Mercurial > projects > ldc
annotate ir/irstruct.cpp @ 945:03d7c4aac654
SWITCHED TO LLVM 2.5 !
Applied patch from ticket #129 to compile against latest LLVM. Thanks Frits van Bommel.
Fixed implicit return by asm block at the end of a function on x86-32. Other architectures will produce an error at the moment. Adding support for new targets is fairly simple.
Fixed return calling convention for complex numbers, ST and ST(1) were switched around.
Added some testcases.
I've run a dstress test and there are no regressions. However, the runtime does not seem to compile with symbolic debug information. -O3 -release -inline works well and is what I used for the dstress run. Tango does not compile, a small workaround is needed in tango.io.digest.Digest.Digest.hexDigest. See ticket #206 .
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Sun, 08 Feb 2009 05:26:54 +0100 |
parents | c62c6936635b |
children | 1714836f2c0b |
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" |
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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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12 #include "gen/llvmhelpers.h" |
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13 |
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14 IrInterface::IrInterface(BaseClass* b) |
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15 : vtblInitTy(llvm::OpaqueType::get()) |
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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; |
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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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36 vtblInitTy(llvm::OpaqueType::get()) |
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37 { |
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38 aggrdecl = aggr; |
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39 defaultFound = false; |
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40 anon = NULL; |
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41 index = 0; |
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42 |
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43 type = aggr->type; |
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44 defined = false; |
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45 constinited = false; |
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46 |
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47 interfaceInfos = NULL; |
137 | 48 vtbl = NULL; |
49 constVtbl = NULL; | |
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50 |
137 | 51 init = NULL; |
52 constInit = NULL; | |
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53 |
137 | 54 classInfo = NULL; |
55 constClassInfo = NULL; | |
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56 classInfoDeclared = false; |
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57 classInfoDefined = false; |
252 | 58 |
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59 packed = false; |
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60 |
252 | 61 dwarfComposite = NULL; |
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62 } |
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63 |
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64 IrStruct::~IrStruct() |
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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 |
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70 void IrStruct::pushAnon(bool isunion) |
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71 { |
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72 anon = new Anon(isunion, anon); |
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73 } |
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74 |
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75 ////////////////////////////////////////// |
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76 |
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77 void IrStruct::popAnon() |
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78 { |
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79 assert(anon); |
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80 |
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81 const LLType* BT; |
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82 |
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83 // get the anon type |
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84 if (anon->isunion) |
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85 { |
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86 // get biggest type in block |
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87 const LLType* biggest = getBiggestType(&anon->types[0], anon->types.size()); |
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88 std::vector<const LLType*> vec(1, biggest); |
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89 BT = LLStructType::get(vec, aggrdecl->ir.irStruct->packed); |
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90 } |
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91 else |
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92 { |
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93 // build a struct from the types |
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94 BT = LLStructType::get(anon->types, aggrdecl->ir.irStruct->packed); |
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95 } |
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96 |
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97 // pop anon |
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98 Anon* tmp = anon; |
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99 anon = anon->parent; |
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100 delete tmp; |
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101 |
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102 // is there a parent anon? |
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103 if (anon) |
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104 { |
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105 // make sure type gets pushed in the anon, not the main |
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106 anon->types.push_back(BT); |
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107 // index is only manipulated at the top level, anons use raw offsets |
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108 } |
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109 // no parent anon, finally add to aggrdecl |
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110 else |
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111 { |
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112 types.push_back(BT); |
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113 // only advance to next position if main is not a union |
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114 if (!aggrdecl->isUnionDeclaration()) |
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115 { |
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116 index++; |
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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 |
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123 void IrStruct::addVar(VarDeclaration * var) |
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124 { |
797
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125 TypeVector* tvec = &types; |
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126 if (anon) |
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127 { |
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128 // make sure type gets pushed in the anon, not the main |
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129 tvec = &anon->types; |
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130 |
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131 // set but don't advance index |
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132 var->ir.irField->index = index; |
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133 |
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134 // set offset in bytes from start of anon block |
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135 var->ir.irField->unionOffset = var->offset - var->offset2; |
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136 } |
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137 else if (aggrdecl->isUnionDeclaration()) |
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138 { |
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139 // set but don't advance index |
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140 var->ir.irField->index = index; |
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141 } |
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142 else |
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143 { |
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144 // set and advance index |
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145 var->ir.irField->index = index++; |
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146 } |
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147 |
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148 // add type |
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149 tvec->push_back(DtoType(var->type)); |
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150 |
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151 // add var |
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152 varDecls.push_back(var); |
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153 } |
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154 |
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155 ////////////////////////////////////////// |
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156 |
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157 const LLType* IrStruct::build() |
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158 { |
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159 // if types is empty, add a byte |
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160 if (types.empty()) |
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161 { |
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162 types.push_back(LLType::Int8Ty); |
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163 } |
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164 |
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165 // union type |
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166 if (aggrdecl->isUnionDeclaration()) |
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167 { |
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168 const LLType* biggest = getBiggestType(&types[0], types.size()); |
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169 std::vector<const LLType*> vec(1, biggest); |
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170 return LLStructType::get(vec, aggrdecl->ir.irStruct->packed); |
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171 } |
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172 // struct/class type |
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173 else |
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174 { |
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175 return LLStructType::get(types, aggrdecl->ir.irStruct->packed); |
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176 } |
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177 } |
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178 |
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179 void addZeros(std::vector<const llvm::Type*>& inits, size_t pos, size_t offset) |
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180 { |
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181 assert(offset > pos); |
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182 size_t diff = offset - pos; |
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183 |
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184 size_t sz; |
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185 |
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186 do |
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187 { |
797
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188 if (pos%8 == 0 && diff >= 8) |
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189 sz = 8; |
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190 else if (pos%4 == 0 && diff >= 4) |
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191 sz = 4; |
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192 else if (pos%2 == 0 && diff >= 2) |
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193 sz = 2; |
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194 else // if (pos % 1 == 0) |
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195 sz = 1; |
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196 inits.push_back(LLIntegerType::get(sz*8)); |
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197 pos += sz; |
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198 diff -= sz; |
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199 } while (pos < offset); |
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200 |
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201 assert(pos == offset); |
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202 } |
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203 |
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204 void addZeros(std::vector<llvm::Constant*>& inits, size_t pos, size_t offset) |
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205 { |
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206 assert(offset > pos); |
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207 size_t diff = offset - pos; |
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208 |
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209 size_t sz; |
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210 |
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211 do |
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212 { |
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213 if (pos%8 == 0 && diff >= 8) |
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214 sz = 8; |
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215 else if (pos%4 == 0 && diff >= 4) |
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216 sz = 4; |
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217 else if (pos%2 == 0 && diff >= 2) |
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218 sz = 2; |
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219 else // if (pos % 1 == 0) |
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220 sz = 1; |
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221 inits.push_back(LLConstant::getNullValue(LLIntegerType::get(sz*8))); |
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222 pos += sz; |
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223 diff -= sz; |
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224 } while (pos < offset); |
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225 |
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226 assert(pos == offset); |
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227 } |
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228 |
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229 // FIXME: body is exact copy of above |
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230 void addZeros(std::vector<llvm::Value*>& inits, size_t pos, size_t offset) |
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231 { |
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232 assert(offset > pos); |
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233 size_t diff = offset - pos; |
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234 |
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235 size_t sz; |
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236 |
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237 do |
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238 { |
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239 if (pos%8 == 0 && diff >= 8) |
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240 sz = 8; |
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241 else if (pos%4 == 0 && diff >= 4) |
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242 sz = 4; |
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243 else if (pos%2 == 0 && diff >= 2) |
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244 sz = 2; |
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245 else // if (pos % 1 == 0) |
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246 sz = 1; |
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247 inits.push_back(LLConstant::getNullValue(LLIntegerType::get(sz*8))); |
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248 pos += sz; |
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249 diff -= sz; |
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250 } while (pos < offset); |
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251 |
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252 assert(pos == offset); |
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253 } |
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254 |
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255 void IrStruct::buildDefaultConstInit(std::vector<llvm::Constant*>& inits) |
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256 { |
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257 assert(!defaultFound); |
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258 defaultFound = true; |
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259 |
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260 const llvm::StructType* structtype = isaStruct(aggrdecl->type->ir.type->get()); |
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261 Logger::cout() << "struct type: " << *structtype << '\n'; |
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262 |
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263 size_t lastoffset = 0; |
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264 size_t lastsize = 0; |
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265 |
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266 { |
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267 Logger::println("Find the default fields"); |
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268 LOG_SCOPE; |
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269 |
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270 // go through all vars and find the ones that contribute to the default |
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271 size_t nvars = varDecls.size(); |
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272 for (size_t i=0; i<nvars; i++) |
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273 { |
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274 VarDeclaration* var = varDecls[i]; |
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275 |
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276 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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277 |
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278 // only add vars that don't overlap |
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279 size_t offset = var->offset; |
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280 size_t size = var->type->size(); |
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281 if (offset >= lastoffset+lastsize) |
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282 { |
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283 Logger::println(" added"); |
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284 lastoffset = offset; |
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285 lastsize = size; |
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286 defVars.push_back(var); |
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287 } |
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288 } |
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289 } |
797
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290 |
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291 { |
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292 Logger::println("Build the default initializer"); |
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293 LOG_SCOPE; |
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294 |
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295 lastoffset = 0; |
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296 lastsize = 0; |
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297 |
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298 // go through the default vars and build the default constant initializer |
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299 // adding zeros along the way to live up to alignment expectations |
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300 size_t nvars = defVars.size(); |
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301 for (size_t i=0; i<nvars; i++) |
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302 { |
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303 VarDeclaration* var = defVars[i]; |
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304 |
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305 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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306 |
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307 // get offset and size |
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308 size_t offset = var->offset; |
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309 size_t size = var->type->size(); |
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310 |
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311 // is there space in between last last offset and this one? |
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312 // if so, fill it with zeros |
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313 if (offset > lastoffset+lastsize) |
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314 { |
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315 size_t pos = lastoffset + lastsize; |
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316 addZeros(inits, pos, offset); |
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317 } |
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318 |
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319 // add the field |
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320 // lazily default initialize |
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321 if (!var->ir.irField->constInit) |
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322 var->ir.irField->constInit = DtoConstInitializer(var->loc, var->type, var->init); |
797
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323 inits.push_back(var->ir.irField->constInit); |
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324 |
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325 lastoffset = offset; |
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326 lastsize = var->type->size(); |
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327 } |
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328 |
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329 // there might still be padding after the last one, make sure that is zeroed as well |
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330 // is there space in between last last offset and this one? |
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331 size_t structsize = getTypePaddedSize(structtype); |
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332 |
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333 if (structsize > lastoffset+lastsize) |
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334 { |
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335 size_t pos = lastoffset + lastsize; |
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336 addZeros(inits, pos, structsize); |
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337 } |
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338 } |
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339 } |
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340 |
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341 LLConstant* IrStruct::buildDefaultConstInit() |
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342 { |
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343 // doesn't work for classes, they add stuff before and maybe after data fields |
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344 assert(!aggrdecl->isClassDeclaration()); |
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345 |
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346 // initializer llvm constant list |
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347 std::vector<LLConstant*> inits; |
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348 |
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349 // just start with an empty list |
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350 buildDefaultConstInit(inits); |
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351 |
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352 // build the constant |
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353 // note that the type matches the initializer, not the aggregate in cases with unions |
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354 LLConstant* c = LLConstantStruct::get(inits, aggrdecl->ir.irStruct->packed); |
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355 Logger::cout() << "llvm constant: " << *c << '\n'; |
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356 // assert(0); |
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357 return c; |
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358 } |