LLVM  8.0.0svn
DebugInfoMetadata.cpp
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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 
15 #include "LLVMContextImpl.h"
16 #include "MetadataImpl.h"
17 #include "llvm/ADT/SmallSet.h"
18 #include "llvm/ADT/StringSwitch.h"
19 #include "llvm/IR/DIBuilder.h"
20 #include "llvm/IR/Function.h"
21 #include "llvm/IR/Instructions.h"
22 
23 using namespace llvm;
24 
25 DILocation::DILocation(LLVMContext &C, StorageType Storage, unsigned Line,
26  unsigned Column, ArrayRef<Metadata *> MDs)
27  : MDNode(C, DILocationKind, Storage, MDs) {
28  assert((MDs.size() == 1 || MDs.size() == 2) &&
29  "Expected a scope and optional inlined-at");
30 
31  // Set line and column.
32  assert(Column < (1u << 16) && "Expected 16-bit column");
33 
34  SubclassData32 = Line;
35  SubclassData16 = Column;
36 }
37 
38 static void adjustColumn(unsigned &Column) {
39  // Set to unknown on overflow. We only have 16 bits to play with here.
40  if (Column >= (1u << 16))
41  Column = 0;
42 }
43 
45  unsigned Column, Metadata *Scope,
46  Metadata *InlinedAt, StorageType Storage,
47  bool ShouldCreate) {
48  // Fixup column.
49  adjustColumn(Column);
50 
51  if (Storage == Uniqued) {
52  if (auto *N =
53  getUniqued(Context.pImpl->DILocations,
54  DILocationInfo::KeyTy(Line, Column, Scope, InlinedAt)))
55  return N;
56  if (!ShouldCreate)
57  return nullptr;
58  } else {
59  assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
60  }
61 
63  Ops.push_back(Scope);
64  if (InlinedAt)
65  Ops.push_back(InlinedAt);
66  return storeImpl(new (Ops.size())
67  DILocation(Context, Storage, Line, Column, Ops),
68  Storage, Context.pImpl->DILocations);
69 }
70 
72  const DILocation *LocB) {
73  if (!LocA || !LocB)
74  return nullptr;
75 
76  if (LocA == LocB)
77  return LocA;
78 
79  SmallPtrSet<DILocation *, 5> InlinedLocationsA;
80  for (DILocation *L = LocA->getInlinedAt(); L; L = L->getInlinedAt())
81  InlinedLocationsA.insert(L);
83  DIScope *S = LocA->getScope();
84  DILocation *L = LocA->getInlinedAt();
85  while (S) {
86  Locations.insert(std::make_pair(S, L));
87  S = S->getScope().resolve();
88  if (!S && L) {
89  S = L->getScope();
90  L = L->getInlinedAt();
91  }
92  }
93  const DILocation *Result = LocB;
94  S = LocB->getScope();
95  L = LocB->getInlinedAt();
96  while (S) {
97  if (Locations.count(std::make_pair(S, L)))
98  break;
99  S = S->getScope().resolve();
100  if (!S && L) {
101  S = L->getScope();
102  L = L->getInlinedAt();
103  }
104  }
105 
106  // If the two locations are irreconsilable, just pick one. This is misleading,
107  // but on the other hand, it's a "line 0" location.
108  if (!S || !isa<DILocalScope>(S))
109  S = LocA->getScope();
110  return DILocation::get(Result->getContext(), 0, 0, S, L);
111 }
112 
115 #define HANDLE_DI_FLAG(ID, NAME) .Case("DIFlag" #NAME, Flag##NAME)
116 #include "llvm/IR/DebugInfoFlags.def"
117  .Default(DINode::FlagZero);
118 }
119 
121  switch (Flag) {
122 #define HANDLE_DI_FLAG(ID, NAME) \
123  case Flag##NAME: \
124  return "DIFlag" #NAME;
125 #include "llvm/IR/DebugInfoFlags.def"
126  }
127  return "";
128 }
129 
131  SmallVectorImpl<DIFlags> &SplitFlags) {
132  // Flags that are packed together need to be specially handled, so
133  // that, for example, we emit "DIFlagPublic" and not
134  // "DIFlagPrivate | DIFlagProtected".
135  if (DIFlags A = Flags & FlagAccessibility) {
136  if (A == FlagPrivate)
137  SplitFlags.push_back(FlagPrivate);
138  else if (A == FlagProtected)
139  SplitFlags.push_back(FlagProtected);
140  else
141  SplitFlags.push_back(FlagPublic);
142  Flags &= ~A;
143  }
144  if (DIFlags R = Flags & FlagPtrToMemberRep) {
145  if (R == FlagSingleInheritance)
146  SplitFlags.push_back(FlagSingleInheritance);
147  else if (R == FlagMultipleInheritance)
148  SplitFlags.push_back(FlagMultipleInheritance);
149  else
150  SplitFlags.push_back(FlagVirtualInheritance);
151  Flags &= ~R;
152  }
153  if ((Flags & FlagIndirectVirtualBase) == FlagIndirectVirtualBase) {
154  Flags &= ~FlagIndirectVirtualBase;
155  SplitFlags.push_back(FlagIndirectVirtualBase);
156  }
157 
158 #define HANDLE_DI_FLAG(ID, NAME) \
159  if (DIFlags Bit = Flags & Flag##NAME) { \
160  SplitFlags.push_back(Bit); \
161  Flags &= ~Bit; \
162  }
163 #include "llvm/IR/DebugInfoFlags.def"
164  return Flags;
165 }
166 
168  if (auto *T = dyn_cast<DIType>(this))
169  return T->getScope();
170 
171  if (auto *SP = dyn_cast<DISubprogram>(this))
172  return SP->getScope();
173 
174  if (auto *LB = dyn_cast<DILexicalBlockBase>(this))
175  return LB->getScope();
176 
177  if (auto *NS = dyn_cast<DINamespace>(this))
178  return NS->getScope();
179 
180  if (auto *M = dyn_cast<DIModule>(this))
181  return M->getScope();
182 
183  assert((isa<DIFile>(this) || isa<DICompileUnit>(this)) &&
184  "Unhandled type of scope.");
185  return nullptr;
186 }
187 
189  if (auto *T = dyn_cast<DIType>(this))
190  return T->getName();
191  if (auto *SP = dyn_cast<DISubprogram>(this))
192  return SP->getName();
193  if (auto *NS = dyn_cast<DINamespace>(this))
194  return NS->getName();
195  if (auto *M = dyn_cast<DIModule>(this))
196  return M->getName();
197  assert((isa<DILexicalBlockBase>(this) || isa<DIFile>(this) ||
198  isa<DICompileUnit>(this)) &&
199  "Unhandled type of scope.");
200  return "";
201 }
202 
203 #ifndef NDEBUG
204 static bool isCanonical(const MDString *S) {
205  return !S || !S->getString().empty();
206 }
207 #endif
208 
209 GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag,
210  MDString *Header,
211  ArrayRef<Metadata *> DwarfOps,
212  StorageType Storage, bool ShouldCreate) {
213  unsigned Hash = 0;
214  if (Storage == Uniqued) {
215  GenericDINodeInfo::KeyTy Key(Tag, Header, DwarfOps);
216  if (auto *N = getUniqued(Context.pImpl->GenericDINodes, Key))
217  return N;
218  if (!ShouldCreate)
219  return nullptr;
220  Hash = Key.getHash();
221  } else {
222  assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
223  }
224 
225  // Use a nullptr for empty headers.
226  assert(isCanonical(Header) && "Expected canonical MDString");
227  Metadata *PreOps[] = {Header};
228  return storeImpl(new (DwarfOps.size() + 1) GenericDINode(
229  Context, Storage, Hash, Tag, PreOps, DwarfOps),
230  Storage, Context.pImpl->GenericDINodes);
231 }
232 
233 void GenericDINode::recalculateHash() {
234  setHash(GenericDINodeInfo::KeyTy::calculateHash(this));
235 }
236 
237 #define UNWRAP_ARGS_IMPL(...) __VA_ARGS__
238 #define UNWRAP_ARGS(ARGS) UNWRAP_ARGS_IMPL ARGS
239 #define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS) \
240  do { \
241  if (Storage == Uniqued) { \
242  if (auto *N = getUniqued(Context.pImpl->CLASS##s, \
243  CLASS##Info::KeyTy(UNWRAP_ARGS(ARGS)))) \
244  return N; \
245  if (!ShouldCreate) \
246  return nullptr; \
247  } else { \
248  assert(ShouldCreate && \
249  "Expected non-uniqued nodes to always be created"); \
250  } \
251  } while (false)
252 #define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS) \
253  return storeImpl(new (array_lengthof(OPS)) \
254  CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS), \
255  Storage, Context.pImpl->CLASS##s)
256 #define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS) \
257  return storeImpl(new (0u) CLASS(Context, Storage, UNWRAP_ARGS(ARGS)), \
258  Storage, Context.pImpl->CLASS##s)
259 #define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS) \
260  return storeImpl(new (array_lengthof(OPS)) CLASS(Context, Storage, OPS), \
261  Storage, Context.pImpl->CLASS##s)
262 #define DEFINE_GETIMPL_STORE_N(CLASS, ARGS, OPS, NUM_OPS) \
263  return storeImpl(new (NUM_OPS) \
264  CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS), \
265  Storage, Context.pImpl->CLASS##s)
266 
267 DISubrange *DISubrange::getImpl(LLVMContext &Context, int64_t Count, int64_t Lo,
268  StorageType Storage, bool ShouldCreate) {
269  auto *CountNode = ConstantAsMetadata::get(
270  ConstantInt::getSigned(Type::getInt64Ty(Context), Count));
271  return getImpl(Context, CountNode, Lo, Storage, ShouldCreate);
272 }
273 
274 DISubrange *DISubrange::getImpl(LLVMContext &Context, Metadata *CountNode,
275  int64_t Lo, StorageType Storage,
276  bool ShouldCreate) {
277  DEFINE_GETIMPL_LOOKUP(DISubrange, (CountNode, Lo));
278  Metadata *Ops[] = { CountNode };
279  DEFINE_GETIMPL_STORE(DISubrange, (CountNode, Lo), Ops);
280 }
281 
282 DIEnumerator *DIEnumerator::getImpl(LLVMContext &Context, int64_t Value,
283  bool IsUnsigned, MDString *Name,
284  StorageType Storage, bool ShouldCreate) {
285  assert(isCanonical(Name) && "Expected canonical MDString");
286  DEFINE_GETIMPL_LOOKUP(DIEnumerator, (Value, IsUnsigned, Name));
287  Metadata *Ops[] = {Name};
288  DEFINE_GETIMPL_STORE(DIEnumerator, (Value, IsUnsigned), Ops);
289 }
290 
291 DIBasicType *DIBasicType::getImpl(LLVMContext &Context, unsigned Tag,
292  MDString *Name, uint64_t SizeInBits,
293  uint32_t AlignInBits, unsigned Encoding,
294  DIFlags Flags, StorageType Storage,
295  bool ShouldCreate) {
296  assert(isCanonical(Name) && "Expected canonical MDString");
298  (Tag, Name, SizeInBits, AlignInBits, Encoding, Flags));
299  Metadata *Ops[] = {nullptr, nullptr, Name};
300  DEFINE_GETIMPL_STORE(DIBasicType, (Tag, SizeInBits, AlignInBits, Encoding,
301  Flags), Ops);
302 }
303 
305  switch (getEncoding()) {
306  case dwarf::DW_ATE_signed:
307  case dwarf::DW_ATE_signed_char:
308  return Signedness::Signed;
309  case dwarf::DW_ATE_unsigned:
310  case dwarf::DW_ATE_unsigned_char:
311  return Signedness::Unsigned;
312  default:
313  return None;
314  }
315 }
316 
317 DIDerivedType *DIDerivedType::getImpl(
318  LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
319  unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
320  uint32_t AlignInBits, uint64_t OffsetInBits,
321  Optional<unsigned> DWARFAddressSpace, DIFlags Flags, Metadata *ExtraData,
322  StorageType Storage, bool ShouldCreate) {
323  assert(isCanonical(Name) && "Expected canonical MDString");
325  (Tag, Name, File, Line, Scope, BaseType, SizeInBits,
326  AlignInBits, OffsetInBits, DWARFAddressSpace, Flags,
327  ExtraData));
328  Metadata *Ops[] = {File, Scope, Name, BaseType, ExtraData};
330  DIDerivedType, (Tag, Line, SizeInBits, AlignInBits, OffsetInBits,
331  DWARFAddressSpace, Flags), Ops);
332 }
333 
334 DICompositeType *DICompositeType::getImpl(
335  LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
336  unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
337  uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags,
338  Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder,
339  Metadata *TemplateParams, MDString *Identifier, Metadata *Discriminator,
340  StorageType Storage, bool ShouldCreate) {
341  assert(isCanonical(Name) && "Expected canonical MDString");
342 
343  // Keep this in sync with buildODRType.
345  DICompositeType, (Tag, Name, File, Line, Scope, BaseType, SizeInBits,
346  AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
347  VTableHolder, TemplateParams, Identifier, Discriminator));
348  Metadata *Ops[] = {File, Scope, Name, BaseType,
349  Elements, VTableHolder, TemplateParams, Identifier,
350  Discriminator};
351  DEFINE_GETIMPL_STORE(DICompositeType, (Tag, Line, RuntimeLang, SizeInBits,
352  AlignInBits, OffsetInBits, Flags),
353  Ops);
354 }
355 
357  LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name,
358  Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType,
359  uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits,
360  DIFlags Flags, Metadata *Elements, unsigned RuntimeLang,
361  Metadata *VTableHolder, Metadata *TemplateParams, Metadata *Discriminator) {
362  assert(!Identifier.getString().empty() && "Expected valid identifier");
363  if (!Context.isODRUniquingDebugTypes())
364  return nullptr;
365  auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier];
366  if (!CT)
367  return CT = DICompositeType::getDistinct(
368  Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
369  AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
370  VTableHolder, TemplateParams, &Identifier, Discriminator);
371 
372  // Only mutate CT if it's a forward declaration and the new operands aren't.
373  assert(CT->getRawIdentifier() == &Identifier && "Wrong ODR identifier?");
374  if (!CT->isForwardDecl() || (Flags & DINode::FlagFwdDecl))
375  return CT;
376 
377  // Mutate CT in place. Keep this in sync with getImpl.
378  CT->mutate(Tag, Line, RuntimeLang, SizeInBits, AlignInBits, OffsetInBits,
379  Flags);
380  Metadata *Ops[] = {File, Scope, Name, BaseType,
381  Elements, VTableHolder, TemplateParams, &Identifier,
382  Discriminator};
383  assert((std::end(Ops) - std::begin(Ops)) == (int)CT->getNumOperands() &&
384  "Mismatched number of operands");
385  for (unsigned I = 0, E = CT->getNumOperands(); I != E; ++I)
386  if (Ops[I] != CT->getOperand(I))
387  CT->setOperand(I, Ops[I]);
388  return CT;
389 }
390 
391 DICompositeType *DICompositeType::getODRType(
392  LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name,
393  Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType,
394  uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits,
395  DIFlags Flags, Metadata *Elements, unsigned RuntimeLang,
396  Metadata *VTableHolder, Metadata *TemplateParams, Metadata *Discriminator) {
397  assert(!Identifier.getString().empty() && "Expected valid identifier");
398  if (!Context.isODRUniquingDebugTypes())
399  return nullptr;
400  auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier];
401  if (!CT)
403  Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
404  AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang, VTableHolder,
405  TemplateParams, &Identifier, Discriminator);
406  return CT;
407 }
408 
410  MDString &Identifier) {
411  assert(!Identifier.getString().empty() && "Expected valid identifier");
412  if (!Context.isODRUniquingDebugTypes())
413  return nullptr;
414  return Context.pImpl->DITypeMap->lookup(&Identifier);
415 }
416 
417 DISubroutineType *DISubroutineType::getImpl(LLVMContext &Context, DIFlags Flags,
418  uint8_t CC, Metadata *TypeArray,
419  StorageType Storage,
420  bool ShouldCreate) {
421  DEFINE_GETIMPL_LOOKUP(DISubroutineType, (Flags, CC, TypeArray));
422  Metadata *Ops[] = {nullptr, nullptr, nullptr, TypeArray};
423  DEFINE_GETIMPL_STORE(DISubroutineType, (Flags, CC), Ops);
424 }
425 
426 // FIXME: Implement this string-enum correspondence with a .def file and macros,
427 // so that the association is explicit rather than implied.
428 static const char *ChecksumKindName[DIFile::CSK_Last] = {
429  "CSK_MD5",
430  "CSK_SHA1"
431 };
432 
433 StringRef DIFile::getChecksumKindAsString(ChecksumKind CSKind) {
434  assert(CSKind <= DIFile::CSK_Last && "Invalid checksum kind");
435  // The first space was originally the CSK_None variant, which is now
436  // obsolete, but the space is still reserved in ChecksumKind, so we account
437  // for it here.
438  return ChecksumKindName[CSKind - 1];
439 }
440 
443  .Case("CSK_MD5", DIFile::CSK_MD5)
444  .Case("CSK_SHA1", DIFile::CSK_SHA1)
445  .Default(None);
446 }
447 
448 DIFile *DIFile::getImpl(LLVMContext &Context, MDString *Filename,
449  MDString *Directory,
452  bool ShouldCreate) {
453  assert(isCanonical(Filename) && "Expected canonical MDString");
454  assert(isCanonical(Directory) && "Expected canonical MDString");
455  assert((!CS || isCanonical(CS->Value)) && "Expected canonical MDString");
456  assert((!Source || isCanonical(*Source)) && "Expected canonical MDString");
457  DEFINE_GETIMPL_LOOKUP(DIFile, (Filename, Directory, CS, Source));
458  Metadata *Ops[] = {Filename, Directory, CS ? CS->Value : nullptr,
459  Source.getValueOr(nullptr)};
460  DEFINE_GETIMPL_STORE(DIFile, (CS, Source), Ops);
461 }
462 
463 DICompileUnit *DICompileUnit::getImpl(
464  LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
465  MDString *Producer, bool IsOptimized, MDString *Flags,
466  unsigned RuntimeVersion, MDString *SplitDebugFilename,
467  unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
468  Metadata *GlobalVariables, Metadata *ImportedEntities, Metadata *Macros,
469  uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling,
470  unsigned NameTableKind, StorageType Storage, bool ShouldCreate) {
471  assert(Storage != Uniqued && "Cannot unique DICompileUnit");
472  assert(isCanonical(Producer) && "Expected canonical MDString");
473  assert(isCanonical(Flags) && "Expected canonical MDString");
474  assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString");
475 
476  Metadata *Ops[] = {
477  File, Producer, Flags, SplitDebugFilename,
478  EnumTypes, RetainedTypes, GlobalVariables, ImportedEntities,
479  Macros};
480  return storeImpl(new (array_lengthof(Ops)) DICompileUnit(
481  Context, Storage, SourceLanguage, IsOptimized,
482  RuntimeVersion, EmissionKind, DWOId, SplitDebugInlining,
483  DebugInfoForProfiling, NameTableKind, Ops),
484  Storage);
485 }
486 
490  .Case("NoDebug", NoDebug)
491  .Case("FullDebug", FullDebug)
492  .Case("LineTablesOnly", LineTablesOnly)
493  .Case("DebugDirectivesOnly", DebugDirectivesOnly)
494  .Default(None);
495 }
496 
500  .Case("Default", DebugNameTableKind::Default)
503  .Default(None);
504 }
505 
507  switch (EK) {
508  case NoDebug: return "NoDebug";
509  case FullDebug: return "FullDebug";
510  case LineTablesOnly: return "LineTablesOnly";
511  case DebugDirectivesOnly: return "DebugDirectivesOnly";
512  }
513  return nullptr;
514 }
515 
517  switch (NTK) {
519  return nullptr;
521  return "GNU";
523  return "None";
524  }
525  return nullptr;
526 }
527 
529  if (auto *Block = dyn_cast<DILexicalBlockBase>(this))
530  return Block->getScope()->getSubprogram();
531  return const_cast<DISubprogram *>(cast<DISubprogram>(this));
532 }
533 
535  if (auto *File = dyn_cast<DILexicalBlockFile>(this))
536  return File->getScope()->getNonLexicalBlockFileScope();
537  return const_cast<DILocalScope *>(this);
538 }
539 
540 DISubprogram *DISubprogram::getImpl(
541  LLVMContext &Context, Metadata *Scope, MDString *Name,
542  MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
543  bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
544  Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex,
545  int ThisAdjustment, DIFlags Flags, bool IsOptimized, Metadata *Unit,
546  Metadata *TemplateParams, Metadata *Declaration, Metadata *RetainedNodes,
547  Metadata *ThrownTypes, StorageType Storage, bool ShouldCreate) {
548  assert(isCanonical(Name) && "Expected canonical MDString");
549  assert(isCanonical(LinkageName) && "Expected canonical MDString");
551  DISubprogram, (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit,
552  IsDefinition, ScopeLine, ContainingType, Virtuality,
553  VirtualIndex, ThisAdjustment, Flags, IsOptimized, Unit,
554  TemplateParams, Declaration, RetainedNodes, ThrownTypes));
556  File, Scope, Name, LinkageName, Type, Unit,
557  Declaration, RetainedNodes, ContainingType, TemplateParams, ThrownTypes};
558  if (!ThrownTypes) {
559  Ops.pop_back();
560  if (!TemplateParams) {
561  Ops.pop_back();
562  if (!ContainingType)
563  Ops.pop_back();
564  }
565  }
567  (Line, ScopeLine, Virtuality, VirtualIndex,
568  ThisAdjustment, Flags, IsLocalToUnit, IsDefinition,
569  IsOptimized),
570  Ops, Ops.size());
571 }
572 
573 bool DISubprogram::describes(const Function *F) const {
574  assert(F && "Invalid function");
575  if (F->getSubprogram() == this)
576  return true;
577  StringRef Name = getLinkageName();
578  if (Name.empty())
579  Name = getName();
580  return F->getName() == Name;
581 }
582 
583 DILexicalBlock *DILexicalBlock::getImpl(LLVMContext &Context, Metadata *Scope,
584  Metadata *File, unsigned Line,
585  unsigned Column, StorageType Storage,
586  bool ShouldCreate) {
587  // Fixup column.
588  adjustColumn(Column);
589 
590  assert(Scope && "Expected scope");
591  DEFINE_GETIMPL_LOOKUP(DILexicalBlock, (Scope, File, Line, Column));
592  Metadata *Ops[] = {File, Scope};
593  DEFINE_GETIMPL_STORE(DILexicalBlock, (Line, Column), Ops);
594 }
595 
596 DILexicalBlockFile *DILexicalBlockFile::getImpl(LLVMContext &Context,
597  Metadata *Scope, Metadata *File,
598  unsigned Discriminator,
599  StorageType Storage,
600  bool ShouldCreate) {
601  assert(Scope && "Expected scope");
602  DEFINE_GETIMPL_LOOKUP(DILexicalBlockFile, (Scope, File, Discriminator));
603  Metadata *Ops[] = {File, Scope};
604  DEFINE_GETIMPL_STORE(DILexicalBlockFile, (Discriminator), Ops);
605 }
606 
607 DINamespace *DINamespace::getImpl(LLVMContext &Context, Metadata *Scope,
608  MDString *Name, bool ExportSymbols,
609  StorageType Storage, bool ShouldCreate) {
610  assert(isCanonical(Name) && "Expected canonical MDString");
611  DEFINE_GETIMPL_LOOKUP(DINamespace, (Scope, Name, ExportSymbols));
612  // The nullptr is for DIScope's File operand. This should be refactored.
613  Metadata *Ops[] = {nullptr, Scope, Name};
614  DEFINE_GETIMPL_STORE(DINamespace, (ExportSymbols), Ops);
615 }
616 
617 DIModule *DIModule::getImpl(LLVMContext &Context, Metadata *Scope,
618  MDString *Name, MDString *ConfigurationMacros,
619  MDString *IncludePath, MDString *ISysRoot,
620  StorageType Storage, bool ShouldCreate) {
621  assert(isCanonical(Name) && "Expected canonical MDString");
623  DIModule, (Scope, Name, ConfigurationMacros, IncludePath, ISysRoot));
624  Metadata *Ops[] = {Scope, Name, ConfigurationMacros, IncludePath, ISysRoot};
626 }
627 
628 DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context,
629  MDString *Name,
630  Metadata *Type,
631  StorageType Storage,
632  bool ShouldCreate) {
633  assert(isCanonical(Name) && "Expected canonical MDString");
635  Metadata *Ops[] = {Name, Type};
637 }
638 
639 DITemplateValueParameter *DITemplateValueParameter::getImpl(
640  LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type,
641  Metadata *Value, StorageType Storage, bool ShouldCreate) {
642  assert(isCanonical(Name) && "Expected canonical MDString");
643  DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter, (Tag, Name, Type, Value));
644  Metadata *Ops[] = {Name, Type, Value};
646 }
647 
649 DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
650  MDString *LinkageName, Metadata *File, unsigned Line,
651  Metadata *Type, bool IsLocalToUnit, bool IsDefinition,
652  Metadata *StaticDataMemberDeclaration,
653  uint32_t AlignInBits, StorageType Storage,
654  bool ShouldCreate) {
655  assert(isCanonical(Name) && "Expected canonical MDString");
656  assert(isCanonical(LinkageName) && "Expected canonical MDString");
658  (Scope, Name, LinkageName, File, Line, Type,
659  IsLocalToUnit, IsDefinition,
660  StaticDataMemberDeclaration, AlignInBits));
661  Metadata *Ops[] = {
662  Scope, Name, File, Type, Name, LinkageName, StaticDataMemberDeclaration};
664  (Line, IsLocalToUnit, IsDefinition, AlignInBits),
665  Ops);
666 }
667 
668 DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, Metadata *Scope,
669  MDString *Name, Metadata *File,
670  unsigned Line, Metadata *Type,
671  unsigned Arg, DIFlags Flags,
672  uint32_t AlignInBits,
673  StorageType Storage,
674  bool ShouldCreate) {
675  // 64K ought to be enough for any frontend.
676  assert(Arg <= UINT16_MAX && "Expected argument number to fit in 16-bits");
677 
678  assert(Scope && "Expected scope");
679  assert(isCanonical(Name) && "Expected canonical MDString");
681  (Scope, Name, File, Line, Type, Arg, Flags,
682  AlignInBits));
683  Metadata *Ops[] = {Scope, Name, File, Type};
684  DEFINE_GETIMPL_STORE(DILocalVariable, (Line, Arg, Flags, AlignInBits), Ops);
685 }
686 
688  // This is used by the Verifier so be mindful of broken types.
689  const Metadata *RawType = getRawType();
690  while (RawType) {
691  // Try to get the size directly.
692  if (auto *T = dyn_cast<DIType>(RawType))
693  if (uint64_t Size = T->getSizeInBits())
694  return Size;
695 
696  if (auto *DT = dyn_cast<DIDerivedType>(RawType)) {
697  // Look at the base type.
698  RawType = DT->getRawBaseType();
699  continue;
700  }
701 
702  // Missing type or size.
703  break;
704  }
705 
706  // Fail gracefully.
707  return None;
708 }
709 
710 DILabel *DILabel::getImpl(LLVMContext &Context, Metadata *Scope,
711  MDString *Name, Metadata *File, unsigned Line,
712  StorageType Storage,
713  bool ShouldCreate) {
714  assert(Scope && "Expected scope");
715  assert(isCanonical(Name) && "Expected canonical MDString");
717  (Scope, Name, File, Line));
718  Metadata *Ops[] = {Scope, Name, File};
719  DEFINE_GETIMPL_STORE(DILabel, (Line), Ops);
720 }
721 
722 DIExpression *DIExpression::getImpl(LLVMContext &Context,
723  ArrayRef<uint64_t> Elements,
724  StorageType Storage, bool ShouldCreate) {
725  DEFINE_GETIMPL_LOOKUP(DIExpression, (Elements));
727 }
728 
730  switch (getOp()) {
732  return 3;
733  case dwarf::DW_OP_constu:
734  case dwarf::DW_OP_plus_uconst:
735  return 2;
736  default:
737  return 1;
738  }
739 }
740 
741 bool DIExpression::isValid() const {
742  for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) {
743  // Check that there's space for the operand.
744  if (I->get() + I->getSize() > E->get())
745  return false;
746 
747  // Check that the operand is valid.
748  switch (I->getOp()) {
749  default:
750  return false;
752  // A fragment operator must appear at the end.
753  return I->get() + I->getSize() == E->get();
754  case dwarf::DW_OP_stack_value: {
755  // Must be the last one or followed by a DW_OP_LLVM_fragment.
756  if (I->get() + I->getSize() == E->get())
757  break;
758  auto J = I;
759  if ((++J)->getOp() != dwarf::DW_OP_LLVM_fragment)
760  return false;
761  break;
762  }
763  case dwarf::DW_OP_swap: {
764  // Must be more than one implicit element on the stack.
765 
766  // FIXME: A better way to implement this would be to add a local variable
767  // that keeps track of the stack depth and introduce something like a
768  // DW_LLVM_OP_implicit_location as a placeholder for the location this
769  // DIExpression is attached to, or else pass the number of implicit stack
770  // elements into isValid.
771  if (getNumElements() == 1)
772  return false;
773  break;
774  }
775  case dwarf::DW_OP_constu:
776  case dwarf::DW_OP_plus_uconst:
777  case dwarf::DW_OP_plus:
778  case dwarf::DW_OP_minus:
779  case dwarf::DW_OP_mul:
780  case dwarf::DW_OP_div:
781  case dwarf::DW_OP_mod:
782  case dwarf::DW_OP_or:
783  case dwarf::DW_OP_and:
784  case dwarf::DW_OP_xor:
785  case dwarf::DW_OP_shl:
786  case dwarf::DW_OP_shr:
787  case dwarf::DW_OP_shra:
788  case dwarf::DW_OP_deref:
789  case dwarf::DW_OP_xderef:
790  case dwarf::DW_OP_lit0:
791  case dwarf::DW_OP_not:
792  case dwarf::DW_OP_dup:
793  break;
794  }
795  }
796  return true;
797 }
798 
801  for (auto I = Start; I != End; ++I)
802  if (I->getOp() == dwarf::DW_OP_LLVM_fragment) {
803  DIExpression::FragmentInfo Info = {I->getArg(1), I->getArg(0)};
804  return Info;
805  }
806  return None;
807 }
808 
810  int64_t Offset) {
811  if (Offset > 0) {
812  Ops.push_back(dwarf::DW_OP_plus_uconst);
813  Ops.push_back(Offset);
814  } else if (Offset < 0) {
815  Ops.push_back(dwarf::DW_OP_constu);
816  Ops.push_back(-Offset);
817  Ops.push_back(dwarf::DW_OP_minus);
818  }
819 }
820 
821 bool DIExpression::extractIfOffset(int64_t &Offset) const {
822  if (getNumElements() == 0) {
823  Offset = 0;
824  return true;
825  }
826 
827  if (getNumElements() == 2 && Elements[0] == dwarf::DW_OP_plus_uconst) {
828  Offset = Elements[1];
829  return true;
830  }
831 
832  if (getNumElements() == 3 && Elements[0] == dwarf::DW_OP_constu) {
833  if (Elements[2] == dwarf::DW_OP_plus) {
834  Offset = Elements[1];
835  return true;
836  }
837  if (Elements[2] == dwarf::DW_OP_minus) {
838  Offset = -Elements[1];
839  return true;
840  }
841  }
842 
843  return false;
844 }
845 
846 DIExpression *DIExpression::prepend(const DIExpression *Expr, bool DerefBefore,
847  int64_t Offset, bool DerefAfter,
848  bool StackValue) {
850  if (DerefBefore)
851  Ops.push_back(dwarf::DW_OP_deref);
852 
853  appendOffset(Ops, Offset);
854  if (DerefAfter)
855  Ops.push_back(dwarf::DW_OP_deref);
856 
857  return prependOpcodes(Expr, Ops, StackValue);
858 }
859 
862  bool StackValue) {
863  assert(Expr && "Can't prepend ops to this expression");
864 
865  // If there are no ops to prepend, do not even add the DW_OP_stack_value.
866  if (Ops.empty())
867  StackValue = false;
868  for (auto Op : Expr->expr_ops()) {
869  // A DW_OP_stack_value comes at the end, but before a DW_OP_LLVM_fragment.
870  if (StackValue) {
871  if (Op.getOp() == dwarf::DW_OP_stack_value)
872  StackValue = false;
873  else if (Op.getOp() == dwarf::DW_OP_LLVM_fragment) {
874  Ops.push_back(dwarf::DW_OP_stack_value);
875  StackValue = false;
876  }
877  }
878  Op.appendToVector(Ops);
879  }
880  if (StackValue)
881  Ops.push_back(dwarf::DW_OP_stack_value);
882  return DIExpression::get(Expr->getContext(), Ops);
883 }
884 
886  ArrayRef<uint64_t> Ops) {
887  assert(Expr && !Ops.empty() && "Can't append ops to this expression");
888 
889  // Copy Expr's current op list.
891  for (auto Op : Expr->expr_ops()) {
892  // Append new opcodes before DW_OP_{stack_value, LLVM_fragment}.
893  if (Op.getOp() == dwarf::DW_OP_stack_value ||
894  Op.getOp() == dwarf::DW_OP_LLVM_fragment) {
895  NewOps.append(Ops.begin(), Ops.end());
896 
897  // Ensure that the new opcodes are only appended once.
898  Ops = None;
899  }
900  Op.appendToVector(NewOps);
901  }
902 
903  NewOps.append(Ops.begin(), Ops.end());
904  return DIExpression::get(Expr->getContext(), NewOps);
905 }
906 
908  ArrayRef<uint64_t> Ops) {
909  assert(Expr && !Ops.empty() && "Can't append ops to this expression");
910  assert(none_of(Ops,
911  [](uint64_t Op) {
912  return Op == dwarf::DW_OP_stack_value ||
914  }) &&
915  "Can't append this op");
916 
917  // Append a DW_OP_deref after Expr's current op list if it's non-empty and
918  // has no DW_OP_stack_value.
919  //
920  // Match .* DW_OP_stack_value (DW_OP_LLVM_fragment A B)?.
922  unsigned DropUntilStackValue = FI.hasValue() ? 3 : 0;
923  ArrayRef<uint64_t> ExprOpsBeforeFragment =
924  Expr->getElements().drop_back(DropUntilStackValue);
925  bool NeedsDeref = (Expr->getNumElements() > DropUntilStackValue) &&
926  (ExprOpsBeforeFragment.back() != dwarf::DW_OP_stack_value);
927  bool NeedsStackValue = NeedsDeref || ExprOpsBeforeFragment.empty();
928 
929  // Append a DW_OP_deref after Expr's current op list if needed, then append
930  // the new ops, and finally ensure that a single DW_OP_stack_value is present.
932  if (NeedsDeref)
933  NewOps.push_back(dwarf::DW_OP_deref);
934  NewOps.append(Ops.begin(), Ops.end());
935  if (NeedsStackValue)
936  NewOps.push_back(dwarf::DW_OP_stack_value);
937  return DIExpression::append(Expr, NewOps);
938 }
939 
941  const DIExpression *Expr, unsigned OffsetInBits, unsigned SizeInBits) {
943  // Copy over the expression, but leave off any trailing DW_OP_LLVM_fragment.
944  if (Expr) {
945  for (auto Op : Expr->expr_ops()) {
946  switch (Op.getOp()) {
947  default: break;
948  case dwarf::DW_OP_plus:
949  case dwarf::DW_OP_minus:
950  // We can't safely split arithmetic into multiple fragments because we
951  // can't express carry-over between fragments.
952  //
953  // FIXME: We *could* preserve the lowest fragment of a constant offset
954  // operation if the offset fits into SizeInBits.
955  return None;
957  // Make the new offset point into the existing fragment.
958  uint64_t FragmentOffsetInBits = Op.getArg(0);
959  uint64_t FragmentSizeInBits = Op.getArg(1);
960  (void)FragmentSizeInBits;
961  assert((OffsetInBits + SizeInBits <= FragmentSizeInBits) &&
962  "new fragment outside of original fragment");
963  OffsetInBits += FragmentOffsetInBits;
964  continue;
965  }
966  }
967  Op.appendToVector(Ops);
968  }
969  }
971  Ops.push_back(OffsetInBits);
972  Ops.push_back(SizeInBits);
973  return DIExpression::get(Expr->getContext(), Ops);
974 }
975 
977  // Recognize DW_OP_constu C DW_OP_stack_value (DW_OP_LLVM_fragment Len Ofs)?.
978  if (getNumElements() != 3 && getNumElements() != 6)
979  return false;
980  if (getElement(0) != dwarf::DW_OP_constu ||
981  getElement(2) != dwarf::DW_OP_stack_value)
982  return false;
983  if (getNumElements() == 6 && getElement(3) != dwarf::DW_OP_LLVM_fragment)
984  return false;
985  return true;
986 }
987 
989 DIGlobalVariableExpression::getImpl(LLVMContext &Context, Metadata *Variable,
990  Metadata *Expression, StorageType Storage,
991  bool ShouldCreate) {
992  DEFINE_GETIMPL_LOOKUP(DIGlobalVariableExpression, (Variable, Expression));
993  Metadata *Ops[] = {Variable, Expression};
995 }
996 
997 DIObjCProperty *DIObjCProperty::getImpl(
998  LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line,
999  MDString *GetterName, MDString *SetterName, unsigned Attributes,
1000  Metadata *Type, StorageType Storage, bool ShouldCreate) {
1001  assert(isCanonical(Name) && "Expected canonical MDString");
1002  assert(isCanonical(GetterName) && "Expected canonical MDString");
1003  assert(isCanonical(SetterName) && "Expected canonical MDString");
1004  DEFINE_GETIMPL_LOOKUP(DIObjCProperty, (Name, File, Line, GetterName,
1005  SetterName, Attributes, Type));
1006  Metadata *Ops[] = {Name, File, GetterName, SetterName, Type};
1007  DEFINE_GETIMPL_STORE(DIObjCProperty, (Line, Attributes), Ops);
1008 }
1009 
1010 DIImportedEntity *DIImportedEntity::getImpl(LLVMContext &Context, unsigned Tag,
1011  Metadata *Scope, Metadata *Entity,
1012  Metadata *File, unsigned Line,
1013  MDString *Name, StorageType Storage,
1014  bool ShouldCreate) {
1015  assert(isCanonical(Name) && "Expected canonical MDString");
1017  (Tag, Scope, Entity, File, Line, Name));
1018  Metadata *Ops[] = {Scope, Entity, Name, File};
1019  DEFINE_GETIMPL_STORE(DIImportedEntity, (Tag, Line), Ops);
1020 }
1021 
1022 DIMacro *DIMacro::getImpl(LLVMContext &Context, unsigned MIType,
1023  unsigned Line, MDString *Name, MDString *Value,
1024  StorageType Storage, bool ShouldCreate) {
1025  assert(isCanonical(Name) && "Expected canonical MDString");
1026  DEFINE_GETIMPL_LOOKUP(DIMacro, (MIType, Line, Name, Value));
1027  Metadata *Ops[] = { Name, Value };
1028  DEFINE_GETIMPL_STORE(DIMacro, (MIType, Line), Ops);
1029 }
1030 
1031 DIMacroFile *DIMacroFile::getImpl(LLVMContext &Context, unsigned MIType,
1032  unsigned Line, Metadata *File,
1033  Metadata *Elements, StorageType Storage,
1034  bool ShouldCreate) {
1036  (MIType, Line, File, Elements));
1037  Metadata *Ops[] = { File, Elements };
1038  DEFINE_GETIMPL_STORE(DIMacroFile, (MIType, Line), Ops);
1039 }
static void appendOffset(SmallVectorImpl< uint64_t > &Ops, int64_t Offset)
Append Ops with operations to apply the Offset.
uint64_t CallInst * C
const_iterator end(StringRef path)
Get end iterator over path.
Definition: Path.cpp:259
unsigned char Storage
Storage flag for non-uniqued, otherwise unowned, metadata.
Definition: Metadata.h:69
ArrayRef< uint64_t > getElements() const
bool isConstant() const
Determine whether this represents a standalone constant value.
static std::string getLinkageName(GlobalValue::LinkageTypes LT)
Definition: AsmWriter.cpp:2817
LLVMContext & Context
const T & back() const
back - Get the last element.
Definition: ArrayRef.h:158
const_iterator begin(StringRef path, Style style=Style::native)
Get begin iterator over path.
Definition: Path.cpp:250
static DICompositeType * getODRTypeIfExists(LLVMContext &Context, MDString &Identifier)
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
iterator begin() const
Definition: ArrayRef.h:137
static const DILocation * getMergedLocation(const DILocation *LocA, const DILocation *LocB)
When two instructions are combined into a single instruction we also need to combine the original loc...
constexpr T getValueOr(U &&value) const LLVM_LVALUE_FUNCTION
Definition: Optional.h:190
#define DEFINE_GETIMPL_STORE_N(CLASS, ARGS, OPS, NUM_OPS)
unsigned getSize() const
Return the size of the operand.
static bool isCanonical(const MDString *S)
Optional< Signedness > getSignedness() const
Return the signedness of this type, or None if this type is neither signed nor unsigned.
Metadata node.
Definition: Metadata.h:862
F(f)
static T * storeImpl(T *N, StorageType Storage, StoreT &Store)
Definition: MetadataImpl.h:43
static IntegerType * getInt64Ty(LLVMContext &C)
Definition: Type.cpp:177
static Optional< ChecksumKind > getChecksumKind(StringRef CSKindStr)
A scope for locals.
#define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS)
static DIExpression * prepend(const DIExpression *Expr, bool DerefBefore, int64_t Offset=0, bool DerefAfter=false, bool StackValue=false)
Prepend DIExpr with a deref and offset operation and optionally turn it into a stack value...
static DIExpression * prependOpcodes(const DIExpression *Expr, SmallVectorImpl< uint64_t > &Ops, bool StackValue=false)
Prepend DIExpr with the given opcodes and optionally turn it into a stack value.
Array subrange.
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: APFloat.h:42
bool none_of(R &&Range, UnaryPredicate P)
Provide wrappers to std::none_of which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1056
static StringRef getName(Value *V)
Only used in LLVM metadata.
Definition: Dwarf.h:132
Holds a subclass of DINode.
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE R Default(T Value)
Definition: StringSwitch.h:203
Subprogram description.
Key
PAL metadata keys.
Holds the characteristics of one fragment of a larger variable.
static DIExpression * append(const DIExpression *Expr, ArrayRef< uint64_t > Ops)
Append the opcodes Ops to DIExpr.
LLVMContext & getContext() const
Definition: Metadata.h:922
Enumeration value.
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:133
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:33
static Optional< FragmentInfo > getFragmentInfo(expr_op_iterator Start, expr_op_iterator End)
Retrieve the details of this fragment expression.
Debug location.
static ConstantAsMetadata * get(Constant *C)
Definition: Metadata.h:408
Flag
These should be considered private to the implementation of the MCInstrDesc class.
Definition: MCInstrDesc.h:118
StringRef getString() const
Definition: Metadata.cpp:464
static StringRef getFlagString(DIFlags Flag)
static MDTuple * get(LLVMContext &Context, ArrayRef< Metadata *> MDs)
Definition: Metadata.h:1164
A switch()-like statement whose cases are string literals.
Definition: StringSwitch.h:43
static T * getUniqued(DenseSet< T *, InfoT > &Store, const typename InfoT::KeyTy &Key)
Definition: MetadataImpl.h:23
A single checksum, represented by a Kind and a Value (a string).
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:46
This is an important class for using LLVM in a threaded context.
Definition: LLVMContext.h:69
DISubprogram * getSubprogram() const
Get the attached subprogram.
Definition: Metadata.cpp:1508
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:149
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
#define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS)
static MDTuple * getDistinct(LLVMContext &Context, ArrayRef< Metadata *> MDs)
Definition: Metadata.h:1172
SmallSet - This maintains a set of unique values, optimizing for the case when the set is small (less...
Definition: SmallSet.h:135
static void adjustColumn(unsigned &Column)
SourceLanguage
Definition: Dwarf.h:185
static const char * nameTableKindString(DebugNameTableKind PK)
std::pair< iterator, bool > insert(PtrType Ptr)
Inserts Ptr if and only if there is no element in the container equal to Ptr.
Definition: SmallPtrSet.h:371
StorageType
Active type of storage.
Definition: Metadata.h:66
bool isODRUniquingDebugTypes() const
Whether there is a string map for uniquing debug info identifiers across the context.
A pair of DIGlobalVariable and DIExpression.
static DIExpression * appendToStack(const DIExpression *Expr, ArrayRef< uint64_t > Ops)
Convert DIExpr into a stack value if it isn&#39;t one already by appending DW_OP_deref if needed...
Optional< FragmentInfo > getFragmentInfo() const
Retrieve the details of this fragment expression.
std::pair< NoneType, bool > insert(const T &V)
insert - Insert an element into the set if it isn&#39;t already there.
Definition: SmallSet.h:181
DebugNameTableKind getNameTableKind() const
size_t size() const
Definition: SmallVector.h:53
LLVMContextImpl *const pImpl
Definition: LLVMContext.h:71
An imported module (C++ using directive or similar).
DILocalScope * getNonLexicalBlockFileScope() const
Get the first non DILexicalBlockFile scope of this scope.
Base class for scope-like contexts.
iterator_range< expr_op_iterator > expr_ops() const
BaseType
A given derived pointer can have multiple base pointers through phi/selects.
#define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS)
SmallPtrSet - This class implements a set which is optimized for holding SmallSize or less elements...
Definition: SmallPtrSet.h:418
StringRef getName() const
Optional< uint64_t > getSizeInBits() const
Determines the size of the variable&#39;s type.
This is a &#39;vector&#39; (really, a variable-sized array), optimized for the case when the array is small...
Definition: SmallVector.h:847
constexpr size_t array_lengthof(T(&)[N])
Find the length of an array.
Definition: STLExtras.h:900
static DIFlags splitFlags(DIFlags Flags, SmallVectorImpl< DIFlags > &SplitFlags)
Split up a flags bitfield.
iterator end() const
Definition: ArrayRef.h:138
static ConstantInt * getSigned(IntegerType *Ty, int64_t V)
Return a ConstantInt with the specified value for the specified type.
Definition: Constants.cpp:635
ArrayRef< T > drop_back(size_t N=1) const
Drop the last N elements of the array.
Definition: ArrayRef.h:194
DWARF expression.
DISubprogram * getSubprogram() const
Get the subprogram for this scope.
DebugEmissionKind getEmissionKind() const
static DIFlags getFlag(StringRef Flag)
A (clang) module that has been imported by the compile unit.
unsigned unsigned DILocalScope * Scope
Generic tagged DWARF-like metadata node.
LLVM_ATTRIBUTE_ALWAYS_INLINE StringSwitch & Case(StringLiteral S, T Value)
Definition: StringSwitch.h:70
unsigned getNumElements() const
void append(in_iter in_start, in_iter in_end)
Add the specified range to the end of the SmallVector.
Definition: SmallVector.h:394
amdgpu Simplify well known AMD library false Value Value * Arg
#define HANDLE_DI_FLAG(ID, NAME)
Type array for a subprogram.
bool hasValue() const
Definition: Optional.h:183
static const char * ChecksumKindName[DIFile::CSK_Last]
DIFlags
Debug info flags.
LLVM_NODISCARD bool empty() const
Definition: SmallVector.h:56
StringRef getName() const
Return a constant reference to the value&#39;s name.
Definition: Value.cpp:224
#define I(x, y, z)
Definition: MD5.cpp:58
#define N
uint32_t Size
Definition: Profile.cpp:47
bool extractIfOffset(int64_t &Offset) const
If this is a constant offset, extract it.
static DICompositeType * buildODRType(LLVMContext &Context, MDString &Identifier, unsigned Tag, MDString *Name, Metadata *File, unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags, Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder, Metadata *TemplateParams, Metadata *Discriminator)
Build a DICompositeType with the given ODR identifier.
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
LLVM Value Representation.
Definition: Value.h:73
#define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS)
An iterator for expression operands.
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
A single uniqued string.
Definition: Metadata.h:602
static LazyValueInfoImpl & getImpl(void *&PImpl, AssumptionCache *AC, const DataLayout *DL, DominatorTree *DT=nullptr)
This lazily constructs the LazyValueInfoImpl.
Optional< DenseMap< const MDString *, DICompositeType * > > DITypeMap
Root of the metadata hierarchy.
Definition: Metadata.h:58
static const char * emissionKindString(DebugEmissionKind EK)
bool empty() const
empty - Check if the array is empty.
Definition: ArrayRef.h:144
static Optional< DIExpression * > createFragmentExpression(const DIExpression *Expr, unsigned OffsetInBits, unsigned SizeInBits)
Create a DIExpression to describe one part of an aggregate variable that is fragmented across multipl...
Basic type, like &#39;int&#39; or &#39;float&#39;.
DIScopeRef getScope() const
size_type count(const T &V) const
count - Return 1 if the element is in the set, 0 otherwise.
Definition: SmallSet.h:165