Mercurial > projects > ldc
annotate gen/toobj.c @ 9:dafae18f9c08 trunk
[svn r13] * Updated for LLVM 2.1
* Class v-tables are now typesafe
* Code cleanups
| author | lindquist |
|---|---|
| date | Mon, 01 Oct 2007 21:19:53 +0200 |
| parents | 5e69b77a5c51 |
| children | c0f2c47e5034 |
| 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 | |
| 6 | 83 // verify the llvm |
| 1 | 84 std::string verifyErr; |
| 85 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) | |
| 86 { | |
| 87 error("%s", verifyErr.c_str()); | |
| 88 fatal(); | |
| 89 } | |
| 90 | |
| 6 | 91 // emit the llvm main function if necessary |
| 1 | 92 if (ir.emitMain) { |
| 93 LLVM_DtoMain(); | |
| 94 } | |
| 95 | |
| 96 // run passes | |
| 97 // TODO | |
| 98 | |
| 99 /*if (global.params.llvmLL) { | |
| 100 //assert(0); | |
| 101 std::ofstream os(llfile->name->toChars()); | |
| 102 //llvm::WriteAssemblyToFile(ir.module, os); | |
| 103 ir.module->print(os); | |
| 104 }*/ | |
| 105 | |
| 6 | 106 // write bytecode |
| 1 | 107 //if (global.params.llvmBC) { |
| 108 Logger::println("Writing LLVM bitcode\n"); | |
| 109 std::ofstream os(bcfile->name->toChars(), std::ios::binary); | |
| 110 llvm::WriteBitcodeToFile(ir.module, os); | |
| 111 //} | |
| 112 | |
| 113 delete ir.module; | |
| 114 gIR = NULL; | |
| 115 } | |
| 116 | |
| 117 /* ================================================================== */ | |
| 118 | |
| 119 // Put out instance of ModuleInfo for this Module | |
| 120 | |
| 121 void Module::genmoduleinfo() | |
| 122 { | |
| 123 } | |
| 124 | |
| 125 /* ================================================================== */ | |
| 126 | |
| 127 void Dsymbol::toObjFile() | |
| 128 { | |
| 129 warning("Ignoring Dsymbol::toObjFile for %s", toChars()); | |
| 130 } | |
| 131 | |
| 132 /* ================================================================== */ | |
| 133 | |
| 134 void Declaration::toObjFile() | |
| 135 { | |
| 136 warning("Ignoring Declaration::toObjFile for %s", toChars()); | |
| 137 } | |
| 138 | |
| 139 /* ================================================================== */ | |
| 140 | |
| 6 | 141 /// Returns the LLVM style index from a DMD style offset |
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142 void AggregateDeclaration::offsetToIndex(unsigned os, std::vector<unsigned>& result) |
| 1 | 143 { |
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144 unsigned vos = 0; |
| 1 | 145 for (unsigned i=0; i<fields.dim; ++i) { |
| 146 VarDeclaration* vd = (VarDeclaration*)fields.data[i]; | |
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147 if (vd->type->ty == Tstruct) { |
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148 if (vos + vd->type->size() > os) { |
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149 TypeStruct* ts = (TypeStruct*)vd->type; |
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150 StructDeclaration* sd = ts->sym; |
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151 result.push_back(i); |
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152 sd->offsetToIndex(os - vos, result); |
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153 return; |
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154 } |
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155 } |
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156 else if (os == vd->offset) { |
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157 result.push_back(i); |
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158 return; |
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159 } |
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160 vos += vd->offset; |
| 1 | 161 } |
| 162 assert(0 && "Offset not found in any aggregate field"); | |
| 163 } | |
| 164 | |
| 165 /* ================================================================== */ | |
| 166 | |
| 167 static unsigned LLVM_ClassOffsetToIndex(ClassDeclaration* cd, unsigned os, unsigned& idx) | |
| 168 { | |
| 169 // start at the bottom of the inheritance chain | |
| 170 if (cd->baseClass != 0) { | |
| 171 unsigned o = LLVM_ClassOffsetToIndex(cd->baseClass, os, idx); | |
| 172 if (o != (unsigned)-1) | |
| 173 return o; | |
| 174 } | |
| 175 | |
| 176 // check this class | |
| 177 unsigned i; | |
| 178 for (i=0; i<cd->fields.dim; ++i) { | |
| 179 VarDeclaration* vd = (VarDeclaration*)cd->fields.data[i]; | |
| 180 if (os == vd->offset) | |
| 181 return i+idx; | |
| 182 } | |
| 183 idx += i; | |
| 184 | |
| 185 return (unsigned)-1; | |
| 186 } | |
| 187 | |
| 6 | 188 /// Returns the LLVM style index from a DMD style offset |
| 189 /// Handles class inheritance | |
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190 void ClassDeclaration::offsetToIndex(unsigned os, std::vector<unsigned>& result) |
| 1 | 191 { |
| 192 unsigned idx = 0; | |
| 193 unsigned r = LLVM_ClassOffsetToIndex(this, os, idx); | |
| 194 assert(r != (unsigned)-1 && "Offset not found in any aggregate field"); | |
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195 result.push_back(r+1); // vtable is 0 |
| 1 | 196 } |
| 197 | |
| 198 /* ================================================================== */ | |
| 199 | |
| 200 void InterfaceDeclaration::toObjFile() | |
| 201 { | |
| 202 warning("Ignoring InterfaceDeclaration::toObjFile for %s", toChars()); | |
| 203 } | |
| 204 | |
| 205 /* ================================================================== */ | |
| 206 | |
| 207 void StructDeclaration::toObjFile() | |
| 208 { | |
| 209 TypeStruct* ts = (TypeStruct*)type; | |
| 210 if (llvmType != 0) | |
| 211 return; | |
| 212 | |
| 213 static int sdi = 0; | |
| 214 Logger::print("StructDeclaration::toObjFile(%d): %s\n", sdi++, toChars()); | |
| 215 LOG_SCOPE; | |
| 216 | |
| 217 gIR->structs.push_back(IRStruct(ts)); | |
| 218 | |
| 219 std::vector<FuncDeclaration*> mfs; | |
| 220 | |
| 221 for (int k=0; k < members->dim; k++) { | |
| 222 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 223 | |
| 224 // need late generation of member functions | |
| 225 // they need the llvm::StructType to exist to take the 'this' parameter | |
| 226 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 227 mfs.push_back(fd); | |
| 228 } | |
| 229 else { | |
| 230 dsym->toObjFile(); | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 235 | |
| 236 // refine abstract types for stuff like: struct S{S* next;} | |
| 237 if (gIR->topstruct().recty != 0) | |
| 238 { | |
| 239 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 240 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 241 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 242 } | |
| 243 | |
| 244 ts->llvmType = structtype; | |
| 245 llvmType = structtype; | |
| 246 | |
| 247 if (parent->isModule()) { | |
| 248 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 249 } | |
| 250 | |
| 251 // generate static data | |
| 252 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 253 llvm::Constant* _init = 0; | |
| 254 | |
| 255 // always generate the constant initalizer | |
| 256 if (!zeroInit) { | |
| 257 Logger::println("Not zero initialized"); | |
| 258 //assert(tk == gIR->topstruct().size()); | |
| 259 #ifndef LLVMD_NO_LOGGER | |
| 260 Logger::cout() << *structtype << '\n'; | |
| 261 for (size_t k=0; k<gIR->topstruct().inits.size(); ++k) { | |
| 262 Logger::cout() << "Type:" << '\n'; | |
| 263 Logger::cout() << *gIR->topstruct().inits[k]->getType() << '\n'; | |
| 264 Logger::cout() << "Value:" << '\n'; | |
| 265 Logger::cout() << *gIR->topstruct().inits[k] << '\n'; | |
| 266 } | |
| 267 Logger::cout() << "Initializer printed" << '\n'; | |
| 268 #endif | |
| 269 llvmInitZ = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 270 } | |
| 271 else { | |
| 272 Logger::println("Zero initialized"); | |
| 273 llvmInitZ = llvm::ConstantAggregateZero::get(structtype); | |
| 274 } | |
| 275 | |
| 276 // only provide the constant initializer for the defining module | |
| 277 if (getModule() == gIR->dmodule) | |
| 278 { | |
| 279 _init = llvmInitZ; | |
| 280 } | |
| 281 | |
| 282 std::string initname(mangle()); | |
| 283 initname.append("__initZ"); | |
| 284 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, _init, initname, gIR->module); | |
| 285 ts->llvmInit = initvar; | |
| 286 | |
| 287 // generate member functions | |
| 288 size_t n = mfs.size(); | |
| 289 for (size_t i=0; i<n; ++i) { | |
| 290 mfs[i]->toObjFile(); | |
| 291 } | |
| 292 | |
| 293 llvmDModule = gIR->dmodule; | |
| 294 | |
| 295 gIR->structs.pop_back(); | |
| 296 | |
| 297 // generate typeinfo | |
| 298 type->getTypeInfo(NULL); // generate TypeInfo | |
| 299 } | |
| 300 | |
| 301 /* ================================================================== */ | |
| 302 | |
| 303 static void LLVM_AddBaseClassData(BaseClasses* bcs) | |
| 304 { | |
| 305 // add base class data members first | |
| 306 for (int j=0; j<bcs->dim; j++) | |
| 307 { | |
| 308 BaseClass* bc = (BaseClass*)(bcs->data[j]); | |
| 309 assert(bc); | |
| 310 LLVM_AddBaseClassData(&bc->base->baseclasses); | |
| 311 for (int k=0; k < bc->base->members->dim; k++) { | |
| 312 Dsymbol* dsym = (Dsymbol*)(bc->base->members->data[k]); | |
| 313 if (dsym->isVarDeclaration()) | |
| 314 { | |
| 315 dsym->toObjFile(); | |
| 316 } | |
| 317 } | |
| 318 } | |
| 319 } | |
| 320 | |
| 321 void ClassDeclaration::toObjFile() | |
| 322 { | |
| 323 TypeClass* ts = (TypeClass*)type; | |
| 324 if (ts->llvmType != 0 || llvmInProgress) | |
| 325 return; | |
| 326 | |
| 327 llvmInProgress = true; | |
| 328 | |
| 329 static int fdi = 0; | |
| 330 Logger::print("ClassDeclaration::toObjFile(%d): %s\n", fdi++, toChars()); | |
| 331 LOG_SCOPE; | |
| 332 | |
| 6 | 333 gIR->structs.push_back(IRStruct(ts)); |
| 1 | 334 gIR->classes.push_back(this); |
| 335 gIR->classmethods.push_back(IRState::FuncDeclVec()); | |
| 336 gIR->queueClassMethods.push_back(true); | |
| 337 | |
| 338 // add vtable | |
| 9 | 339 llvm::PATypeHolder pa = llvm::OpaqueType::get(); |
| 340 const llvm::Type* vtabty = llvm::PointerType::get(pa); | |
| 1 | 341 gIR->topstruct().fields.push_back(vtabty); |
| 342 gIR->topstruct().inits.push_back(0); | |
| 343 | |
| 344 // base classes first | |
| 345 LLVM_AddBaseClassData(&baseclasses); | |
| 346 | |
| 347 // then add own members | |
| 348 for (int k=0; k < members->dim; k++) { | |
| 349 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 350 dsym->toObjFile(); | |
| 351 } | |
| 352 | |
| 353 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 6 | 354 // refine abstract types for stuff like: class C {C next;} |
| 355 if (gIR->topstruct().recty != 0) | |
| 356 { | |
| 357 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 358 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 359 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 360 } | |
| 361 | |
| 1 | 362 ts->llvmType = structtype; |
| 363 llvmType = structtype; | |
| 364 | |
| 365 bool define_vtable = false; | |
| 366 if (parent->isModule()) { | |
| 367 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 368 define_vtable = (getModule() == gIR->dmodule); | |
| 369 } | |
| 370 else { | |
| 371 assert(0 && "class parent is not a module"); | |
| 372 } | |
| 373 | |
| 9 | 374 // generate vtable |
| 375 llvm::GlobalVariable* svtblVar = 0; | |
| 376 std::vector<llvm::Constant*> sinits; | |
| 377 std::vector<const llvm::Type*> sinits_ty; | |
| 378 sinits.reserve(vtbl.dim); | |
| 379 sinits_ty.reserve(vtbl.dim); | |
| 380 | |
| 381 for (int k=0; k < vtbl.dim; k++) | |
| 382 { | |
| 383 Dsymbol* dsym = (Dsymbol*)vtbl.data[k]; | |
| 384 assert(dsym); | |
| 385 //Logger::cout() << "vtblsym: " << dsym->toChars() << '\n'; | |
| 386 | |
| 387 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 388 fd->toObjFile(); | |
| 389 llvm::Constant* c = llvm::cast<llvm::Constant>(fd->llvmValue); | |
| 390 sinits.push_back(c); | |
| 391 sinits_ty.push_back(c->getType()); | |
| 392 } | |
| 393 else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { | |
| 394 const llvm::Type* cty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 395 llvm::Constant* c = llvm::Constant::getNullValue(cty); | |
| 396 sinits.push_back(c); | |
| 397 sinits_ty.push_back(cty); | |
| 398 } | |
| 399 else | |
| 400 assert(0); | |
| 401 } | |
| 402 | |
| 403 const llvm::StructType* svtbl_ty = 0; | |
| 404 if (!sinits.empty()) | |
| 405 { | |
| 406 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 407 | |
| 408 std::string varname(mangle()); | |
| 409 varname.append("__vtblZ"); | |
| 410 std::string styname(mangle()); | |
| 411 styname.append("__vtblTy"); | |
| 412 | |
| 413 svtbl_ty = llvm::StructType::get(sinits_ty); | |
| 414 gIR->module->addTypeName(styname, svtbl_ty); | |
| 415 svtblVar = new llvm::GlobalVariable(svtbl_ty, true, _linkage, 0, varname, gIR->module); | |
| 416 | |
| 417 if (define_vtable) { | |
| 418 svtblVar->setInitializer(llvm::ConstantStruct::get(svtbl_ty, sinits)); | |
| 419 } | |
| 420 llvmVtbl = svtblVar; | |
| 421 } | |
| 422 | |
| 423 //////////////////////////////////////////////////////////////////////////////// | |
| 424 | |
| 425 // refine for final vtable type | |
| 426 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(svtbl_ty); | |
| 427 svtbl_ty = llvm::cast<llvm::StructType>(pa.get()); | |
| 428 structtype = llvm::cast<llvm::StructType>(gIR->topstruct().recty.get()); | |
| 429 ts->llvmType = structtype; | |
| 430 llvmType = structtype; | |
| 431 | |
| 432 // generate initializer | |
| 433 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 434 llvm::Constant* _init = 0; | |
| 435 | |
| 436 // first field is always the vtable | |
| 437 assert(svtblVar != 0); | |
| 438 gIR->topstruct().inits[0] = svtblVar; | |
| 439 | |
| 440 //assert(tk == gIR->topstruct().size()); | |
| 441 #ifndef LLVMD_NO_LOGGER | |
| 442 Logger::cout() << *structtype << '\n'; | |
| 443 //for (size_t k=0; k<gIR->topstruct().inits.size(); ++k) | |
| 444 // Logger::cout() << *gIR->topstruct().inits[k] << '\n'; | |
| 445 #endif | |
| 446 _init = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 447 assert(_init); | |
| 448 std::string initname(mangle()); | |
| 449 initname.append("__initZ"); | |
| 450 Logger::cout() << *_init << '\n'; | |
| 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()) { |
| 619 Logger::println("queueing %s", toChars()); | |
| 620 assert(!gIR->classmethods.empty()); | |
| 621 gIR->classmethods.back().push_back(this); | |
| 622 return; // will be generated later when the this parameter has a type | |
| 623 } | |
| 624 | |
| 9 | 625 if (llvmNeedsDefinition) |
| 626 { | |
| 1 | 627 |
| 628 TypeFunction* f = (TypeFunction*)type; | |
| 9 | 629 llvm::FunctionType* functype = llvm::cast<llvm::FunctionType>(f->llvmType); |
| 1 | 630 |
| 631 // only members of the current module maybe be defined | |
| 632 if (getModule() == gIR->dmodule) | |
| 633 { | |
| 634 bool allow_fbody = true; | |
| 635 // handle static constructor / destructor | |
| 636 if (isStaticCtorDeclaration() || isStaticDtorDeclaration()) { | |
| 637 const llvm::ArrayType* sctor_type = llvm::ArrayType::get(llvm::PointerType::get(functype),1); | |
| 638 //Logger::cout() << "static ctor type: " << *sctor_type << '\n'; | |
| 639 | |
| 640 llvm::Constant* sctor_func = llvm::cast<llvm::Constant>(llvmValue); | |
| 641 //Logger::cout() << "static ctor func: " << *sctor_func << '\n'; | |
| 642 | |
| 643 llvm::Constant* sctor_init = 0; | |
| 644 if (llvmInternal == LLVMnull) | |
| 645 { | |
| 646 llvm::Constant* sctor_init_null = llvm::Constant::getNullValue(sctor_func->getType()); | |
| 647 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_init_null,1); | |
| 648 allow_fbody = false; | |
| 649 } | |
| 650 else | |
| 651 { | |
| 652 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_func,1); | |
| 653 } | |
| 654 | |
| 655 //Logger::cout() << "static ctor init: " << *sctor_init << '\n'; | |
| 656 | |
| 657 | |
| 658 // output the llvm.global_ctors array | |
| 659 const char* varname = isStaticCtorDeclaration() ? "_d_module_ctor_array" : "_d_module_dtor_array"; | |
| 660 llvm::GlobalVariable* sctor_arr = new llvm::GlobalVariable(sctor_type, false, llvm::GlobalValue::AppendingLinkage, sctor_init, varname, gIR->module); | |
| 661 } | |
| 662 | |
| 663 // function definition | |
| 664 if (allow_fbody && fbody != 0) | |
| 665 { | |
| 9 | 666 if (isMain()) |
| 667 gIR->emitMain = true; | |
| 668 | |
| 1 | 669 gIR->funcs.push(func); |
| 670 gIR->functypes.push(f); | |
| 671 | |
| 672 IRScope irs; | |
| 673 irs.begin = new llvm::BasicBlock("entry",func); | |
| 674 irs.end = new llvm::BasicBlock("endentry",func); | |
| 675 | |
| 676 //assert(gIR->scopes.empty()); | |
| 677 gIR->scopes.push_back(irs); | |
| 678 | |
| 679 // create alloca point | |
| 680 f->llvmAllocaPoint = new llvm::BitCastInst(llvm::ConstantInt::get(llvm::Type::Int32Ty,0,false),llvm::Type::Int32Ty,"alloca point",gIR->scopebb()); | |
| 681 | |
| 682 // output function body | |
| 683 fbody->toIR(gIR); | |
| 684 | |
| 685 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 686 // in automatically, so we do it here. | |
| 687 if (!isMain() && (gIR->scopebb()->empty() || !llvm::isa<llvm::TerminatorInst>(gIR->scopebb()->back()))) { | |
| 688 // pass the previous block into this block | |
| 689 //new llvm::BranchInst(irs.end, irs.begin); | |
| 690 new llvm::ReturnInst(gIR->scopebb()); | |
| 691 } | |
| 692 | |
| 693 // erase alloca point | |
| 694 f->llvmAllocaPoint->eraseFromParent(); | |
| 695 f->llvmAllocaPoint = 0; | |
| 696 | |
| 697 gIR->scopes.pop_back(); | |
| 698 //assert(gIR->scopes.empty()); | |
| 699 | |
| 700 gIR->functypes.pop(); | |
| 701 gIR->funcs.pop(); | |
| 702 | |
| 703 // get rid of the endentry block, it's never used | |
| 9 | 704 assert(!func->getBasicBlockList().empty()); |
| 1 | 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 | |
| 9 | 708 // would be nice to figure out how to assert that this is correct |
| 1 | 709 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); |
| 710 if (lastbb->empty()) { | |
| 9 | 711 // possibly assert(lastbb->getNumPredecessors() == 0); ??? try it out sometime ... |
| 1 | 712 new llvm::UnreachableInst(lastbb); |
| 713 } | |
| 714 } | |
| 715 } | |
| 9 | 716 |
| 1 | 717 } |
| 718 | |
| 719 llvmDModule = gIR->dmodule; | |
| 720 | |
| 721 Logger::println("FuncDeclaration done\n"); | |
| 722 } |