Mercurial > projects > ldc
annotate gen/toobj.c @ 6:35d93ce68cf4 trunk
[svn r10] Updated for LLVM rev. 20070913
Applied fixes from wilsonk on the forum
Some tweaks to work with gc 7.0
Fixed aggregate members of aggregates
Fixed cyclic/recursive class declarations
Other minor tweaks
| author | lindquist |
|---|---|
| date | Wed, 26 Sep 2007 19:05:18 +0200 |
| parents | e116aa1488e6 |
| children | 5e69b77a5c51 |
| 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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e116aa1488e6
[svn r8] changed backend includes to always use the gen/<foo>.h prefix
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38 #include "gen/irstate.h" |
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e116aa1488e6
[svn r8] changed backend includes to always use the gen/<foo>.h prefix
lindquist
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39 #include "gen/elem.h" |
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e116aa1488e6
[svn r8] changed backend includes to always use the gen/<foo>.h prefix
lindquist
parents:
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40 #include "gen/logger.h" |
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e116aa1488e6
[svn r8] changed backend includes to always use the gen/<foo>.h prefix
lindquist
parents:
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changeset
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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 |
| 1 | 142 unsigned AggregateDeclaration::offsetToIndex(unsigned os) |
| 143 { | |
| 144 for (unsigned i=0; i<fields.dim; ++i) { | |
| 145 VarDeclaration* vd = (VarDeclaration*)fields.data[i]; | |
| 146 if (os == vd->offset) | |
| 147 return i; | |
| 148 } | |
| 149 assert(0 && "Offset not found in any aggregate field"); | |
| 150 return 0; | |
| 151 } | |
| 152 | |
| 153 /* ================================================================== */ | |
| 154 | |
| 155 static unsigned LLVM_ClassOffsetToIndex(ClassDeclaration* cd, unsigned os, unsigned& idx) | |
| 156 { | |
| 157 // start at the bottom of the inheritance chain | |
| 158 if (cd->baseClass != 0) { | |
| 159 unsigned o = LLVM_ClassOffsetToIndex(cd->baseClass, os, idx); | |
| 160 if (o != (unsigned)-1) | |
| 161 return o; | |
| 162 } | |
| 163 | |
| 164 // check this class | |
| 165 unsigned i; | |
| 166 for (i=0; i<cd->fields.dim; ++i) { | |
| 167 VarDeclaration* vd = (VarDeclaration*)cd->fields.data[i]; | |
| 168 if (os == vd->offset) | |
| 169 return i+idx; | |
| 170 } | |
| 171 idx += i; | |
| 172 | |
| 173 return (unsigned)-1; | |
| 174 } | |
| 175 | |
| 6 | 176 /// Returns the LLVM style index from a DMD style offset |
| 177 /// Handles class inheritance | |
| 1 | 178 unsigned ClassDeclaration::offsetToIndex(unsigned os) |
| 179 { | |
| 180 unsigned idx = 0; | |
| 181 unsigned r = LLVM_ClassOffsetToIndex(this, os, idx); | |
| 182 assert(r != (unsigned)-1 && "Offset not found in any aggregate field"); | |
| 183 return r+1; // vtable is 0 | |
| 184 } | |
| 185 | |
| 186 /* ================================================================== */ | |
| 187 | |
| 188 void InterfaceDeclaration::toObjFile() | |
| 189 { | |
| 190 warning("Ignoring InterfaceDeclaration::toObjFile for %s", toChars()); | |
| 191 } | |
| 192 | |
| 193 /* ================================================================== */ | |
| 194 | |
| 195 void StructDeclaration::toObjFile() | |
| 196 { | |
| 197 TypeStruct* ts = (TypeStruct*)type; | |
| 198 if (llvmType != 0) | |
| 199 return; | |
| 200 | |
| 201 static int sdi = 0; | |
| 202 Logger::print("StructDeclaration::toObjFile(%d): %s\n", sdi++, toChars()); | |
| 203 LOG_SCOPE; | |
| 204 | |
| 205 gIR->structs.push_back(IRStruct(ts)); | |
| 206 | |
| 207 std::vector<FuncDeclaration*> mfs; | |
| 208 | |
| 209 for (int k=0; k < members->dim; k++) { | |
| 210 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 211 | |
| 212 // need late generation of member functions | |
| 213 // they need the llvm::StructType to exist to take the 'this' parameter | |
| 214 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 215 mfs.push_back(fd); | |
| 216 } | |
| 217 else { | |
| 218 dsym->toObjFile(); | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 223 | |
| 224 // refine abstract types for stuff like: struct S{S* next;} | |
| 225 if (gIR->topstruct().recty != 0) | |
| 226 { | |
| 227 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 228 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 229 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 230 } | |
| 231 | |
| 232 ts->llvmType = structtype; | |
| 233 llvmType = structtype; | |
| 234 | |
| 235 if (parent->isModule()) { | |
| 236 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 237 } | |
| 238 | |
| 239 // generate static data | |
| 240 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 241 llvm::Constant* _init = 0; | |
| 242 | |
| 243 // always generate the constant initalizer | |
| 244 if (!zeroInit) { | |
| 245 Logger::println("Not zero initialized"); | |
| 246 //assert(tk == gIR->topstruct().size()); | |
| 247 #ifndef LLVMD_NO_LOGGER | |
| 248 Logger::cout() << *structtype << '\n'; | |
| 249 for (size_t k=0; k<gIR->topstruct().inits.size(); ++k) { | |
| 250 Logger::cout() << "Type:" << '\n'; | |
| 251 Logger::cout() << *gIR->topstruct().inits[k]->getType() << '\n'; | |
| 252 Logger::cout() << "Value:" << '\n'; | |
| 253 Logger::cout() << *gIR->topstruct().inits[k] << '\n'; | |
| 254 } | |
| 255 Logger::cout() << "Initializer printed" << '\n'; | |
| 256 #endif | |
| 257 llvmInitZ = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 258 } | |
| 259 else { | |
| 260 Logger::println("Zero initialized"); | |
| 261 llvmInitZ = llvm::ConstantAggregateZero::get(structtype); | |
| 262 } | |
| 263 | |
| 264 // only provide the constant initializer for the defining module | |
| 265 if (getModule() == gIR->dmodule) | |
| 266 { | |
| 267 _init = llvmInitZ; | |
| 268 } | |
| 269 | |
| 270 std::string initname(mangle()); | |
| 271 initname.append("__initZ"); | |
| 272 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, _init, initname, gIR->module); | |
| 273 ts->llvmInit = initvar; | |
| 274 | |
| 275 // generate member functions | |
| 276 size_t n = mfs.size(); | |
| 277 for (size_t i=0; i<n; ++i) { | |
| 278 mfs[i]->toObjFile(); | |
| 279 } | |
| 280 | |
| 281 llvmDModule = gIR->dmodule; | |
| 282 | |
| 283 gIR->structs.pop_back(); | |
| 284 | |
| 285 // generate typeinfo | |
| 286 type->getTypeInfo(NULL); // generate TypeInfo | |
| 287 } | |
| 288 | |
| 289 /* ================================================================== */ | |
| 290 | |
| 291 static void LLVM_AddBaseClassData(BaseClasses* bcs) | |
| 292 { | |
| 293 // add base class data members first | |
| 294 for (int j=0; j<bcs->dim; j++) | |
| 295 { | |
| 296 BaseClass* bc = (BaseClass*)(bcs->data[j]); | |
| 297 assert(bc); | |
| 298 LLVM_AddBaseClassData(&bc->base->baseclasses); | |
| 299 for (int k=0; k < bc->base->members->dim; k++) { | |
| 300 Dsymbol* dsym = (Dsymbol*)(bc->base->members->data[k]); | |
| 301 if (dsym->isVarDeclaration()) | |
| 302 { | |
| 303 dsym->toObjFile(); | |
| 304 } | |
| 305 } | |
| 306 } | |
| 307 } | |
| 308 | |
| 309 void ClassDeclaration::toObjFile() | |
| 310 { | |
| 311 TypeClass* ts = (TypeClass*)type; | |
| 312 if (ts->llvmType != 0 || llvmInProgress) | |
| 313 return; | |
| 314 | |
| 315 llvmInProgress = true; | |
| 316 | |
| 317 static int fdi = 0; | |
| 318 Logger::print("ClassDeclaration::toObjFile(%d): %s\n", fdi++, toChars()); | |
| 319 LOG_SCOPE; | |
| 320 | |
| 6 | 321 gIR->structs.push_back(IRStruct(ts)); |
| 1 | 322 gIR->classes.push_back(this); |
| 323 gIR->classmethods.push_back(IRState::FuncDeclVec()); | |
| 324 gIR->queueClassMethods.push_back(true); | |
| 325 | |
| 326 // add vtable | |
| 327 const llvm::Type* vtabty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 328 gIR->topstruct().fields.push_back(vtabty); | |
| 329 gIR->topstruct().inits.push_back(0); | |
| 330 | |
| 331 // base classes first | |
| 332 LLVM_AddBaseClassData(&baseclasses); | |
| 333 | |
| 334 // then add own members | |
| 335 for (int k=0; k < members->dim; k++) { | |
| 336 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 337 dsym->toObjFile(); | |
| 338 } | |
| 339 | |
| 340 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 6 | 341 // refine abstract types for stuff like: class C {C next;} |
| 342 if (gIR->topstruct().recty != 0) | |
| 343 { | |
| 344 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 345 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 346 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 347 } | |
| 348 | |
| 1 | 349 ts->llvmType = structtype; |
| 350 llvmType = structtype; | |
| 351 | |
| 352 bool emit_vtable = false; | |
| 353 bool define_vtable = false; | |
| 354 if (parent->isModule()) { | |
| 355 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 356 emit_vtable = true; | |
| 357 define_vtable = (getModule() == gIR->dmodule); | |
| 358 } | |
| 359 else { | |
| 360 assert(0 && "class parent is not a module"); | |
| 361 } | |
| 362 | |
| 363 // generate member functions | |
| 364 gIR->queueClassMethods.back() = false; | |
| 365 IRState::FuncDeclVec& mfs = gIR->classmethods.back(); | |
| 366 size_t n = mfs.size(); | |
| 367 for (size_t i=0; i<n; ++i) { | |
| 368 mfs[i]->toObjFile(); | |
| 369 } | |
| 370 | |
| 371 // create vtable initializer | |
| 372 if (emit_vtable) | |
| 373 { | |
| 374 llvm::GlobalVariable* vtblVar = 0; | |
| 375 std::vector<llvm::Constant*> inits; | |
| 376 inits.reserve(vtbl.dim); | |
| 377 for (int k=0; k < vtbl.dim; k++) | |
| 378 { | |
| 379 Dsymbol* dsym = (Dsymbol*)vtbl.data[k]; | |
| 380 assert(dsym); | |
| 381 //Logger::cout() << "vtblsym: " << dsym->toChars() << '\n'; | |
| 382 | |
| 383 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 384 fd->toObjFile(); | |
| 385 Logger::cout() << "casting to constant" << *fd->llvmValue << '\n'; | |
| 386 llvm::Constant* c = llvm::cast<llvm::Constant>(fd->llvmValue); | |
| 387 c = llvm::ConstantExpr::getBitCast(c, llvm::PointerType::get(llvm::Type::Int8Ty)); | |
| 388 inits.push_back(c); | |
| 389 } | |
| 390 else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { | |
| 391 llvm::Constant* c = llvm::Constant::getNullValue(llvm::PointerType::get(llvm::Type::Int8Ty)); | |
| 392 inits.push_back(c); | |
| 393 } | |
| 394 else | |
| 395 assert(0); | |
| 396 } | |
| 397 if (!inits.empty()) | |
| 398 { | |
| 399 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 400 std::string varname(mangle()); | |
| 401 varname.append("__vtblZ"); | |
| 402 const llvm::ArrayType* vtbl_ty = llvm::ArrayType::get(llvm::PointerType::get(llvm::Type::Int8Ty), inits.size()); | |
| 403 vtblVar = new llvm::GlobalVariable(vtbl_ty, true, _linkage, 0, varname, gIR->module); | |
| 404 if (define_vtable) { | |
| 405 //Logger::cout() << "vtbl:::" << '\n' << *vtbl_st << '\n';// << " == | == " << _init << '\n'; | |
| 406 llvm::Constant* _init = llvm::ConstantArray::get(vtbl_ty, inits); | |
| 407 vtblVar->setInitializer(_init); | |
| 408 } | |
| 409 llvmVtbl = vtblVar; | |
| 410 } | |
| 411 | |
| 412 //////////////////////////////////////////////////////////////////////////////// | |
| 413 | |
| 414 // generate initializer | |
| 415 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 416 llvm::Constant* _init = 0; | |
| 417 | |
| 418 // first field is always the vtable | |
| 419 assert(vtblVar != 0); | |
| 420 llvm::Constant* vtbl_init_var = llvm::ConstantExpr::getBitCast(vtblVar, llvm::PointerType::get(llvm::Type::Int8Ty)); | |
| 421 gIR->topstruct().inits[0] = vtbl_init_var; | |
| 422 | |
| 423 //assert(tk == gIR->topstruct().size()); | |
| 424 #ifndef LLVMD_NO_LOGGER | |
| 425 Logger::cout() << *structtype << '\n'; | |
| 426 for (size_t k=0; k<gIR->topstruct().inits.size(); ++k) | |
| 427 Logger::cout() << *gIR->topstruct().inits[k] << '\n'; | |
| 428 #endif | |
| 429 _init = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 430 assert(_init); | |
| 431 std::string initname(mangle()); | |
| 432 initname.append("__initZ"); | |
| 433 Logger::cout() << *_init << '\n'; | |
| 434 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, 0, initname, gIR->module); | |
| 435 ts->llvmInit = initvar; | |
| 436 if (define_vtable) { | |
| 437 initvar->setInitializer(_init); | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 gIR->queueClassMethods.pop_back(); | |
| 442 gIR->classmethods.pop_back(); | |
| 443 gIR->classes.pop_back(); | |
| 444 gIR->structs.pop_back(); | |
| 445 | |
| 446 llvmInProgress = false; | |
| 447 } | |
| 448 | |
| 449 /****************************************** | |
| 450 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 451 * Returns ~0 if not this csym. | |
| 452 */ | |
| 453 | |
| 454 unsigned ClassDeclaration::baseVtblOffset(BaseClass *bc) | |
| 455 { | |
| 456 return ~0; | |
| 457 } | |
| 458 | |
| 459 /* ================================================================== */ | |
| 460 | |
| 461 void VarDeclaration::toObjFile() | |
| 462 { | |
| 463 static int vdi = 0; | |
| 464 Logger::print("VarDeclaration::toObjFile(%d): %s | %s\n", vdi++, toChars(), type->toChars()); | |
| 465 LOG_SCOPE; | |
| 466 llvm::Module* M = gIR->module; | |
| 467 | |
| 468 // handle bind pragma | |
| 469 if (llvmInternal == LLVMbind) { | |
| 470 Logger::println("var is bound: %s", llvmInternal1); | |
| 471 llvmValue = M->getGlobalVariable(llvmInternal1); | |
| 472 assert(llvmValue); | |
| 473 return; | |
| 474 } | |
| 475 | |
| 476 // global variable or magic | |
| 477 if (!parent || parent->isModule()) | |
| 478 { | |
| 479 bool _isconst = isConst(); | |
| 480 if (!_isconst) | |
| 481 _isconst = (storage_class & STCconst) ? true : false; // doesn't seem to work ): | |
| 482 llvm::GlobalValue::LinkageTypes _linkage = LLVM_DtoLinkage(protection, storage_class); | |
| 483 const llvm::Type* _type = LLVM_DtoType(type); | |
| 484 | |
| 485 llvm::Constant* _init = 0; | |
| 486 bool _signed = !type->isunsigned(); | |
| 487 | |
| 488 _init = LLVM_DtoInitializer(type, init); | |
| 489 | |
| 490 assert(_type); | |
| 491 assert(_init); | |
| 492 //Logger::cout() << "initializer: " << *_init << '\n'; | |
| 493 if (_type != _init->getType()) { | |
| 494 Logger::cout() << "got type '" << *_init->getType() << "' expected '" << *_type << "'\n"; | |
| 495 // zero initalizer | |
| 496 if (_init->isNullValue()) | |
| 497 _init = llvm::Constant::getNullValue(_type); | |
| 498 // pointer to global constant (struct.init) | |
| 499 else if (llvm::isa<llvm::GlobalVariable>(_init)) | |
| 500 { | |
| 501 assert(_init->getType()->getContainedType(0) == _type); | |
| 502 llvm::GlobalVariable* gv = llvm::cast<llvm::GlobalVariable>(_init); | |
| 503 assert(type->ty == Tstruct); | |
| 504 TypeStruct* ts = (TypeStruct*)type; | |
| 505 assert(ts->sym->llvmInitZ); | |
| 506 _init = ts->sym->llvmInitZ; | |
| 507 } | |
| 508 // array single value init | |
| 509 else if (llvm::isa<llvm::ArrayType>(_type)) | |
| 510 { | |
| 511 const llvm::ArrayType* at = llvm::cast<llvm::ArrayType>(_type); | |
| 512 assert(_type->getContainedType(0) == _init->getType()); | |
| 513 std::vector<llvm::Constant*> initvals; | |
| 514 initvals.resize(at->getNumElements(), _init); | |
| 515 _init = llvm::ConstantArray::get(at, initvals); | |
| 516 } | |
| 517 else | |
| 518 assert(0); | |
| 519 } | |
| 520 | |
| 521 Logger::println("Creating global variable"); | |
| 522 std::string _name(mangle()); | |
| 523 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(_type,_isconst,_linkage,_init,_name,M); | |
| 524 llvmValue = gvar; | |
| 525 | |
| 526 //if (storage_class & STCprivate) | |
| 527 // gvar->setVisibility(llvm::GlobalValue::ProtectedVisibility); | |
| 528 } | |
| 529 | |
| 530 // inside aggregate declaration. declare a field. | |
| 531 else | |
| 532 { | |
| 533 Logger::println("Aggregate var declaration: '%s' offset=%d", toChars(), offset); | |
| 534 | |
| 535 const llvm::Type* _type = LLVM_DtoType(type); | |
| 536 gIR->topstruct().fields.push_back(_type); | |
| 537 | |
| 538 llvm::Constant* _init = LLVM_DtoInitializer(type, init); | |
| 539 if (_type != _init->getType()) | |
| 540 { | |
| 541 if (llvm::isa<llvm::ArrayType>(_type)) | |
| 542 { | |
| 543 const llvm::ArrayType* arrty = llvm::cast<llvm::ArrayType>(_type); | |
| 544 uint64_t n = arrty->getNumElements(); | |
| 545 std::vector<llvm::Constant*> vals(n,_init); | |
| 546 _init = llvm::ConstantArray::get(arrty, vals); | |
| 547 } | |
| 6 | 548 else if (llvm::isa<llvm::StructType>(_type)) { |
| 549 const llvm::StructType* structty = llvm::cast<llvm::StructType>(_type); | |
| 550 TypeStruct* ts = (TypeStruct*)type; | |
| 551 assert(ts->sym->llvmInitZ); | |
| 552 _init = ts->sym->llvmInitZ; | |
| 553 } | |
| 1 | 554 else |
| 555 assert(0); | |
| 556 } | |
| 557 gIR->topstruct().inits.push_back(_init); | |
| 558 } | |
| 559 | |
| 560 Logger::println("VarDeclaration::toObjFile is done"); | |
| 561 } | |
| 562 | |
| 563 /* ================================================================== */ | |
| 564 | |
| 565 void TypedefDeclaration::toObjFile() | |
| 566 { | |
| 567 static int tdi = 0; | |
| 568 Logger::print("TypedefDeclaration::toObjFile(%d): %s\n", tdi++, toChars()); | |
| 569 LOG_SCOPE; | |
| 570 | |
| 571 // TODO | |
| 572 } | |
| 573 | |
| 574 /* ================================================================== */ | |
| 575 | |
| 576 void EnumDeclaration::toObjFile() | |
| 577 { | |
| 578 warning("Ignoring EnumDeclaration::toObjFile for %s", toChars()); | |
| 579 } | |
| 580 | |
| 581 /* ================================================================== */ | |
| 582 | |
| 583 void FuncDeclaration::toObjFile() | |
| 584 { | |
| 585 if (llvmValue != 0 && llvmDModule == gIR->dmodule) { | |
| 586 return; | |
| 587 } | |
| 588 | |
| 589 // has already been pulled in by a reference to ( | |
| 590 if (!gIR->queueClassMethods.empty() && gIR->queueClassMethods.back()) { | |
| 591 Logger::println("queueing %s", toChars()); | |
| 592 assert(!gIR->classmethods.empty()); | |
| 593 gIR->classmethods.back().push_back(this); | |
| 594 return; // will be generated later when the this parameter has a type | |
| 595 } | |
| 596 | |
| 597 static int fdi = 0; | |
| 598 Logger::print("FuncDeclaration::toObjFile(%d,%s): %s\n", fdi++, needThis()?"this":"static",toChars()); | |
| 599 LOG_SCOPE; | |
| 600 | |
| 601 if (llvmInternal == LLVMintrinsic && fbody) { | |
| 602 error("intrinsics cannot have function bodies"); | |
| 603 fatal(); | |
| 604 } | |
| 605 | |
| 606 TypeFunction* f = (TypeFunction*)type; | |
| 607 assert(f != 0); | |
| 608 | |
| 609 // return value type | |
| 610 const llvm::Type* rettype; | |
| 611 const llvm::Type* actualRettype; | |
| 612 Type* rt = f->next; | |
| 613 bool retinptr = false; | |
| 614 bool usesthis = false; | |
| 615 | |
| 616 if (isMain()) { | |
| 617 rettype = llvm::Type::Int32Ty; | |
| 618 actualRettype = rettype; | |
| 619 gIR->emitMain = true; | |
| 620 } | |
| 621 else if (rt) { | |
| 622 if (rt->ty == Tstruct || rt->ty == Tdelegate || rt->ty == Tarray) { | |
| 623 rettype = llvm::PointerType::get(LLVM_DtoType(rt)); | |
| 624 actualRettype = llvm::Type::VoidTy; | |
| 625 f->llvmRetInPtr = retinptr = true; | |
| 626 } | |
| 627 else { | |
| 628 rettype = LLVM_DtoType(rt); | |
| 629 actualRettype = rettype; | |
| 630 } | |
| 631 } | |
| 632 else { | |
| 633 assert(0); | |
| 634 } | |
| 635 | |
| 636 // parameter types | |
| 637 std::vector<const llvm::Type*> paramvec; | |
| 638 | |
| 639 if (retinptr) { | |
| 640 Logger::print("returning through pointer parameter\n"); | |
| 641 paramvec.push_back(rettype); | |
| 642 } | |
| 643 | |
| 644 if (needThis()) { | |
| 645 if (AggregateDeclaration* ad = isMember()) { | |
| 646 Logger::print("isMember = this is: %s\n", ad->type->toChars()); | |
| 647 const llvm::Type* thisty = LLVM_DtoType(ad->type); | |
| 648 if (llvm::isa<llvm::StructType>(thisty)) | |
| 649 thisty = llvm::PointerType::get(thisty); | |
| 650 paramvec.push_back(thisty); | |
| 651 usesthis = true; | |
| 652 } | |
| 653 else | |
| 654 assert(0); | |
| 655 } | |
| 656 | |
| 657 size_t n = Argument::dim(f->parameters); | |
| 658 for (int i=0; i < n; ++i) { | |
| 659 Argument* arg = Argument::getNth(f->parameters, i); | |
| 660 // ensure scalar | |
| 661 Type* argT = arg->type; | |
| 662 assert(argT); | |
| 663 | |
| 664 if ((arg->storageClass & STCref) || (arg->storageClass & STCout)) { | |
| 665 //assert(arg->vardecl); | |
| 666 //arg->vardecl->refparam = true; | |
| 667 } | |
| 668 else | |
| 669 arg->llvmCopy = true; | |
| 670 | |
| 671 const llvm::Type* at = LLVM_DtoType(argT); | |
| 672 if (llvm::isa<llvm::StructType>(at)) { | |
| 673 Logger::println("struct param"); | |
| 674 paramvec.push_back(llvm::PointerType::get(at)); | |
| 675 } | |
| 676 else if (llvm::isa<llvm::ArrayType>(at)) { | |
| 677 Logger::println("sarray param"); | |
| 678 assert(argT->ty == Tsarray); | |
| 679 //paramvec.push_back(llvm::PointerType::get(at->getContainedType(0))); | |
| 680 paramvec.push_back(llvm::PointerType::get(at)); | |
| 681 } | |
| 682 else { | |
| 683 if (!arg->llvmCopy) { | |
| 684 Logger::println("ref param"); | |
| 685 at = llvm::PointerType::get(at); | |
| 686 } | |
| 687 else { | |
| 688 Logger::println("in param"); | |
| 689 } | |
| 690 paramvec.push_back(at); | |
| 691 } | |
| 692 } | |
| 693 | |
| 694 // construct function | |
| 695 bool isvararg = f->varargs; | |
| 696 llvm::FunctionType* functype = llvm::FunctionType::get(actualRettype, paramvec, isvararg); | |
| 697 | |
| 698 // mangled name | |
| 699 char* mangled_name = (llvmInternal == LLVMintrinsic) ? llvmInternal1 : mangle(); | |
| 700 llvm::Function* func = gIR->module->getFunction(mangled_name); | |
| 701 | |
| 702 // make the function | |
| 703 /*if (func != 0) { | |
| 704 llvmValue = func; | |
| 705 f->llvmType = functype; | |
| 706 return; // already pulled in from a forward declaration | |
| 707 } | |
| 708 else */ | |
| 709 if (func == 0) { | |
| 710 func = new llvm::Function(functype,LLVM_DtoLinkage(protection, storage_class),mangled_name,gIR->module); | |
| 711 } | |
| 712 | |
| 713 if (llvmInternal != LLVMintrinsic) | |
| 714 func->setCallingConv(LLVM_DtoCallingConv(f->linkage)); | |
| 715 | |
| 716 llvmValue = func; | |
| 717 f->llvmType = functype; | |
| 718 | |
| 719 if (isMain()) { | |
| 720 gIR->mainFunc = func; | |
| 721 } | |
| 722 | |
| 723 // name parameters | |
| 724 llvm::Function::arg_iterator iarg = func->arg_begin(); | |
| 725 int k = 0; | |
| 726 int nunnamed = 0; | |
| 727 if (retinptr) { | |
| 728 iarg->setName("retval"); | |
| 729 f->llvmRetArg = iarg; | |
| 730 ++iarg; | |
| 731 } | |
| 732 if (usesthis) { | |
| 733 iarg->setName("this"); | |
| 734 ++iarg; | |
| 735 } | |
| 736 for (; iarg != func->arg_end(); ++iarg) | |
| 737 { | |
| 738 Argument* arg = Argument::getNth(f->parameters, k++); | |
| 739 //arg->llvmValue = iarg; | |
| 740 //printf("identifier: '%s' %p\n", arg->ident->toChars(), arg->ident); | |
| 741 if (arg->ident != 0) { | |
| 742 if (arg->vardecl) { | |
| 743 arg->vardecl->llvmValue = iarg; | |
| 744 } | |
| 745 iarg->setName(arg->ident->toChars()); | |
| 746 } | |
| 747 else { | |
| 748 ++nunnamed; | |
| 749 } | |
| 750 } | |
| 751 | |
| 752 // only members of the current module maybe be defined | |
| 753 if (getModule() == gIR->dmodule) | |
| 754 { | |
| 755 bool allow_fbody = true; | |
| 756 // handle static constructor / destructor | |
| 757 if (isStaticCtorDeclaration() || isStaticDtorDeclaration()) { | |
| 758 const llvm::ArrayType* sctor_type = llvm::ArrayType::get(llvm::PointerType::get(functype),1); | |
| 759 //Logger::cout() << "static ctor type: " << *sctor_type << '\n'; | |
| 760 | |
| 761 llvm::Constant* sctor_func = llvm::cast<llvm::Constant>(llvmValue); | |
| 762 //Logger::cout() << "static ctor func: " << *sctor_func << '\n'; | |
| 763 | |
| 764 llvm::Constant* sctor_init = 0; | |
| 765 if (llvmInternal == LLVMnull) | |
| 766 { | |
| 767 llvm::Constant* sctor_init_null = llvm::Constant::getNullValue(sctor_func->getType()); | |
| 768 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_init_null,1); | |
| 769 allow_fbody = false; | |
| 770 } | |
| 771 else | |
| 772 { | |
| 773 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_func,1); | |
| 774 } | |
| 775 | |
| 776 //Logger::cout() << "static ctor init: " << *sctor_init << '\n'; | |
| 777 | |
| 778 | |
| 779 // output the llvm.global_ctors array | |
| 780 const char* varname = isStaticCtorDeclaration() ? "_d_module_ctor_array" : "_d_module_dtor_array"; | |
| 781 llvm::GlobalVariable* sctor_arr = new llvm::GlobalVariable(sctor_type, false, llvm::GlobalValue::AppendingLinkage, sctor_init, varname, gIR->module); | |
| 782 } | |
| 783 | |
| 784 // function definition | |
| 785 if (allow_fbody && fbody != 0) | |
| 786 { | |
| 787 assert(nunnamed == 0); | |
| 788 gIR->funcs.push(func); | |
| 789 gIR->functypes.push(f); | |
| 790 | |
| 791 IRScope irs; | |
| 792 irs.begin = new llvm::BasicBlock("entry",func); | |
| 793 irs.end = new llvm::BasicBlock("endentry",func); | |
| 794 | |
| 795 //assert(gIR->scopes.empty()); | |
| 796 gIR->scopes.push_back(irs); | |
| 797 | |
| 798 // create alloca point | |
| 799 f->llvmAllocaPoint = new llvm::BitCastInst(llvm::ConstantInt::get(llvm::Type::Int32Ty,0,false),llvm::Type::Int32Ty,"alloca point",gIR->scopebb()); | |
| 800 | |
| 801 // output function body | |
| 802 fbody->toIR(gIR); | |
| 803 | |
| 804 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 805 // in automatically, so we do it here. | |
| 806 if (!isMain() && (gIR->scopebb()->empty() || !llvm::isa<llvm::TerminatorInst>(gIR->scopebb()->back()))) { | |
| 807 // pass the previous block into this block | |
| 808 //new llvm::BranchInst(irs.end, irs.begin); | |
| 809 new llvm::ReturnInst(gIR->scopebb()); | |
| 810 } | |
| 811 | |
| 812 // erase alloca point | |
| 813 f->llvmAllocaPoint->eraseFromParent(); | |
| 814 f->llvmAllocaPoint = 0; | |
| 815 | |
| 816 gIR->scopes.pop_back(); | |
| 817 //assert(gIR->scopes.empty()); | |
| 818 | |
| 819 gIR->functypes.pop(); | |
| 820 gIR->funcs.pop(); | |
| 821 | |
| 822 // get rid of the endentry block, it's never used | |
| 823 func->getBasicBlockList().pop_back(); | |
| 824 | |
| 825 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 826 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); | |
| 827 if (lastbb->empty()) { | |
| 828 new llvm::UnreachableInst(lastbb); | |
| 829 } | |
| 830 } | |
| 831 } | |
| 832 else | |
| 833 { | |
| 834 Logger::println("only declaration"); | |
| 835 } | |
| 836 | |
| 837 llvmDModule = gIR->dmodule; | |
| 838 | |
| 839 Logger::println("FuncDeclaration done\n"); | |
| 840 } |