emitString0("version 0:95: $full : $large;");
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129 codeBuffer.emitString("");
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130
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131 Signature signature = method.getSignature();
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132 int sigParamCount = signature.getParameterCount(false);
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133 // We're subtracting 1 because we're not making the final gid as a parameter.
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134
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135 int nonConstantParamCount = sigParamCount - 1;
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136 boolean isStatic = (Modifier.isStatic(method.getModifiers()));
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137 // Determine if this is an object lambda.
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138 boolean isObjectLambda = true;
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139
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140 if (signature.getParameterType(nonConstantParamCount, null).getKind() == Kind.Int) {
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141 isObjectLambda = false;
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142 } else {
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143 // Add space for gid int reg.
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144 nonConstantParamCount++;
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145 }
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146
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147 // If this is an instance method, include mappings for the "this" parameter
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148 // as the first parameter.
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149 if (!isStatic) {
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150 nonConstantParamCount++;
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151 }
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152 // Add in any "constant" parameters (currently none).
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153 int totalParamCount = nonConstantParamCount;
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154 JavaType[] paramtypes = new JavaType[totalParamCount];
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155 String[] paramNames = new String[totalParamCount];
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156 int pidx = 0;
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157 MetaAccessProvider metaAccess = getProviders().getMetaAccess();
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158 for (int i = 0; i < totalParamCount; i++) {
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159 if (i == 0 && !isStatic) {
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160 paramtypes[i] = metaAccess.lookupJavaType(Object.class);
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161 paramNames[i] = "%_this";
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162 } else if (i < nonConstantParamCount) {
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163 if (isObjectLambda && (i == (nonConstantParamCount))) {
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164 // Set up the gid register mapping.
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165 paramtypes[i] = metaAccess.lookupJavaType(int.class);
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166 paramNames[i] = "%_gid";
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167 } else {
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168 paramtypes[i] = signature.getParameterType(pidx++, null);
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169 paramNames[i] = "%_arg" + i;
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170 }
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171 }
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172 }
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173
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174 codeBuffer.emitString0("// " + (isStatic ? "static" : "instance") + " method " + method);
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175 codeBuffer.emitString("");
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176 codeBuffer.emitString0("kernel &run (");
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177 codeBuffer.emitString("");
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178
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179 FrameMap frameMap = crb.frameMap;
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180 RegisterConfig regConfig = frameMap.registerConfig;
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181 // Build list of param types which does include the gid (for cc register mapping query).
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182 JavaType[] ccParamTypes = new JavaType[nonConstantParamCount + 1];
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183 // Include the gid.
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184 System.arraycopy(paramtypes, 0, ccParamTypes, 0, nonConstantParamCount);
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185
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186 // Last entry is always int (its register gets used in the workitemabsid instruction)
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187 // this is true even for object stream labmdas
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188 if (sigParamCount > 0) {
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189 ccParamTypes[ccParamTypes.length - 1] = metaAccess.lookupJavaType(int.class);
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190 }
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191 CallingConvention cc = regConfig.getCallingConvention(JavaCallee, null, ccParamTypes, getTarget(), false);
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192
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193 /**
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194 * Compute the hsail size mappings up to but not including the last non-constant parameter
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195 * (which is the gid).
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196 *
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197 */
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198 String[] paramHsailSizes = new String[totalParamCount];
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199 for (int i = 0; i < totalParamCount; i++) {
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200 String paramtypeStr = paramtypes[i].toString();
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201 String sizeStr = paramTypeMap.get(paramtypeStr);
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202 // Catch all for any unmapped paramtype that is u64 (address of an object).
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203 paramHsailSizes[i] = (sizeStr != null ? sizeStr : "u64");
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204 }
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205 // Emit the kernel function parameters.
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206 for (int i = 0; i < totalParamCount; i++) {
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207 String str = "kernarg_" + paramHsailSizes[i] + " " + paramNames[i];
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208
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209 if (i != totalParamCount - 1) {
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210 str += ",";
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211 }
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212 codeBuffer.emitString(str);
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213 }
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214 codeBuffer.emitString(") {");
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215
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216 /*
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217 * End of parameters start of prolog code. Emit the load instructions for loading of the
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218 * kernel non-constant parameters into registers. The constant class parameters will not be
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219 * loaded up front but will be loaded as needed.
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220 */
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221 for (int i = 0; i < nonConstantParamCount; i++) {
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222 codeBuffer.emitString("ld_kernarg_" + paramHsailSizes[i] + " " + HSAIL.mapRegister(cc.getArgument(i)) + ", [" + paramNames[i] + "];");
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223 }
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224
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225 /*
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226 * Emit the workitemaid instruction for loading the hidden gid parameter. This is assigned
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227 * the register as if it were the last of the nonConstant parameters.
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228 */
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229 String workItemReg = "$s" + Integer.toString(asRegister(cc.getArgument(nonConstantParamCount)).encoding());
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230 codeBuffer.emitString("workitemabsid_u32 " + workItemReg + ", 0;");
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231
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232 /*
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233 * Note the logic used for this spillseg size is to leave space and then go back and patch
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234 * in the correct size once we have generated all the instructions. This should probably be
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235 * done in a more robust way by implementing something like codeBuffer.insertString.
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236 */
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237 int spillsegDeclarationPosition = codeBuffer.position() + 1;
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238 String spillsegTemplate = "align 4 spill_u8 %spillseg[123456];";
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239 codeBuffer.emitString(spillsegTemplate);
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240 // Emit object array load prologue here.
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241 if (isObjectLambda) {
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242 boolean useCompressedOops = getRuntime().getConfig().useCompressedOops;
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243 final int arrayElementsOffset = HotSpotGraalRuntime.getArrayBaseOffset(Kind.Object);
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244 String iterationObjArgReg = HSAIL.mapRegister(cc.getArgument(nonConstantParamCount - 1));
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245 // iterationObjArgReg will be the highest $d register in use (it is the last parameter)
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246 // so tempReg can be the next higher $d register
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247 String tmpReg = "$d" + (asRegister(cc.getArgument(nonConstantParamCount - 1)).encoding() + 1);
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248 // Convert gid to long.
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249 codeBuffer.emitString("cvt_u64_s32 " + tmpReg + ", " + workItemReg + "; // Convert gid to long");
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250 // Adjust index for sizeof ref. Where to pull this size from?
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251 codeBuffer.emitString("mul_u64 " + tmpReg + ", " + tmpReg + ", " + (useCompressedOops ? 4 : 8) + "; // Adjust index for sizeof ref");
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252 // Adjust for actual data start.
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253 codeBuffer.emitString("add_u64 " + tmpReg + ", " + tmpReg + ", " + arrayElementsOffset + "; // Adjust for actual elements data start");
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254 // Add to array ref ptr.
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255 codeBuffer.emitString("add_u64 " + tmpReg + ", " + tmpReg + ", " + iterationObjArgReg + "; // Add to array ref ptr");
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256 // Load the object into the parameter reg.
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257 if (useCompressedOops) {
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258
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259 // Load u32 into the d 64 reg since it will become an object address
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260 codeBuffer.emitString("ld_global_u32 " + tmpReg + ", " + "[" + tmpReg + "]" + "; // Load compressed ptr from array");
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261
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262 long narrowOopBase = getRuntime().getConfig().narrowOopBase;
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263 long narrowOopShift = getRuntime().getConfig().narrowOopShift;
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264
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265 if (narrowOopBase == 0 && narrowOopShift == 0) {
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266 // No more calculation to do, mov to target register
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267 codeBuffer.emitString("mov_b64 " + iterationObjArgReg + ", " + tmpReg + "; // no shift or base addition");
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268 } else {
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269 if (narrowOopBase == 0) {
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270 codeBuffer.emitString("shl_u64 " + iterationObjArgReg + ", " + tmpReg + ", " + narrowOopShift + "; // do narrowOopShift");
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271 } else if (narrowOopShift == 0) {
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272 codeBuffer.emitString("add_u64 " + iterationObjArgReg + ", " + tmpReg + ", " + narrowOopBase + "; // add narrowOopBase");
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273 } else {
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274 codeBuffer.emitString("mad_u64 " + iterationObjArgReg + ", " + tmpReg + ", " + (1 << narrowOopShift) + ", " + narrowOopBase + "; // shift and add narrowOopBase");
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275 }
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276 }
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277
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278 } else {
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279 codeBuffer.emitString("ld_global_u64 " + iterationObjArgReg + ", " + "[" + tmpReg + "]" + "; // Load from array element into parameter reg");
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280 }
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281 }
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282 // Prologue done, Emit code for the LIR.
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283 lirGen.lir.emitCode(crb);
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284 // Now that code is emitted go back and figure out what the upper Bound stack size was.
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285 long maxStackSize = ((HSAILAssembler) crb.asm).upperBoundStackSize();
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286 String spillsegStringFinal;
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287 if (maxStackSize == 0) {
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288 // If no spilling, get rid of spillseg declaration.
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289 char[] array = new char[spillsegTemplate.length()];
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290 Arrays.fill(array, ' ');
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291 spillsegStringFinal = new String(array);
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292 } else {
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293 spillsegStringFinal = spillsegTemplate.replace("123456", String.format("%6d", maxStackSize));
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294 }
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295 codeBuffer.emitString(spillsegStringFinal, spillsegDeclarationPosition);
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296 // Emit the epilogue.
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297 codeBuffer.emitString0("};");
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298 codeBuffer.emitString("");
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299 }
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300 }