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annotate graal/com.oracle.graal.hotspot.hsail/src/com/oracle/graal/hotspot/hsail/HSAILHotSpotBackend.java @ 12664:1fdecc36c8ac

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HSAIL updates to integrate recent changes to the providers infrastructure. Contributed-by: Tom Deneau <tom.deneau@amd.com>
author Doug Simon <doug.simon@oracle.com>
date Mon, 04 Nov 2013 17:17:08 +0100
parents 3b178baf3edb
children 5341a7fca039
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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
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62 @Override
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63 public boolean shouldAllocateRegisters() {
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64 return true;
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65 }
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66
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67 /**
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68 * Use the HSAIL register set when the compilation target is HSAIL.
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69 */
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70 @Override
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71 public FrameMap newFrameMap() {
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72 return new HSAILFrameMap(getCodeCache());
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73 }
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74
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75 @Override
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76 public LIRGenerator newLIRGenerator(StructuredGraph graph, FrameMap frameMap, CallingConvention cc, LIR lir) {
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77 return new HSAILHotSpotLIRGenerator(graph, getProviders(), getRuntime().getConfig(), frameMap, cc, lir);
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78 }
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79
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80 public String getPartialCodeString() {
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81 if (codeBuffer == null) {
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82 return "";
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83 }
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84 byte[] data = codeBuffer.copyData(0, codeBuffer.position());
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85 return (data == null ? "" : new String(data));
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86 }
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87
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88 class HotSpotFrameContext implements FrameContext {
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89
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90 @Override
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91 public void enter(TargetMethodAssembler tasm) {
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92 Debug.log("Nothing to do here");
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93 }
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94
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95 @Override
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96 public void leave(TargetMethodAssembler tasm) {
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97 Debug.log("Nothing to do here");
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98 }
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99 }
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100
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101 @Override
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102 protected AbstractAssembler createAssembler(FrameMap frameMap) {
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103 return new HSAILAssembler(getTarget());
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104 }
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105
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106 @Override
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107 public TargetMethodAssembler newAssembler(LIRGenerator lirGen, CompilationResult compilationResult) {
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108 FrameMap frameMap = lirGen.frameMap;
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109 AbstractAssembler masm = createAssembler(frameMap);
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110 HotSpotFrameContext frameContext = new HotSpotFrameContext();
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111 TargetMethodAssembler tasm = new TargetMethodAssembler(getCodeCache(), getForeignCalls(), frameMap, masm, frameContext, compilationResult);
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112 tasm.setFrameSize(frameMap.frameSize());
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113 return tasm;
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114 }
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115
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116 @Override
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117 public void emitCode(TargetMethodAssembler tasm, LIRGenerator lirGen, ResolvedJavaMethod method) {
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118 assert method != null : lirGen.getGraph() + " is not associated with a method";
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119 // Emit the prologue.
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120 codeBuffer = tasm.asm.codeBuffer;
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121 codeBuffer.emitString0("version 0:95: $full : $large;");
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122 codeBuffer.emitString("");
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123 Signature signature = method.getSignature();
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124 int sigParamCount = signature.getParameterCount(false);
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125 // We're subtracting 1 because we're not making the final gid as a parameter.
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126 int nonConstantParamCount = sigParamCount - 1;
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127 boolean isStatic = (Modifier.isStatic(method.getModifiers()));
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128 // Determine if this is an object lambda.
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129 boolean isObjectLambda = true;
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130 if (signature.getParameterType(nonConstantParamCount, null).getKind() == Kind.Int) {
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131 isObjectLambda = false;
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132 } else {
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133 // Add space for gid int reg.
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134 nonConstantParamCount++;
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135 }
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136
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137 // If this is an instance method, include mappings for the "this" parameter
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138 // as the first parameter.
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139 if (!isStatic) {
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140 nonConstantParamCount++;
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141 }
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142 // Add in any "constant" parameters (currently none).
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143 int totalParamCount = nonConstantParamCount;
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144 JavaType[] paramtypes = new JavaType[totalParamCount];
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145 String[] paramNames = new String[totalParamCount];
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146 int pidx = 0;
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147 for (int i = 0; i < totalParamCount; i++) {
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148 MetaAccessProvider metaAccess = getProviders().getMetaAccess();
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149 if (i == 0 && !isStatic) {
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150 paramtypes[i] = metaAccess.lookupJavaType(Object.class);
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151 paramNames[i] = "%_this";
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152 } else if (i < nonConstantParamCount) {
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153 if (isObjectLambda && (i == (nonConstantParamCount))) {
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154 // Set up the gid register mapping.
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155 paramtypes[i] = metaAccess.lookupJavaType(int.class);
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156 paramNames[i] = "%_gid";
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157 } else {
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158 paramtypes[i] = signature.getParameterType(pidx++, null);
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159 paramNames[i] = "%_arg" + i;
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160 }
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161 }
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162 }
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163 codeBuffer.emitString0("// " + (isStatic ? "static" : "instance") + " method " + method);
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164 codeBuffer.emitString("");
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165 codeBuffer.emitString0("kernel &run (");
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166 codeBuffer.emitString("");
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167 FrameMap frameMap = tasm.frameMap;
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168 RegisterConfig regConfig = frameMap.registerConfig;
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169 // Build list of param types which does include the gid (for cc register mapping query).
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170 JavaType[] ccParamTypes = new JavaType[nonConstantParamCount + 1];
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171 // Include the gid.
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172 System.arraycopy(paramtypes, 0, ccParamTypes, 0, nonConstantParamCount);
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173 // Last entry comes from the signature.
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174 ccParamTypes[ccParamTypes.length - 1] = signature.getParameterType(sigParamCount - 1, null);
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175 CallingConvention cc = regConfig.getCallingConvention(JavaCallee, null, ccParamTypes, getTarget(), false);
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176 /**
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177 * Compute the hsail size mappings up to but not including the last non-constant parameter
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178 * (which is the gid).
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179 *
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180 */
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181 String[] paramHsailSizes = new String[totalParamCount];
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182 for (int i = 0; i < totalParamCount; i++) {
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183 String paramtypeStr = paramtypes[i].toString();
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184 String sizeStr = paramTypeMap.get(paramtypeStr);
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185 // Catch all for any unmapped paramtype that is u64 (address of an object).
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186 paramHsailSizes[i] = (sizeStr != null ? sizeStr : "u64");
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187 }
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188 // Emit the kernel function parameters.
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189 for (int i = 0; i < totalParamCount; i++) {
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190 String str = "kernarg_" + paramHsailSizes[i] + " " + paramNames[i];
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191 if (i != totalParamCount - 1) {
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192 str += ",";
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193 }
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194 codeBuffer.emitString(str);
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195 }
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196 codeBuffer.emitString(") {");
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197
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198 /*
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199 * End of parameters start of prolog code. Emit the load instructions for loading of the
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200 * kernel non-constant parameters into registers. The constant class parameters will not be
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201 * loaded up front but will be loaded as needed.
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202 */
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203 for (int i = 0; i < nonConstantParamCount; i++) {
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204 codeBuffer.emitString("ld_kernarg_" + paramHsailSizes[i] + " " + HSAIL.mapRegister(cc.getArgument(i)) + ", [" + paramNames[i] + "];");
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205 }
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206
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207 /*
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208 * Emit the workitemaid instruction for loading the hidden gid parameter. This is assigned
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209 * the register as if it were the last of the nonConstant parameters.
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210 */
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211 String workItemReg = "$s" + Integer.toString(asRegister(cc.getArgument(nonConstantParamCount)).encoding());
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212 codeBuffer.emitString("workitemabsid_u32 " + workItemReg + ", 0;");
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213
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214 /*
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215 * Note the logic used for this spillseg size is to leave space and then go back and patch
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216 * in the correct size once we have generated all the instructions. This should probably be
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217 * done in a more robust way by implementing something like codeBuffer.insertString.
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218 */
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219 int spillsegDeclarationPosition = codeBuffer.position() + 1;
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220 String spillsegTemplate = "align 4 spill_u8 %spillseg[123456];";
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221 codeBuffer.emitString(spillsegTemplate);
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222 // Emit object array load prologue here.
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223 if (isObjectLambda) {
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224 final int arrayElementsOffset = 24;
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225 String iterationObjArgReg = HSAIL.mapRegister(cc.getArgument(nonConstantParamCount - 1));
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226 String tmpReg = workItemReg.replace("s", "d"); // "$d1";
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227 // Convert gid to long.
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228 codeBuffer.emitString("cvt_u64_s32 " + tmpReg + ", " + workItemReg + "; // Convert gid to long");
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229 // Adjust index for sizeof ref.
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230 codeBuffer.emitString("mul_u64 " + tmpReg + ", " + tmpReg + ", " + 8 + "; // Adjust index for sizeof ref");
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231 // Adjust for actual data start.
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232 codeBuffer.emitString("add_u64 " + tmpReg + ", " + tmpReg + ", " + arrayElementsOffset + "; // Adjust for actual elements data start");
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233 // Add to array ref ptr.
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234 codeBuffer.emitString("add_u64 " + tmpReg + ", " + tmpReg + ", " + iterationObjArgReg + "; // Add to array ref ptr");
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235 // Load the object into the parameter reg.
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236 codeBuffer.emitString("ld_global_u64 " + iterationObjArgReg + ", " + "[" + tmpReg + "]" + "; // Load from array element into parameter reg");
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237 }
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238 // Prologue done, Emit code for the LIR.
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239 lirGen.lir.emitCode(tasm);
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240 // Now that code is emitted go back and figure out what the upper Bound stack size was.
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241 long maxStackSize = ((HSAILAssembler) tasm.asm).upperBoundStackSize();
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242 String spillsegStringFinal;
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243 if (maxStackSize == 0) {
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244 // If no spilling, get rid of spillseg declaration.
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245 char[] array = new char[spillsegTemplate.length()];
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246 Arrays.fill(array, ' ');
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247 spillsegStringFinal = new String(array);
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248 } else {
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249 spillsegStringFinal = spillsegTemplate.replace("123456", String.format("%6d", maxStackSize));
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250 }
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251 codeBuffer.emitString(spillsegStringFinal, spillsegDeclarationPosition);
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252 // Emit the epilogue.
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253 codeBuffer.emitString0("};");
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254 codeBuffer.emitString("");
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255 }
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256 }