Mercurial > projects > ldc
annotate gen/toobj.c @ 38:27b2f40bdb58 trunk
[svn r42] Disabled the extensive logging by default. Use the -vv flag to get it back.
Fiddled a bit the the testing system.
Added a very simple SDL graphics demo.
| author | lindquist |
|---|---|
| date | Wed, 10 Oct 2007 06:16:48 +0200 |
| parents | 2841234d2aea |
| children | 8b0e809563df |
| 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" | |
| 18 | 37 #include "scope.h" |
| 1 | 38 |
|
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39 #include "gen/irstate.h" |
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40 #include "gen/elem.h" |
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41 #include "gen/logger.h" |
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42 #include "gen/tollvm.h" |
| 1 | 43 |
| 44 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 45 | |
| 46 void | |
| 47 Module::genobjfile() | |
| 48 { | |
| 49 Logger::cout() << "Generating module: " << (md ? md->toChars() : toChars()) << '\n'; | |
| 50 LOG_SCOPE; | |
| 51 | |
| 6 | 52 // start by deleting the old object file |
| 1 | 53 deleteObjFile(); |
| 54 | |
| 18 | 55 // create a new ir state |
| 1 | 56 IRState ir; |
| 57 gIR = &ir; | |
| 58 ir.dmodule = this; | |
| 59 | |
| 6 | 60 // name the module |
| 1 | 61 std::string mname(toChars()); |
| 62 if (md != 0) | |
| 63 mname = md->toChars(); | |
| 64 ir.module = new llvm::Module(mname); | |
| 65 | |
| 6 | 66 // set target stuff |
| 1 | 67 std::string target_triple(global.params.tt_arch); |
| 68 target_triple.append(global.params.tt_os); | |
| 69 ir.module->setTargetTriple(target_triple); | |
| 70 ir.module->setDataLayout(global.params.data_layout); | |
| 71 | |
| 72 gTargetData = new llvm::TargetData(ir.module); | |
| 73 | |
| 6 | 74 // process module members |
| 1 | 75 for (int k=0; k < members->dim; k++) { |
| 76 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 77 assert(dsym); | |
| 78 dsym->toObjFile(); | |
| 79 } | |
| 80 | |
| 81 delete gTargetData; | |
| 82 gTargetData = 0; | |
| 83 | |
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84 // emit the llvm main function if necessary |
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85 if (ir.emitMain) { |
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86 LLVM_DtoMain(); |
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87 } |
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88 |
| 6 | 89 // verify the llvm |
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90 if (!global.params.novalidate) { |
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91 std::string verifyErr; |
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92 Logger::println("Verifying module..."); |
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93 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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94 { |
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95 error("%s", verifyErr.c_str()); |
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96 fatal(); |
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97 } |
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98 else { |
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99 Logger::println("Verification passed!"); |
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100 } |
| 1 | 101 } |
| 102 | |
| 103 // run passes | |
| 104 // TODO | |
| 105 | |
| 106 /*if (global.params.llvmLL) { | |
| 107 //assert(0); | |
| 108 std::ofstream os(llfile->name->toChars()); | |
| 109 //llvm::WriteAssemblyToFile(ir.module, os); | |
| 110 ir.module->print(os); | |
| 111 }*/ | |
| 112 | |
| 6 | 113 // write bytecode |
| 1 | 114 //if (global.params.llvmBC) { |
| 115 Logger::println("Writing LLVM bitcode\n"); | |
| 116 std::ofstream os(bcfile->name->toChars(), std::ios::binary); | |
| 117 llvm::WriteBitcodeToFile(ir.module, os); | |
| 118 //} | |
| 119 | |
| 120 delete ir.module; | |
| 121 gIR = NULL; | |
| 122 } | |
| 123 | |
| 124 /* ================================================================== */ | |
| 125 | |
| 126 // Put out instance of ModuleInfo for this Module | |
| 127 | |
| 128 void Module::genmoduleinfo() | |
| 129 { | |
| 130 } | |
| 131 | |
| 132 /* ================================================================== */ | |
| 133 | |
| 134 void Dsymbol::toObjFile() | |
| 135 { | |
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136 Logger::println("Ignoring Dsymbol::toObjFile for %s", toChars()); |
| 1 | 137 } |
| 138 | |
| 139 /* ================================================================== */ | |
| 140 | |
| 141 void Declaration::toObjFile() | |
| 142 { | |
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143 Logger::println("Ignoring Declaration::toObjFile for %s", toChars()); |
| 1 | 144 } |
| 145 | |
| 146 /* ================================================================== */ | |
| 147 | |
| 6 | 148 /// Returns the LLVM style index from a DMD style offset |
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149 void AggregateDeclaration::offsetToIndex(Type* t, unsigned os, std::vector<unsigned>& result) |
| 1 | 150 { |
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151 Logger::println("checking for offset %u type %s:", os, t->toChars()); |
| 23 | 152 LOG_SCOPE; |
| 1 | 153 for (unsigned i=0; i<fields.dim; ++i) { |
| 154 VarDeclaration* vd = (VarDeclaration*)fields.data[i]; | |
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155 Logger::println("found %u type %s", vd->offset, vd->type->toChars()); |
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156 if (os == vd->offset && vd->type == t) { |
| 23 | 157 result.push_back(i); |
| 158 return; | |
| 159 } | |
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160 else if (vd->type->ty == Tstruct && (vd->offset + vd->type->size()) > os) { |
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161 TypeStruct* ts = (TypeStruct*)vd->type; |
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162 StructDeclaration* sd = ts->sym; |
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163 result.push_back(i); |
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164 sd->offsetToIndex(t, os - vd->offset, result); |
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165 return; |
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166 } |
| 1 | 167 } |
| 168 assert(0 && "Offset not found in any aggregate field"); | |
| 169 } | |
| 170 | |
| 171 /* ================================================================== */ | |
| 172 | |
| 173 static unsigned LLVM_ClassOffsetToIndex(ClassDeclaration* cd, unsigned os, unsigned& idx) | |
| 174 { | |
| 175 // start at the bottom of the inheritance chain | |
| 176 if (cd->baseClass != 0) { | |
| 177 unsigned o = LLVM_ClassOffsetToIndex(cd->baseClass, os, idx); | |
| 178 if (o != (unsigned)-1) | |
| 179 return o; | |
| 180 } | |
| 181 | |
| 182 // check this class | |
| 183 unsigned i; | |
| 184 for (i=0; i<cd->fields.dim; ++i) { | |
| 185 VarDeclaration* vd = (VarDeclaration*)cd->fields.data[i]; | |
| 186 if (os == vd->offset) | |
| 187 return i+idx; | |
| 188 } | |
| 189 idx += i; | |
| 190 | |
| 191 return (unsigned)-1; | |
| 192 } | |
| 193 | |
| 6 | 194 /// Returns the LLVM style index from a DMD style offset |
| 195 /// Handles class inheritance | |
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196 void ClassDeclaration::offsetToIndex(Type* t, unsigned os, std::vector<unsigned>& result) |
| 1 | 197 { |
| 198 unsigned idx = 0; | |
| 199 unsigned r = LLVM_ClassOffsetToIndex(this, os, idx); | |
| 200 assert(r != (unsigned)-1 && "Offset not found in any aggregate field"); | |
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201 result.push_back(r+1); // vtable is 0 |
| 1 | 202 } |
| 203 | |
| 204 /* ================================================================== */ | |
| 205 | |
| 206 void InterfaceDeclaration::toObjFile() | |
| 207 { | |
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208 Logger::println("Ignoring InterfaceDeclaration::toObjFile for %s", toChars()); |
| 1 | 209 } |
| 210 | |
| 211 /* ================================================================== */ | |
| 212 | |
| 213 void StructDeclaration::toObjFile() | |
| 214 { | |
| 215 TypeStruct* ts = (TypeStruct*)type; | |
| 216 if (llvmType != 0) | |
| 217 return; | |
| 218 | |
| 219 static int sdi = 0; | |
| 220 Logger::print("StructDeclaration::toObjFile(%d): %s\n", sdi++, toChars()); | |
| 221 LOG_SCOPE; | |
| 222 | |
| 223 gIR->structs.push_back(IRStruct(ts)); | |
| 224 | |
| 225 for (int k=0; k < members->dim; k++) { | |
| 226 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
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227 dsym->toObjFile(); |
| 1 | 228 } |
| 229 | |
| 23 | 230 if (gIR->topstruct().fields.empty()) |
| 231 { | |
| 232 gIR->topstruct().fields.push_back(llvm::Type::Int8Ty); | |
| 233 gIR->topstruct().inits.push_back(llvm::ConstantInt::get(llvm::Type::Int8Ty, 0, false)); | |
| 234 } | |
| 235 | |
| 1 | 236 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); |
| 237 | |
| 238 // refine abstract types for stuff like: struct S{S* next;} | |
| 239 if (gIR->topstruct().recty != 0) | |
| 240 { | |
| 241 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 242 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 243 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 244 } | |
| 245 | |
| 246 ts->llvmType = structtype; | |
| 247 llvmType = structtype; | |
| 248 | |
| 249 if (parent->isModule()) { | |
| 250 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 251 } | |
| 252 | |
| 253 // generate static data | |
| 254 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 255 llvm::Constant* _init = 0; | |
| 256 | |
| 257 // always generate the constant initalizer | |
| 258 if (!zeroInit) { | |
| 259 Logger::println("Not zero initialized"); | |
| 260 //assert(tk == gIR->topstruct().size()); | |
| 261 #ifndef LLVMD_NO_LOGGER | |
| 262 Logger::cout() << *structtype << '\n'; | |
| 263 for (size_t k=0; k<gIR->topstruct().inits.size(); ++k) { | |
| 264 Logger::cout() << "Type:" << '\n'; | |
| 265 Logger::cout() << *gIR->topstruct().inits[k]->getType() << '\n'; | |
| 266 Logger::cout() << "Value:" << '\n'; | |
| 267 Logger::cout() << *gIR->topstruct().inits[k] << '\n'; | |
| 268 } | |
| 269 Logger::cout() << "Initializer printed" << '\n'; | |
| 270 #endif | |
| 271 llvmInitZ = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 272 } | |
| 273 else { | |
| 274 Logger::println("Zero initialized"); | |
| 275 llvmInitZ = llvm::ConstantAggregateZero::get(structtype); | |
| 276 } | |
| 277 | |
| 278 // only provide the constant initializer for the defining module | |
| 279 if (getModule() == gIR->dmodule) | |
| 280 { | |
| 281 _init = llvmInitZ; | |
| 282 } | |
| 283 | |
| 284 std::string initname(mangle()); | |
| 285 initname.append("__initZ"); | |
| 286 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, _init, initname, gIR->module); | |
| 287 ts->llvmInit = initvar; | |
| 288 | |
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289 // generate member function definitions |
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290 gIR->topstruct().queueFuncs = false; |
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291 IRState::FuncDeclVec& mfs = gIR->topstruct().funcs; |
| 1 | 292 size_t n = mfs.size(); |
| 293 for (size_t i=0; i<n; ++i) { | |
| 294 mfs[i]->toObjFile(); | |
| 295 } | |
| 296 | |
| 297 llvmDModule = gIR->dmodule; | |
| 298 | |
| 299 gIR->structs.pop_back(); | |
| 300 | |
| 301 // generate typeinfo | |
| 302 type->getTypeInfo(NULL); // generate TypeInfo | |
| 303 } | |
| 304 | |
| 305 /* ================================================================== */ | |
| 306 | |
| 307 static void LLVM_AddBaseClassData(BaseClasses* bcs) | |
| 308 { | |
| 309 // add base class data members first | |
| 310 for (int j=0; j<bcs->dim; j++) | |
| 311 { | |
| 312 BaseClass* bc = (BaseClass*)(bcs->data[j]); | |
| 313 assert(bc); | |
| 314 LLVM_AddBaseClassData(&bc->base->baseclasses); | |
| 315 for (int k=0; k < bc->base->members->dim; k++) { | |
| 316 Dsymbol* dsym = (Dsymbol*)(bc->base->members->data[k]); | |
| 317 if (dsym->isVarDeclaration()) | |
| 318 { | |
| 319 dsym->toObjFile(); | |
| 320 } | |
| 321 } | |
| 322 } | |
| 323 } | |
| 324 | |
| 325 void ClassDeclaration::toObjFile() | |
| 326 { | |
| 327 TypeClass* ts = (TypeClass*)type; | |
| 328 if (ts->llvmType != 0 || llvmInProgress) | |
| 329 return; | |
| 330 | |
| 331 llvmInProgress = true; | |
| 332 | |
| 333 static int fdi = 0; | |
| 334 Logger::print("ClassDeclaration::toObjFile(%d): %s\n", fdi++, toChars()); | |
| 335 LOG_SCOPE; | |
| 336 | |
| 6 | 337 gIR->structs.push_back(IRStruct(ts)); |
| 1 | 338 gIR->classes.push_back(this); |
| 339 | |
| 340 // add vtable | |
| 9 | 341 llvm::PATypeHolder pa = llvm::OpaqueType::get(); |
| 342 const llvm::Type* vtabty = llvm::PointerType::get(pa); | |
| 1 | 343 gIR->topstruct().fields.push_back(vtabty); |
| 344 gIR->topstruct().inits.push_back(0); | |
| 345 | |
| 346 // base classes first | |
| 347 LLVM_AddBaseClassData(&baseclasses); | |
| 348 | |
| 349 // then add own members | |
| 350 for (int k=0; k < members->dim; k++) { | |
| 351 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 352 dsym->toObjFile(); | |
| 353 } | |
| 354 | |
| 355 llvm::StructType* structtype = llvm::StructType::get(gIR->topstruct().fields); | |
| 6 | 356 // refine abstract types for stuff like: class C {C next;} |
| 357 if (gIR->topstruct().recty != 0) | |
| 358 { | |
| 359 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 360 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 361 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 362 } | |
| 363 | |
| 1 | 364 ts->llvmType = structtype; |
| 365 llvmType = structtype; | |
| 366 | |
| 367 bool define_vtable = false; | |
| 368 if (parent->isModule()) { | |
| 369 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 370 define_vtable = (getModule() == gIR->dmodule); | |
| 371 } | |
| 372 else { | |
| 373 assert(0 && "class parent is not a module"); | |
| 374 } | |
| 375 | |
| 9 | 376 // generate vtable |
| 377 llvm::GlobalVariable* svtblVar = 0; | |
| 378 std::vector<llvm::Constant*> sinits; | |
| 379 std::vector<const llvm::Type*> sinits_ty; | |
| 380 sinits.reserve(vtbl.dim); | |
| 381 sinits_ty.reserve(vtbl.dim); | |
| 382 | |
| 383 for (int k=0; k < vtbl.dim; k++) | |
| 384 { | |
| 385 Dsymbol* dsym = (Dsymbol*)vtbl.data[k]; | |
| 386 assert(dsym); | |
| 387 //Logger::cout() << "vtblsym: " << dsym->toChars() << '\n'; | |
| 388 | |
| 389 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 390 fd->toObjFile(); | |
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391 assert(fd->llvmValue); |
| 9 | 392 llvm::Constant* c = llvm::cast<llvm::Constant>(fd->llvmValue); |
| 393 sinits.push_back(c); | |
| 394 sinits_ty.push_back(c->getType()); | |
| 395 } | |
| 396 else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { | |
| 397 const llvm::Type* cty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 398 llvm::Constant* c = llvm::Constant::getNullValue(cty); | |
| 399 sinits.push_back(c); | |
| 400 sinits_ty.push_back(cty); | |
| 401 } | |
| 402 else | |
| 403 assert(0); | |
| 404 } | |
| 405 | |
| 406 const llvm::StructType* svtbl_ty = 0; | |
| 407 if (!sinits.empty()) | |
| 408 { | |
| 409 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 410 | |
| 411 std::string varname(mangle()); | |
| 412 varname.append("__vtblZ"); | |
| 413 std::string styname(mangle()); | |
| 414 styname.append("__vtblTy"); | |
| 415 | |
| 416 svtbl_ty = llvm::StructType::get(sinits_ty); | |
| 417 gIR->module->addTypeName(styname, svtbl_ty); | |
| 418 svtblVar = new llvm::GlobalVariable(svtbl_ty, true, _linkage, 0, varname, gIR->module); | |
| 419 | |
| 420 if (define_vtable) { | |
| 421 svtblVar->setInitializer(llvm::ConstantStruct::get(svtbl_ty, sinits)); | |
| 422 } | |
| 423 llvmVtbl = svtblVar; | |
| 424 } | |
| 425 | |
| 426 //////////////////////////////////////////////////////////////////////////////// | |
| 427 | |
| 428 // refine for final vtable type | |
| 429 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(svtbl_ty); | |
| 430 svtbl_ty = llvm::cast<llvm::StructType>(pa.get()); | |
| 431 structtype = llvm::cast<llvm::StructType>(gIR->topstruct().recty.get()); | |
| 432 ts->llvmType = structtype; | |
| 433 llvmType = structtype; | |
| 434 | |
| 435 // generate initializer | |
| 436 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 437 llvm::Constant* _init = 0; | |
| 438 | |
| 439 // first field is always the vtable | |
| 440 assert(svtblVar != 0); | |
| 441 gIR->topstruct().inits[0] = svtblVar; | |
| 442 | |
| 443 _init = llvm::ConstantStruct::get(structtype,gIR->topstruct().inits); | |
| 444 assert(_init); | |
| 445 std::string initname(mangle()); | |
| 446 initname.append("__initZ"); | |
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447 //Logger::cout() << *_init << '\n'; |
| 9 | 448 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, 0, initname, gIR->module); |
| 449 ts->llvmInit = initvar; | |
| 450 if (define_vtable) { | |
| 451 initvar->setInitializer(_init); | |
| 452 } | |
| 453 | |
| 454 // generate member function definitions | |
|
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455 gIR->topstruct().queueFuncs = false; |
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456 IRState::FuncDeclVec& mfs = gIR->topstruct().funcs; |
| 1 | 457 size_t n = mfs.size(); |
| 458 for (size_t i=0; i<n; ++i) { | |
| 459 mfs[i]->toObjFile(); | |
| 460 } | |
| 461 | |
| 462 gIR->classes.pop_back(); | |
| 463 gIR->structs.pop_back(); | |
| 464 | |
| 465 llvmInProgress = false; | |
| 466 } | |
| 467 | |
| 468 /****************************************** | |
| 469 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 470 * Returns ~0 if not this csym. | |
| 471 */ | |
| 472 | |
| 473 unsigned ClassDeclaration::baseVtblOffset(BaseClass *bc) | |
| 474 { | |
| 475 return ~0; | |
| 476 } | |
| 477 | |
| 478 /* ================================================================== */ | |
| 479 | |
| 480 void VarDeclaration::toObjFile() | |
| 481 { | |
| 482 static int vdi = 0; | |
| 483 Logger::print("VarDeclaration::toObjFile(%d): %s | %s\n", vdi++, toChars(), type->toChars()); | |
| 484 LOG_SCOPE; | |
| 485 llvm::Module* M = gIR->module; | |
| 486 | |
| 487 // handle bind pragma | |
| 488 if (llvmInternal == LLVMbind) { | |
| 489 Logger::println("var is bound: %s", llvmInternal1); | |
| 490 llvmValue = M->getGlobalVariable(llvmInternal1); | |
| 491 assert(llvmValue); | |
| 492 return; | |
| 493 } | |
| 494 | |
| 495 // global variable or magic | |
|
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496 if (isDataseg()) |
| 1 | 497 { |
| 498 bool _isconst = isConst(); | |
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499 |
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500 llvm::GlobalValue::LinkageTypes _linkage; |
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501 if (parent->isFuncDeclaration()) |
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502 _linkage = llvm::GlobalValue::InternalLinkage; |
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503 else |
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504 _linkage = LLVM_DtoLinkage(protection, storage_class); |
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505 |
| 1 | 506 const llvm::Type* _type = LLVM_DtoType(type); |
|
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507 assert(_type); |
| 1 | 508 |
| 509 llvm::Constant* _init = 0; | |
| 510 bool _signed = !type->isunsigned(); | |
| 511 | |
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512 Logger::println("Creating global variable"); |
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513 std::string _name(mangle()); |
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514 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(_type,_isconst,_linkage,0,_name,M); |
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515 llvmValue = gvar; |
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516 gIR->lvals.push_back(gvar); |
| 1 | 517 |
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518 _init = LLVM_DtoInitializer(type, init); |
| 1 | 519 assert(_init); |
|
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520 |
| 1 | 521 //Logger::cout() << "initializer: " << *_init << '\n'; |
| 522 if (_type != _init->getType()) { | |
| 523 Logger::cout() << "got type '" << *_init->getType() << "' expected '" << *_type << "'\n"; | |
| 524 // zero initalizer | |
| 525 if (_init->isNullValue()) | |
| 526 _init = llvm::Constant::getNullValue(_type); | |
| 527 // pointer to global constant (struct.init) | |
| 528 else if (llvm::isa<llvm::GlobalVariable>(_init)) | |
| 529 { | |
| 530 assert(_init->getType()->getContainedType(0) == _type); | |
| 531 llvm::GlobalVariable* gv = llvm::cast<llvm::GlobalVariable>(_init); | |
| 532 assert(type->ty == Tstruct); | |
| 533 TypeStruct* ts = (TypeStruct*)type; | |
| 534 assert(ts->sym->llvmInitZ); | |
| 535 _init = ts->sym->llvmInitZ; | |
| 536 } | |
| 537 // array single value init | |
| 538 else if (llvm::isa<llvm::ArrayType>(_type)) | |
| 539 { | |
| 540 const llvm::ArrayType* at = llvm::cast<llvm::ArrayType>(_type); | |
| 541 assert(_type->getContainedType(0) == _init->getType()); | |
| 542 std::vector<llvm::Constant*> initvals; | |
| 543 initvals.resize(at->getNumElements(), _init); | |
| 544 _init = llvm::ConstantArray::get(at, initvals); | |
| 545 } | |
|
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546 else { |
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547 Logger::cout() << "Unexpected initializer type: " << *_type << '\n'; |
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548 //assert(0); |
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549 } |
| 1 | 550 } |
| 551 | |
|
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552 gIR->lvals.pop_back(); |
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553 |
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554 gvar->setInitializer(_init); |
| 1 | 555 |
| 556 //if (storage_class & STCprivate) | |
| 557 // gvar->setVisibility(llvm::GlobalValue::ProtectedVisibility); | |
| 558 } | |
| 559 | |
| 560 // inside aggregate declaration. declare a field. | |
| 561 else | |
| 562 { | |
| 563 Logger::println("Aggregate var declaration: '%s' offset=%d", toChars(), offset); | |
| 564 | |
| 565 const llvm::Type* _type = LLVM_DtoType(type); | |
| 566 gIR->topstruct().fields.push_back(_type); | |
| 567 | |
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568 llvm::Constant*_init = LLVM_DtoInitializer(type, init); |
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569 assert(_init); |
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570 Logger::cout() << "field init is: " << *_init << " type should be " << *_type << '\n'; |
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571 if (!_init || _type != _init->getType()) |
| 1 | 572 { |
|
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573 if (type->ty == Tsarray) |
| 1 | 574 { |
| 575 const llvm::ArrayType* arrty = llvm::cast<llvm::ArrayType>(_type); | |
| 576 uint64_t n = arrty->getNumElements(); | |
| 577 std::vector<llvm::Constant*> vals(n,_init); | |
| 578 _init = llvm::ConstantArray::get(arrty, vals); | |
| 579 } | |
|
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580 else if (type->ty == Tarray) |
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581 { |
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582 assert(llvm::isa<llvm::StructType>(_type)); |
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583 _init = llvm::ConstantAggregateZero::get(_type); |
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584 } |
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585 else if (type->ty == Tstruct) |
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586 { |
| 6 | 587 const llvm::StructType* structty = llvm::cast<llvm::StructType>(_type); |
| 588 TypeStruct* ts = (TypeStruct*)type; | |
| 9 | 589 assert(ts); |
| 590 assert(ts->sym); | |
| 6 | 591 assert(ts->sym->llvmInitZ); |
| 592 _init = ts->sym->llvmInitZ; | |
| 593 } | |
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594 else if (type->ty == Tclass) |
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595 { |
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596 _init = llvm::Constant::getNullValue(_type); |
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597 } |
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598 else { |
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599 Logger::println("failed for type %s", type->toChars()); |
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600 assert(0); |
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601 } |
| 1 | 602 } |
| 603 gIR->topstruct().inits.push_back(_init); | |
| 604 } | |
| 605 | |
| 606 Logger::println("VarDeclaration::toObjFile is done"); | |
| 607 } | |
| 608 | |
| 609 /* ================================================================== */ | |
| 610 | |
| 611 void TypedefDeclaration::toObjFile() | |
| 612 { | |
| 613 static int tdi = 0; | |
| 614 Logger::print("TypedefDeclaration::toObjFile(%d): %s\n", tdi++, toChars()); | |
| 615 LOG_SCOPE; | |
| 616 | |
| 617 // TODO | |
| 618 } | |
| 619 | |
| 620 /* ================================================================== */ | |
| 621 | |
| 622 void EnumDeclaration::toObjFile() | |
| 623 { | |
|
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624 Logger::println("Ignoring EnumDeclaration::toObjFile for %s", toChars()); |
| 1 | 625 } |
| 626 | |
| 627 /* ================================================================== */ | |
| 628 | |
| 629 void FuncDeclaration::toObjFile() | |
| 630 { | |
| 18 | 631 if (llvmDModule) { |
| 9 | 632 assert(llvmValue != 0); |
| 1 | 633 return; |
| 634 } | |
| 635 | |
| 9 | 636 llvm::Function* func = LLVM_DtoDeclareFunction(this); |
| 637 | |
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638 if (!gIR->structs.empty() && gIR->topstruct().queueFuncs) { |
|
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639 if (!llvmQueued) { |
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640 Logger::println("queueing %s", toChars()); |
|
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641 gIR->topstruct().funcs.push_back(this); |
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642 llvmQueued = true; |
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643 } |
| 10 | 644 return; // we wait with the definition as they might invoke a virtual method and the vtable is not yet complete |
| 1 | 645 } |
| 646 | |
| 647 TypeFunction* f = (TypeFunction*)type; | |
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648 assert(f->llvmType); |
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649 const llvm::FunctionType* functype = llvm::cast<llvm::FunctionType>(llvmValue->getType()->getContainedType(0)); |
| 1 | 650 |
| 651 // only members of the current module maybe be defined | |
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652 if (getModule() == gIR->dmodule || parent->isTemplateInstance()) |
| 1 | 653 { |
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654 llvmDModule = gIR->dmodule; |
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655 |
| 1 | 656 bool allow_fbody = true; |
| 657 // handle static constructor / destructor | |
| 658 if (isStaticCtorDeclaration() || isStaticDtorDeclaration()) { | |
| 659 const llvm::ArrayType* sctor_type = llvm::ArrayType::get(llvm::PointerType::get(functype),1); | |
| 660 //Logger::cout() << "static ctor type: " << *sctor_type << '\n'; | |
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661 |
| 1 | 662 llvm::Constant* sctor_func = llvm::cast<llvm::Constant>(llvmValue); |
| 663 //Logger::cout() << "static ctor func: " << *sctor_func << '\n'; | |
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664 |
| 1 | 665 llvm::Constant* sctor_init = 0; |
| 666 if (llvmInternal == LLVMnull) | |
| 667 { | |
| 668 llvm::Constant* sctor_init_null = llvm::Constant::getNullValue(sctor_func->getType()); | |
| 669 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_init_null,1); | |
| 670 allow_fbody = false; | |
| 671 } | |
| 672 else | |
| 673 { | |
| 674 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_func,1); | |
| 675 } | |
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676 |
| 1 | 677 //Logger::cout() << "static ctor init: " << *sctor_init << '\n'; |
|
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678 |
| 1 | 679 // output the llvm.global_ctors array |
| 680 const char* varname = isStaticCtorDeclaration() ? "_d_module_ctor_array" : "_d_module_dtor_array"; | |
| 681 llvm::GlobalVariable* sctor_arr = new llvm::GlobalVariable(sctor_type, false, llvm::GlobalValue::AppendingLinkage, sctor_init, varname, gIR->module); | |
| 682 } | |
| 683 | |
| 684 // function definition | |
| 685 if (allow_fbody && fbody != 0) | |
| 686 { | |
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687 gIR->funcdecls.push_back(this); |
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688 |
|
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689 // first make absolutely sure the type is up to date |
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690 f->llvmType = llvmValue->getType()->getContainedType(0); |
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691 |
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692 Logger::cout() << "func type: " << *f->llvmType << '\n'; |
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693 |
|
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694 // this handling |
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695 if (f->llvmUsesThis) { |
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696 if (f->llvmRetInPtr) |
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697 llvmThisVar = ++func->arg_begin(); |
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698 else |
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699 llvmThisVar = func->arg_begin(); |
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700 assert(llvmThisVar != 0); |
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701 } |
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702 |
| 9 | 703 if (isMain()) |
| 704 gIR->emitMain = true; | |
| 705 | |
| 1 | 706 gIR->funcs.push(func); |
| 707 gIR->functypes.push(f); | |
| 708 | |
| 709 IRScope irs; | |
| 710 irs.begin = new llvm::BasicBlock("entry",func); | |
| 711 irs.end = new llvm::BasicBlock("endentry",func); | |
| 712 | |
| 713 //assert(gIR->scopes.empty()); | |
| 714 gIR->scopes.push_back(irs); | |
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715 |
| 1 | 716 // create alloca point |
| 717 f->llvmAllocaPoint = new llvm::BitCastInst(llvm::ConstantInt::get(llvm::Type::Int32Ty,0,false),llvm::Type::Int32Ty,"alloca point",gIR->scopebb()); | |
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718 |
| 1 | 719 // output function body |
| 720 fbody->toIR(gIR); | |
| 721 | |
| 722 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 723 // in automatically, so we do it here. | |
| 724 if (!isMain() && (gIR->scopebb()->empty() || !llvm::isa<llvm::TerminatorInst>(gIR->scopebb()->back()))) { | |
| 725 // pass the previous block into this block | |
| 726 //new llvm::BranchInst(irs.end, irs.begin); | |
| 727 new llvm::ReturnInst(gIR->scopebb()); | |
| 728 } | |
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729 |
| 1 | 730 // erase alloca point |
| 731 f->llvmAllocaPoint->eraseFromParent(); | |
| 732 f->llvmAllocaPoint = 0; | |
| 733 | |
| 734 gIR->scopes.pop_back(); | |
| 735 //assert(gIR->scopes.empty()); | |
| 736 | |
| 737 gIR->functypes.pop(); | |
| 738 gIR->funcs.pop(); | |
| 739 | |
| 740 // get rid of the endentry block, it's never used | |
| 9 | 741 assert(!func->getBasicBlockList().empty()); |
| 1 | 742 func->getBasicBlockList().pop_back(); |
| 743 | |
| 744 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 9 | 745 // would be nice to figure out how to assert that this is correct |
| 1 | 746 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); |
| 747 if (lastbb->empty()) { | |
| 9 | 748 // possibly assert(lastbb->getNumPredecessors() == 0); ??? try it out sometime ... |
| 1 | 749 new llvm::UnreachableInst(lastbb); |
| 750 } | |
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751 |
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752 gIR->funcdecls.pop_back(); |
| 1 | 753 } |
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754 |
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755 // template instances should have weak linkage |
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756 if (parent->isTemplateInstance()) { |
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757 func->setLinkage(llvm::GlobalValue::WeakLinkage); |
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758 } |
| 1 | 759 } |
| 760 } |