1 //===- DebugInfoMetadata.cpp - Implement debug info metadata --------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the debug info Metadata classes.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/IR/DebugInfoMetadata.h"
15 #include "LLVMContextImpl.h"
16 #include "MetadataImpl.h"
17 #include "llvm/ADT/StringSwitch.h"
18 #include "llvm/IR/DIBuilder.h"
19 #include "llvm/IR/Function.h"
23 DILocation::DILocation(LLVMContext &C, StorageType Storage, unsigned Line,
24 unsigned Column, ArrayRef<Metadata *> MDs)
25 : MDNode(C, DILocationKind, Storage, MDs) {
26 assert((MDs.size() == 1 || MDs.size() == 2) &&
27 "Expected a scope and optional inlined-at");
29 // Set line and column.
30 assert(Column < (1u << 16) && "Expected 16-bit column");
32 SubclassData32 = Line;
33 SubclassData16 = Column;
36 static void adjustColumn(unsigned &Column) {
37 // Set to unknown on overflow. We only have 16 bits to play with here.
38 if (Column >= (1u << 16))
42 DILocation *DILocation::getImpl(LLVMContext &Context, unsigned Line,
43 unsigned Column, Metadata *Scope,
44 Metadata *InlinedAt, StorageType Storage,
49 if (Storage == Uniqued) {
51 getUniqued(Context.pImpl->DILocations,
52 DILocationInfo::KeyTy(Line, Column, Scope, InlinedAt)))
57 assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
60 SmallVector<Metadata *, 2> Ops;
63 Ops.push_back(InlinedAt);
64 return storeImpl(new (Ops.size())
65 DILocation(Context, Storage, Line, Column, Ops),
66 Storage, Context.pImpl->DILocations);
69 DINode::DIFlags DINode::getFlag(StringRef Flag) {
70 return StringSwitch<DIFlags>(Flag)
71 #define HANDLE_DI_FLAG(ID, NAME) .Case("DIFlag" #NAME, Flag##NAME)
72 #include "llvm/IR/DebugInfoFlags.def"
73 .Default(DINode::FlagZero);
76 StringRef DINode::getFlagString(DIFlags Flag) {
78 #define HANDLE_DI_FLAG(ID, NAME) \
80 return "DIFlag" #NAME;
81 #include "llvm/IR/DebugInfoFlags.def"
86 DINode::DIFlags DINode::splitFlags(DIFlags Flags,
87 SmallVectorImpl<DIFlags> &SplitFlags) {
88 // Flags that are packed together need to be specially handled, so
89 // that, for example, we emit "DIFlagPublic" and not
90 // "DIFlagPrivate | DIFlagProtected".
91 if (DIFlags A = Flags & FlagAccessibility) {
93 SplitFlags.push_back(FlagPrivate);
94 else if (A == FlagProtected)
95 SplitFlags.push_back(FlagProtected);
97 SplitFlags.push_back(FlagPublic);
100 if (DIFlags R = Flags & FlagPtrToMemberRep) {
101 if (R == FlagSingleInheritance)
102 SplitFlags.push_back(FlagSingleInheritance);
103 else if (R == FlagMultipleInheritance)
104 SplitFlags.push_back(FlagMultipleInheritance);
106 SplitFlags.push_back(FlagVirtualInheritance);
109 if ((Flags & FlagIndirectVirtualBase) == FlagIndirectVirtualBase) {
110 Flags &= ~FlagIndirectVirtualBase;
111 SplitFlags.push_back(FlagIndirectVirtualBase);
114 #define HANDLE_DI_FLAG(ID, NAME) \
115 if (DIFlags Bit = Flags & Flag##NAME) { \
116 SplitFlags.push_back(Bit); \
119 #include "llvm/IR/DebugInfoFlags.def"
123 DIScopeRef DIScope::getScope() const {
124 if (auto *T = dyn_cast<DIType>(this))
125 return T->getScope();
127 if (auto *SP = dyn_cast<DISubprogram>(this))
128 return SP->getScope();
130 if (auto *LB = dyn_cast<DILexicalBlockBase>(this))
131 return LB->getScope();
133 if (auto *NS = dyn_cast<DINamespace>(this))
134 return NS->getScope();
136 if (auto *M = dyn_cast<DIModule>(this))
137 return M->getScope();
139 assert((isa<DIFile>(this) || isa<DICompileUnit>(this)) &&
140 "Unhandled type of scope.");
144 StringRef DIScope::getName() const {
145 if (auto *T = dyn_cast<DIType>(this))
147 if (auto *SP = dyn_cast<DISubprogram>(this))
148 return SP->getName();
149 if (auto *NS = dyn_cast<DINamespace>(this))
150 return NS->getName();
151 if (auto *M = dyn_cast<DIModule>(this))
153 assert((isa<DILexicalBlockBase>(this) || isa<DIFile>(this) ||
154 isa<DICompileUnit>(this)) &&
155 "Unhandled type of scope.");
160 static bool isCanonical(const MDString *S) {
161 return !S || !S->getString().empty();
165 GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag,
167 ArrayRef<Metadata *> DwarfOps,
168 StorageType Storage, bool ShouldCreate) {
170 if (Storage == Uniqued) {
171 GenericDINodeInfo::KeyTy Key(Tag, Header, DwarfOps);
172 if (auto *N = getUniqued(Context.pImpl->GenericDINodes, Key))
176 Hash = Key.getHash();
178 assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
181 // Use a nullptr for empty headers.
182 assert(isCanonical(Header) && "Expected canonical MDString");
183 Metadata *PreOps[] = {Header};
184 return storeImpl(new (DwarfOps.size() + 1) GenericDINode(
185 Context, Storage, Hash, Tag, PreOps, DwarfOps),
186 Storage, Context.pImpl->GenericDINodes);
189 void GenericDINode::recalculateHash() {
190 setHash(GenericDINodeInfo::KeyTy::calculateHash(this));
193 #define UNWRAP_ARGS_IMPL(...) __VA_ARGS__
194 #define UNWRAP_ARGS(ARGS) UNWRAP_ARGS_IMPL ARGS
195 #define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS) \
197 if (Storage == Uniqued) { \
198 if (auto *N = getUniqued(Context.pImpl->CLASS##s, \
199 CLASS##Info::KeyTy(UNWRAP_ARGS(ARGS)))) \
204 assert(ShouldCreate && \
205 "Expected non-uniqued nodes to always be created"); \
208 #define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS) \
209 return storeImpl(new (array_lengthof(OPS)) \
210 CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS), \
211 Storage, Context.pImpl->CLASS##s)
212 #define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS) \
213 return storeImpl(new (0u) CLASS(Context, Storage, UNWRAP_ARGS(ARGS)), \
214 Storage, Context.pImpl->CLASS##s)
215 #define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS) \
216 return storeImpl(new (array_lengthof(OPS)) CLASS(Context, Storage, OPS), \
217 Storage, Context.pImpl->CLASS##s)
218 #define DEFINE_GETIMPL_STORE_N(CLASS, ARGS, OPS, NUM_OPS) \
219 return storeImpl(new (NUM_OPS) \
220 CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS), \
221 Storage, Context.pImpl->CLASS##s)
223 DISubrange *DISubrange::getImpl(LLVMContext &Context, int64_t Count, int64_t Lo,
224 StorageType Storage, bool ShouldCreate) {
225 DEFINE_GETIMPL_LOOKUP(DISubrange, (Count, Lo));
226 DEFINE_GETIMPL_STORE_NO_OPS(DISubrange, (Count, Lo));
229 DIEnumerator *DIEnumerator::getImpl(LLVMContext &Context, int64_t Value,
230 MDString *Name, StorageType Storage,
232 assert(isCanonical(Name) && "Expected canonical MDString");
233 DEFINE_GETIMPL_LOOKUP(DIEnumerator, (Value, Name));
234 Metadata *Ops[] = {Name};
235 DEFINE_GETIMPL_STORE(DIEnumerator, (Value), Ops);
238 DIBasicType *DIBasicType::getImpl(LLVMContext &Context, unsigned Tag,
239 MDString *Name, uint64_t SizeInBits,
240 uint32_t AlignInBits, unsigned Encoding,
241 StorageType Storage, bool ShouldCreate) {
242 assert(isCanonical(Name) && "Expected canonical MDString");
243 DEFINE_GETIMPL_LOOKUP(DIBasicType,
244 (Tag, Name, SizeInBits, AlignInBits, Encoding));
245 Metadata *Ops[] = {nullptr, nullptr, Name};
246 DEFINE_GETIMPL_STORE(DIBasicType, (Tag, SizeInBits, AlignInBits, Encoding),
250 DIDerivedType *DIDerivedType::getImpl(
251 LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
252 unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
253 uint32_t AlignInBits, uint64_t OffsetInBits,
254 Optional<unsigned> DWARFAddressSpace, DIFlags Flags, Metadata *ExtraData,
255 StorageType Storage, bool ShouldCreate) {
256 assert(isCanonical(Name) && "Expected canonical MDString");
257 DEFINE_GETIMPL_LOOKUP(DIDerivedType,
258 (Tag, Name, File, Line, Scope, BaseType, SizeInBits,
259 AlignInBits, OffsetInBits, DWARFAddressSpace, Flags,
261 Metadata *Ops[] = {File, Scope, Name, BaseType, ExtraData};
262 DEFINE_GETIMPL_STORE(
263 DIDerivedType, (Tag, Line, SizeInBits, AlignInBits, OffsetInBits,
264 DWARFAddressSpace, Flags), Ops);
267 DICompositeType *DICompositeType::getImpl(
268 LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
269 unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
270 uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags,
271 Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder,
272 Metadata *TemplateParams, MDString *Identifier, StorageType Storage,
274 assert(isCanonical(Name) && "Expected canonical MDString");
276 // Keep this in sync with buildODRType.
277 DEFINE_GETIMPL_LOOKUP(
278 DICompositeType, (Tag, Name, File, Line, Scope, BaseType, SizeInBits,
279 AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
280 VTableHolder, TemplateParams, Identifier));
281 Metadata *Ops[] = {File, Scope, Name, BaseType,
282 Elements, VTableHolder, TemplateParams, Identifier};
283 DEFINE_GETIMPL_STORE(DICompositeType, (Tag, Line, RuntimeLang, SizeInBits,
284 AlignInBits, OffsetInBits, Flags),
288 DICompositeType *DICompositeType::buildODRType(
289 LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name,
290 Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType,
291 uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits,
292 DIFlags Flags, Metadata *Elements, unsigned RuntimeLang,
293 Metadata *VTableHolder, Metadata *TemplateParams) {
294 assert(!Identifier.getString().empty() && "Expected valid identifier");
295 if (!Context.isODRUniquingDebugTypes())
297 auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier];
299 return CT = DICompositeType::getDistinct(
300 Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
301 AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
302 VTableHolder, TemplateParams, &Identifier);
304 // Only mutate CT if it's a forward declaration and the new operands aren't.
305 assert(CT->getRawIdentifier() == &Identifier && "Wrong ODR identifier?");
306 if (!CT->isForwardDecl() || (Flags & DINode::FlagFwdDecl))
309 // Mutate CT in place. Keep this in sync with getImpl.
310 CT->mutate(Tag, Line, RuntimeLang, SizeInBits, AlignInBits, OffsetInBits,
312 Metadata *Ops[] = {File, Scope, Name, BaseType,
313 Elements, VTableHolder, TemplateParams, &Identifier};
314 assert((std::end(Ops) - std::begin(Ops)) == (int)CT->getNumOperands() &&
315 "Mismatched number of operands");
316 for (unsigned I = 0, E = CT->getNumOperands(); I != E; ++I)
317 if (Ops[I] != CT->getOperand(I))
318 CT->setOperand(I, Ops[I]);
322 DICompositeType *DICompositeType::getODRType(
323 LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name,
324 Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType,
325 uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits,
326 DIFlags Flags, Metadata *Elements, unsigned RuntimeLang,
327 Metadata *VTableHolder, Metadata *TemplateParams) {
328 assert(!Identifier.getString().empty() && "Expected valid identifier");
329 if (!Context.isODRUniquingDebugTypes())
331 auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier];
333 CT = DICompositeType::getDistinct(
334 Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
335 AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang, VTableHolder,
336 TemplateParams, &Identifier);
340 DICompositeType *DICompositeType::getODRTypeIfExists(LLVMContext &Context,
341 MDString &Identifier) {
342 assert(!Identifier.getString().empty() && "Expected valid identifier");
343 if (!Context.isODRUniquingDebugTypes())
345 return Context.pImpl->DITypeMap->lookup(&Identifier);
348 DISubroutineType *DISubroutineType::getImpl(LLVMContext &Context, DIFlags Flags,
349 uint8_t CC, Metadata *TypeArray,
352 DEFINE_GETIMPL_LOOKUP(DISubroutineType, (Flags, CC, TypeArray));
353 Metadata *Ops[] = {nullptr, nullptr, nullptr, TypeArray};
354 DEFINE_GETIMPL_STORE(DISubroutineType, (Flags, CC), Ops);
357 static const char *ChecksumKindName[DIFile::CSK_Last + 1] = {
363 DIFile::ChecksumKind DIFile::getChecksumKind(StringRef CSKindStr) {
364 return StringSwitch<DIFile::ChecksumKind>(CSKindStr)
365 .Case("CSK_MD5", DIFile::CSK_MD5)
366 .Case("CSK_SHA1", DIFile::CSK_SHA1)
367 .Default(DIFile::CSK_None);
370 StringRef DIFile::getChecksumKindAsString() const {
371 assert(CSKind <= DIFile::CSK_Last && "Invalid checksum kind");
372 return ChecksumKindName[CSKind];
375 DIFile *DIFile::getImpl(LLVMContext &Context, MDString *Filename,
376 MDString *Directory, DIFile::ChecksumKind CSKind,
377 MDString *Checksum, StorageType Storage,
379 assert(isCanonical(Filename) && "Expected canonical MDString");
380 assert(isCanonical(Directory) && "Expected canonical MDString");
381 assert(isCanonical(Checksum) && "Expected canonical MDString");
382 DEFINE_GETIMPL_LOOKUP(DIFile, (Filename, Directory, CSKind, Checksum));
383 Metadata *Ops[] = {Filename, Directory, Checksum};
384 DEFINE_GETIMPL_STORE(DIFile, (CSKind), Ops);
387 DICompileUnit *DICompileUnit::getImpl(
388 LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
389 MDString *Producer, bool IsOptimized, MDString *Flags,
390 unsigned RuntimeVersion, MDString *SplitDebugFilename,
391 unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
392 Metadata *GlobalVariables, Metadata *ImportedEntities, Metadata *Macros,
393 uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling,
394 StorageType Storage, bool ShouldCreate) {
395 assert(Storage != Uniqued && "Cannot unique DICompileUnit");
396 assert(isCanonical(Producer) && "Expected canonical MDString");
397 assert(isCanonical(Flags) && "Expected canonical MDString");
398 assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString");
401 File, Producer, Flags, SplitDebugFilename,
402 EnumTypes, RetainedTypes, GlobalVariables, ImportedEntities,
404 return storeImpl(new (array_lengthof(Ops))
405 DICompileUnit(Context, Storage, SourceLanguage,
406 IsOptimized, RuntimeVersion, EmissionKind,
407 DWOId, SplitDebugInlining,
408 DebugInfoForProfiling, Ops),
412 Optional<DICompileUnit::DebugEmissionKind>
413 DICompileUnit::getEmissionKind(StringRef Str) {
414 return StringSwitch<Optional<DebugEmissionKind>>(Str)
415 .Case("NoDebug", NoDebug)
416 .Case("FullDebug", FullDebug)
417 .Case("LineTablesOnly", LineTablesOnly)
421 const char *DICompileUnit::EmissionKindString(DebugEmissionKind EK) {
423 case NoDebug: return "NoDebug";
424 case FullDebug: return "FullDebug";
425 case LineTablesOnly: return "LineTablesOnly";
430 DISubprogram *DILocalScope::getSubprogram() const {
431 if (auto *Block = dyn_cast<DILexicalBlockBase>(this))
432 return Block->getScope()->getSubprogram();
433 return const_cast<DISubprogram *>(cast<DISubprogram>(this));
436 DILocalScope *DILocalScope::getNonLexicalBlockFileScope() const {
437 if (auto *File = dyn_cast<DILexicalBlockFile>(this))
438 return File->getScope()->getNonLexicalBlockFileScope();
439 return const_cast<DILocalScope *>(this);
442 DISubprogram *DISubprogram::getImpl(
443 LLVMContext &Context, Metadata *Scope, MDString *Name,
444 MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
445 bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
446 Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex,
447 int ThisAdjustment, DIFlags Flags, bool IsOptimized, Metadata *Unit,
448 Metadata *TemplateParams, Metadata *Declaration, Metadata *Variables,
449 Metadata *ThrownTypes, StorageType Storage, bool ShouldCreate) {
450 assert(isCanonical(Name) && "Expected canonical MDString");
451 assert(isCanonical(LinkageName) && "Expected canonical MDString");
452 DEFINE_GETIMPL_LOOKUP(
453 DISubprogram, (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit,
454 IsDefinition, ScopeLine, ContainingType, Virtuality,
455 VirtualIndex, ThisAdjustment, Flags, IsOptimized, Unit,
456 TemplateParams, Declaration, Variables, ThrownTypes));
457 SmallVector<Metadata *, 11> Ops = {
458 File, Scope, Name, LinkageName, Type, Unit,
459 Declaration, Variables, ContainingType, TemplateParams, ThrownTypes};
462 if (!TemplateParams) {
468 DEFINE_GETIMPL_STORE_N(DISubprogram,
469 (Line, ScopeLine, Virtuality, VirtualIndex,
470 ThisAdjustment, Flags, IsLocalToUnit, IsDefinition,
475 bool DISubprogram::describes(const Function *F) const {
476 assert(F && "Invalid function");
477 if (F->getSubprogram() == this)
479 StringRef Name = getLinkageName();
482 return F->getName() == Name;
485 DILexicalBlock *DILexicalBlock::getImpl(LLVMContext &Context, Metadata *Scope,
486 Metadata *File, unsigned Line,
487 unsigned Column, StorageType Storage,
490 adjustColumn(Column);
492 assert(Scope && "Expected scope");
493 DEFINE_GETIMPL_LOOKUP(DILexicalBlock, (Scope, File, Line, Column));
494 Metadata *Ops[] = {File, Scope};
495 DEFINE_GETIMPL_STORE(DILexicalBlock, (Line, Column), Ops);
498 DILexicalBlockFile *DILexicalBlockFile::getImpl(LLVMContext &Context,
499 Metadata *Scope, Metadata *File,
500 unsigned Discriminator,
503 assert(Scope && "Expected scope");
504 DEFINE_GETIMPL_LOOKUP(DILexicalBlockFile, (Scope, File, Discriminator));
505 Metadata *Ops[] = {File, Scope};
506 DEFINE_GETIMPL_STORE(DILexicalBlockFile, (Discriminator), Ops);
509 DINamespace *DINamespace::getImpl(LLVMContext &Context, Metadata *Scope,
510 MDString *Name, bool ExportSymbols,
511 StorageType Storage, bool ShouldCreate) {
512 assert(isCanonical(Name) && "Expected canonical MDString");
513 DEFINE_GETIMPL_LOOKUP(DINamespace, (Scope, Name, ExportSymbols));
514 // The nullptr is for DIScope's File operand. This should be refactored.
515 Metadata *Ops[] = {nullptr, Scope, Name};
516 DEFINE_GETIMPL_STORE(DINamespace, (ExportSymbols), Ops);
519 DIModule *DIModule::getImpl(LLVMContext &Context, Metadata *Scope,
520 MDString *Name, MDString *ConfigurationMacros,
521 MDString *IncludePath, MDString *ISysRoot,
522 StorageType Storage, bool ShouldCreate) {
523 assert(isCanonical(Name) && "Expected canonical MDString");
524 DEFINE_GETIMPL_LOOKUP(
525 DIModule, (Scope, Name, ConfigurationMacros, IncludePath, ISysRoot));
526 Metadata *Ops[] = {Scope, Name, ConfigurationMacros, IncludePath, ISysRoot};
527 DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIModule, Ops);
530 DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context,
535 assert(isCanonical(Name) && "Expected canonical MDString");
536 DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (Name, Type));
537 Metadata *Ops[] = {Name, Type};
538 DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DITemplateTypeParameter, Ops);
541 DITemplateValueParameter *DITemplateValueParameter::getImpl(
542 LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type,
543 Metadata *Value, StorageType Storage, bool ShouldCreate) {
544 assert(isCanonical(Name) && "Expected canonical MDString");
545 DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter, (Tag, Name, Type, Value));
546 Metadata *Ops[] = {Name, Type, Value};
547 DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops);
551 DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
552 MDString *LinkageName, Metadata *File, unsigned Line,
553 Metadata *Type, bool IsLocalToUnit, bool IsDefinition,
554 Metadata *StaticDataMemberDeclaration,
555 uint32_t AlignInBits, StorageType Storage,
557 assert(isCanonical(Name) && "Expected canonical MDString");
558 assert(isCanonical(LinkageName) && "Expected canonical MDString");
559 DEFINE_GETIMPL_LOOKUP(DIGlobalVariable,
560 (Scope, Name, LinkageName, File, Line, Type,
561 IsLocalToUnit, IsDefinition,
562 StaticDataMemberDeclaration, AlignInBits));
564 Scope, Name, File, Type, Name, LinkageName, StaticDataMemberDeclaration};
565 DEFINE_GETIMPL_STORE(DIGlobalVariable,
566 (Line, IsLocalToUnit, IsDefinition, AlignInBits),
570 DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, Metadata *Scope,
571 MDString *Name, Metadata *File,
572 unsigned Line, Metadata *Type,
573 unsigned Arg, DIFlags Flags,
574 uint32_t AlignInBits,
577 // 64K ought to be enough for any frontend.
578 assert(Arg <= UINT16_MAX && "Expected argument number to fit in 16-bits");
580 assert(Scope && "Expected scope");
581 assert(isCanonical(Name) && "Expected canonical MDString");
582 DEFINE_GETIMPL_LOOKUP(DILocalVariable,
583 (Scope, Name, File, Line, Type, Arg, Flags,
585 Metadata *Ops[] = {Scope, Name, File, Type};
586 DEFINE_GETIMPL_STORE(DILocalVariable, (Line, Arg, Flags, AlignInBits), Ops);
589 DIExpression *DIExpression::getImpl(LLVMContext &Context,
590 ArrayRef<uint64_t> Elements,
591 StorageType Storage, bool ShouldCreate) {
592 DEFINE_GETIMPL_LOOKUP(DIExpression, (Elements));
593 DEFINE_GETIMPL_STORE_NO_OPS(DIExpression, (Elements));
596 unsigned DIExpression::ExprOperand::getSize() const {
598 case dwarf::DW_OP_LLVM_fragment:
600 case dwarf::DW_OP_constu:
601 case dwarf::DW_OP_plus_uconst:
608 bool DIExpression::isValid() const {
609 for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) {
610 // Check that there's space for the operand.
611 if (I->get() + I->getSize() > E->get())
614 // Check that the operand is valid.
615 switch (I->getOp()) {
618 case dwarf::DW_OP_LLVM_fragment:
619 // A fragment operator must appear at the end.
620 return I->get() + I->getSize() == E->get();
621 case dwarf::DW_OP_stack_value: {
622 // Must be the last one or followed by a DW_OP_LLVM_fragment.
623 if (I->get() + I->getSize() == E->get())
626 if ((++J)->getOp() != dwarf::DW_OP_LLVM_fragment)
630 case dwarf::DW_OP_swap: {
631 // Must be more than one implicit element on the stack.
633 // FIXME: A better way to implement this would be to add a local variable
634 // that keeps track of the stack depth and introduce something like a
635 // DW_LLVM_OP_implicit_location as a placeholder for the location this
636 // DIExpression is attached to, or else pass the number of implicit stack
637 // elements into isValid.
638 if (getNumElements() == 1)
642 case dwarf::DW_OP_constu:
643 case dwarf::DW_OP_plus_uconst:
644 case dwarf::DW_OP_plus:
645 case dwarf::DW_OP_minus:
646 case dwarf::DW_OP_deref:
647 case dwarf::DW_OP_xderef:
654 Optional<DIExpression::FragmentInfo>
655 DIExpression::getFragmentInfo(expr_op_iterator Start, expr_op_iterator End) {
656 for (auto I = Start; I != End; ++I)
657 if (I->getOp() == dwarf::DW_OP_LLVM_fragment) {
658 DIExpression::FragmentInfo Info = {I->getArg(1), I->getArg(0)};
664 void DIExpression::appendOffset(SmallVectorImpl<uint64_t> &Ops,
667 Ops.push_back(dwarf::DW_OP_plus_uconst);
668 Ops.push_back(Offset);
669 } else if (Offset < 0) {
670 Ops.push_back(dwarf::DW_OP_constu);
671 Ops.push_back(-Offset);
672 Ops.push_back(dwarf::DW_OP_minus);
676 bool DIExpression::extractIfOffset(int64_t &Offset) const {
677 if (getNumElements() == 0) {
682 if (getNumElements() == 2 && Elements[0] == dwarf::DW_OP_plus_uconst) {
683 Offset = Elements[1];
687 if (getNumElements() == 3 && Elements[0] == dwarf::DW_OP_constu) {
688 if (Elements[2] == dwarf::DW_OP_plus) {
689 Offset = Elements[1];
692 if (Elements[2] == dwarf::DW_OP_minus) {
693 Offset = -Elements[1];
701 DIExpression *DIExpression::prepend(const DIExpression *Expr, bool Deref,
702 int64_t Offset, bool StackValue) {
703 SmallVector<uint64_t, 8> Ops;
704 appendOffset(Ops, Offset);
706 Ops.push_back(dwarf::DW_OP_deref);
708 for (auto Op : Expr->expr_ops()) {
709 // A DW_OP_stack_value comes at the end, but before a DW_OP_LLVM_fragment.
711 if (Op.getOp() == dwarf::DW_OP_stack_value)
713 else if (Op.getOp() == dwarf::DW_OP_LLVM_fragment) {
714 Ops.push_back(dwarf::DW_OP_stack_value);
718 Ops.push_back(Op.getOp());
719 for (unsigned I = 0; I < Op.getNumArgs(); ++I)
720 Ops.push_back(Op.getArg(I));
723 Ops.push_back(dwarf::DW_OP_stack_value);
724 return DIExpression::get(Expr->getContext(), Ops);
727 bool DIExpression::isConstant() const {
728 // Recognize DW_OP_constu C DW_OP_stack_value (DW_OP_LLVM_fragment Len Ofs)?.
729 if (getNumElements() != 3 && getNumElements() != 6)
731 if (getElement(0) != dwarf::DW_OP_constu ||
732 getElement(2) != dwarf::DW_OP_stack_value)
734 if (getNumElements() == 6 && getElement(3) != dwarf::DW_OP_LLVM_fragment)
739 DIGlobalVariableExpression *
740 DIGlobalVariableExpression::getImpl(LLVMContext &Context, Metadata *Variable,
741 Metadata *Expression, StorageType Storage,
743 DEFINE_GETIMPL_LOOKUP(DIGlobalVariableExpression, (Variable, Expression));
744 Metadata *Ops[] = {Variable, Expression};
745 DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIGlobalVariableExpression, Ops);
748 DIObjCProperty *DIObjCProperty::getImpl(
749 LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line,
750 MDString *GetterName, MDString *SetterName, unsigned Attributes,
751 Metadata *Type, StorageType Storage, bool ShouldCreate) {
752 assert(isCanonical(Name) && "Expected canonical MDString");
753 assert(isCanonical(GetterName) && "Expected canonical MDString");
754 assert(isCanonical(SetterName) && "Expected canonical MDString");
755 DEFINE_GETIMPL_LOOKUP(DIObjCProperty, (Name, File, Line, GetterName,
756 SetterName, Attributes, Type));
757 Metadata *Ops[] = {Name, File, GetterName, SetterName, Type};
758 DEFINE_GETIMPL_STORE(DIObjCProperty, (Line, Attributes), Ops);
761 DIImportedEntity *DIImportedEntity::getImpl(LLVMContext &Context, unsigned Tag,
762 Metadata *Scope, Metadata *Entity,
763 Metadata *File, unsigned Line,
764 MDString *Name, StorageType Storage,
766 assert(isCanonical(Name) && "Expected canonical MDString");
767 DEFINE_GETIMPL_LOOKUP(DIImportedEntity,
768 (Tag, Scope, Entity, File, Line, Name));
769 Metadata *Ops[] = {Scope, Entity, Name, File};
770 DEFINE_GETIMPL_STORE(DIImportedEntity, (Tag, Line), Ops);
773 DIMacro *DIMacro::getImpl(LLVMContext &Context, unsigned MIType,
774 unsigned Line, MDString *Name, MDString *Value,
775 StorageType Storage, bool ShouldCreate) {
776 assert(isCanonical(Name) && "Expected canonical MDString");
777 DEFINE_GETIMPL_LOOKUP(DIMacro, (MIType, Line, Name, Value));
778 Metadata *Ops[] = { Name, Value };
779 DEFINE_GETIMPL_STORE(DIMacro, (MIType, Line), Ops);
782 DIMacroFile *DIMacroFile::getImpl(LLVMContext &Context, unsigned MIType,
783 unsigned Line, Metadata *File,
784 Metadata *Elements, StorageType Storage,
786 DEFINE_GETIMPL_LOOKUP(DIMacroFile,
787 (MIType, Line, File, Elements));
788 Metadata *Ops[] = { File, Elements };
789 DEFINE_GETIMPL_STORE(DIMacroFile, (MIType, Line), Ops);