Mercurial > projects > ldc
annotate ir/irstruct.cpp @ 1200:3171f67ad006
Remove reference to llvm::cl::AllowInverse enum value which was removed in
LLVM trunk.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Wed, 08 Apr 2009 23:05:30 +0200 |
parents | 1714836f2c0b |
children | 79758fd2f48a |
rev | line source |
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136
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1 #include "gen/llvm.h" |
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2 |
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3 #include "mtype.h" |
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4 #include "aggregate.h" |
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5 #include "declaration.h" |
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6 #include "init.h" |
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7 |
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8 #include "ir/irstruct.h" |
157
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[svn r173] moved IR state previously stored in Type into IrType and a Type->IrType map; fixes #7
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9 #include "gen/irstate.h" |
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10 #include "gen/tollvm.h" |
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11 #include "gen/logger.h" |
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Changed aggregate field initializers to be created lazily, fixes problem with static void arrays in aggregates.
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12 #include "gen/llvmhelpers.h" |
136
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13 |
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[svn r328] Fixed an issue with interfaces where the vtable type of a interface implemented could be invalid. Fixes several tango modules like, FileStream, ServerSocket
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14 IrInterface::IrInterface(BaseClass* b) |
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15 : vtblInitTy(llvm::OpaqueType::get()) |
136
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16 { |
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17 base = b; |
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18 decl = b->base; |
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19 vtblInit = NULL; |
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20 vtbl = NULL; |
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21 infoTy = NULL; |
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22 infoInit = NULL; |
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23 info = NULL; |
137 | 24 |
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25 index = 0; |
136
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26 } |
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27 |
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28 ////////////////////////////////////////////////////////////////////////////// |
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29 ////////////////////////////////////////////////////////////////////////////// |
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30 ////////////////////////////////////////////////////////////////////////////// |
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31 |
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32 IrStruct::IrStruct(AggregateDeclaration* aggr) |
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33 : initOpaque(llvm::OpaqueType::get()), |
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34 classInfoOpaque(llvm::OpaqueType::get()), |
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35 vtblTy(llvm::OpaqueType::get()), |
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Mostly rewrite debug info generation in terms of llvm/Analysis/DebugInfo.h.
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36 vtblInitTy(llvm::OpaqueType::get()), |
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37 diCompositeType(NULL) |
136
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38 { |
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39 aggrdecl = aggr; |
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40 defaultFound = false; |
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41 anon = NULL; |
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42 index = 0; |
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43 |
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44 type = aggr->type; |
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45 defined = false; |
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46 constinited = false; |
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47 |
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48 interfaceInfos = NULL; |
137 | 49 vtbl = NULL; |
50 constVtbl = NULL; | |
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51 |
137 | 52 init = NULL; |
53 constInit = NULL; | |
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54 |
137 | 55 classInfo = NULL; |
56 constClassInfo = NULL; | |
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57 classInfoDeclared = false; |
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58 classInfoDefined = false; |
252 | 59 |
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60 packed = false; |
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61 } |
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62 |
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63 IrStruct::~IrStruct() |
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64 { |
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65 } |
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66 |
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67 ////////////////////////////////////////// |
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68 |
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69 void IrStruct::pushAnon(bool isunion) |
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70 { |
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71 anon = new Anon(isunion, anon); |
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72 } |
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73 |
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74 ////////////////////////////////////////// |
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75 |
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76 void IrStruct::popAnon() |
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77 { |
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78 assert(anon); |
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79 |
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80 const LLType* BT; |
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81 |
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82 // get the anon type |
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83 if (anon->isunion) |
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84 { |
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85 // get biggest type in block |
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86 const LLType* biggest = getBiggestType(&anon->types[0], anon->types.size()); |
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87 std::vector<const LLType*> vec(1, biggest); |
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88 BT = LLStructType::get(vec, aggrdecl->ir.irStruct->packed); |
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89 } |
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90 else |
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91 { |
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92 // build a struct from the types |
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93 BT = LLStructType::get(anon->types, aggrdecl->ir.irStruct->packed); |
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94 } |
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95 |
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96 // pop anon |
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97 Anon* tmp = anon; |
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98 anon = anon->parent; |
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99 delete tmp; |
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100 |
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101 // is there a parent anon? |
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102 if (anon) |
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103 { |
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104 // make sure type gets pushed in the anon, not the main |
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105 anon->types.push_back(BT); |
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106 // index is only manipulated at the top level, anons use raw offsets |
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107 } |
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108 // no parent anon, finally add to aggrdecl |
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109 else |
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110 { |
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111 types.push_back(BT); |
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112 // only advance to next position if main is not a union |
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113 if (!aggrdecl->isUnionDeclaration()) |
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114 { |
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115 index++; |
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116 } |
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117 } |
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118 } |
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119 |
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120 ////////////////////////////////////////// |
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121 |
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122 void IrStruct::addVar(VarDeclaration * var) |
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123 { |
797
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124 TypeVector* tvec = &types; |
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125 if (anon) |
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126 { |
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127 // make sure type gets pushed in the anon, not the main |
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128 tvec = &anon->types; |
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129 |
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130 // set but don't advance index |
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131 var->ir.irField->index = index; |
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132 |
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133 // set offset in bytes from start of anon block |
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134 var->ir.irField->unionOffset = var->offset - var->offset2; |
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135 } |
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136 else if (aggrdecl->isUnionDeclaration()) |
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137 { |
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138 // set but don't advance index |
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139 var->ir.irField->index = index; |
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140 } |
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141 else |
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142 { |
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143 // set and advance index |
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144 var->ir.irField->index = index++; |
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145 } |
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146 |
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147 // add type |
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148 tvec->push_back(DtoType(var->type)); |
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149 |
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150 // add var |
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151 varDecls.push_back(var); |
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152 } |
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153 |
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154 ////////////////////////////////////////// |
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155 |
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156 const LLType* IrStruct::build() |
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157 { |
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158 // if types is empty, add a byte |
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159 if (types.empty()) |
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160 { |
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161 types.push_back(LLType::Int8Ty); |
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162 } |
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163 |
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164 // union type |
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165 if (aggrdecl->isUnionDeclaration()) |
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166 { |
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167 const LLType* biggest = getBiggestType(&types[0], types.size()); |
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168 std::vector<const LLType*> vec(1, biggest); |
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169 return LLStructType::get(vec, aggrdecl->ir.irStruct->packed); |
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170 } |
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171 // struct/class type |
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172 else |
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173 { |
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174 return LLStructType::get(types, aggrdecl->ir.irStruct->packed); |
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175 } |
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176 } |
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177 |
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178 void addZeros(std::vector<const llvm::Type*>& inits, size_t pos, size_t offset) |
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179 { |
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180 assert(offset > pos); |
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181 size_t diff = offset - pos; |
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182 |
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183 size_t sz; |
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184 |
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185 do |
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186 { |
797
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187 if (pos%8 == 0 && diff >= 8) |
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188 sz = 8; |
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189 else if (pos%4 == 0 && diff >= 4) |
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190 sz = 4; |
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191 else if (pos%2 == 0 && diff >= 2) |
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192 sz = 2; |
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193 else // if (pos % 1 == 0) |
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194 sz = 1; |
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195 inits.push_back(LLIntegerType::get(sz*8)); |
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196 pos += sz; |
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197 diff -= sz; |
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198 } while (pos < offset); |
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199 |
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200 assert(pos == offset); |
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201 } |
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202 |
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203 void addZeros(std::vector<llvm::Constant*>& inits, size_t pos, size_t offset) |
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204 { |
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205 assert(offset > pos); |
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206 size_t diff = offset - pos; |
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207 |
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208 size_t sz; |
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209 |
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210 do |
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211 { |
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212 if (pos%8 == 0 && diff >= 8) |
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213 sz = 8; |
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214 else if (pos%4 == 0 && diff >= 4) |
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215 sz = 4; |
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216 else if (pos%2 == 0 && diff >= 2) |
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217 sz = 2; |
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218 else // if (pos % 1 == 0) |
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219 sz = 1; |
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220 inits.push_back(LLConstant::getNullValue(LLIntegerType::get(sz*8))); |
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221 pos += sz; |
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222 diff -= sz; |
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223 } while (pos < offset); |
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224 |
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225 assert(pos == offset); |
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226 } |
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227 |
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228 // FIXME: body is exact copy of above |
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229 void addZeros(std::vector<llvm::Value*>& inits, size_t pos, size_t offset) |
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230 { |
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231 assert(offset > pos); |
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232 size_t diff = offset - pos; |
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233 |
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234 size_t sz; |
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235 |
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236 do |
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237 { |
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238 if (pos%8 == 0 && diff >= 8) |
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239 sz = 8; |
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240 else if (pos%4 == 0 && diff >= 4) |
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241 sz = 4; |
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242 else if (pos%2 == 0 && diff >= 2) |
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243 sz = 2; |
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244 else // if (pos % 1 == 0) |
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245 sz = 1; |
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246 inits.push_back(LLConstant::getNullValue(LLIntegerType::get(sz*8))); |
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247 pos += sz; |
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248 diff -= sz; |
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249 } while (pos < offset); |
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250 |
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251 assert(pos == offset); |
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252 } |
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253 |
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254 void IrStruct::buildDefaultConstInit(std::vector<llvm::Constant*>& inits) |
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255 { |
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256 assert(!defaultFound); |
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257 defaultFound = true; |
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258 |
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259 const llvm::StructType* structtype = isaStruct(aggrdecl->type->ir.type->get()); |
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260 Logger::cout() << "struct type: " << *structtype << '\n'; |
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261 |
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262 size_t lastoffset = 0; |
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263 size_t lastsize = 0; |
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264 |
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265 { |
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266 Logger::println("Find the default fields"); |
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267 LOG_SCOPE; |
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268 |
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269 // go through all vars and find the ones that contribute to the default |
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270 size_t nvars = varDecls.size(); |
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271 for (size_t i=0; i<nvars; i++) |
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272 { |
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273 VarDeclaration* var = varDecls[i]; |
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274 |
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275 Logger::println("field %s %s = %s : +%u", var->type->toChars(), var->toChars(), var->init ? var->init->toChars() : var->type->defaultInit(var->loc)->toChars(), var->offset); |
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276 |
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277 // only add vars that don't overlap |
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278 size_t offset = var->offset; |
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279 size_t size = var->type->size(); |
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280 if (offset >= lastoffset+lastsize) |
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281 { |
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282 Logger::println(" added"); |
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283 lastoffset = offset; |
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284 lastsize = size; |
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285 defVars.push_back(var); |
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286 } |
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287 } |
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288 } |
797
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289 |
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290 { |
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291 Logger::println("Build the default initializer"); |
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292 LOG_SCOPE; |
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293 |
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294 lastoffset = 0; |
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295 lastsize = 0; |
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296 |
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297 // go through the default vars and build the default constant initializer |
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298 // adding zeros along the way to live up to alignment expectations |
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299 size_t nvars = defVars.size(); |
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300 for (size_t i=0; i<nvars; i++) |
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301 { |
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302 VarDeclaration* var = defVars[i]; |
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303 |
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304 Logger::println("field %s %s = %s : +%u", var->type->toChars(), var->toChars(), var->init ? var->init->toChars() : var->type->defaultInit(var->loc)->toChars(), var->offset); |
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305 |
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306 // get offset and size |
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307 size_t offset = var->offset; |
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308 size_t size = var->type->size(); |
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309 |
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310 // is there space in between last last offset and this one? |
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311 // if so, fill it with zeros |
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312 if (offset > lastoffset+lastsize) |
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313 { |
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314 size_t pos = lastoffset + lastsize; |
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315 addZeros(inits, pos, offset); |
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316 } |
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317 |
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318 // add the field |
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319 // lazily default initialize |
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320 if (!var->ir.irField->constInit) |
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321 var->ir.irField->constInit = DtoConstInitializer(var->loc, var->type, var->init); |
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322 inits.push_back(var->ir.irField->constInit); |
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323 |
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324 lastoffset = offset; |
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325 lastsize = var->type->size(); |
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326 } |
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327 |
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328 // there might still be padding after the last one, make sure that is zeroed as well |
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329 // is there space in between last last offset and this one? |
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SWITCHED TO LLVM 2.5 !
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|
330 size_t structsize = getTypePaddedSize(structtype); |
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331 |
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332 if (structsize > lastoffset+lastsize) |
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333 { |
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334 size_t pos = lastoffset + lastsize; |
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335 addZeros(inits, pos, structsize); |
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336 } |
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337 } |
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338 } |
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339 |
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340 LLConstant* IrStruct::buildDefaultConstInit() |
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341 { |
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342 // doesn't work for classes, they add stuff before and maybe after data fields |
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343 assert(!aggrdecl->isClassDeclaration()); |
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344 |
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345 // initializer llvm constant list |
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346 std::vector<LLConstant*> inits; |
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347 |
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348 // just start with an empty list |
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349 buildDefaultConstInit(inits); |
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350 |
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351 // build the constant |
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352 // note that the type matches the initializer, not the aggregate in cases with unions |
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353 LLConstant* c = LLConstantStruct::get(inits, aggrdecl->ir.irStruct->packed); |
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354 Logger::cout() << "llvm constant: " << *c << '\n'; |
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355 // assert(0); |
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356 return c; |
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357 } |