Mercurial > projects > ldc
annotate gen/functions.cpp @ 240:0db62b770a49 trunk
[svn r257] Fixed: array .sort and .reverse runtime code was incorrect.
Fixed: most runtime calls did not get correct param attrs.
| author | lindquist |
|---|---|
| date | Mon, 09 Jun 2008 00:01:10 +0200 |
| parents | 9760f54af0b7 |
| children | 53568c37cfa7 |
| rev | line source |
|---|---|
| 100 | 1 #include "gen/llvm.h" |
| 2 | |
| 3 #include "mtype.h" | |
| 4 #include "aggregate.h" | |
| 5 #include "init.h" | |
| 6 #include "declaration.h" | |
| 7 #include "template.h" | |
| 8 #include "module.h" | |
| 9 #include "statement.h" | |
| 10 | |
| 11 #include "gen/irstate.h" | |
| 12 #include "gen/tollvm.h" | |
| 13 #include "gen/runtime.h" | |
| 14 #include "gen/arrays.h" | |
| 15 #include "gen/logger.h" | |
| 16 #include "gen/functions.h" | |
| 17 #include "gen/todebug.h" | |
| 18 #include "gen/classes.h" | |
| 131 | 19 #include "gen/dvalue.h" |
| 100 | 20 |
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21 const llvm::FunctionType* DtoFunctionType(Type* type, const LLType* thistype, bool ismain) |
| 100 | 22 { |
| 23 TypeFunction* f = (TypeFunction*)type; | |
| 24 assert(f != 0); | |
| 25 | |
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26 if (type->ir.type != NULL) { |
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27 return llvm::cast<llvm::FunctionType>(type->ir.type->get()); |
| 100 | 28 } |
| 29 | |
| 30 bool typesafeVararg = false; | |
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31 bool arrayVararg = false; |
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32 if (f->linkage == LINKd) |
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33 { |
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34 if (f->varargs == 1) |
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35 typesafeVararg = true; |
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36 else if (f->varargs == 2) |
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37 arrayVararg = true; |
| 100 | 38 } |
| 39 | |
| 40 // return value type | |
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41 const LLType* rettype; |
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42 const LLType* actualRettype; |
| 100 | 43 Type* rt = f->next; |
| 44 bool retinptr = false; | |
| 45 bool usesthis = false; | |
| 46 | |
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234
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47 // parameter types |
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48 std::vector<const LLType*> paramvec; |
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49 |
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50 if (ismain) |
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51 { |
| 100 | 52 rettype = llvm::Type::Int32Ty; |
| 53 actualRettype = rettype; | |
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54 if (Argument::dim(f->parameters) == 0) |
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55 { |
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56 const LLType* arrTy = DtoArrayType(LLType::Int8Ty); |
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57 const LLType* arrArrTy = DtoArrayType(arrTy); |
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58 paramvec.push_back(getPtrToType(arrArrTy)); |
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59 } |
| 100 | 60 } |
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61 else{ |
| 100 | 62 assert(rt); |
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63 Type* rtfin = DtoDType(rt); |
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64 if (DtoIsReturnedInArg(rt)) { |
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65 rettype = getPtrToType(DtoType(rt)); |
| 100 | 66 actualRettype = llvm::Type::VoidTy; |
| 67 f->llvmRetInPtr = retinptr = true; | |
| 68 } | |
| 69 else { | |
| 70 rettype = DtoType(rt); | |
| 71 actualRettype = rettype; | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 if (retinptr) { | |
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76 //Logger::cout() << "returning through pointer parameter: " << *rettype << '\n'; |
| 100 | 77 paramvec.push_back(rettype); |
| 78 } | |
| 79 | |
| 80 if (thistype) { | |
| 81 paramvec.push_back(thistype); | |
| 82 usesthis = true; | |
| 83 } | |
| 84 | |
| 85 if (typesafeVararg) { | |
| 86 ClassDeclaration* ti = Type::typeinfo; | |
| 87 ti->toObjFile(); | |
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88 DtoForceConstInitDsymbol(ti); |
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89 assert(ti->ir.irStruct->constInit); |
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90 std::vector<const LLType*> types; |
| 100 | 91 types.push_back(DtoSize_t()); |
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92 types.push_back(getPtrToType(getPtrToType(ti->ir.irStruct->constInit->getType()))); |
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93 const LLType* t1 = llvm::StructType::get(types); |
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94 paramvec.push_back(getPtrToType(t1)); |
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95 paramvec.push_back(getPtrToType(llvm::Type::Int8Ty)); |
| 100 | 96 } |
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97 else if (arrayVararg) |
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98 { |
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99 // do nothing? |
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100 } |
| 100 | 101 |
| 102 size_t n = Argument::dim(f->parameters); | |
| 103 | |
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104 int nbyval = 0; |
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105 |
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106 llvm::PAListPtr palist; |
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107 |
| 100 | 108 for (int i=0; i < n; ++i) { |
| 109 Argument* arg = Argument::getNth(f->parameters, i); | |
| 110 // ensure scalar | |
| 111 Type* argT = DtoDType(arg->type); | |
| 112 assert(argT); | |
| 113 | |
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114 bool refOrOut = ((arg->storageClass & STCref) || (arg->storageClass & STCout)); |
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115 |
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116 const LLType* at = DtoType(argT); |
| 100 | 117 if (isaStruct(at)) { |
| 118 Logger::println("struct param"); | |
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119 paramvec.push_back(getPtrToType(at)); |
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120 arg->llvmByVal = !refOrOut; |
| 100 | 121 } |
| 122 else if (isaArray(at)) { | |
| 123 Logger::println("sarray param"); | |
| 124 assert(argT->ty == Tsarray); | |
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125 //paramvec.push_back(getPtrToType(at->getContainedType(0))); |
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126 paramvec.push_back(getPtrToType(at)); |
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127 arg->llvmByVal = !refOrOut; |
| 100 | 128 } |
| 129 else if (llvm::isa<llvm::OpaqueType>(at)) { | |
| 130 Logger::println("opaque param"); | |
| 131 assert(argT->ty == Tstruct || argT->ty == Tclass); | |
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132 paramvec.push_back(getPtrToType(at)); |
| 100 | 133 } |
| 134 else { | |
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135 if (refOrOut) { |
| 131 | 136 Logger::println("by ref param"); |
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137 at = getPtrToType(at); |
| 100 | 138 } |
| 139 else { | |
| 140 Logger::println("in param"); | |
| 141 } | |
| 142 paramvec.push_back(at); | |
| 143 } | |
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144 |
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145 if (arg->llvmByVal) |
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146 nbyval++; |
| 100 | 147 } |
| 148 | |
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149 //warning("set %d byval args for type: %s", nbyval, f->toChars()); |
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150 |
| 100 | 151 // construct function type |
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152 bool isvararg = !(typesafeVararg || arrayVararg) && f->varargs; |
| 100 | 153 llvm::FunctionType* functype = llvm::FunctionType::get(actualRettype, paramvec, isvararg); |
| 154 | |
| 155 f->llvmRetInPtr = retinptr; | |
| 156 f->llvmUsesThis = usesthis; | |
| 157 | |
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158 f->ir.type = new llvm::PATypeHolder(functype); |
| 100 | 159 |
| 160 return functype; | |
| 161 } | |
| 162 | |
| 163 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 164 | |
| 165 static const llvm::FunctionType* DtoVaFunctionType(FuncDeclaration* fdecl) | |
| 166 { | |
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167 // type has already been resolved |
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168 if (fdecl->type->ir.type != 0) { |
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169 return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); |
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170 } |
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171 |
| 100 | 172 TypeFunction* f = (TypeFunction*)fdecl->type; |
| 173 assert(f != 0); | |
| 174 | |
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175 const llvm::PointerType* i8pty = getPtrToType(llvm::Type::Int8Ty); |
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176 std::vector<const LLType*> args; |
| 100 | 177 |
| 178 if (fdecl->llvmInternal == LLVMva_start) { | |
| 179 args.push_back(i8pty); | |
| 180 } | |
| 181 else if (fdecl->llvmInternal == LLVMva_intrinsic) { | |
| 182 size_t n = Argument::dim(f->parameters); | |
| 183 for (size_t i=0; i<n; ++i) { | |
| 184 args.push_back(i8pty); | |
| 185 } | |
| 186 } | |
| 187 else | |
| 188 assert(0); | |
| 189 | |
| 190 const llvm::FunctionType* fty = llvm::FunctionType::get(llvm::Type::VoidTy, args, false); | |
| 191 | |
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192 f->ir.type = new llvm::PATypeHolder(fty); |
| 100 | 193 |
| 194 return fty; | |
| 195 } | |
| 196 | |
| 197 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 198 | |
| 199 const llvm::FunctionType* DtoFunctionType(FuncDeclaration* fdecl) | |
| 200 { | |
| 201 if ((fdecl->llvmInternal == LLVMva_start) || (fdecl->llvmInternal == LLVMva_intrinsic)) { | |
| 202 return DtoVaFunctionType(fdecl); | |
| 203 } | |
| 204 | |
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205 // unittest has null type, just build it manually |
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206 /*if (fdecl->isUnitTestDeclaration()) { |
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207 std::vector<const LLType*> args; |
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208 return llvm::FunctionType::get(llvm::Type::VoidTy, args, false); |
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209 }*/ |
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210 |
| 100 | 211 // type has already been resolved |
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212 if (fdecl->type->ir.type != 0) { |
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213 return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); |
| 100 | 214 } |
| 215 | |
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216 const LLType* thisty = NULL; |
| 100 | 217 if (fdecl->needThis()) { |
| 132 | 218 if (AggregateDeclaration* ad = fdecl->isMember2()) { |
| 219 Logger::println("isMember = this is: %s", ad->type->toChars()); | |
| 100 | 220 thisty = DtoType(ad->type); |
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221 //Logger::cout() << "this llvm type: " << *thisty << '\n'; |
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222 if (isaStruct(thisty) || (!gIR->structs.empty() && thisty == gIR->topstruct()->recty.get())) |
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223 thisty = getPtrToType(thisty); |
| 100 | 224 } |
| 132 | 225 else { |
| 226 Logger::println("chars: %s type: %s kind: %s", fdecl->toChars(), fdecl->type->toChars(), fdecl->kind()); | |
| 227 assert(0); | |
| 228 } | |
| 100 | 229 } |
| 230 else if (fdecl->isNested()) { | |
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231 thisty = getPtrToType(llvm::Type::Int8Ty); |
| 100 | 232 } |
| 233 | |
| 234 const llvm::FunctionType* functype = DtoFunctionType(fdecl->type, thisty, fdecl->isMain()); | |
| 235 | |
| 236 return functype; | |
| 237 } | |
| 238 | |
| 239 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 240 | |
| 241 static llvm::Function* DtoDeclareVaFunction(FuncDeclaration* fdecl) | |
| 242 { | |
| 243 TypeFunction* f = (TypeFunction*)DtoDType(fdecl->type); | |
| 244 const llvm::FunctionType* fty = DtoVaFunctionType(fdecl); | |
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245 LLConstant* fn = 0; |
| 100 | 246 |
| 247 if (fdecl->llvmInternal == LLVMva_start) { | |
| 248 fn = gIR->module->getOrInsertFunction("llvm.va_start", fty); | |
| 249 assert(fn); | |
| 250 } | |
| 251 else if (fdecl->llvmInternal == LLVMva_intrinsic) { | |
| 252 fn = gIR->module->getOrInsertFunction(fdecl->llvmInternal1, fty); | |
| 253 assert(fn); | |
| 254 } | |
| 255 else | |
| 256 assert(0); | |
| 257 | |
| 258 llvm::Function* func = llvm::dyn_cast<llvm::Function>(fn); | |
| 259 assert(func); | |
| 260 assert(func->isIntrinsic()); | |
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261 fdecl->ir.irFunc->func = func; |
| 100 | 262 return func; |
| 263 } | |
| 264 | |
| 265 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 266 | |
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267 void DtoResolveFunction(FuncDeclaration* fdecl) |
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268 { |
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269 if (!global.params.useUnitTests && fdecl->isUnitTestDeclaration()) { |
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270 return; // ignore declaration completely |
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271 } |
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272 |
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133
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273 // is imported and we don't have access? |
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274 if (fdecl->getModule() != gIR->dmodule) |
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275 { |
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276 if (fdecl->prot() == PROTprivate) |
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277 return; |
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278 } |
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279 |
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280 if (fdecl->ir.resolved) return; |
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281 fdecl->ir.resolved = true; |
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102
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282 |
| 132 | 283 Logger::println("DtoResolveFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); |
|
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284 LOG_SCOPE; |
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285 |
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286 if (fdecl->runTimeHack) { |
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287 gIR->declareList.push_back(fdecl); |
| 127 | 288 TypeFunction* tf = (TypeFunction*)fdecl->type; |
| 289 tf->llvmRetInPtr = DtoIsPassedByRef(tf->next); | |
|
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290 return; |
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291 } |
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292 |
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293 if (fdecl->parent) |
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294 if (TemplateInstance* tinst = fdecl->parent->isTemplateInstance()) |
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295 { |
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296 TemplateDeclaration* tempdecl = tinst->tempdecl; |
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297 if (tempdecl->llvmInternal == LLVMva_arg) |
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298 { |
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299 Logger::println("magic va_arg found"); |
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300 fdecl->llvmInternal = LLVMva_arg; |
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301 fdecl->ir.declared = true; |
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302 fdecl->ir.initialized = true; |
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303 fdecl->ir.defined = true; |
|
102
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304 return; // this gets mapped to an instruction so a declaration makes no sence |
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305 } |
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306 else if (tempdecl->llvmInternal == LLVMva_start) |
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307 { |
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308 Logger::println("magic va_start found"); |
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309 fdecl->llvmInternal = LLVMva_start; |
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310 } |
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311 } |
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312 |
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313 DtoFunctionType(fdecl); |
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314 |
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315 // queue declaration |
|
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316 if (!fdecl->isAbstract()) |
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317 gIR->declareList.push_back(fdecl); |
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102
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318 } |
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319 |
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320 ////////////////////////////////////////////////////////////////////////////////////////// |
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321 |
|
240
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322 static void set_param_attrs(TypeFunction* f, llvm::Function* func, FuncDeclaration* fdecl) |
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323 { |
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324 assert(f->parameters); |
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325 |
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326 int llidx = 1; |
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327 if (f->llvmRetInPtr) ++llidx; |
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328 if (f->llvmUsesThis) ++llidx; |
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329 if (f->linkage == LINKd && f->varargs == 1) |
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330 llidx += 2; |
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331 |
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332 int funcNumArgs = func->getArgumentList().size(); |
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333 std::vector<llvm::ParamAttrsWithIndex> attrs; |
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334 int k = 0; |
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335 |
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336 int nbyval = 0; |
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337 |
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338 if (fdecl->isMain() && Argument::dim(f->parameters) == 0) |
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339 { |
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340 llvm::ParamAttrsWithIndex PAWI; |
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341 PAWI.Index = llidx; |
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342 PAWI.Attrs = llvm::ParamAttr::ByVal; |
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343 attrs.push_back(PAWI); |
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344 llidx++; |
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345 nbyval++; |
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346 } |
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347 |
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348 for (; llidx <= funcNumArgs && f->parameters->dim > k; ++llidx,++k) |
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349 { |
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350 Argument* fnarg = (Argument*)f->parameters->data[k]; |
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351 assert(fnarg); |
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352 if (fnarg->llvmByVal) |
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353 { |
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354 llvm::ParamAttrsWithIndex PAWI; |
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355 PAWI.Index = llidx; |
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356 PAWI.Attrs = llvm::ParamAttr::ByVal; |
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357 attrs.push_back(PAWI); |
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358 nbyval++; |
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359 } |
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360 } |
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361 |
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362 if (nbyval) { |
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363 llvm::PAListPtr palist = llvm::PAListPtr::get(attrs.begin(), attrs.end()); |
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364 func->setParamAttrs(palist); |
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365 } |
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366 } |
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367 |
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368 ////////////////////////////////////////////////////////////////////////////////////////// |
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369 |
| 100 | 370 void DtoDeclareFunction(FuncDeclaration* fdecl) |
| 371 { | |
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372 if (fdecl->ir.declared) return; |
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373 fdecl->ir.declared = true; |
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374 |
| 132 | 375 Logger::println("DtoDeclareFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); |
| 100 | 376 LOG_SCOPE; |
| 377 | |
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378 assert(!fdecl->isAbstract()); |
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379 |
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380 // intrinsic sanity check |
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381 if (fdecl->llvmInternal == LLVMintrinsic && fdecl->fbody) { |
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382 error(fdecl->loc, "intrinsics cannot have function bodies"); |
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383 fatal(); |
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384 } |
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385 |
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386 // get TypeFunction* |
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387 Type* t = DtoDType(fdecl->type); |
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388 TypeFunction* f = (TypeFunction*)t; |
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389 |
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390 // runtime function special handling |
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391 if (fdecl->runTimeHack) { |
| 100 | 392 Logger::println("runtime hack func chars: %s", fdecl->toChars()); |
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393 if (!fdecl->ir.irFunc) { |
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394 IrFunction* irfunc = new IrFunction(fdecl); |
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395 llvm::Function* llfunc = LLVM_D_GetRuntimeFunction(gIR->module, fdecl->toChars()); |
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396 fdecl->ir.irFunc = irfunc; |
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397 fdecl->ir.irFunc->func = llfunc; |
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398 } |
| 100 | 399 return; |
| 400 } | |
| 401 | |
| 402 bool declareOnly = false; | |
|
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403 bool templInst = fdecl->parent && DtoIsTemplateInstance(fdecl->parent); |
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404 if (!templInst && fdecl->getModule() != gIR->dmodule) |
|
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405 { |
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406 Logger::println("not template instance, and not in this module. declare only!"); |
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407 Logger::println("current module: %s", gIR->dmodule->ident->toChars()); |
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408 Logger::println("func module: %s", fdecl->getModule()->ident->toChars()); |
|
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409 declareOnly = true; |
|
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410 } |
|
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411 else if (fdecl->llvmInternal == LLVMva_start) |
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412 declareOnly = true; |
| 100 | 413 |
|
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414 if (!fdecl->ir.irFunc) { |
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415 fdecl->ir.irFunc = new IrFunction(fdecl); |
| 100 | 416 } |
| 417 | |
| 418 // mangled name | |
| 419 char* mangled_name; | |
| 420 if (fdecl->llvmInternal == LLVMintrinsic) | |
| 421 mangled_name = fdecl->llvmInternal1; | |
| 422 else | |
| 423 mangled_name = fdecl->mangle(); | |
| 424 | |
| 425 llvm::Function* vafunc = 0; | |
| 426 if ((fdecl->llvmInternal == LLVMva_start) || (fdecl->llvmInternal == LLVMva_intrinsic)) { | |
| 427 vafunc = DtoDeclareVaFunction(fdecl); | |
| 428 } | |
| 429 | |
| 430 // construct function | |
| 431 const llvm::FunctionType* functype = DtoFunctionType(fdecl); | |
| 432 llvm::Function* func = vafunc ? vafunc : gIR->module->getFunction(mangled_name); | |
| 433 if (!func) | |
|
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434 func = llvm::Function::Create(functype, DtoLinkage(fdecl), mangled_name, gIR->module); |
| 100 | 435 else |
| 436 assert(func->getFunctionType() == functype); | |
| 437 | |
| 438 // add func to IRFunc | |
|
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439 fdecl->ir.irFunc->func = func; |
| 100 | 440 |
| 441 // calling convention | |
| 442 if (!vafunc && fdecl->llvmInternal != LLVMintrinsic) | |
| 443 func->setCallingConv(DtoCallingConv(f->linkage)); | |
|
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444 else // fall back to C, it should be the right thing to do |
| 132 | 445 func->setCallingConv(llvm::CallingConv::C); |
| 446 | |
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447 fdecl->ir.irFunc->func = func; |
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448 assert(llvm::isa<llvm::FunctionType>(f->ir.type->get())); |
| 100 | 449 |
|
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450 // parameter attributes |
|
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451 if (f->parameters) { |
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452 set_param_attrs(f, func, fdecl); |
|
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453 } |
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454 |
|
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455 // main |
| 100 | 456 if (fdecl->isMain()) { |
| 457 gIR->mainFunc = func; | |
| 458 } | |
| 459 | |
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460 // static ctor |
|
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461 if (fdecl->isStaticCtorDeclaration() && fdecl->getModule() == gIR->dmodule) { |
|
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462 gIR->ctors.push_back(fdecl); |
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463 } |
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464 // static dtor |
|
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465 else if (fdecl->isStaticDtorDeclaration() && fdecl->getModule() == gIR->dmodule) { |
|
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466 gIR->dtors.push_back(fdecl); |
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467 } |
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468 |
|
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469 // we never reference parameters of function prototypes |
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470 if (!declareOnly) |
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471 { |
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472 // name parameters |
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473 llvm::Function::arg_iterator iarg = func->arg_begin(); |
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474 int k = 0; |
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475 if (f->llvmRetInPtr) { |
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476 iarg->setName("retval"); |
|
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477 fdecl->ir.irFunc->retArg = iarg; |
|
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478 ++iarg; |
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479 } |
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480 if (f->llvmUsesThis) { |
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481 iarg->setName("this"); |
|
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482 fdecl->ir.irFunc->thisVar = iarg; |
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483 assert(fdecl->ir.irFunc->thisVar); |
|
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484 ++iarg; |
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485 } |
|
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486 |
|
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487 if (f->linkage == LINKd && f->varargs == 1) { |
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488 iarg->setName("_arguments"); |
|
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489 fdecl->ir.irFunc->_arguments = iarg; |
|
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490 ++iarg; |
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491 iarg->setName("_argptr"); |
|
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492 fdecl->ir.irFunc->_argptr = iarg; |
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493 ++iarg; |
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494 } |
|
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495 |
|
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496 for (; iarg != func->arg_end(); ++iarg) |
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497 { |
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498 if (fdecl->parameters && fdecl->parameters->dim > k) |
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499 { |
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500 Dsymbol* argsym = (Dsymbol*)fdecl->parameters->data[k++]; |
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501 VarDeclaration* argvd = argsym->isVarDeclaration(); |
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502 assert(argvd); |
|
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503 assert(!argvd->ir.irLocal); |
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504 argvd->ir.irLocal = new IrLocal(argvd); |
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505 argvd->ir.irLocal->value = iarg; |
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506 iarg->setName(argvd->ident->toChars()); |
| 100 | 507 } |
|
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508 else |
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509 { |
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510 iarg->setName("unnamed"); |
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511 } |
| 100 | 512 } |
| 513 } | |
| 514 | |
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515 if (fdecl->isUnitTestDeclaration()) |
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516 gIR->unitTests.push_back(fdecl); |
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517 |
| 100 | 518 if (!declareOnly) |
|
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519 gIR->defineList.push_back(fdecl); |
|
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520 else |
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521 assert(func->getLinkage() != llvm::GlobalValue::InternalLinkage); |
| 100 | 522 |
| 523 Logger::cout() << "func decl: " << *func << '\n'; | |
| 524 } | |
| 525 | |
| 526 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 527 | |
| 528 void DtoDefineFunc(FuncDeclaration* fd) | |
| 529 { | |
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530 if (fd->ir.defined) return; |
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531 fd->ir.defined = true; |
|
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532 |
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533 assert(fd->ir.declared); |
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534 |
| 132 | 535 Logger::println("DtoDefineFunc(%s): %s", fd->toPrettyChars(), fd->loc.toChars()); |
|
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536 LOG_SCOPE; |
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537 |
| 100 | 538 // debug info |
| 539 if (global.params.symdebug) { | |
| 540 Module* mo = fd->getModule(); | |
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541 fd->ir.irFunc->dwarfSubProg = DtoDwarfSubProgram(fd, DtoDwarfCompileUnit(mo)); |
| 100 | 542 } |
| 543 | |
| 544 Type* t = DtoDType(fd->type); | |
| 545 TypeFunction* f = (TypeFunction*)t; | |
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546 assert(f->ir.type); |
| 100 | 547 |
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548 llvm::Function* func = fd->ir.irFunc->func; |
| 100 | 549 const llvm::FunctionType* functype = func->getFunctionType(); |
| 550 | |
| 551 // only members of the current module or template instances maybe be defined | |
| 552 if (fd->getModule() == gIR->dmodule || DtoIsTemplateInstance(fd->parent)) | |
| 553 { | |
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554 fd->ir.DModule = gIR->dmodule; |
| 100 | 555 |
| 556 // function definition | |
| 557 if (fd->fbody != 0) | |
| 558 { | |
| 559 Logger::println("Doing function body for: %s", fd->toChars()); | |
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560 assert(fd->ir.irFunc); |
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561 gIR->functions.push_back(fd->ir.irFunc); |
| 100 | 562 |
| 563 if (fd->isMain()) | |
| 564 gIR->emitMain = true; | |
| 565 | |
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566 std::string entryname("entry_"); |
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567 entryname.append(fd->toPrettyChars()); |
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568 |
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569 llvm::BasicBlock* beginbb = llvm::BasicBlock::Create(entryname,func); |
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570 llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endentry",func); |
| 100 | 571 |
| 572 //assert(gIR->scopes.empty()); | |
| 573 gIR->scopes.push_back(IRScope(beginbb, endbb)); | |
| 574 | |
| 575 // create alloca point | |
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576 llvm::Instruction* allocaPoint = new llvm::AllocaInst(llvm::Type::Int32Ty, "alloca point", beginbb); |
|
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577 gIR->func()->allocapoint = allocaPoint; |
| 100 | 578 |
|
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579 // need result variable? (not nested) |
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580 if (fd->vresult && !fd->vresult->nestedref) { |
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581 Logger::println("non-nested vresult value"); |
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582 fd->vresult->ir.irLocal = new IrLocal(fd->vresult); |
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583 fd->vresult->ir.irLocal->value = new llvm::AllocaInst(DtoType(fd->vresult->type),"function_vresult",allocaPoint); |
|
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584 } |
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585 |
| 100 | 586 // give arguments storage |
|
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587 if (fd->parameters) |
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588 { |
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589 size_t n = fd->parameters->dim; |
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590 for (int i=0; i < n; ++i) |
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591 { |
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592 Dsymbol* argsym = (Dsymbol*)fd->parameters->data[i]; |
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593 VarDeclaration* vd = argsym->isVarDeclaration(); |
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594 assert(vd); |
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595 |
|
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596 if (!vd->needsStorage || vd->nestedref || vd->isRef() || vd->isOut() || DtoIsPassedByRef(vd->type)) |
| 100 | 597 continue; |
|
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598 |
|
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599 LLValue* a = vd->ir.irLocal->value; |
| 100 | 600 assert(a); |
| 601 std::string s(a->getName()); | |
| 602 Logger::println("giving argument '%s' storage", s.c_str()); | |
| 603 s.append("_storage"); | |
|
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604 |
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605 LLValue* v = new llvm::AllocaInst(a->getType(),s,allocaPoint); |
| 100 | 606 gIR->ir->CreateStore(a,v); |
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607 vd->ir.irLocal->value = v; |
| 100 | 608 } |
| 609 } | |
| 610 | |
| 611 // debug info | |
| 612 if (global.params.symdebug) DtoDwarfFuncStart(fd); | |
| 613 | |
|
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614 LLValue* parentNested = NULL; |
| 131 | 615 if (FuncDeclaration* fd2 = fd->toParent2()->isFuncDeclaration()) { |
| 616 if (!fd->isStatic()) // huh? | |
|
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617 parentNested = fd2->ir.irFunc->nestedVar; |
|
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618 } |
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619 |
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620 // need result variable? (nested) |
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621 if (fd->vresult && fd->vresult->nestedref) { |
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622 Logger::println("nested vresult value: %s", fd->vresult->toChars()); |
|
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623 fd->nestedVars.insert(fd->vresult); |
| 100 | 624 } |
| 625 | |
| 626 // construct nested variables struct | |
|
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627 if (!fd->nestedVars.empty() || parentNested) { |
|
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628 std::vector<const LLType*> nestTypes; |
| 100 | 629 int j = 0; |
| 630 if (parentNested) { | |
| 631 nestTypes.push_back(parentNested->getType()); | |
| 632 j++; | |
| 633 } | |
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634 for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { |
| 100 | 635 VarDeclaration* vd = *i; |
|
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636 Logger::println("referenced nested variable %s", vd->toChars()); |
|
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637 if (!vd->ir.irLocal) |
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638 vd->ir.irLocal = new IrLocal(vd); |
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639 vd->ir.irLocal->nestedIndex = j++; |
| 100 | 640 if (vd->isParameter()) { |
|
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641 if (!vd->ir.irLocal->value) { |
|
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642 assert(vd == fd->vthis); |
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643 vd->ir.irLocal->value = fd->ir.irFunc->thisVar; |
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644 } |
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645 assert(vd->ir.irLocal->value); |
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646 nestTypes.push_back(vd->ir.irLocal->value->getType()); |
| 100 | 647 } |
| 648 else { | |
| 649 nestTypes.push_back(DtoType(vd->type)); | |
| 650 } | |
| 651 } | |
| 652 const llvm::StructType* nestSType = llvm::StructType::get(nestTypes); | |
|
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653 Logger::cout() << "nested var struct has type:" << *nestSType << '\n'; |
|
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654 fd->ir.irFunc->nestedVar = new llvm::AllocaInst(nestSType,"nestedvars",allocaPoint); |
| 100 | 655 if (parentNested) { |
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656 assert(fd->ir.irFunc->thisVar); |
|
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657 LLValue* ptr = gIR->ir->CreateBitCast(fd->ir.irFunc->thisVar, parentNested->getType(), "tmp"); |
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658 gIR->ir->CreateStore(ptr, DtoGEPi(fd->ir.irFunc->nestedVar, 0,0, "tmp")); |
| 100 | 659 } |
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660 for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { |
| 100 | 661 VarDeclaration* vd = *i; |
| 662 if (vd->isParameter()) { | |
|
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663 assert(vd->ir.irLocal); |
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664 gIR->ir->CreateStore(vd->ir.irLocal->value, DtoGEPi(fd->ir.irFunc->nestedVar, 0, vd->ir.irLocal->nestedIndex, "tmp")); |
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665 vd->ir.irLocal->value = fd->ir.irFunc->nestedVar; |
| 100 | 666 } |
| 667 } | |
| 668 } | |
| 669 | |
| 670 // copy _argptr to a memory location | |
| 671 if (f->linkage == LINKd && f->varargs == 1) | |
| 672 { | |
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673 LLValue* argptrmem = new llvm::AllocaInst(fd->ir.irFunc->_argptr->getType(), "_argptrmem", gIR->topallocapoint()); |
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674 new llvm::StoreInst(fd->ir.irFunc->_argptr, argptrmem, gIR->scopebb()); |
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675 fd->ir.irFunc->_argptr = argptrmem; |
| 100 | 676 } |
| 677 | |
| 678 // output function body | |
| 679 fd->fbody->toIR(gIR); | |
| 680 | |
| 681 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 682 // in automatically, so we do it here. | |
| 683 if (!fd->isMain()) { | |
| 684 if (!gIR->scopereturned()) { | |
| 685 // pass the previous block into this block | |
| 686 if (global.params.symdebug) DtoDwarfFuncEnd(fd); | |
| 687 if (func->getReturnType() == llvm::Type::VoidTy) { | |
|
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688 llvm::ReturnInst::Create(gIR->scopebb()); |
| 100 | 689 } |
| 690 else { | |
|
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691 llvm::ReturnInst::Create(llvm::UndefValue::get(func->getReturnType()), gIR->scopebb()); |
| 100 | 692 } |
| 693 } | |
| 694 } | |
| 695 | |
| 696 // erase alloca point | |
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697 allocaPoint->eraseFromParent(); |
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698 allocaPoint = 0; |
| 100 | 699 gIR->func()->allocapoint = 0; |
| 700 | |
| 701 gIR->scopes.pop_back(); | |
| 702 | |
| 703 // get rid of the endentry block, it's never used | |
| 704 assert(!func->getBasicBlockList().empty()); | |
| 705 func->getBasicBlockList().pop_back(); | |
| 706 | |
| 707 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 708 // would be nice to figure out how to assert that this is correct | |
| 709 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); | |
| 710 if (lastbb->empty()) { | |
| 711 if (lastbb->getNumUses() == 0) | |
| 712 lastbb->eraseFromParent(); | |
| 713 else { | |
| 714 new llvm::UnreachableInst(lastbb); | |
| 715 /*if (func->getReturnType() == llvm::Type::VoidTy) { | |
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716 llvm::ReturnInst::Create(lastbb); |
| 100 | 717 } |
| 718 else { | |
|
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719 llvm::ReturnInst::Create(llvm::UndefValue::get(func->getReturnType()), lastbb); |
| 100 | 720 }*/ |
| 721 } | |
| 722 } | |
| 723 | |
|
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724 // if the last block is not terminated we return a null value or void |
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725 // for some unknown reason this is needed when a void main() has a inline asm block ... |
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726 // this should be harmless for well formed code! |
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727 lastbb = &func->getBasicBlockList().back(); |
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728 if (!lastbb->getTerminator()) |
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729 { |
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730 Logger::println("adding missing return statement"); |
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731 if (func->getReturnType() == llvm::Type::VoidTy) |
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732 llvm::ReturnInst::Create(lastbb); |
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733 else |
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734 llvm::ReturnInst::Create(llvm::Constant::getNullValue(func->getReturnType()), lastbb); |
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735 } |
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74701ba40398
[svn r241] Fixed missing terminator for void main() with inline asm block.
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217
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changeset
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736 |
| 100 | 737 gIR->functions.pop_back(); |
| 738 } | |
| 739 } | |
| 740 } | |
| 741 | |
| 742 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 743 | |
| 117 | 744 const llvm::FunctionType* DtoBaseFunctionType(FuncDeclaration* fdecl) |
| 745 { | |
| 746 Dsymbol* parent = fdecl->toParent(); | |
| 747 ClassDeclaration* cd = parent->isClassDeclaration(); | |
| 748 assert(cd); | |
| 749 | |
| 750 FuncDeclaration* f = fdecl; | |
| 751 | |
| 752 while (cd) | |
| 753 { | |
| 754 ClassDeclaration* base = cd->baseClass; | |
| 755 if (!base) | |
| 756 break; | |
| 757 FuncDeclaration* f2 = base->findFunc(fdecl->ident, (TypeFunction*)fdecl->type); | |
| 758 if (f2) { | |
| 759 f = f2; | |
| 760 cd = base; | |
| 761 } | |
| 762 else | |
| 763 break; | |
| 764 } | |
| 765 | |
| 766 DtoResolveDsymbol(f); | |
| 767 return llvm::cast<llvm::FunctionType>(DtoType(f->type)); | |
| 768 } | |
| 769 | |
| 770 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 131 | 771 |
| 772 DValue* DtoArgument(Argument* fnarg, Expression* argexp) | |
| 773 { | |
| 774 Logger::println("DtoArgument"); | |
| 775 LOG_SCOPE; | |
| 776 | |
| 777 DValue* arg = argexp->toElem(gIR); | |
| 778 | |
| 779 // ref/out arg | |
| 780 if (fnarg && ((fnarg->storageClass & STCref) || (fnarg->storageClass & STCout))) | |
| 781 { | |
| 782 if (arg->isVar() || arg->isLRValue()) | |
| 783 arg = new DImValue(argexp->type, arg->getLVal(), false); | |
| 784 else | |
| 785 arg = new DImValue(argexp->type, arg->getRVal(), false); | |
| 786 } | |
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217
0806379a5eca
[svn r233] Added: -oq command line option for writing fully qualified object names.
lindquist
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215
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787 // byval arg, but expr has no storage yet |
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0806379a5eca
[svn r233] Added: -oq command line option for writing fully qualified object names.
lindquist
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215
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788 else if (DtoIsPassedByRef(argexp->type) && (arg->isSlice() || arg->isComplex() || arg->isNull())) |
| 131 | 789 { |
|
213
7816aafeea3c
[svn r229] Updated the object.d implementation to the latest Tango.
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205
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790 LLValue* alloc = new llvm::AllocaInst(DtoType(argexp->type), "tmpparam", gIR->topallocapoint()); |
| 131 | 791 DVarValue* vv = new DVarValue(argexp->type, alloc, true); |
| 792 DtoAssign(vv, arg); | |
| 793 arg = vv; | |
| 794 } | |
| 795 | |
| 796 return arg; | |
| 797 } | |
| 798 | |
| 799 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 800 | |
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213
7816aafeea3c
[svn r229] Updated the object.d implementation to the latest Tango.
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205
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changeset
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801 void DtoVariadicArgument(Expression* argexp, LLValue* dst) |
| 131 | 802 { |
| 803 Logger::println("DtoVariadicArgument"); | |
| 804 LOG_SCOPE; | |
| 805 DVarValue* vv = new DVarValue(argexp->type, dst, true); | |
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215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
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213
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806 gIR->exps.push_back(IRExp(NULL, argexp, vv)); |
| 131 | 807 DtoAssign(vv, argexp->toElem(gIR)); |
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215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
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213
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808 gIR->exps.pop_back(); |
| 131 | 809 } |
| 810 | |
| 811 ////////////////////////////////////////////////////////////////////////////////////////// |