Mercurial > projects > ldc
annotate gen/toobj.c @ 73:b706170e24a9 trunk
[svn r77] Fixed foreach on slice.
Fixed some nested function problems when accessing outer function parameters.
Major changes to handling of structs.
Initial support for unions.
Probably more...
| author | lindquist |
|---|---|
| date | Wed, 31 Oct 2007 03:11:32 +0100 |
| parents | d7e764e62462 |
| children | eb379601d445 |
| 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 | |
| 40 | 14 #include "gen/llvm.h" |
| 1 | 15 #include "llvm/Analysis/Verifier.h" |
| 16 #include "llvm/Bitcode/ReaderWriter.h" | |
| 17 #include "llvm/Target/TargetMachine.h" | |
| 18 #include "llvm/Target/TargetMachineRegistry.h" | |
| 19 | |
| 20 #include "mars.h" | |
| 21 #include "module.h" | |
| 22 #include "mtype.h" | |
| 23 #include "declaration.h" | |
| 24 #include "statement.h" | |
| 25 #include "enum.h" | |
| 26 #include "aggregate.h" | |
| 27 #include "init.h" | |
| 28 #include "attrib.h" | |
| 29 #include "id.h" | |
| 30 #include "import.h" | |
| 31 #include "template.h" | |
| 18 | 32 #include "scope.h" |
| 1 | 33 |
|
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34 #include "gen/irstate.h" |
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35 #include "gen/elem.h" |
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36 #include "gen/logger.h" |
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37 #include "gen/tollvm.h" |
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38 #include "gen/arrays.h" |
| 1 | 39 |
| 40 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 41 | |
| 42 void | |
| 43 Module::genobjfile() | |
| 44 { | |
| 45 Logger::cout() << "Generating module: " << (md ? md->toChars() : toChars()) << '\n'; | |
| 46 LOG_SCOPE; | |
| 47 | |
| 6 | 48 // start by deleting the old object file |
| 1 | 49 deleteObjFile(); |
| 50 | |
| 18 | 51 // create a new ir state |
| 1 | 52 IRState ir; |
| 53 gIR = &ir; | |
| 54 ir.dmodule = this; | |
| 55 | |
| 6 | 56 // name the module |
| 1 | 57 std::string mname(toChars()); |
| 58 if (md != 0) | |
| 59 mname = md->toChars(); | |
| 60 ir.module = new llvm::Module(mname); | |
| 61 | |
| 6 | 62 // set target stuff |
| 1 | 63 std::string target_triple(global.params.tt_arch); |
| 64 target_triple.append(global.params.tt_os); | |
| 65 ir.module->setTargetTriple(target_triple); | |
| 66 ir.module->setDataLayout(global.params.data_layout); | |
| 67 | |
| 73 | 68 // heavily inspired by tools/llc/llc.cpp:200-230 |
| 69 const llvm::TargetMachineRegistry::Entry* targetEntry; | |
| 70 std::string targetError; | |
| 71 targetEntry = llvm::TargetMachineRegistry::getClosestStaticTargetForModule(*ir.module, targetError); | |
| 72 assert(targetEntry && "Failed to find a static target for module"); | |
| 73 std::auto_ptr<llvm::TargetMachine> targetPtr(targetEntry->CtorFn(*ir.module, "")); // TODO: replace "" with features | |
| 74 assert(targetPtr.get() && "Could not allocate target machine!"); | |
| 75 llvm::TargetMachine &targetMachine = *targetPtr.get(); | |
| 76 gTargetData = targetMachine.getTargetData(); | |
| 1 | 77 |
| 6 | 78 // process module members |
| 1 | 79 for (int k=0; k < members->dim; k++) { |
| 80 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 81 assert(dsym); | |
| 82 dsym->toObjFile(); | |
| 83 } | |
| 84 | |
| 85 gTargetData = 0; | |
| 86 | |
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87 // emit the llvm main function if necessary |
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88 if (ir.emitMain) { |
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89 LLVM_DtoMain(); |
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90 } |
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91 |
| 6 | 92 // verify the llvm |
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93 if (!global.params.novalidate) { |
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94 std::string verifyErr; |
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95 Logger::println("Verifying module..."); |
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96 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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97 { |
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98 error("%s", verifyErr.c_str()); |
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99 fatal(); |
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100 } |
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101 else { |
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102 Logger::println("Verification passed!"); |
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103 } |
| 1 | 104 } |
| 105 | |
| 106 // run passes | |
| 107 // TODO | |
| 108 | |
| 52 | 109 // write bytecode |
| 110 { | |
| 111 Logger::println("Writing LLVM bitcode\n"); | |
| 112 std::ofstream bos(bcfile->name->toChars(), std::ios::binary); | |
| 113 llvm::WriteBitcodeToFile(ir.module, bos); | |
| 114 } | |
| 1 | 115 |
| 52 | 116 // disassemble ? |
| 117 if (global.params.disassemble) { | |
| 118 Logger::println("Writing LLVM asm to: %s\n", llfile->name->toChars()); | |
| 119 std::ofstream aos(llfile->name->toChars()); | |
| 120 ir.module->print(aos); | |
| 121 } | |
| 1 | 122 |
| 123 delete ir.module; | |
| 124 gIR = NULL; | |
| 125 } | |
| 126 | |
| 127 /* ================================================================== */ | |
| 128 | |
| 129 // Put out instance of ModuleInfo for this Module | |
| 130 | |
| 131 void Module::genmoduleinfo() | |
| 132 { | |
| 133 } | |
| 134 | |
| 135 /* ================================================================== */ | |
| 136 | |
| 137 void Dsymbol::toObjFile() | |
| 138 { | |
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139 Logger::println("Ignoring Dsymbol::toObjFile for %s", toChars()); |
| 1 | 140 } |
| 141 | |
| 142 /* ================================================================== */ | |
| 143 | |
| 144 void Declaration::toObjFile() | |
| 145 { | |
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146 Logger::println("Ignoring Declaration::toObjFile for %s", toChars()); |
| 1 | 147 } |
| 148 | |
| 149 /* ================================================================== */ | |
| 150 | |
| 6 | 151 /// Returns the LLVM style index from a DMD style offset |
| 73 | 152 size_t AggregateDeclaration::offsetToIndex(Type* t, unsigned os, std::vector<unsigned>& result) |
| 1 | 153 { |
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154 Logger::println("checking for offset %u type %s:", os, t->toChars()); |
| 23 | 155 LOG_SCOPE; |
| 1 | 156 for (unsigned i=0; i<fields.dim; ++i) { |
| 157 VarDeclaration* vd = (VarDeclaration*)fields.data[i]; | |
| 40 | 158 Type* vdtype = LLVM_DtoDType(vd->type); |
| 159 Logger::println("found %u type %s", vd->offset, vdtype->toChars()); | |
| 160 if (os == vd->offset && vdtype == t) { | |
| 73 | 161 assert(vd->llvmFieldIndex >= 0); |
| 162 result.push_back(vd->llvmFieldIndex); | |
| 163 return vd->llvmFieldIndexOffset; | |
| 23 | 164 } |
| 40 | 165 else if (vdtype->ty == Tstruct && (vd->offset + vdtype->size()) > os) { |
| 166 TypeStruct* ts = (TypeStruct*)vdtype; | |
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167 StructDeclaration* sd = ts->sym; |
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168 result.push_back(i); |
| 73 | 169 return sd->offsetToIndex(t, os - vd->offset, result); |
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170 } |
| 1 | 171 } |
| 73 | 172 //assert(0 && "Offset not found in any aggregate field"); |
| 173 return (size_t)-1; | |
| 1 | 174 } |
| 175 | |
| 176 /* ================================================================== */ | |
| 177 | |
| 178 static unsigned LLVM_ClassOffsetToIndex(ClassDeclaration* cd, unsigned os, unsigned& idx) | |
| 179 { | |
| 180 // start at the bottom of the inheritance chain | |
| 181 if (cd->baseClass != 0) { | |
| 182 unsigned o = LLVM_ClassOffsetToIndex(cd->baseClass, os, idx); | |
| 183 if (o != (unsigned)-1) | |
| 184 return o; | |
| 185 } | |
| 186 | |
| 187 // check this class | |
| 188 unsigned i; | |
| 189 for (i=0; i<cd->fields.dim; ++i) { | |
| 190 VarDeclaration* vd = (VarDeclaration*)cd->fields.data[i]; | |
| 191 if (os == vd->offset) | |
| 192 return i+idx; | |
| 193 } | |
| 194 idx += i; | |
| 195 | |
| 196 return (unsigned)-1; | |
| 197 } | |
| 198 | |
| 6 | 199 /// Returns the LLVM style index from a DMD style offset |
| 200 /// Handles class inheritance | |
| 73 | 201 size_t ClassDeclaration::offsetToIndex(Type* t, unsigned os, std::vector<unsigned>& result) |
| 1 | 202 { |
| 203 unsigned idx = 0; | |
| 204 unsigned r = LLVM_ClassOffsetToIndex(this, os, idx); | |
| 205 assert(r != (unsigned)-1 && "Offset not found in any aggregate field"); | |
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206 result.push_back(r+1); // vtable is 0 |
| 73 | 207 return 0; |
| 1 | 208 } |
| 209 | |
| 210 /* ================================================================== */ | |
| 211 | |
| 212 void InterfaceDeclaration::toObjFile() | |
| 213 { | |
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214 Logger::println("Ignoring InterfaceDeclaration::toObjFile for %s", toChars()); |
| 1 | 215 } |
| 216 | |
| 217 /* ================================================================== */ | |
| 218 | |
| 219 void StructDeclaration::toObjFile() | |
| 220 { | |
| 40 | 221 TypeStruct* ts = (TypeStruct*)LLVM_DtoDType(type); |
| 1 | 222 if (llvmType != 0) |
| 223 return; | |
| 224 | |
| 225 static int sdi = 0; | |
| 226 Logger::print("StructDeclaration::toObjFile(%d): %s\n", sdi++, toChars()); | |
| 227 LOG_SCOPE; | |
| 228 | |
| 229 gIR->structs.push_back(IRStruct(ts)); | |
| 230 | |
| 231 for (int k=0; k < members->dim; k++) { | |
| 232 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
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233 dsym->toObjFile(); |
| 1 | 234 } |
| 235 | |
| 73 | 236 Logger::println("doing struct fields"); |
| 237 | |
| 238 llvm::StructType* structtype = 0; | |
| 239 std::vector<llvm::Constant*> fieldinits; | |
| 240 | |
| 241 if (gIR->topstruct().offsets.empty()) | |
| 242 { | |
| 243 std::vector<const llvm::Type*> fieldtypes; | |
| 244 Logger::println("has no fields"); | |
| 245 fieldtypes.push_back(llvm::Type::Int8Ty); | |
| 246 fieldinits.push_back(llvm::ConstantInt::get(llvm::Type::Int8Ty, 0, false)); | |
| 247 structtype = llvm::StructType::get(fieldtypes); | |
| 248 } | |
| 249 else | |
| 23 | 250 { |
| 73 | 251 Logger::println("has fields"); |
| 252 std::vector<const llvm::Type*> fieldtypes; | |
| 253 unsigned prevsize = (unsigned)-1; | |
| 254 unsigned lastoffset = (unsigned)-1; | |
| 255 const llvm::Type* fieldtype = NULL; | |
| 256 llvm::Constant* fieldinit = NULL; | |
| 257 size_t fieldpad = 0; | |
| 258 int idx = 0; | |
| 259 for (IRStruct::OffsetMap::iterator i=gIR->topstruct().offsets.begin(); i!=gIR->topstruct().offsets.end(); ++i) { | |
| 260 // first iteration | |
| 261 if (lastoffset == (unsigned)-1) { | |
| 262 lastoffset = i->first; | |
| 263 assert(lastoffset == 0); | |
| 264 fieldtype = LLVM_DtoType(i->second.var->type); | |
| 265 fieldinit = i->second.init; | |
| 266 prevsize = gTargetData->getTypeSize(fieldtype); | |
| 267 i->second.var->llvmFieldIndex = idx; | |
| 268 } | |
| 269 // colliding offset? | |
| 270 else if (lastoffset == i->first) { | |
| 271 const llvm::Type* t = LLVM_DtoType(i->second.var->type); | |
| 272 size_t s = gTargetData->getTypeSize(t); | |
| 273 if (s > prevsize) { | |
| 274 fieldpad = s - prevsize; | |
| 275 prevsize = s; | |
| 276 } | |
| 277 llvmHasUnions = true; | |
| 278 i->second.var->llvmFieldIndex = idx; | |
| 279 } | |
| 280 // intersecting offset? | |
| 281 else if (i->first < (lastoffset + prevsize)) { | |
| 282 const llvm::Type* t = LLVM_DtoType(i->second.var->type); | |
| 283 size_t s = gTargetData->getTypeSize(t); | |
| 284 assert((i->first + s) <= (lastoffset + prevsize)); // this holds because all types are aligned to their size | |
| 285 llvmHasUnions = true; | |
| 286 i->second.var->llvmFieldIndex = idx; | |
| 287 i->second.var->llvmFieldIndexOffset = (i->first - lastoffset) / s; | |
| 288 } | |
| 289 // fresh offset | |
| 290 else { | |
| 291 // commit the field | |
| 292 fieldtypes.push_back(fieldtype); | |
| 293 fieldinits.push_back(fieldinit); | |
| 294 if (fieldpad) { | |
| 295 // match up with below | |
| 296 std::vector<llvm::Constant*> vals(fieldpad, llvm::ConstantInt::get(llvm::Type::Int8Ty, 0, false)); | |
| 297 llvm::Constant* c = llvm::ConstantArray::get(llvm::ArrayType::get(llvm::Type::Int8Ty, fieldpad), vals); | |
| 298 fieldtypes.push_back(c->getType()); | |
| 299 fieldinits.push_back(c); | |
| 300 idx++; | |
| 301 } | |
| 302 | |
| 303 idx++; | |
| 304 | |
| 305 // start new | |
| 306 lastoffset = i->first; | |
| 307 fieldtype = LLVM_DtoType(i->second.var->type); | |
| 308 fieldinit = i->second.init; | |
| 309 prevsize = gTargetData->getTypeSize(fieldtype); | |
| 310 i->second.var->llvmFieldIndex = idx; | |
| 311 fieldpad = 0; | |
| 312 } | |
| 313 } | |
| 314 fieldtypes.push_back(fieldtype); | |
| 315 fieldinits.push_back(fieldinit); | |
| 316 if (fieldpad) { | |
| 317 // match up with above | |
| 318 std::vector<llvm::Constant*> vals(fieldpad, llvm::ConstantInt::get(llvm::Type::Int8Ty, 0, false)); | |
| 319 llvm::Constant* c = llvm::ConstantArray::get(llvm::ArrayType::get(llvm::Type::Int8Ty, fieldpad), vals); | |
| 320 fieldtypes.push_back(c->getType()); | |
| 321 fieldinits.push_back(c); | |
| 322 } | |
| 323 | |
| 324 Logger::println("creating struct type"); | |
| 325 structtype = llvm::StructType::get(fieldtypes); | |
| 23 | 326 } |
| 327 | |
| 1 | 328 // refine abstract types for stuff like: struct S{S* next;} |
| 329 if (gIR->topstruct().recty != 0) | |
| 330 { | |
| 331 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 332 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 333 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 334 } | |
| 335 | |
| 336 ts->llvmType = structtype; | |
| 337 llvmType = structtype; | |
| 338 | |
| 339 if (parent->isModule()) { | |
| 340 gIR->module->addTypeName(mangle(),ts->llvmType); | |
| 341 } | |
| 342 | |
| 343 // generate static data | |
| 344 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 345 llvm::Constant* _init = 0; | |
| 346 | |
| 347 // always generate the constant initalizer | |
| 348 if (!zeroInit) { | |
| 349 Logger::println("Not zero initialized"); | |
| 73 | 350 //assert(tk == gIR->gIR->topstruct()().size()); |
| 1 | 351 #ifndef LLVMD_NO_LOGGER |
| 73 | 352 Logger::cout() << "struct type: " << *structtype << '\n'; |
| 353 for (size_t k=0; k<fieldinits.size(); ++k) { | |
| 1 | 354 Logger::cout() << "Type:" << '\n'; |
| 73 | 355 Logger::cout() << *fieldinits[k]->getType() << '\n'; |
| 1 | 356 Logger::cout() << "Value:" << '\n'; |
| 73 | 357 Logger::cout() << *fieldinits[k] << '\n'; |
| 1 | 358 } |
| 359 Logger::cout() << "Initializer printed" << '\n'; | |
| 360 #endif | |
| 73 | 361 llvmInitZ = llvm::ConstantStruct::get(structtype,fieldinits); |
| 1 | 362 } |
| 363 else { | |
| 364 Logger::println("Zero initialized"); | |
| 365 llvmInitZ = llvm::ConstantAggregateZero::get(structtype); | |
| 366 } | |
| 367 | |
| 368 // only provide the constant initializer for the defining module | |
| 369 if (getModule() == gIR->dmodule) | |
| 370 { | |
| 371 _init = llvmInitZ; | |
| 372 } | |
| 373 | |
| 73 | 374 std::string initname("_D"); |
| 375 initname.append(mangle()); | |
| 376 initname.append("6__initZ"); | |
| 1 | 377 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, _init, initname, gIR->module); |
| 378 ts->llvmInit = initvar; | |
| 379 | |
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380 // generate member function definitions |
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381 gIR->topstruct().queueFuncs = false; |
| 73 | 382 IRStruct::FuncDeclVector& mfs = gIR->topstruct().funcs; |
| 1 | 383 size_t n = mfs.size(); |
| 384 for (size_t i=0; i<n; ++i) { | |
| 385 mfs[i]->toObjFile(); | |
| 386 } | |
| 387 | |
| 388 llvmDModule = gIR->dmodule; | |
| 389 | |
| 390 gIR->structs.pop_back(); | |
| 391 | |
| 392 // generate typeinfo | |
| 73 | 393 if (getModule() == gIR->dmodule && llvmInternal != LLVMnotypeinfo) |
| 72 | 394 type->getTypeInfo(NULL); |
| 1 | 395 } |
| 396 | |
| 397 /* ================================================================== */ | |
| 398 | |
| 399 static void LLVM_AddBaseClassData(BaseClasses* bcs) | |
| 400 { | |
| 401 // add base class data members first | |
| 402 for (int j=0; j<bcs->dim; j++) | |
| 403 { | |
| 404 BaseClass* bc = (BaseClass*)(bcs->data[j]); | |
| 405 assert(bc); | |
| 40 | 406 Logger::println("Adding base class members of %s", bc->base->toChars()); |
| 407 LOG_SCOPE; | |
| 408 | |
| 1 | 409 LLVM_AddBaseClassData(&bc->base->baseclasses); |
| 410 for (int k=0; k < bc->base->members->dim; k++) { | |
| 411 Dsymbol* dsym = (Dsymbol*)(bc->base->members->data[k]); | |
| 412 if (dsym->isVarDeclaration()) | |
| 413 { | |
| 414 dsym->toObjFile(); | |
| 415 } | |
| 416 } | |
| 417 } | |
| 418 } | |
| 419 | |
| 420 void ClassDeclaration::toObjFile() | |
| 421 { | |
| 40 | 422 TypeClass* ts = (TypeClass*)LLVM_DtoDType(type); |
| 1 | 423 if (ts->llvmType != 0 || llvmInProgress) |
| 424 return; | |
| 425 | |
| 426 llvmInProgress = true; | |
| 427 | |
| 428 static int fdi = 0; | |
| 429 Logger::print("ClassDeclaration::toObjFile(%d): %s\n", fdi++, toChars()); | |
| 430 LOG_SCOPE; | |
| 431 | |
| 6 | 432 gIR->structs.push_back(IRStruct(ts)); |
| 1 | 433 gIR->classes.push_back(this); |
| 434 | |
| 435 // add vtable | |
| 9 | 436 llvm::PATypeHolder pa = llvm::OpaqueType::get(); |
| 437 const llvm::Type* vtabty = llvm::PointerType::get(pa); | |
| 73 | 438 |
| 439 std::vector<const llvm::Type*> fieldtypes; | |
| 440 fieldtypes.push_back(vtabty); | |
| 441 | |
| 442 std::vector<llvm::Constant*> fieldinits; | |
| 443 fieldinits.push_back(0); | |
| 1 | 444 |
| 445 // base classes first | |
| 446 LLVM_AddBaseClassData(&baseclasses); | |
| 447 | |
| 448 // then add own members | |
| 449 for (int k=0; k < members->dim; k++) { | |
| 450 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
| 451 dsym->toObjFile(); | |
| 452 } | |
| 453 | |
| 73 | 454 // fill out fieldtypes/inits |
| 455 for (IRStruct::OffsetMap::iterator i=gIR->topstruct().offsets.begin(); i!=gIR->topstruct().offsets.end(); ++i) { | |
| 456 fieldtypes.push_back(LLVM_DtoType(i->second.var->type)); | |
| 457 fieldinits.push_back(i->second.init); | |
| 458 } | |
| 459 | |
| 460 llvm::StructType* structtype = llvm::StructType::get(fieldtypes); | |
| 6 | 461 // refine abstract types for stuff like: class C {C next;} |
| 462 if (gIR->topstruct().recty != 0) | |
| 463 { | |
| 464 llvm::PATypeHolder& pa = gIR->topstruct().recty; | |
| 465 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(structtype); | |
| 466 structtype = llvm::cast<llvm::StructType>(pa.get()); | |
| 467 } | |
| 468 | |
| 1 | 469 ts->llvmType = structtype; |
| 470 llvmType = structtype; | |
| 471 | |
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472 bool needs_definition = false; |
| 1 | 473 if (parent->isModule()) { |
| 474 gIR->module->addTypeName(mangle(),ts->llvmType); | |
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475 needs_definition = (getModule() == gIR->dmodule); |
| 1 | 476 } |
| 477 else { | |
| 478 assert(0 && "class parent is not a module"); | |
| 479 } | |
| 480 | |
| 9 | 481 // generate vtable |
| 482 llvm::GlobalVariable* svtblVar = 0; | |
| 483 std::vector<llvm::Constant*> sinits; | |
| 484 std::vector<const llvm::Type*> sinits_ty; | |
| 485 sinits.reserve(vtbl.dim); | |
| 486 sinits_ty.reserve(vtbl.dim); | |
| 487 | |
| 488 for (int k=0; k < vtbl.dim; k++) | |
| 489 { | |
| 490 Dsymbol* dsym = (Dsymbol*)vtbl.data[k]; | |
| 491 assert(dsym); | |
| 492 //Logger::cout() << "vtblsym: " << dsym->toChars() << '\n'; | |
| 493 | |
| 494 if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { | |
| 495 fd->toObjFile(); | |
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496 assert(fd->llvmValue); |
| 9 | 497 llvm::Constant* c = llvm::cast<llvm::Constant>(fd->llvmValue); |
| 498 sinits.push_back(c); | |
| 499 sinits_ty.push_back(c->getType()); | |
| 500 } | |
| 501 else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { | |
| 502 const llvm::Type* cty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 503 llvm::Constant* c = llvm::Constant::getNullValue(cty); | |
| 504 sinits.push_back(c); | |
| 505 sinits_ty.push_back(cty); | |
| 506 } | |
| 507 else | |
| 508 assert(0); | |
| 509 } | |
| 510 | |
| 511 const llvm::StructType* svtbl_ty = 0; | |
| 512 if (!sinits.empty()) | |
| 513 { | |
| 514 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 515 | |
| 52 | 516 std::string varname("_D"); |
| 517 varname.append(mangle()); | |
| 518 varname.append("6__vtblZ"); | |
| 519 | |
| 9 | 520 std::string styname(mangle()); |
| 521 styname.append("__vtblTy"); | |
| 522 | |
| 523 svtbl_ty = llvm::StructType::get(sinits_ty); | |
| 524 gIR->module->addTypeName(styname, svtbl_ty); | |
| 525 svtblVar = new llvm::GlobalVariable(svtbl_ty, true, _linkage, 0, varname, gIR->module); | |
| 526 | |
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527 llvmConstVtbl = llvm::cast<llvm::ConstantStruct>(llvm::ConstantStruct::get(svtbl_ty, sinits)); |
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528 if (needs_definition) |
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529 svtblVar->setInitializer(llvmConstVtbl); |
| 9 | 530 llvmVtbl = svtblVar; |
| 531 } | |
| 532 | |
| 533 //////////////////////////////////////////////////////////////////////////////// | |
| 534 | |
| 535 // refine for final vtable type | |
| 536 llvm::cast<llvm::OpaqueType>(pa.get())->refineAbstractTypeTo(svtbl_ty); | |
| 537 svtbl_ty = llvm::cast<llvm::StructType>(pa.get()); | |
| 538 structtype = llvm::cast<llvm::StructType>(gIR->topstruct().recty.get()); | |
| 539 ts->llvmType = structtype; | |
| 540 llvmType = structtype; | |
| 541 | |
| 542 // generate initializer | |
| 543 llvm::GlobalValue::LinkageTypes _linkage = llvm::GlobalValue::ExternalLinkage; | |
| 544 llvm::Constant* _init = 0; | |
| 545 | |
| 546 // first field is always the vtable | |
| 547 assert(svtblVar != 0); | |
| 73 | 548 fieldinits[0] = svtblVar; |
| 9 | 549 |
| 73 | 550 llvmInitZ = _init = llvm::ConstantStruct::get(structtype,fieldinits); |
| 9 | 551 assert(_init); |
| 52 | 552 |
| 553 std::string initname("_D"); | |
| 554 initname.append(mangle()); | |
| 555 initname.append("6__initZ"); | |
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556 //Logger::cout() << *_init << '\n'; |
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557 llvm::GlobalVariable* initvar = new llvm::GlobalVariable(ts->llvmType, true, _linkage, NULL, initname, gIR->module); |
| 9 | 558 ts->llvmInit = initvar; |
| 559 | |
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560 if (needs_definition) { |
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561 initvar->setInitializer(_init); |
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562 // generate member functions |
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563 gIR->topstruct().queueFuncs = false; |
| 73 | 564 IRStruct::FuncDeclVector& mfs = gIR->topstruct().funcs; |
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565 size_t n = mfs.size(); |
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566 for (size_t i=0; i<n; ++i) { |
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567 mfs[i]->toObjFile(); |
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568 } |
| 1 | 569 } |
| 570 | |
| 571 gIR->classes.pop_back(); | |
| 572 gIR->structs.pop_back(); | |
| 573 | |
| 574 llvmInProgress = false; | |
| 575 } | |
| 576 | |
| 577 /****************************************** | |
| 578 * Get offset of base class's vtbl[] initializer from start of csym. | |
| 579 * Returns ~0 if not this csym. | |
| 580 */ | |
| 581 | |
| 582 unsigned ClassDeclaration::baseVtblOffset(BaseClass *bc) | |
| 583 { | |
| 584 return ~0; | |
| 585 } | |
| 586 | |
| 587 /* ================================================================== */ | |
| 588 | |
| 589 void VarDeclaration::toObjFile() | |
| 590 { | |
| 40 | 591 Logger::print("VarDeclaration::toObjFile(): %s | %s\n", toChars(), type->toChars()); |
| 1 | 592 LOG_SCOPE; |
| 593 llvm::Module* M = gIR->module; | |
| 594 | |
| 595 // handle bind pragma | |
| 596 if (llvmInternal == LLVMbind) { | |
| 597 Logger::println("var is bound: %s", llvmInternal1); | |
| 598 llvmValue = M->getGlobalVariable(llvmInternal1); | |
| 599 assert(llvmValue); | |
| 600 return; | |
| 601 } | |
| 602 | |
| 603 // global variable or magic | |
| 40 | 604 if (isDataseg() || parent->isModule()) |
| 1 | 605 { |
| 40 | 606 if (llvmTouched) return; |
| 607 else llvmTouched = true; | |
| 608 | |
| 1 | 609 bool _isconst = isConst(); |
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610 |
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611 llvm::GlobalValue::LinkageTypes _linkage; |
| 52 | 612 if (parent && parent->isFuncDeclaration()) |
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613 _linkage = llvm::GlobalValue::InternalLinkage; |
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614 else |
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615 _linkage = LLVM_DtoLinkage(protection, storage_class); |
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616 |
| 40 | 617 Type* t = LLVM_DtoDType(type); |
| 618 | |
| 619 const llvm::Type* _type = LLVM_DtoType(t); | |
|
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620 assert(_type); |
| 1 | 621 |
| 622 llvm::Constant* _init = 0; | |
| 623 bool _signed = !type->isunsigned(); | |
| 624 | |
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625 Logger::println("Creating global variable"); |
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626 std::string _name(mangle()); |
| 52 | 627 |
|
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628 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(_type,_isconst,_linkage,0,_name,M); |
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629 llvmValue = gvar; |
| 40 | 630 |
| 52 | 631 // if extern don't emit initializer |
| 632 if (!(storage_class & STCextern)) | |
| 633 { | |
| 634 _init = LLVM_DtoConstInitializer(t, init); | |
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635 |
| 52 | 636 //Logger::cout() << "initializer: " << *_init << '\n'; |
| 637 if (_type != _init->getType()) { | |
| 638 Logger::cout() << "got type '" << *_init->getType() << "' expected '" << *_type << "'\n"; | |
| 639 // zero initalizer | |
| 640 if (_init->isNullValue()) | |
| 641 _init = llvm::Constant::getNullValue(_type); | |
| 642 // pointer to global constant (struct.init) | |
| 643 else if (llvm::isa<llvm::GlobalVariable>(_init)) | |
| 644 { | |
| 645 assert(_init->getType()->getContainedType(0) == _type); | |
| 646 llvm::GlobalVariable* gv = llvm::cast<llvm::GlobalVariable>(_init); | |
| 647 assert(t->ty == Tstruct); | |
| 648 TypeStruct* ts = (TypeStruct*)t; | |
| 649 assert(ts->sym->llvmInitZ); | |
| 650 _init = ts->sym->llvmInitZ; | |
| 651 } | |
| 652 // array single value init | |
| 653 else if (llvm::isa<llvm::ArrayType>(_type)) | |
| 654 { | |
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655 _init = LLVM_DtoConstStaticArray(_type, _init); |
| 52 | 656 } |
| 657 else { | |
| 658 Logger::cout() << "Unexpected initializer type: " << *_type << '\n'; | |
| 659 //assert(0); | |
| 660 } | |
| 1 | 661 } |
| 52 | 662 |
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663 Logger::cout() << "final init = " << *_init << '\n'; |
| 52 | 664 gvar->setInitializer(_init); |
| 1 | 665 } |
| 666 | |
| 40 | 667 llvmDModule = gIR->dmodule; |
| 1 | 668 |
| 669 //if (storage_class & STCprivate) | |
| 670 // gvar->setVisibility(llvm::GlobalValue::ProtectedVisibility); | |
| 671 } | |
| 672 | |
| 673 // inside aggregate declaration. declare a field. | |
| 674 else | |
| 675 { | |
| 676 Logger::println("Aggregate var declaration: '%s' offset=%d", toChars(), offset); | |
| 677 | |
| 40 | 678 Type* t = LLVM_DtoDType(type); |
| 679 const llvm::Type* _type = LLVM_DtoType(t); | |
| 1 | 680 |
| 40 | 681 llvm::Constant*_init = LLVM_DtoConstInitializer(t, init); |
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682 assert(_init); |
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683 Logger::cout() << "field init is: " << *_init << " type should be " << *_type << '\n'; |
| 40 | 684 if (_type != _init->getType()) |
| 1 | 685 { |
| 40 | 686 if (t->ty == Tsarray) |
| 1 | 687 { |
| 688 const llvm::ArrayType* arrty = llvm::cast<llvm::ArrayType>(_type); | |
| 689 uint64_t n = arrty->getNumElements(); | |
| 690 std::vector<llvm::Constant*> vals(n,_init); | |
| 691 _init = llvm::ConstantArray::get(arrty, vals); | |
| 692 } | |
| 40 | 693 else if (t->ty == Tarray) |
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694 { |
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695 assert(llvm::isa<llvm::StructType>(_type)); |
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696 _init = llvm::ConstantAggregateZero::get(_type); |
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697 } |
| 40 | 698 else if (t->ty == Tstruct) |
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699 { |
| 6 | 700 const llvm::StructType* structty = llvm::cast<llvm::StructType>(_type); |
| 40 | 701 TypeStruct* ts = (TypeStruct*)t; |
| 9 | 702 assert(ts); |
| 703 assert(ts->sym); | |
| 6 | 704 assert(ts->sym->llvmInitZ); |
| 705 _init = ts->sym->llvmInitZ; | |
| 706 } | |
| 40 | 707 else if (t->ty == Tclass) |
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708 { |
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709 _init = llvm::Constant::getNullValue(_type); |
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710 } |
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711 else { |
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712 Logger::println("failed for type %s", type->toChars()); |
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713 assert(0); |
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714 } |
| 1 | 715 } |
| 73 | 716 |
| 717 // add the field in the IRStruct | |
| 718 gIR->topstruct().offsets.insert(std::make_pair(offset, IRStruct::Offset(this,_init))); | |
| 1 | 719 } |
| 720 | |
| 721 Logger::println("VarDeclaration::toObjFile is done"); | |
| 722 } | |
| 723 | |
| 724 /* ================================================================== */ | |
| 725 | |
| 726 void TypedefDeclaration::toObjFile() | |
| 727 { | |
| 728 static int tdi = 0; | |
| 729 Logger::print("TypedefDeclaration::toObjFile(%d): %s\n", tdi++, toChars()); | |
| 730 LOG_SCOPE; | |
| 731 | |
| 52 | 732 // generate typeinfo |
| 72 | 733 type->getTypeInfo(NULL); |
| 1 | 734 } |
| 735 | |
| 736 /* ================================================================== */ | |
| 737 | |
| 738 void EnumDeclaration::toObjFile() | |
| 739 { | |
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740 Logger::println("Ignoring EnumDeclaration::toObjFile for %s", toChars()); |
| 1 | 741 } |
| 742 | |
| 743 /* ================================================================== */ | |
| 744 | |
| 745 void FuncDeclaration::toObjFile() | |
| 746 { | |
| 18 | 747 if (llvmDModule) { |
| 9 | 748 assert(llvmValue != 0); |
| 1 | 749 return; |
| 750 } | |
| 751 | |
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752 if (isUnitTestDeclaration()) { |
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753 Logger::println("*** ATTENTION: ignoring unittest declaration: %s", toChars()); |
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754 return; |
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755 } |
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756 |
|
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757 Type* t = LLVM_DtoDType(type); |
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758 TypeFunction* f = (TypeFunction*)t; |
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759 |
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760 bool declareOnly = false; |
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761 if (TemplateInstance* tinst = parent->isTemplateInstance()) { |
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762 TemplateDeclaration* tempdecl = tinst->tempdecl; |
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763 if (tempdecl->llvmInternal == LLVMva_start) |
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764 { |
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765 Logger::println("magic va_start found"); |
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766 llvmInternal = LLVMva_start; |
|
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767 declareOnly = true; |
|
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|
768 } |
|
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|
769 else if (tempdecl->llvmInternal == LLVMva_arg) |
|
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|
770 { |
|
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|
771 Logger::println("magic va_arg found"); |
|
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|
772 llvmInternal = LLVMva_arg; |
|
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|
773 return; |
|
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|
774 } |
|
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|
775 } |
|
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|
776 |
| 9 | 777 llvm::Function* func = LLVM_DtoDeclareFunction(this); |
| 778 | |
|
55
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|
779 if (declareOnly) |
|
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|
780 return; |
|
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|
781 |
|
31
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|
782 if (!gIR->structs.empty() && gIR->topstruct().queueFuncs) { |
|
11
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|
783 if (!llvmQueued) { |
|
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|
784 Logger::println("queueing %s", toChars()); |
|
31
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|
785 gIR->topstruct().funcs.push_back(this); |
|
11
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|
786 llvmQueued = true; |
|
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|
787 } |
| 10 | 788 return; // we wait with the definition as they might invoke a virtual method and the vtable is not yet complete |
| 1 | 789 } |
| 790 | |
|
11
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|
791 assert(f->llvmType); |
|
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|
792 const llvm::FunctionType* functype = llvm::cast<llvm::FunctionType>(llvmValue->getType()->getContainedType(0)); |
| 1 | 793 |
| 794 // only members of the current module maybe be defined | |
|
17
6c6cd097bcdf
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|
795 if (getModule() == gIR->dmodule || parent->isTemplateInstance()) |
| 1 | 796 { |
|
11
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|
797 llvmDModule = gIR->dmodule; |
|
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|
798 |
| 1 | 799 bool allow_fbody = true; |
| 800 // handle static constructor / destructor | |
| 801 if (isStaticCtorDeclaration() || isStaticDtorDeclaration()) { | |
| 802 const llvm::ArrayType* sctor_type = llvm::ArrayType::get(llvm::PointerType::get(functype),1); | |
| 803 //Logger::cout() << "static ctor type: " << *sctor_type << '\n'; | |
|
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diff
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|
804 |
| 1 | 805 llvm::Constant* sctor_func = llvm::cast<llvm::Constant>(llvmValue); |
| 806 //Logger::cout() << "static ctor func: " << *sctor_func << '\n'; | |
|
11
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|
807 |
| 1 | 808 llvm::Constant* sctor_init = 0; |
| 809 if (llvmInternal == LLVMnull) | |
| 810 { | |
| 811 llvm::Constant* sctor_init_null = llvm::Constant::getNullValue(sctor_func->getType()); | |
| 812 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_init_null,1); | |
| 813 allow_fbody = false; | |
| 814 } | |
| 815 else | |
| 816 { | |
| 817 sctor_init = llvm::ConstantArray::get(sctor_type,&sctor_func,1); | |
| 818 } | |
|
11
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|
819 |
| 1 | 820 //Logger::cout() << "static ctor init: " << *sctor_init << '\n'; |
|
11
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|
821 |
| 1 | 822 // output the llvm.global_ctors array |
| 823 const char* varname = isStaticCtorDeclaration() ? "_d_module_ctor_array" : "_d_module_dtor_array"; | |
| 824 llvm::GlobalVariable* sctor_arr = new llvm::GlobalVariable(sctor_type, false, llvm::GlobalValue::AppendingLinkage, sctor_init, varname, gIR->module); | |
| 825 } | |
| 826 | |
| 827 // function definition | |
| 828 if (allow_fbody && fbody != 0) | |
| 829 { | |
| 40 | 830 gIR->functions.push_back(IRFunction(this)); |
| 831 gIR->func().func = func; | |
|
15
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|
832 |
|
11
d3ee9efe20e2
[svn r15] * Fixed a bunch problems with virtual calls. Seems I did some rather poor testing.
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|
833 // first make absolutely sure the type is up to date |
|
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|
834 f->llvmType = llvmValue->getType()->getContainedType(0); |
|
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[svn r15] * Fixed a bunch problems with virtual calls. Seems I did some rather poor testing.
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|
835 |
| 52 | 836 //Logger::cout() << "func type: " << *f->llvmType << '\n'; |
|
31
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|
837 |
|
15
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[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
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diff
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|
838 // this handling |
|
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
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diff
changeset
|
839 if (f->llvmUsesThis) { |
|
50
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|
840 Logger::println("uses this"); |
|
15
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[svn r19] * Added support for reassigning 'this' inside class constructors.
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|
841 if (f->llvmRetInPtr) |
|
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
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|
842 llvmThisVar = ++func->arg_begin(); |
|
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[svn r19] * Added support for reassigning 'this' inside class constructors.
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14
diff
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|
843 else |
|
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[svn r19] * Added support for reassigning 'this' inside class constructors.
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|
844 llvmThisVar = func->arg_begin(); |
|
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
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|
845 assert(llvmThisVar != 0); |
|
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
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|
846 } |
|
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
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diff
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|
847 |
| 9 | 848 if (isMain()) |
| 849 gIR->emitMain = true; | |
| 850 | |
| 40 | 851 llvm::BasicBlock* beginbb = new llvm::BasicBlock("entry",func); |
| 852 llvm::BasicBlock* endbb = new llvm::BasicBlock("endentry",func); | |
| 1 | 853 |
| 854 //assert(gIR->scopes.empty()); | |
| 40 | 855 gIR->scopes.push_back(IRScope(beginbb, endbb)); |
|
11
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|
856 |
| 1 | 857 // create alloca point |
| 858 f->llvmAllocaPoint = new llvm::BitCastInst(llvm::ConstantInt::get(llvm::Type::Int32Ty,0,false),llvm::Type::Int32Ty,"alloca point",gIR->scopebb()); | |
| 40 | 859 gIR->func().allocapoint = f->llvmAllocaPoint; |
|
11
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|
860 |
|
50
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diff
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|
861 llvm::Value* parentNested = NULL; |
|
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|
862 if (FuncDeclaration* fd = toParent()->isFuncDeclaration()) { |
|
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|
863 parentNested = fd->llvmNested; |
|
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|
864 } |
|
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|
865 |
|
6fcc08a4d406
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|
866 // construct nested variables struct |
|
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|
867 if (!llvmNestedVars.empty() || parentNested) { |
|
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|
868 std::vector<const llvm::Type*> nestTypes; |
|
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|
869 int j = 0; |
|
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|
870 if (parentNested) { |
|
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|
871 nestTypes.push_back(parentNested->getType()); |
|
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|
872 j++; |
|
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|
873 } |
|
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|
874 for (std::set<VarDeclaration*>::iterator i=llvmNestedVars.begin(); i!=llvmNestedVars.end(); ++i) { |
|
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|
875 VarDeclaration* vd = *i; |
|
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lindquist
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|
876 vd->llvmNestedIndex = j++; |
|
67
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|
877 if (vd->isParameter()) { |
|
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|
878 assert(vd->llvmValue); |
|
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|
879 nestTypes.push_back(vd->llvmValue->getType()); |
|
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|
880 } |
|
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lindquist
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diff
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|
881 else { |
|
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|
882 nestTypes.push_back(LLVM_DtoType(vd->type)); |
|
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|
883 } |
|
50
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diff
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|
884 } |
|
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|
885 const llvm::StructType* nestSType = llvm::StructType::get(nestTypes); |
|
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|
886 Logger::cout() << "nested var struct has type:" << '\n' << *nestSType; |
|
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|
887 llvmNested = new llvm::AllocaInst(nestSType,"nestedvars",f->llvmAllocaPoint); |
|
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|
888 if (parentNested) { |
|
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|
889 assert(llvmThisVar); |
|
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|
890 llvm::Value* ptr = gIR->ir->CreateBitCast(llvmThisVar, parentNested->getType(), "tmp"); |
|
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|
891 gIR->ir->CreateStore(ptr, LLVM_DtoGEPi(llvmNested, 0,0, "tmp")); |
|
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|
892 } |
|
67
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|
893 for (std::set<VarDeclaration*>::iterator i=llvmNestedVars.begin(); i!=llvmNestedVars.end(); ++i) { |
|
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|
894 VarDeclaration* vd = *i; |
|
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|
895 if (vd->isParameter()) { |
|
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|
896 gIR->ir->CreateStore(vd->llvmValue, LLVM_DtoGEPi(llvmNested, 0, vd->llvmNestedIndex, "tmp")); |
|
68
c4b3f5d2cd9b
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diff
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|
897 vd->llvmValue = llvmNested; |
|
67
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|
898 } |
|
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diff
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|
899 } |
|
50
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lindquist
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|
900 } |
|
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|
901 |
|
57
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|
902 // copy _argptr to a memory location |
|
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[svn r61] Added support for D-style variadic functions :)
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|
903 if (f->linkage == LINKd && f->varargs == 1) |
|
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|
904 { |
|
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|
905 llvm::Value* argptrmem = new llvm::AllocaInst(llvmArgPtr->getType(), "_argptrmem", gIR->topallocapoint()); |
|
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|
906 new llvm::StoreInst(llvmArgPtr, argptrmem, gIR->scopebb()); |
|
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|
907 llvmArgPtr = argptrmem; |
|
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|
908 } |
|
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|
909 |
| 1 | 910 // output function body |
| 911 fbody->toIR(gIR); | |
| 912 | |
| 913 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 914 // in automatically, so we do it here. | |
| 40 | 915 if (!isMain()) { |
| 52 | 916 if (!gIR->scopereturned()) { |
| 40 | 917 // pass the previous block into this block |
| 918 //new llvm::BranchInst(irs.end, irs.begin); | |
| 919 if (func->getReturnType() == llvm::Type::VoidTy) { | |
| 920 new llvm::ReturnInst(gIR->scopebb()); | |
| 921 } | |
| 52 | 922 else { |
| 923 new llvm::ReturnInst(llvm::UndefValue::get(func->getReturnType()), gIR->scopebb()); | |
| 924 } | |
| 40 | 925 } |
| 1 | 926 } |
|
11
d3ee9efe20e2
[svn r15] * Fixed a bunch problems with virtual calls. Seems I did some rather poor testing.
lindquist
parents:
10
diff
changeset
|
927 |
| 1 | 928 // erase alloca point |
| 929 f->llvmAllocaPoint->eraseFromParent(); | |
| 930 f->llvmAllocaPoint = 0; | |
| 40 | 931 gIR->func().allocapoint = 0; |
| 1 | 932 |
| 933 gIR->scopes.pop_back(); | |
| 934 | |
| 935 // get rid of the endentry block, it's never used | |
| 9 | 936 assert(!func->getBasicBlockList().empty()); |
| 1 | 937 func->getBasicBlockList().pop_back(); |
| 938 | |
| 939 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 9 | 940 // would be nice to figure out how to assert that this is correct |
| 1 | 941 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); |
| 942 if (lastbb->empty()) { | |
| 52 | 943 if (lastbb->getNumUses() == 0) |
| 944 lastbb->eraseFromParent(); | |
| 945 else { | |
| 946 new llvm::UnreachableInst(lastbb); | |
| 947 /*if (func->getReturnType() == llvm::Type::VoidTy) { | |
| 948 new llvm::ReturnInst(lastbb); | |
| 949 } | |
| 950 else { | |
| 951 new llvm::ReturnInst(llvm::UndefValue::get(func->getReturnType()), lastbb); | |
| 952 }*/ | |
| 953 } | |
| 1 | 954 } |
|
15
37a4fdab33fc
[svn r19] * Added support for reassigning 'this' inside class constructors.
lindquist
parents:
14
diff
changeset
|
955 |
| 40 | 956 gIR->functions.pop_back(); |
| 1 | 957 } |
|
17
6c6cd097bcdf
[svn r21] * Fixed local instances of imported templates
lindquist
parents:
15
diff
changeset
|
958 |
|
6c6cd097bcdf
[svn r21] * Fixed local instances of imported templates
lindquist
parents:
15
diff
changeset
|
959 // template instances should have weak linkage |
|
6c6cd097bcdf
[svn r21] * Fixed local instances of imported templates
lindquist
parents:
15
diff
changeset
|
960 if (parent->isTemplateInstance()) { |
|
6c6cd097bcdf
[svn r21] * Fixed local instances of imported templates
lindquist
parents:
15
diff
changeset
|
961 func->setLinkage(llvm::GlobalValue::WeakLinkage); |
|
6c6cd097bcdf
[svn r21] * Fixed local instances of imported templates
lindquist
parents:
15
diff
changeset
|
962 } |
| 1 | 963 } |
| 964 } |