1 //===- DebugInfoMetadata.cpp - Implement debug info metadata --------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the debug info Metadata classes. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/IR/DebugInfoMetadata.h" 15 #include "LLVMContextImpl.h" 16 #include "MetadataImpl.h" 17 #include "llvm/ADT/StringSwitch.h" 18 #include "llvm/IR/Function.h" 19 20 using namespace llvm; 21 22 DILocation::DILocation(LLVMContext &C, StorageType Storage, unsigned Line, 23 unsigned Column, ArrayRef<Metadata *> MDs) 24 : MDNode(C, DILocationKind, Storage, MDs) { 25 assert((MDs.size() == 1 || MDs.size() == 2) && 26 "Expected a scope and optional inlined-at"); 27 28 // Set line and column. 29 assert(Column < (1u << 16) && "Expected 16-bit column"); 30 31 SubclassData32 = Line; 32 SubclassData16 = Column; 33 } 34 35 static void adjustColumn(unsigned &Column) { 36 // Set to unknown on overflow. We only have 16 bits to play with here. 37 if (Column >= (1u << 16)) 38 Column = 0; 39 } 40 41 DILocation *DILocation::getImpl(LLVMContext &Context, unsigned Line, 42 unsigned Column, Metadata *Scope, 43 Metadata *InlinedAt, StorageType Storage, 44 bool ShouldCreate) { 45 // Fixup column. 46 adjustColumn(Column); 47 48 if (Storage == Uniqued) { 49 if (auto *N = 50 getUniqued(Context.pImpl->DILocations, 51 DILocationInfo::KeyTy(Line, Column, Scope, InlinedAt))) 52 return N; 53 if (!ShouldCreate) 54 return nullptr; 55 } else { 56 assert(ShouldCreate && "Expected non-uniqued nodes to always be created"); 57 } 58 59 SmallVector<Metadata *, 2> Ops; 60 Ops.push_back(Scope); 61 if (InlinedAt) 62 Ops.push_back(InlinedAt); 63 return storeImpl(new (Ops.size()) 64 DILocation(Context, Storage, Line, Column, Ops), 65 Storage, Context.pImpl->DILocations); 66 } 67 68 unsigned DINode::getFlag(StringRef Flag) { 69 return StringSwitch<unsigned>(Flag) 70 #define HANDLE_DI_FLAG(ID, NAME) .Case("DIFlag" #NAME, Flag##NAME) 71 #include "llvm/IR/DebugInfoFlags.def" 72 .Default(0); 73 } 74 75 const char *DINode::getFlagString(unsigned Flag) { 76 switch (Flag) { 77 default: 78 return ""; 79 #define HANDLE_DI_FLAG(ID, NAME) \ 80 case Flag##NAME: \ 81 return "DIFlag" #NAME; 82 #include "llvm/IR/DebugInfoFlags.def" 83 } 84 } 85 86 unsigned DINode::splitFlags(unsigned Flags, 87 SmallVectorImpl<unsigned> &SplitFlags) { 88 // Accessibility and member pointer flags need to be specially handled, since 89 // they're packed together. 90 if (unsigned A = Flags & FlagAccessibility) { 91 if (A == FlagPrivate) 92 SplitFlags.push_back(FlagPrivate); 93 else if (A == FlagProtected) 94 SplitFlags.push_back(FlagProtected); 95 else 96 SplitFlags.push_back(FlagPublic); 97 Flags &= ~A; 98 } 99 if (unsigned R = Flags & FlagPtrToMemberRep) { 100 if (R == FlagSingleInheritance) 101 SplitFlags.push_back(FlagSingleInheritance); 102 else if (R == FlagMultipleInheritance) 103 SplitFlags.push_back(FlagMultipleInheritance); 104 else 105 SplitFlags.push_back(FlagVirtualInheritance); 106 Flags &= ~R; 107 } 108 109 #define HANDLE_DI_FLAG(ID, NAME) \ 110 if (unsigned Bit = Flags & ID) { \ 111 SplitFlags.push_back(Bit); \ 112 Flags &= ~Bit; \ 113 } 114 #include "llvm/IR/DebugInfoFlags.def" 115 116 return Flags; 117 } 118 119 DIScopeRef DIScope::getScope() const { 120 if (auto *T = dyn_cast<DIType>(this)) 121 return T->getScope(); 122 123 if (auto *SP = dyn_cast<DISubprogram>(this)) 124 return SP->getScope(); 125 126 if (auto *LB = dyn_cast<DILexicalBlockBase>(this)) 127 return LB->getScope(); 128 129 if (auto *NS = dyn_cast<DINamespace>(this)) 130 return NS->getScope(); 131 132 if (auto *M = dyn_cast<DIModule>(this)) 133 return M->getScope(); 134 135 assert((isa<DIFile>(this) || isa<DICompileUnit>(this)) && 136 "Unhandled type of scope."); 137 return nullptr; 138 } 139 140 StringRef DIScope::getName() const { 141 if (auto *T = dyn_cast<DIType>(this)) 142 return T->getName(); 143 if (auto *SP = dyn_cast<DISubprogram>(this)) 144 return SP->getName(); 145 if (auto *NS = dyn_cast<DINamespace>(this)) 146 return NS->getName(); 147 if (auto *M = dyn_cast<DIModule>(this)) 148 return M->getName(); 149 assert((isa<DILexicalBlockBase>(this) || isa<DIFile>(this) || 150 isa<DICompileUnit>(this)) && 151 "Unhandled type of scope."); 152 return ""; 153 } 154 155 #ifndef NDEBUG 156 static bool isCanonical(const MDString *S) { 157 return !S || !S->getString().empty(); 158 } 159 #endif 160 161 GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag, 162 MDString *Header, 163 ArrayRef<Metadata *> DwarfOps, 164 StorageType Storage, bool ShouldCreate) { 165 unsigned Hash = 0; 166 if (Storage == Uniqued) { 167 GenericDINodeInfo::KeyTy Key(Tag, Header, DwarfOps); 168 if (auto *N = getUniqued(Context.pImpl->GenericDINodes, Key)) 169 return N; 170 if (!ShouldCreate) 171 return nullptr; 172 Hash = Key.getHash(); 173 } else { 174 assert(ShouldCreate && "Expected non-uniqued nodes to always be created"); 175 } 176 177 // Use a nullptr for empty headers. 178 assert(isCanonical(Header) && "Expected canonical MDString"); 179 Metadata *PreOps[] = {Header}; 180 return storeImpl(new (DwarfOps.size() + 1) GenericDINode( 181 Context, Storage, Hash, Tag, PreOps, DwarfOps), 182 Storage, Context.pImpl->GenericDINodes); 183 } 184 185 void GenericDINode::recalculateHash() { 186 setHash(GenericDINodeInfo::KeyTy::calculateHash(this)); 187 } 188 189 #define UNWRAP_ARGS_IMPL(...) __VA_ARGS__ 190 #define UNWRAP_ARGS(ARGS) UNWRAP_ARGS_IMPL ARGS 191 #define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS) \ 192 do { \ 193 if (Storage == Uniqued) { \ 194 if (auto *N = getUniqued(Context.pImpl->CLASS##s, \ 195 CLASS##Info::KeyTy(UNWRAP_ARGS(ARGS)))) \ 196 return N; \ 197 if (!ShouldCreate) \ 198 return nullptr; \ 199 } else { \ 200 assert(ShouldCreate && \ 201 "Expected non-uniqued nodes to always be created"); \ 202 } \ 203 } while (false) 204 #define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS) \ 205 return storeImpl(new (array_lengthof(OPS)) \ 206 CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS), \ 207 Storage, Context.pImpl->CLASS##s) 208 #define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS) \ 209 return storeImpl(new (0u) CLASS(Context, Storage, UNWRAP_ARGS(ARGS)), \ 210 Storage, Context.pImpl->CLASS##s) 211 #define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS) \ 212 return storeImpl(new (array_lengthof(OPS)) CLASS(Context, Storage, OPS), \ 213 Storage, Context.pImpl->CLASS##s) 214 215 DISubrange *DISubrange::getImpl(LLVMContext &Context, int64_t Count, int64_t Lo, 216 StorageType Storage, bool ShouldCreate) { 217 DEFINE_GETIMPL_LOOKUP(DISubrange, (Count, Lo)); 218 DEFINE_GETIMPL_STORE_NO_OPS(DISubrange, (Count, Lo)); 219 } 220 221 DIEnumerator *DIEnumerator::getImpl(LLVMContext &Context, int64_t Value, 222 MDString *Name, StorageType Storage, 223 bool ShouldCreate) { 224 assert(isCanonical(Name) && "Expected canonical MDString"); 225 DEFINE_GETIMPL_LOOKUP(DIEnumerator, (Value, Name)); 226 Metadata *Ops[] = {Name}; 227 DEFINE_GETIMPL_STORE(DIEnumerator, (Value), Ops); 228 } 229 230 DIBasicType *DIBasicType::getImpl(LLVMContext &Context, unsigned Tag, 231 MDString *Name, uint64_t SizeInBits, 232 uint64_t AlignInBits, unsigned Encoding, 233 StorageType Storage, bool ShouldCreate) { 234 assert(isCanonical(Name) && "Expected canonical MDString"); 235 DEFINE_GETIMPL_LOOKUP(DIBasicType, 236 (Tag, Name, SizeInBits, AlignInBits, Encoding)); 237 Metadata *Ops[] = {nullptr, nullptr, Name}; 238 DEFINE_GETIMPL_STORE(DIBasicType, (Tag, SizeInBits, AlignInBits, Encoding), 239 Ops); 240 } 241 242 DIDerivedType *DIDerivedType::getImpl( 243 LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File, 244 unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits, 245 uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags, 246 Metadata *ExtraData, StorageType Storage, bool ShouldCreate) { 247 assert(isCanonical(Name) && "Expected canonical MDString"); 248 DEFINE_GETIMPL_LOOKUP(DIDerivedType, 249 (Tag, Name, File, Line, Scope, BaseType, SizeInBits, 250 AlignInBits, OffsetInBits, Flags, ExtraData)); 251 Metadata *Ops[] = {File, Scope, Name, BaseType, ExtraData}; 252 DEFINE_GETIMPL_STORE( 253 DIDerivedType, (Tag, Line, SizeInBits, AlignInBits, OffsetInBits, Flags), 254 Ops); 255 } 256 257 DICompositeType *DICompositeType::getImpl( 258 LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File, 259 unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits, 260 uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags, 261 Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder, 262 Metadata *TemplateParams, MDString *Identifier, StorageType Storage, 263 bool ShouldCreate) { 264 assert(isCanonical(Name) && "Expected canonical MDString"); 265 266 // Keep this in sync with buildODRType. 267 DEFINE_GETIMPL_LOOKUP( 268 DICompositeType, (Tag, Name, File, Line, Scope, BaseType, SizeInBits, 269 AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang, 270 VTableHolder, TemplateParams, Identifier)); 271 Metadata *Ops[] = {File, Scope, Name, BaseType, 272 Elements, VTableHolder, TemplateParams, Identifier}; 273 DEFINE_GETIMPL_STORE(DICompositeType, (Tag, Line, RuntimeLang, SizeInBits, 274 AlignInBits, OffsetInBits, Flags), 275 Ops); 276 } 277 278 DICompositeType *DICompositeType::buildODRType( 279 LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name, 280 Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType, 281 uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits, 282 unsigned Flags, Metadata *Elements, unsigned RuntimeLang, 283 Metadata *VTableHolder, Metadata *TemplateParams) { 284 assert(!Identifier.getString().empty() && "Expected valid identifier"); 285 if (!Context.isODRUniquingDebugTypes()) 286 return nullptr; 287 auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier]; 288 if (!CT) 289 return CT = DICompositeType::getDistinct( 290 Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits, 291 AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang, 292 VTableHolder, TemplateParams, &Identifier); 293 294 // Only mutate CT if it's a forward declaration and the new operands aren't. 295 assert(CT->getRawIdentifier() == &Identifier && "Wrong ODR identifier?"); 296 if (!CT->isForwardDecl() || (Flags & DINode::FlagFwdDecl)) 297 return CT; 298 299 // Mutate CT in place. Keep this in sync with getImpl. 300 CT->mutate(Tag, Line, RuntimeLang, SizeInBits, AlignInBits, OffsetInBits, 301 Flags); 302 Metadata *Ops[] = {File, Scope, Name, BaseType, 303 Elements, VTableHolder, TemplateParams, &Identifier}; 304 assert((std::end(Ops) - std::begin(Ops)) == (int)CT->getNumOperands() && 305 "Mismatched number of operands"); 306 for (unsigned I = 0, E = CT->getNumOperands(); I != E; ++I) 307 if (Ops[I] != CT->getOperand(I)) 308 CT->setOperand(I, Ops[I]); 309 return CT; 310 } 311 312 DICompositeType *DICompositeType::getODRType( 313 LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name, 314 Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType, 315 uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits, 316 unsigned Flags, Metadata *Elements, unsigned RuntimeLang, 317 Metadata *VTableHolder, Metadata *TemplateParams) { 318 assert(!Identifier.getString().empty() && "Expected valid identifier"); 319 if (!Context.isODRUniquingDebugTypes()) 320 return nullptr; 321 auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier]; 322 if (!CT) 323 CT = DICompositeType::getDistinct( 324 Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits, 325 AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang, VTableHolder, 326 TemplateParams, &Identifier); 327 return CT; 328 } 329 330 DICompositeType *DICompositeType::getODRTypeIfExists(LLVMContext &Context, 331 MDString &Identifier) { 332 assert(!Identifier.getString().empty() && "Expected valid identifier"); 333 if (!Context.isODRUniquingDebugTypes()) 334 return nullptr; 335 return Context.pImpl->DITypeMap->lookup(&Identifier); 336 } 337 338 DISubroutineType *DISubroutineType::getImpl(LLVMContext &Context, 339 unsigned Flags, uint8_t CC, 340 Metadata *TypeArray, 341 StorageType Storage, 342 bool ShouldCreate) { 343 DEFINE_GETIMPL_LOOKUP(DISubroutineType, (Flags, CC, TypeArray)); 344 Metadata *Ops[] = {nullptr, nullptr, nullptr, TypeArray}; 345 DEFINE_GETIMPL_STORE(DISubroutineType, (Flags, CC), Ops); 346 } 347 348 DIFile *DIFile::getImpl(LLVMContext &Context, MDString *Filename, 349 MDString *Directory, StorageType Storage, 350 bool ShouldCreate) { 351 assert(isCanonical(Filename) && "Expected canonical MDString"); 352 assert(isCanonical(Directory) && "Expected canonical MDString"); 353 DEFINE_GETIMPL_LOOKUP(DIFile, (Filename, Directory)); 354 Metadata *Ops[] = {Filename, Directory}; 355 DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIFile, Ops); 356 } 357 358 DICompileUnit *DICompileUnit::getImpl( 359 LLVMContext &Context, unsigned SourceLanguage, Metadata *File, 360 MDString *Producer, bool IsOptimized, MDString *Flags, 361 unsigned RuntimeVersion, MDString *SplitDebugFilename, 362 unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes, 363 Metadata *GlobalVariables, Metadata *ImportedEntities, Metadata *Macros, 364 uint64_t DWOId, StorageType Storage, bool ShouldCreate) { 365 assert(Storage != Uniqued && "Cannot unique DICompileUnit"); 366 assert(isCanonical(Producer) && "Expected canonical MDString"); 367 assert(isCanonical(Flags) && "Expected canonical MDString"); 368 assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString"); 369 370 Metadata *Ops[] = { 371 File, Producer, Flags, SplitDebugFilename, 372 EnumTypes, RetainedTypes, GlobalVariables, ImportedEntities, 373 Macros}; 374 return storeImpl(new (array_lengthof(Ops)) DICompileUnit( 375 Context, Storage, SourceLanguage, IsOptimized, 376 RuntimeVersion, EmissionKind, DWOId, Ops), 377 Storage); 378 } 379 380 Optional<DICompileUnit::DebugEmissionKind> 381 DICompileUnit::getEmissionKind(StringRef Str) { 382 return StringSwitch<Optional<DebugEmissionKind>>(Str) 383 .Case("NoDebug", NoDebug) 384 .Case("FullDebug", FullDebug) 385 .Case("LineTablesOnly", LineTablesOnly) 386 .Default(None); 387 } 388 389 const char *DICompileUnit::EmissionKindString(DebugEmissionKind EK) { 390 switch (EK) { 391 case NoDebug: return "NoDebug"; 392 case FullDebug: return "FullDebug"; 393 case LineTablesOnly: return "LineTablesOnly"; 394 } 395 return nullptr; 396 } 397 398 DISubprogram *DILocalScope::getSubprogram() const { 399 if (auto *Block = dyn_cast<DILexicalBlockBase>(this)) 400 return Block->getScope()->getSubprogram(); 401 return const_cast<DISubprogram *>(cast<DISubprogram>(this)); 402 } 403 404 DILocalScope *DILocalScope::getNonLexicalBlockFileScope() const { 405 if (auto *File = dyn_cast<DILexicalBlockFile>(this)) 406 return File->getScope()->getNonLexicalBlockFileScope(); 407 return const_cast<DILocalScope *>(this); 408 } 409 410 DISubprogram *DISubprogram::getImpl( 411 LLVMContext &Context, Metadata *Scope, MDString *Name, 412 MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type, 413 bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine, 414 Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex, 415 int ThisAdjustment, unsigned Flags, bool IsOptimized, Metadata *Unit, 416 Metadata *TemplateParams, Metadata *Declaration, Metadata *Variables, 417 StorageType Storage, bool ShouldCreate) { 418 assert(isCanonical(Name) && "Expected canonical MDString"); 419 assert(isCanonical(LinkageName) && "Expected canonical MDString"); 420 DEFINE_GETIMPL_LOOKUP( 421 DISubprogram, 422 (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit, IsDefinition, 423 ScopeLine, ContainingType, Virtuality, VirtualIndex, ThisAdjustment, 424 Flags, IsOptimized, Unit, TemplateParams, Declaration, Variables)); 425 Metadata *Ops[] = {File, Scope, Name, Name, 426 LinkageName, Type, ContainingType, Unit, 427 TemplateParams, Declaration, Variables}; 428 DEFINE_GETIMPL_STORE(DISubprogram, (Line, ScopeLine, Virtuality, VirtualIndex, 429 ThisAdjustment, Flags, IsLocalToUnit, 430 IsDefinition, IsOptimized), 431 Ops); 432 } 433 434 bool DISubprogram::describes(const Function *F) const { 435 assert(F && "Invalid function"); 436 if (F->getSubprogram() == this) 437 return true; 438 StringRef Name = getLinkageName(); 439 if (Name.empty()) 440 Name = getName(); 441 return F->getName() == Name; 442 } 443 444 DILexicalBlock *DILexicalBlock::getImpl(LLVMContext &Context, Metadata *Scope, 445 Metadata *File, unsigned Line, 446 unsigned Column, StorageType Storage, 447 bool ShouldCreate) { 448 // Fixup column. 449 adjustColumn(Column); 450 451 assert(Scope && "Expected scope"); 452 DEFINE_GETIMPL_LOOKUP(DILexicalBlock, (Scope, File, Line, Column)); 453 Metadata *Ops[] = {File, Scope}; 454 DEFINE_GETIMPL_STORE(DILexicalBlock, (Line, Column), Ops); 455 } 456 457 DILexicalBlockFile *DILexicalBlockFile::getImpl(LLVMContext &Context, 458 Metadata *Scope, Metadata *File, 459 unsigned Discriminator, 460 StorageType Storage, 461 bool ShouldCreate) { 462 assert(Scope && "Expected scope"); 463 DEFINE_GETIMPL_LOOKUP(DILexicalBlockFile, (Scope, File, Discriminator)); 464 Metadata *Ops[] = {File, Scope}; 465 DEFINE_GETIMPL_STORE(DILexicalBlockFile, (Discriminator), Ops); 466 } 467 468 DINamespace *DINamespace::getImpl(LLVMContext &Context, Metadata *Scope, 469 Metadata *File, MDString *Name, unsigned Line, 470 StorageType Storage, bool ShouldCreate) { 471 assert(isCanonical(Name) && "Expected canonical MDString"); 472 DEFINE_GETIMPL_LOOKUP(DINamespace, (Scope, File, Name, Line)); 473 Metadata *Ops[] = {File, Scope, Name}; 474 DEFINE_GETIMPL_STORE(DINamespace, (Line), Ops); 475 } 476 477 DIModule *DIModule::getImpl(LLVMContext &Context, Metadata *Scope, 478 MDString *Name, MDString *ConfigurationMacros, 479 MDString *IncludePath, MDString *ISysRoot, 480 StorageType Storage, bool ShouldCreate) { 481 assert(isCanonical(Name) && "Expected canonical MDString"); 482 DEFINE_GETIMPL_LOOKUP( 483 DIModule, (Scope, Name, ConfigurationMacros, IncludePath, ISysRoot)); 484 Metadata *Ops[] = {Scope, Name, ConfigurationMacros, IncludePath, ISysRoot}; 485 DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIModule, Ops); 486 } 487 488 DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context, 489 MDString *Name, 490 Metadata *Type, 491 StorageType Storage, 492 bool ShouldCreate) { 493 assert(isCanonical(Name) && "Expected canonical MDString"); 494 DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (Name, Type)); 495 Metadata *Ops[] = {Name, Type}; 496 DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DITemplateTypeParameter, Ops); 497 } 498 499 DITemplateValueParameter *DITemplateValueParameter::getImpl( 500 LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type, 501 Metadata *Value, StorageType Storage, bool ShouldCreate) { 502 assert(isCanonical(Name) && "Expected canonical MDString"); 503 DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter, (Tag, Name, Type, Value)); 504 Metadata *Ops[] = {Name, Type, Value}; 505 DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops); 506 } 507 508 DIGlobalVariable * 509 DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name, 510 MDString *LinkageName, Metadata *File, unsigned Line, 511 Metadata *Type, bool IsLocalToUnit, bool IsDefinition, 512 Metadata *Variable, 513 Metadata *StaticDataMemberDeclaration, 514 StorageType Storage, bool ShouldCreate) { 515 assert(isCanonical(Name) && "Expected canonical MDString"); 516 assert(isCanonical(LinkageName) && "Expected canonical MDString"); 517 DEFINE_GETIMPL_LOOKUP(DIGlobalVariable, 518 (Scope, Name, LinkageName, File, Line, Type, 519 IsLocalToUnit, IsDefinition, Variable, 520 StaticDataMemberDeclaration)); 521 Metadata *Ops[] = {Scope, Name, File, Type, 522 Name, LinkageName, Variable, StaticDataMemberDeclaration}; 523 DEFINE_GETIMPL_STORE(DIGlobalVariable, (Line, IsLocalToUnit, IsDefinition), 524 Ops); 525 } 526 527 DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, Metadata *Scope, 528 MDString *Name, Metadata *File, 529 unsigned Line, Metadata *Type, 530 unsigned Arg, unsigned Flags, 531 StorageType Storage, 532 bool ShouldCreate) { 533 // 64K ought to be enough for any frontend. 534 assert(Arg <= UINT16_MAX && "Expected argument number to fit in 16-bits"); 535 536 assert(Scope && "Expected scope"); 537 assert(isCanonical(Name) && "Expected canonical MDString"); 538 DEFINE_GETIMPL_LOOKUP(DILocalVariable, 539 (Scope, Name, File, Line, Type, Arg, Flags)); 540 Metadata *Ops[] = {Scope, Name, File, Type}; 541 DEFINE_GETIMPL_STORE(DILocalVariable, (Line, Arg, Flags), Ops); 542 } 543 544 DIExpression *DIExpression::getImpl(LLVMContext &Context, 545 ArrayRef<uint64_t> Elements, 546 StorageType Storage, bool ShouldCreate) { 547 DEFINE_GETIMPL_LOOKUP(DIExpression, (Elements)); 548 DEFINE_GETIMPL_STORE_NO_OPS(DIExpression, (Elements)); 549 } 550 551 unsigned DIExpression::ExprOperand::getSize() const { 552 switch (getOp()) { 553 case dwarf::DW_OP_bit_piece: 554 return 3; 555 case dwarf::DW_OP_plus: 556 case dwarf::DW_OP_minus: 557 return 2; 558 default: 559 return 1; 560 } 561 } 562 563 bool DIExpression::isValid() const { 564 for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) { 565 // Check that there's space for the operand. 566 if (I->get() + I->getSize() > E->get()) 567 return false; 568 569 // Check that the operand is valid. 570 switch (I->getOp()) { 571 default: 572 return false; 573 case dwarf::DW_OP_bit_piece: 574 // Piece expressions must be at the end. 575 return I->get() + I->getSize() == E->get(); 576 case dwarf::DW_OP_plus: 577 case dwarf::DW_OP_minus: 578 case dwarf::DW_OP_deref: 579 break; 580 } 581 } 582 return true; 583 } 584 585 bool DIExpression::isBitPiece() const { 586 assert(isValid() && "Expected valid expression"); 587 if (unsigned N = getNumElements()) 588 if (N >= 3) 589 return getElement(N - 3) == dwarf::DW_OP_bit_piece; 590 return false; 591 } 592 593 uint64_t DIExpression::getBitPieceOffset() const { 594 assert(isBitPiece() && "Expected bit piece"); 595 return getElement(getNumElements() - 2); 596 } 597 598 uint64_t DIExpression::getBitPieceSize() const { 599 assert(isBitPiece() && "Expected bit piece"); 600 return getElement(getNumElements() - 1); 601 } 602 603 DIObjCProperty *DIObjCProperty::getImpl( 604 LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line, 605 MDString *GetterName, MDString *SetterName, unsigned Attributes, 606 Metadata *Type, StorageType Storage, bool ShouldCreate) { 607 assert(isCanonical(Name) && "Expected canonical MDString"); 608 assert(isCanonical(GetterName) && "Expected canonical MDString"); 609 assert(isCanonical(SetterName) && "Expected canonical MDString"); 610 DEFINE_GETIMPL_LOOKUP(DIObjCProperty, (Name, File, Line, GetterName, 611 SetterName, Attributes, Type)); 612 Metadata *Ops[] = {Name, File, GetterName, SetterName, Type}; 613 DEFINE_GETIMPL_STORE(DIObjCProperty, (Line, Attributes), Ops); 614 } 615 616 DIImportedEntity *DIImportedEntity::getImpl(LLVMContext &Context, unsigned Tag, 617 Metadata *Scope, Metadata *Entity, 618 unsigned Line, MDString *Name, 619 StorageType Storage, 620 bool ShouldCreate) { 621 assert(isCanonical(Name) && "Expected canonical MDString"); 622 DEFINE_GETIMPL_LOOKUP(DIImportedEntity, (Tag, Scope, Entity, Line, Name)); 623 Metadata *Ops[] = {Scope, Entity, Name}; 624 DEFINE_GETIMPL_STORE(DIImportedEntity, (Tag, Line), Ops); 625 } 626 627 DIMacro *DIMacro::getImpl(LLVMContext &Context, unsigned MIType, 628 unsigned Line, MDString *Name, MDString *Value, 629 StorageType Storage, bool ShouldCreate) { 630 assert(isCanonical(Name) && "Expected canonical MDString"); 631 DEFINE_GETIMPL_LOOKUP(DIMacro, (MIType, Line, Name, Value)); 632 Metadata *Ops[] = { Name, Value }; 633 DEFINE_GETIMPL_STORE(DIMacro, (MIType, Line), Ops); 634 } 635 636 DIMacroFile *DIMacroFile::getImpl(LLVMContext &Context, unsigned MIType, 637 unsigned Line, Metadata *File, 638 Metadata *Elements, StorageType Storage, 639 bool ShouldCreate) { 640 DEFINE_GETIMPL_LOOKUP(DIMacroFile, 641 (MIType, Line, File, Elements)); 642 Metadata *Ops[] = { File, Elements }; 643 DEFINE_GETIMPL_STORE(DIMacroFile, (MIType, Line), Ops); 644 } 645 646
