Mercurial > projects > ldc
annotate gen/toobj.c @ 17:6c6cd097bcdf trunk
[svn r21] * Fixed local instances of imported templates
| author | lindquist |
|---|---|
| date | Wed, 03 Oct 2007 06:14:41 +0200 |
| parents | 37a4fdab33fc |
| children | c05ef76f1c20 |
| rev | line source |
|---|---|
| 1 | 1 |
| 2 // Copyright (c) 1999-2004 by Digital Mars | |
| 3 // All Rights Reserved | |
| 4 // written by Walter Bright | |
| 5 // www.digitalmars.com | |
| 6 // License for redistribution is by either the Artistic License | |
| 7 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 8 // See the included readme.txt for details. | |
| 9 | |
| 10 #include <cstddef> | |
| 11 #include <iostream> | |
| 12 #include <fstream> | |
| 13 | |
| 14 #include "llvm/Type.h" | |
| 15 #include "llvm/Constants.h" | |
| 16 #include "llvm/DerivedTypes.h" | |
| 17 #include "llvm/Instructions.h" | |
| 18 #include "llvm/Analysis/Verifier.h" | |
| 19 #include "llvm/Bitcode/ReaderWriter.h" | |
| 20 | |
| 21 #include "llvm/Target/TargetData.h" | |
| 22 #include "llvm/Target/TargetMachine.h" | |
| 23 #include "llvm/Target/TargetMachineRegistry.h" | |
| 24 | |
| 25 #include "mars.h" | |
| 26 #include "module.h" | |
| 27 #include "mtype.h" | |
| 28 #include "declaration.h" | |
| 29 #include "statement.h" | |
| 30 #include "enum.h" | |
| 31 #include "aggregate.h" | |
| 32 #include "init.h" | |
| 33 #include "attrib.h" | |
| 34 #include "id.h" | |
| 35 #include "import.h" | |
| 36 #include "template.h" | |
| 37 | |
|
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38 #include "gen/irstate.h" |
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39 #include "gen/elem.h" |
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40 #include "gen/logger.h" |
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41 #include "gen/tollvm.h" |
| 1 | 42 |
| 43 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 44 | |
| 45 void | |
| 46 Module::genobjfile() | |
| 47 { | |
| 48 Logger::cout() << "Generating module: " << (md ? md->toChars() : toChars()) << '\n'; | |
| 49 LOG_SCOPE; | |
| 50 | |
| 6 | 51 // start by deleting the old object file |
| 1 | 52 deleteObjFile(); |
| 53 | |
| 6 | 54 // creaet a new ir state |
| 1 | 55 IRState ir; |
| 56 gIR = &ir; | |
| 57 ir.dmodule = this; | |
| 58 | |
| 6 | 59 // name the module |
| 1 | 60 std::string mname(toChars()); |
| 61 if (md != 0) | |
| 62 mname = md->toChars(); | |
| 63 ir.module = new llvm::Module(mname); | |
| 64 | |
| 6 | 65 // set target stuff |
| 1 | 66 std::string target_triple(global.params.tt_arch); |
| 67 target_triple.append(global.params.tt_os); | |
| 68 ir.module->setTargetTriple(target_triple); | |
| 69 ir.module->setDataLayout(global.params.data_layout); | |
| 70 | |
| 71 gTargetData = new llvm::TargetData(ir.module); | |
| 72 | |
| 6 | 73 // process module members |
| 1 | 74 for (int k=0; k < members->dim; k++) { |
| 75 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 76 assert(dsym); | |
| 77 dsym->toObjFile(); | |
| 78 } | |
| 79 | |
| 80 delete gTargetData; | |
| 81 gTargetData = 0; | |
| 82 | |
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83 // emit the llvm main function if necessary |
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84 if (ir.emitMain) { |
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85 LLVM_DtoMain(); |
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86 } |
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87 |
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88 /* |
| 6 | 89 // verify the llvm |
| 1 | 90 std::string verifyErr; |
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91 Logger::println("Verifying module..."); |
| 1 | 92 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
| 93 { | |
| 94 error("%s", verifyErr.c_str()); | |
| 95 fatal(); | |
| 96 } | |
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97 else |
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98 Logger::println("Verification passed!"); |
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99 */ |
| 1 | 100 |
| 101 // run passes | |
| 102 // TODO | |
| 103 | |
| 104 /*if (global.params.llvmLL) { | |
| 105 //assert(0); | |
| 106 std::ofstream os(llfile->name->toChars()); | |
| 107 //llvm::WriteAssemblyToFile(ir.module, os); | |
| 108 ir.module->print(os); | |
| 109 }*/ | |
| 110 | |
| 6 | 111 // write bytecode |
| 1 | 112 //if (global.params.llvmBC) { |
| 113 Logger::println("Writing LLVM bitcode\n"); | |
| 114 std::ofstream os(bcfile->name->toChars(), std::ios::binary); | |
| 115 llvm::WriteBitcodeToFile(ir.module, os); | |
| 116 //} | |
| 117 | |
| 118 delete ir.module; | |
| 119 gIR = NULL; | |
| 120 } | |
| 121 | |
| 122 /* ================================================================== */ | |
| 123 | |
| 124 // Put out instance of ModuleInfo for this Module | |
| 125 | |
| 126 void Module::genmoduleinfo() | |
| 127 { | |
| 128 } | |
| 129 | |
| 130 /* ================================================================== */ | |
| 131 | |
| 132 void Dsymbol::toObjFile() | |
| 133 { | |
| 134 warning("Ignoring Dsymbol::toObjFile for %s", toChars()); | |
| 135 } | |
| 136 | |
| 137 /* ================================================================== */ | |
| 138 | |
| 139 void Declaration::toObjFile() | |
| 140 { | |
| 141 warning("Ignoring Declaration::toObjFile for %s", toChars()); | |
| 142 } | |
| 143 | |
| 144 /* ================================================================== */ | |
| 145 | |
| 6 | 146 /// Returns the LLVM style index from a DMD style offset |
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147 void AggregateDeclaration::offsetToIndex(unsigned os, std::vector<unsigned>& result) |
| 1 | 148 { |
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149 unsigned vos = 0; |
| 1 | 150 for (unsigned i=0; i<fields.dim; ++i) { |
| 151 VarDeclaration* vd = (VarDeclaration*)fields.data[i]; | |
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152 if (vd->type->ty == Tstruct) { |
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153 if (vos + vd->type->size() > os) { |
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154 TypeStruct* ts = (TypeStruct*)vd->type; |
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155 StructDeclaration* sd = ts->sym; |
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156 result.push_back(i); |
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157 sd->offsetToIndex(os - vos, result); |
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158 return; |
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159 } |
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160 } |
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161 else if (os == vd->offset) { |
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162 result.push_back(i); |
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163 return; |
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164 } |
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165 vos += vd->offset; |
| 1 | 166 } |
| 167 assert(0 && "Offset not found in any aggregate field"); | |
| 168 } | |
| 169 | |
| 170 /* ================================================================== */ | |
| 171 | |
| 172 static unsigned LLVM_ClassOffsetToIndex(ClassDeclaration* cd, unsigned os, unsigned& idx) | |
| 173 { | |
| 174 // start at the bottom of the inheritance chain | |
| 175 if (cd->baseClass != 0) { | |
| 176 unsigned o = LLVM_ClassOffsetToIndex(cd->baseClass, os, idx); | |
| 177 if (o != (unsigned)-1) | |
| 178 return o; | |
| 179 } | |
| 180 | |
| 181 // check this class | |
| 182 unsigned i; | |
| 183 for (i=0; i<cd->fields.dim; ++i) { | |
| 184 VarDeclaration* vd = (VarDeclaration*)cd->fields.data[i]; | |
| 185 if (os == vd->offset) | |
| 186 return i+idx; | |
| 187 } | |
| 188 idx += i; | |
| 189 | |
| 190 return (unsigned)-1; | |
| 191 } | |
| 192 | |
| 6 | 193 /// Returns the LLVM style index from a DMD style offset |
| 194 /// Handles class inheritance | |
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195 void ClassDeclaration::offsetToIndex(unsigned os, std::vector<unsigned>& result) |
| 1 | 196 { |
| 197 unsigned idx = 0; | |
| 198 unsigned r = LLVM_ClassOffsetToIndex(this, os, idx); | |
| 199 assert(r != (unsigned)-1 && "Offset not found in any aggregate field"); | |
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200 result.push_back(r+1); // vtable is 0 |
| 1 | 201 } |
| 202 | |
| 203 /* ================================================================== */ | |
| 204 | |
| 205 void InterfaceDeclaration::toObjFile() | |
| 206 { | |
| 207 warning("Ignoring InterfaceDeclaration::toObjFile for %s", toChars()); | |
| 208 } | |
| 209 | |
| 210 /* ================================================================== */ | |
| 211 | |
| 212 void StructDeclaration::toObjFile() | |
| 213 { | |
| 214 TypeStruct* ts = (TypeStruct*)type; | |
| 215 if (llvmType != 0) | |
| 216 return; | |
| 217 | |
| 218 static int sdi = 0; | |
| 219 Logger::print("StructDeclaration::toObjFile(%d): %s\n", sdi++, toChars()); | |
| 220 LOG_SCOPE; | |
| 221 | |
| 222 gIR->structs.push_back(IRStruct(ts)); | |
| 223 | |
| 224 std::vector<FuncDeclaration*> mfs; | |
| 225 | |
| 226 for (int k=0; k < members->dim; k++) { | |
| 227 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 228 | |
| 229 // need late generation of member functions | |
| 230 // they need the llvm::StructType to exist to take the 'this' parameter | |
| 231 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 232 mfs.push_back(fd); | |
| 233 } | |
| 234 else { | |
| 235 dsym->toObjFile(); | |
| 236 } | |
| 237 } | |
| 238 | |
| 239 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 240 | |
| 241 // refine abstract types for stuff like: struct S{S* next;} | |
| 242 if (gIR->topstruct().recty != 0) | |
| 243 { | |
| 244 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 245 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 246 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 247 } | |
| 248 | |
| 249 ts->llvmType = structtype; | |
| 250 llvmType = structtype; | |
| 251 | |
| 252 if (parent->isModule()) { | |
| 253 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 254 } | |
| 255 | |
| 256 // generate static data | |
| 257 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 258 llvm::Constant* _init = 0; | |
| 259 | |
| 260 // always generate the constant initalizer | |
| 261 if (!zeroInit) { | |
| 262 Logger::println("Not zero initialized"); | |
| 263 //assert(tk == gIR->topstruct().size()); | |
| 264 #ifndef LLVMD_NO_LOGGER | |
| 265 Logger::cout() << *structtype << '\n'; | |
| 266 for (size_t k=0; k<gIR->topstruct().inits.size(); ++k) { | |
| 267 Logger::cout() << "Type:" << '\n'; | |
| 268 Logger::cout() << *gIR->topstruct().inits[k]->getType() << '\n'; | |
| 269 Logger::cout() << "Value:" << '\n'; | |
| 270 Logger::cout() << *gIR->topstruct().inits[k] << '\n'; | |
| 271 } | |
| 272 Logger::cout() << "Initializer printed" << '\n'; | |
| 273 #endif | |
| 274 llvmInitZ = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 275 } | |
| 276 else { | |
| 277 Logger::println("Zero initialized"); | |
| 278 llvmInitZ = llvm::ConstantAggregateZero::get(structtype); | |
| 279 } | |
| 280 | |
| 281 // only provide the constant initializer for the defining module | |
| 282 if (getModule() == gIR->dmodule) | |
| 283 { | |
| 284 _init = llvmInitZ; | |
| 285 } | |
| 286 | |
| 287 std::string initname(mangle()); | |
| 288 initname.append("__initZ"); | |
| 289 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, _init, initname, gIR->module); | |
| 290 ts->llvmInit = initvar; | |
| 291 | |
| 292 // generate member functions | |
| 293 size_t n = mfs.size(); | |
| 294 for (size_t i=0; i<n; ++i) { | |
| 295 mfs[i]->toObjFile(); | |
| 296 } | |
| 297 | |
| 298 llvmDModule = gIR->dmodule; | |
| 299 | |
| 300 gIR->structs.pop_back(); | |
| 301 | |
| 302 // generate typeinfo | |
| 303 type->getTypeInfo(NULL); // generate TypeInfo | |
| 304 } | |
| 305 | |
| 306 /* ================================================================== */ | |
| 307 | |
| 308 static void LLVM_AddBaseClassData(BaseClasses* bcs) | |
| 309 { | |
| 310 // add base class data members first | |
| 311 for (int j=0; j<bcs->dim; j++) | |
| 312 { | |
| 313 BaseClass* bc = (BaseClass*)(bcs->data[j]); | |
| 314 assert(bc); | |
| 315 LLVM_AddBaseClassData(&bc->base->baseclasses); | |
| 316 for (int k=0; k < bc->base->members->dim; k++) { | |
| 317 Dsymbol* dsym = (Dsymbol*)(bc->base->members->data[k]); | |
| 318 if (dsym->isVarDeclaration()) | |
| 319 { | |
| 320 dsym->toObjFile(); | |
| 321 } | |
| 322 } | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 void ClassDeclaration::toObjFile() | |
| 327 { | |
| 328 TypeClass* ts = (TypeClass*)type; | |
| 329 if (ts->llvmType != 0 || llvmInProgress) | |
| 330 return; | |
| 331 | |
| 332 llvmInProgress = true; | |
| 333 | |
| 334 static int fdi = 0; | |
| 335 Logger::print("ClassDeclaration::toObjFile(%d): %s\n", fdi++, toChars()); | |
| 336 LOG_SCOPE; | |
| 337 | |
| 6 | 338 gIR->structs.push_back(IRStruct(ts)); |
| 1 | 339 gIR->classes.push_back(this); |
| 340 gIR->classmethods.push_back(IRState::FuncDeclVec()); | |
| 341 gIR->queueClassMethods.push_back(true); | |
| 342 | |
| 343 // add vtable | |
| 9 | 344 llvm::PATypeHolder pa = llvm::OpaqueType::get(); |
| 345 const llvm::Type* vtabty = llvm::PointerType::get(pa); | |
| 1 | 346 gIR->topstruct().fields.push_back(vtabty); |
| 347 gIR->topstruct().inits.push_back(0); | |
| 348 | |
| 349 // base classes first | |
| 350 LLVM_AddBaseClassData(&baseclasses); | |
| 351 | |
| 352 // then add own members | |
| 353 for (int k=0; k < members->dim; k++) { | |
| 354 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 355 dsym->toObjFile(); | |
| 356 } | |
| 357 | |
| 358 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 6 | 359 // refine abstract types for stuff like: class C {C next;} |
| 360 if (gIR->topstruct().recty != 0) | |
| 361 { | |
| 362 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 363 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 364 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 365 } | |
| 366 | |
| 1 | 367 ts->llvmType = structtype; |
| 368 llvmType = structtype; | |
| 369 | |
| 370 bool define_vtable = false; | |
| 371 if (parent->isModule()) { | |
| 372 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 373 define_vtable = (getModule() == gIR->dmodule); | |
| 374 } | |
| 375 else { | |
| 376 assert(0 && "class parent is not a module"); | |
| 377 } | |
| 378 | |
| 9 | 379 // generate vtable |
| 380 llvm::GlobalVariable* svtblVar = 0; | |
| 381 std::vector<llvm::Constant*> sinits; | |
| 382 std::vector<const llvm::Type*> sinits_ty; | |
| 383 sinits.reserve(vtbl.dim); | |
| 384 sinits_ty.reserve(vtbl.dim); | |
| 385 | |
| 386 for (int k=0; k < vtbl.dim; k++) | |
| 387 { | |
| 388 Dsymbol* dsym = (Dsymbol*)vtbl.data[k]; | |
| 389 assert(dsym); | |
| 390 //Logger::cout() << "vtblsym: " << dsym->toChars() << '\n'; | |
| 391 | |
| 392 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 393 fd->toObjFile(); | |
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394 assert(fd->llvmValue); |
| 9 | 395 llvm::Constant* c = llvm::cast<llvm::Constant>(fd->llvmValue); |
| 396 sinits.push_back(c); | |
| 397 sinits_ty.push_back(c->getType()); | |
| 398 } | |
| 399 else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { | |
| 400 const llvm::Type* cty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 401 llvm::Constant* c = llvm::Constant::getNullValue(cty); | |
| 402 sinits.push_back(c); | |
| 403 sinits_ty.push_back(cty); | |
| 404 } | |
| 405 else | |
| 406 assert(0); | |
| 407 } | |
| 408 | |
| 409 const llvm::StructType* svtbl_ty = 0; | |
| 410 if (!sinits.empty()) | |
| 411 { | |
| 412 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 413 | |
| 414 std::string varname(mangle()); | |
| 415 varname.append("__vtblZ"); | |
| 416 std::string styname(mangle()); | |
| 417 styname.append("__vtblTy"); | |
| 418 | |
| 419 svtbl_ty = llvm::StructType::get(sinits_ty); | |
| 420 gIR->module->addTypeName(styname, svtbl_ty); | |
| 421 svtblVar = new llvm::GlobalVariable(svtbl_ty, true, _linkage, 0, varname, gIR->module); | |
| 422 | |
| 423 if (define_vtable) { | |
| 424 svtblVar->setInitializer(llvm::ConstantStruct::get(svtbl_ty, sinits)); | |
| 425 } | |
| 426 llvmVtbl = svtblVar; | |
| 427 } | |
| 428 | |
| 429 //////////////////////////////////////////////////////////////////////////////// | |
| 430 | |
| 431 // refine for final vtable type | |
| 432 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(svtbl_ty); | |
| 433 svtbl_ty = llvm::cast<llvm::StructType>(pa.get()); | |
| 434 structtype = llvm::cast<llvm::StructType>(gIR->topstruct().recty.get()); | |
| 435 ts->llvmType = structtype; | |
| 436 llvmType = structtype; | |
| 437 | |
| 438 // generate initializer | |
| 439 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 440 llvm::Constant* _init = 0; | |
| 441 | |
| 442 // first field is always the vtable | |
| 443 assert(svtblVar != 0); | |
| 444 gIR->topstruct().inits[0] = svtblVar; | |
| 445 | |
| 446 _init = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 447 assert(_init); | |
| 448 std::string initname(mangle()); | |
| 449 initname.append("__initZ"); | |
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450 //Logger::cout() << *_init << '\n'; |
| 9 | 451 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, 0, initname, gIR->module); |
| 452 ts->llvmInit = initvar; | |
| 453 if (define_vtable) { | |
| 454 initvar->setInitializer(_init); | |
| 455 } | |
| 456 | |
| 457 // generate member function definitions | |
| 1 | 458 gIR->queueClassMethods.back() = false; |
| 459 IRState::FuncDeclVec& mfs = gIR->classmethods.back(); | |
| 460 size_t n = mfs.size(); | |
| 461 for (size_t i=0; i<n; ++i) { | |
| 462 mfs[i]->toObjFile(); | |
| 463 } | |
| 464 | |
| 465 gIR->queueClassMethods.pop_back(); | |
| 466 gIR->classmethods.pop_back(); | |
| 467 gIR->classes.pop_back(); | |
| 468 gIR->structs.pop_back(); | |
| 469 | |
| 470 llvmInProgress = false; | |
| 471 } | |
| 472 | |
| 473 /****************************************** | |
| 474 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 475 * Returns ~0 if not this csym. | |
| 476 */ | |
| 477 | |
| 478 unsigned ClassDeclaration::baseVtblOffset(BaseClass *bc) | |
| 479 { | |
| 480 return ~0; | |
| 481 } | |
| 482 | |
| 483 /* ================================================================== */ | |
| 484 | |
| 485 void VarDeclaration::toObjFile() | |
| 486 { | |
| 487 static int vdi = 0; | |
| 488 Logger::print("VarDeclaration::toObjFile(%d): %s | %s\n", vdi++, toChars(), type->toChars()); | |
| 489 LOG_SCOPE; | |
| 490 llvm::Module* M = gIR->module; | |
| 491 | |
| 492 // handle bind pragma | |
| 493 if (llvmInternal == LLVMbind) { | |
| 494 Logger::println("var is bound: %s", llvmInternal1); | |
| 495 llvmValue = M->getGlobalVariable(llvmInternal1); | |
| 496 assert(llvmValue); | |
| 497 return; | |
| 498 } | |
| 499 | |
| 500 // global variable or magic | |
| 501 if (!parent || parent->isModule()) | |
| 502 { | |
| 503 bool _isconst = isConst(); | |
| 504 if (!_isconst) | |
| 505 _isconst = (storage_class & STCconst) ? true : false; // doesn't seem to work ): | |
| 506 llvm::GlobalValue::LinkageTypes _linkage = LLVM_DtoLinkage(protection, storage_class); | |
| 507 const llvm::Type* _type = LLVM_DtoType(type); | |
| 508 | |
| 509 llvm::Constant* _init = 0; | |
| 510 bool _signed = !type->isunsigned(); | |
| 511 | |
| 512 _init = LLVM_DtoInitializer(type, init); | |
| 513 | |
| 514 assert(_type); | |
| 515 assert(_init); | |
| 516 //Logger::cout() << "initializer: " << *_init << '\n'; | |
| 517 if (_type != _init->getType()) { | |
| 518 Logger::cout() << "got type '" << *_init->getType() << "' expected '" << *_type << "'\n"; | |
| 519 // zero initalizer | |
| 520 if (_init->isNullValue()) | |
| 521 _init = llvm::Constant::getNullValue(_type); | |
| 522 // pointer to global constant (struct.init) | |
| 523 else if (llvm::isa<llvm::GlobalVariable>(_init)) | |
| 524 { | |
| 525 assert(_init->getType()->getContainedType(0) == _type); | |
| 526 llvm::GlobalVariable* gv = llvm::cast<llvm::GlobalVariable>(_init); | |
| 527 assert(type->ty == Tstruct); | |
| 528 TypeStruct* ts = (TypeStruct*)type; | |
| 529 assert(ts->sym->llvmInitZ); | |
| 530 _init = ts->sym->llvmInitZ; | |
| 531 } | |
| 532 // array single value init | |
| 533 else if (llvm::isa<llvm::ArrayType>(_type)) | |
| 534 { | |
| 535 const llvm::ArrayType* at = llvm::cast<llvm::ArrayType>(_type); | |
| 536 assert(_type->getContainedType(0) == _init->getType()); | |
| 537 std::vector<llvm::Constant*> initvals; | |
| 538 initvals.resize(at->getNumElements(), _init); | |
| 539 _init = llvm::ConstantArray::get(at, initvals); | |
| 540 } | |
| 541 else | |
| 542 assert(0); | |
| 543 } | |
| 544 | |
| 545 Logger::println("Creating global variable"); | |
| 546 std::string _name(mangle()); | |
| 547 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(_type,_isconst,_linkage,_init,_name,M); | |
| 548 llvmValue = gvar; | |
| 549 | |
| 550 //if (storage_class & STCprivate) | |
| 551 // gvar->setVisibility(llvm::GlobalValue::ProtectedVisibility); | |
| 552 } | |
| 553 | |
| 554 // inside aggregate declaration. declare a field. | |
| 555 else | |
| 556 { | |
| 557 Logger::println("Aggregate var declaration: '%s' offset=%d", toChars(), offset); | |
| 558 | |
| 559 const llvm::Type* _type = LLVM_DtoType(type); | |
| 560 gIR->topstruct().fields.push_back(_type); | |
| 561 | |
| 562 llvm::Constant* _init = LLVM_DtoInitializer(type, init); | |
| 563 if (_type != _init->getType()) | |
| 564 { | |
| 565 if (llvm::isa<llvm::ArrayType>(_type)) | |
| 566 { | |
| 567 const llvm::ArrayType* arrty = llvm::cast<llvm::ArrayType>(_type); | |
| 568 uint64_t n = arrty->getNumElements(); | |
| 569 std::vector<llvm::Constant*> vals(n,_init); | |
| 570 _init = llvm::ConstantArray::get(arrty, vals); | |
| 571 } | |
| 6 | 572 else if (llvm::isa<llvm::StructType>(_type)) { |
| 573 const llvm::StructType* structty = llvm::cast<llvm::StructType>(_type); | |
| 574 TypeStruct* ts = (TypeStruct*)type; | |
| 9 | 575 assert(ts); |
| 576 assert(ts->sym); | |
| 6 | 577 assert(ts->sym->llvmInitZ); |
| 578 _init = ts->sym->llvmInitZ; | |
| 579 } | |
| 1 | 580 else |
| 581 assert(0); | |
| 582 } | |
| 583 gIR->topstruct().inits.push_back(_init); | |
| 584 } | |
| 585 | |
| 586 Logger::println("VarDeclaration::toObjFile is done"); | |
| 587 } | |
| 588 | |
| 589 /* ================================================================== */ | |
| 590 | |
| 591 void TypedefDeclaration::toObjFile() | |
| 592 { | |
| 593 static int tdi = 0; | |
| 594 Logger::print("TypedefDeclaration::toObjFile(%d): %s\n", tdi++, toChars()); | |
| 595 LOG_SCOPE; | |
| 596 | |
| 597 // TODO | |
| 598 } | |
| 599 | |
| 600 /* ================================================================== */ | |
| 601 | |
| 602 void EnumDeclaration::toObjFile() | |
| 603 { | |
| 604 warning("Ignoring EnumDeclaration::toObjFile for %s", toChars()); | |
| 605 } | |
| 606 | |
| 607 /* ================================================================== */ | |
| 608 | |
| 609 void FuncDeclaration::toObjFile() | |
| 610 { | |
| 9 | 611 if (llvmDModule == gIR->dmodule) { |
| 612 assert(llvmValue != 0); | |
| 1 | 613 return; |
| 614 } | |
| 615 | |
| 9 | 616 llvm::Function* func = LLVM_DtoDeclareFunction(this); |
| 617 | |
| 1 | 618 if (!gIR->queueClassMethods.empty() && gIR->queueClassMethods.back()) { |
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619 if (!llvmQueued) { |
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620 Logger::println("queueing %s", toChars()); |
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621 assert(!gIR->classmethods.empty()); |
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622 gIR->classmethods.back().push_back(this); |
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623 llvmQueued = true; |
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624 } |
| 10 | 625 return; // we wait with the definition as they might invoke a virtual method and the vtable is not yet complete |
| 1 | 626 } |
| 627 | |
| 628 TypeFunction* f = (TypeFunction*)type; | |
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629 assert(f->llvmType); |
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630 const llvm::FunctionType* functype = llvm::cast<llvm::FunctionType>(llvmValue->getType()->getContainedType(0)); |
| 1 | 631 |
| 632 // only members of the current module maybe be defined | |
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633 if (getModule() == gIR->dmodule || parent->isTemplateInstance()) |
| 1 | 634 { |
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635 llvmDModule = gIR->dmodule; |
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636 |
| 1 | 637 bool allow_fbody = true; |
| 638 // handle static constructor / destructor | |
| 639 if (isStaticCtorDeclaration() || isStaticDtorDeclaration()) { | |
| 640 const llvm::ArrayType* sctor_type = llvm::ArrayType::get(llvm::PointerType::get(functype),1); | |
| 641 //Logger::cout() << "static ctor type: " << *sctor_type << '\n'; | |
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642 |
| 1 | 643 llvm::Constant* sctor_func = llvm::cast<llvm::Constant>(llvmValue); |
| 644 //Logger::cout() << "static ctor func: " << *sctor_func << '\n'; | |
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645 |
| 1 | 646 llvm::Constant* sctor_init = 0; |
| 647 if (llvmInternal == LLVMnull) | |
| 648 { | |
| 649 llvm::Constant* sctor_init_null = llvm::Constant::getNullValue(sctor_func->getType()); | |
| 650 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_init_null,1); | |
| 651 allow_fbody = false; | |
| 652 } | |
| 653 else | |
| 654 { | |
| 655 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_func,1); | |
| 656 } | |
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657 |
| 1 | 658 //Logger::cout() << "static ctor init: " << *sctor_init << '\n'; |
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659 |
| 1 | 660 // output the llvm.global_ctors array |
| 661 const char* varname = isStaticCtorDeclaration() ? "_d_module_ctor_array" : "_d_module_dtor_array"; | |
| 662 llvm::GlobalVariable* sctor_arr = new llvm::GlobalVariable(sctor_type, false, llvm::GlobalValue::AppendingLinkage, sctor_init, varname, gIR->module); | |
| 663 } | |
| 664 | |
| 665 // function definition | |
| 666 if (allow_fbody && fbody != 0) | |
| 667 { | |
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668 gIR->funcdecls.push_back(this); |
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669 |
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670 // first make absolutely sure the type is up to date |
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671 f->llvmType = llvmValue->getType()->getContainedType(0); |
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672 |
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673 // this handling |
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674 if (f->llvmUsesThis) { |
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675 if (f->llvmRetInPtr) |
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676 llvmThisVar = ++func->arg_begin(); |
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677 else |
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678 llvmThisVar = func->arg_begin(); |
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679 assert(llvmThisVar != 0); |
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680 } |
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681 |
| 9 | 682 if (isMain()) |
| 683 gIR->emitMain = true; | |
| 684 | |
| 1 | 685 gIR->funcs.push(func); |
| 686 gIR->functypes.push(f); | |
| 687 | |
| 688 IRScope irs; | |
| 689 irs.begin = new llvm::BasicBlock("entry",func); | |
| 690 irs.end = new llvm::BasicBlock("endentry",func); | |
| 691 | |
| 692 //assert(gIR->scopes.empty()); | |
| 693 gIR->scopes.push_back(irs); | |
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694 |
| 1 | 695 // create alloca point |
| 696 f->llvmAllocaPoint = new llvm::BitCastInst(llvm::ConstantInt::get(llvm::Type::Int32Ty,0,false),llvm::Type::Int32Ty,"alloca point",gIR->scopebb()); | |
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697 |
| 1 | 698 // output function body |
| 699 fbody->toIR(gIR); | |
| 700 | |
| 701 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 702 // in automatically, so we do it here. | |
| 703 if (!isMain() && (gIR->scopebb()->empty() || !llvm::isa<llvm::TerminatorInst>(gIR->scopebb()->back()))) { | |
| 704 // pass the previous block into this block | |
| 705 //new llvm::BranchInst(irs.end, irs.begin); | |
| 706 new llvm::ReturnInst(gIR->scopebb()); | |
| 707 } | |
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708 |
| 1 | 709 // erase alloca point |
| 710 f->llvmAllocaPoint->eraseFromParent(); | |
| 711 f->llvmAllocaPoint = 0; | |
| 712 | |
| 713 gIR->scopes.pop_back(); | |
| 714 //assert(gIR->scopes.empty()); | |
| 715 | |
| 716 gIR->functypes.pop(); | |
| 717 gIR->funcs.pop(); | |
| 718 | |
| 719 // get rid of the endentry block, it's never used | |
| 9 | 720 assert(!func->getBasicBlockList().empty()); |
| 1 | 721 func->getBasicBlockList().pop_back(); |
| 722 | |
| 723 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 9 | 724 // would be nice to figure out how to assert that this is correct |
| 1 | 725 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); |
| 726 if (lastbb->empty()) { | |
| 9 | 727 // possibly assert(lastbb->getNumPredecessors() == 0); ??? try it out sometime ... |
| 1 | 728 new llvm::UnreachableInst(lastbb); |
| 729 } | |
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730 |
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731 gIR->funcdecls.pop_back(); |
| 1 | 732 } |
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733 |
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734 // template instances should have weak linkage |
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735 if (parent->isTemplateInstance()) { |
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736 func->setLinkage(llvm::GlobalValue::WeakLinkage); |
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737 } |
| 1 | 738 } |
| 739 } |