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
20using namespace llvm;
21
22DILocation::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
35static 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
41DILocation *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  assert(Scope && "Expected scope");
49  if (Storage == Uniqued) {
50    if (auto *N =
51            getUniqued(Context.pImpl->DILocations,
52                       DILocationInfo::KeyTy(Line, Column, Scope, InlinedAt)))
53      return N;
54    if (!ShouldCreate)
55      return nullptr;
56  } else {
57    assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
58  }
59
60  SmallVector<Metadata *, 2> Ops;
61  Ops.push_back(Scope);
62  if (InlinedAt)
63    Ops.push_back(InlinedAt);
64  return storeImpl(new (Ops.size())
65                       DILocation(Context, Storage, Line, Column, Ops),
66                   Storage, Context.pImpl->DILocations);
67}
68
69unsigned DILocation::computeNewDiscriminator() const {
70  // FIXME: This seems completely wrong.
71  //
72  //  1. If two modules are generated in the same context, then the second
73  //     Module will get different discriminators than it would have if it were
74  //     generated in its own context.
75  //  2. If this function is called after round-tripping to bitcode instead of
76  //     before, it will give a different (and potentially incorrect!) return.
77  //
78  // The discriminator should instead be calculated from local information
79  // where it's actually needed.  This logic should be moved to
80  // AddDiscriminators::runOnFunction(), where it doesn't pollute the
81  // LLVMContext.
82  std::pair<const char *, unsigned> Key(getFilename().data(), getLine());
83  return ++getContext().pImpl->DiscriminatorTable[Key];
84}
85
86unsigned DINode::getFlag(StringRef Flag) {
87  return StringSwitch<unsigned>(Flag)
88#define HANDLE_DI_FLAG(ID, NAME) .Case("DIFlag" #NAME, Flag##NAME)
89#include "llvm/IR/DebugInfoFlags.def"
90      .Default(0);
91}
92
93const char *DINode::getFlagString(unsigned Flag) {
94  switch (Flag) {
95  default:
96    return "";
97#define HANDLE_DI_FLAG(ID, NAME)                                               \
98  case Flag##NAME:                                                             \
99    return "DIFlag" #NAME;
100#include "llvm/IR/DebugInfoFlags.def"
101  }
102}
103
104unsigned DINode::splitFlags(unsigned Flags,
105                            SmallVectorImpl<unsigned> &SplitFlags) {
106  // Accessibility flags need to be specially handled, since they're packed
107  // together.
108  if (unsigned A = Flags & FlagAccessibility) {
109    if (A == FlagPrivate)
110      SplitFlags.push_back(FlagPrivate);
111    else if (A == FlagProtected)
112      SplitFlags.push_back(FlagProtected);
113    else
114      SplitFlags.push_back(FlagPublic);
115    Flags &= ~A;
116  }
117
118#define HANDLE_DI_FLAG(ID, NAME)                                               \
119  if (unsigned Bit = Flags & ID) {                                             \
120    SplitFlags.push_back(Bit);                                                 \
121    Flags &= ~Bit;                                                             \
122  }
123#include "llvm/IR/DebugInfoFlags.def"
124
125  return Flags;
126}
127
128DIScopeRef DIScope::getScope() const {
129  if (auto *T = dyn_cast<DIType>(this))
130    return T->getScope();
131
132  if (auto *SP = dyn_cast<DISubprogram>(this))
133    return SP->getScope();
134
135  if (auto *LB = dyn_cast<DILexicalBlockBase>(this))
136    return DIScopeRef(LB->getScope());
137
138  if (auto *NS = dyn_cast<DINamespace>(this))
139    return DIScopeRef(NS->getScope());
140
141  if (auto *M = dyn_cast<DIModule>(this))
142    return DIScopeRef(M->getScope());
143
144  assert((isa<DIFile>(this) || isa<DICompileUnit>(this)) &&
145         "Unhandled type of scope.");
146  return nullptr;
147}
148
149StringRef DIScope::getName() const {
150  if (auto *T = dyn_cast<DIType>(this))
151    return T->getName();
152  if (auto *SP = dyn_cast<DISubprogram>(this))
153    return SP->getName();
154  if (auto *NS = dyn_cast<DINamespace>(this))
155    return NS->getName();
156  if (auto *M = dyn_cast<DIModule>(this))
157    return M->getName();
158  assert((isa<DILexicalBlockBase>(this) || isa<DIFile>(this) ||
159          isa<DICompileUnit>(this)) &&
160         "Unhandled type of scope.");
161  return "";
162}
163
164static StringRef getString(const MDString *S) {
165  if (S)
166    return S->getString();
167  return StringRef();
168}
169
170#ifndef NDEBUG
171static bool isCanonical(const MDString *S) {
172  return !S || !S->getString().empty();
173}
174#endif
175
176GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag,
177                                      MDString *Header,
178                                      ArrayRef<Metadata *> DwarfOps,
179                                      StorageType Storage, bool ShouldCreate) {
180  unsigned Hash = 0;
181  if (Storage == Uniqued) {
182    GenericDINodeInfo::KeyTy Key(Tag, getString(Header), DwarfOps);
183    if (auto *N = getUniqued(Context.pImpl->GenericDINodes, Key))
184      return N;
185    if (!ShouldCreate)
186      return nullptr;
187    Hash = Key.getHash();
188  } else {
189    assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
190  }
191
192  // Use a nullptr for empty headers.
193  assert(isCanonical(Header) && "Expected canonical MDString");
194  Metadata *PreOps[] = {Header};
195  return storeImpl(new (DwarfOps.size() + 1) GenericDINode(
196                       Context, Storage, Hash, Tag, PreOps, DwarfOps),
197                   Storage, Context.pImpl->GenericDINodes);
198}
199
200void GenericDINode::recalculateHash() {
201  setHash(GenericDINodeInfo::KeyTy::calculateHash(this));
202}
203
204#define UNWRAP_ARGS_IMPL(...) __VA_ARGS__
205#define UNWRAP_ARGS(ARGS) UNWRAP_ARGS_IMPL ARGS
206#define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS)                                     \
207  do {                                                                         \
208    if (Storage == Uniqued) {                                                  \
209      if (auto *N = getUniqued(Context.pImpl->CLASS##s,                        \
210                               CLASS##Info::KeyTy(UNWRAP_ARGS(ARGS))))         \
211        return N;                                                              \
212      if (!ShouldCreate)                                                       \
213        return nullptr;                                                        \
214    } else {                                                                   \
215      assert(ShouldCreate &&                                                   \
216             "Expected non-uniqued nodes to always be created");               \
217    }                                                                          \
218  } while (false)
219#define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS)                                 \
220  return storeImpl(new (ArrayRef<Metadata *>(OPS).size())                      \
221                       CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS),        \
222                   Storage, Context.pImpl->CLASS##s)
223#define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS)                               \
224  return storeImpl(new (0u) CLASS(Context, Storage, UNWRAP_ARGS(ARGS)),        \
225                   Storage, Context.pImpl->CLASS##s)
226#define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS)                   \
227  return storeImpl(new (ArrayRef<Metadata *>(OPS).size())                      \
228                       CLASS(Context, Storage, OPS),                           \
229                   Storage, Context.pImpl->CLASS##s)
230
231DISubrange *DISubrange::getImpl(LLVMContext &Context, int64_t Count, int64_t Lo,
232                                StorageType Storage, bool ShouldCreate) {
233  DEFINE_GETIMPL_LOOKUP(DISubrange, (Count, Lo));
234  DEFINE_GETIMPL_STORE_NO_OPS(DISubrange, (Count, Lo));
235}
236
237DIEnumerator *DIEnumerator::getImpl(LLVMContext &Context, int64_t Value,
238                                    MDString *Name, StorageType Storage,
239                                    bool ShouldCreate) {
240  assert(isCanonical(Name) && "Expected canonical MDString");
241  DEFINE_GETIMPL_LOOKUP(DIEnumerator, (Value, getString(Name)));
242  Metadata *Ops[] = {Name};
243  DEFINE_GETIMPL_STORE(DIEnumerator, (Value), Ops);
244}
245
246DIBasicType *DIBasicType::getImpl(LLVMContext &Context, unsigned Tag,
247                                  MDString *Name, uint64_t SizeInBits,
248                                  uint64_t AlignInBits, unsigned Encoding,
249                                  StorageType Storage, bool ShouldCreate) {
250  assert(isCanonical(Name) && "Expected canonical MDString");
251  DEFINE_GETIMPL_LOOKUP(
252      DIBasicType, (Tag, getString(Name), SizeInBits, AlignInBits, Encoding));
253  Metadata *Ops[] = {nullptr, nullptr, Name};
254  DEFINE_GETIMPL_STORE(DIBasicType, (Tag, SizeInBits, AlignInBits, Encoding),
255                       Ops);
256}
257
258DIDerivedType *DIDerivedType::getImpl(
259    LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
260    unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
261    uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
262    Metadata *ExtraData, StorageType Storage, bool ShouldCreate) {
263  assert(isCanonical(Name) && "Expected canonical MDString");
264  DEFINE_GETIMPL_LOOKUP(DIDerivedType, (Tag, getString(Name), File, Line, Scope,
265                                        BaseType, SizeInBits, AlignInBits,
266                                        OffsetInBits, Flags, ExtraData));
267  Metadata *Ops[] = {File, Scope, Name, BaseType, ExtraData};
268  DEFINE_GETIMPL_STORE(
269      DIDerivedType, (Tag, Line, SizeInBits, AlignInBits, OffsetInBits, Flags),
270      Ops);
271}
272
273DICompositeType *DICompositeType::getImpl(
274    LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File,
275    unsigned Line, Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
276    uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
277    Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder,
278    Metadata *TemplateParams, MDString *Identifier, StorageType Storage,
279    bool ShouldCreate) {
280  assert(isCanonical(Name) && "Expected canonical MDString");
281  DEFINE_GETIMPL_LOOKUP(DICompositeType,
282                        (Tag, getString(Name), File, Line, Scope, BaseType,
283                         SizeInBits, AlignInBits, OffsetInBits, Flags, Elements,
284                         RuntimeLang, VTableHolder, TemplateParams,
285                         getString(Identifier)));
286  Metadata *Ops[] = {File,     Scope,        Name,           BaseType,
287                     Elements, VTableHolder, TemplateParams, Identifier};
288  DEFINE_GETIMPL_STORE(DICompositeType, (Tag, Line, RuntimeLang, SizeInBits,
289                                         AlignInBits, OffsetInBits, Flags),
290                       Ops);
291}
292
293DISubroutineType *DISubroutineType::getImpl(LLVMContext &Context,
294                                            unsigned Flags, Metadata *TypeArray,
295                                            StorageType Storage,
296                                            bool ShouldCreate) {
297  DEFINE_GETIMPL_LOOKUP(DISubroutineType, (Flags, TypeArray));
298  Metadata *Ops[] = {nullptr, nullptr, nullptr, TypeArray};
299  DEFINE_GETIMPL_STORE(DISubroutineType, (Flags), Ops);
300}
301
302DIFile *DIFile::getImpl(LLVMContext &Context, MDString *Filename,
303                        MDString *Directory, StorageType Storage,
304                        bool ShouldCreate) {
305  assert(isCanonical(Filename) && "Expected canonical MDString");
306  assert(isCanonical(Directory) && "Expected canonical MDString");
307  DEFINE_GETIMPL_LOOKUP(DIFile, (getString(Filename), getString(Directory)));
308  Metadata *Ops[] = {Filename, Directory};
309  DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIFile, Ops);
310}
311
312DICompileUnit *DICompileUnit::getImpl(
313    LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
314    MDString *Producer, bool IsOptimized, MDString *Flags,
315    unsigned RuntimeVersion, MDString *SplitDebugFilename,
316    unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
317    Metadata *Subprograms, Metadata *GlobalVariables,
318    Metadata *ImportedEntities, Metadata *Macros, uint64_t DWOId,
319    StorageType Storage, bool ShouldCreate) {
320  assert(Storage != Uniqued && "Cannot unique DICompileUnit");
321  assert(isCanonical(Producer) && "Expected canonical MDString");
322  assert(isCanonical(Flags) && "Expected canonical MDString");
323  assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString");
324
325  Metadata *Ops[] = {File, Producer, Flags, SplitDebugFilename, EnumTypes,
326                     RetainedTypes, Subprograms, GlobalVariables,
327                     ImportedEntities, Macros};
328  return storeImpl(new (ArrayRef<Metadata *>(Ops).size()) DICompileUnit(
329                       Context, Storage, SourceLanguage, IsOptimized,
330                       RuntimeVersion, EmissionKind, DWOId, Ops),
331                   Storage);
332}
333
334DISubprogram *DILocalScope::getSubprogram() const {
335  if (auto *Block = dyn_cast<DILexicalBlockBase>(this))
336    return Block->getScope()->getSubprogram();
337  return const_cast<DISubprogram *>(cast<DISubprogram>(this));
338}
339
340DISubprogram *DISubprogram::getImpl(
341    LLVMContext &Context, Metadata *Scope, MDString *Name,
342    MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
343    bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
344    Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex,
345    unsigned Flags, bool IsOptimized, Metadata *TemplateParams,
346    Metadata *Declaration, Metadata *Variables, StorageType Storage,
347    bool ShouldCreate) {
348  assert(isCanonical(Name) && "Expected canonical MDString");
349  assert(isCanonical(LinkageName) && "Expected canonical MDString");
350  DEFINE_GETIMPL_LOOKUP(DISubprogram,
351                        (Scope, getString(Name), getString(LinkageName), File,
352                         Line, Type, IsLocalToUnit, IsDefinition, ScopeLine,
353                         ContainingType, Virtuality, VirtualIndex, Flags,
354                         IsOptimized, TemplateParams, Declaration, Variables));
355  Metadata *Ops[] = {File,        Scope,    Name,           Name,
356                     LinkageName, Type,     ContainingType, TemplateParams,
357                     Declaration, Variables};
358  DEFINE_GETIMPL_STORE(DISubprogram,
359                       (Line, ScopeLine, Virtuality, VirtualIndex, Flags,
360                        IsLocalToUnit, IsDefinition, IsOptimized),
361                       Ops);
362}
363
364bool DISubprogram::describes(const Function *F) const {
365  assert(F && "Invalid function");
366  if (F->getSubprogram() == this)
367    return true;
368  StringRef Name = getLinkageName();
369  if (Name.empty())
370    Name = getName();
371  return F->getName() == Name;
372}
373
374DILexicalBlock *DILexicalBlock::getImpl(LLVMContext &Context, Metadata *Scope,
375                                        Metadata *File, unsigned Line,
376                                        unsigned Column, StorageType Storage,
377                                        bool ShouldCreate) {
378  // Fixup column.
379  adjustColumn(Column);
380
381  assert(Scope && "Expected scope");
382  DEFINE_GETIMPL_LOOKUP(DILexicalBlock, (Scope, File, Line, Column));
383  Metadata *Ops[] = {File, Scope};
384  DEFINE_GETIMPL_STORE(DILexicalBlock, (Line, Column), Ops);
385}
386
387DILexicalBlockFile *DILexicalBlockFile::getImpl(LLVMContext &Context,
388                                                Metadata *Scope, Metadata *File,
389                                                unsigned Discriminator,
390                                                StorageType Storage,
391                                                bool ShouldCreate) {
392  assert(Scope && "Expected scope");
393  DEFINE_GETIMPL_LOOKUP(DILexicalBlockFile, (Scope, File, Discriminator));
394  Metadata *Ops[] = {File, Scope};
395  DEFINE_GETIMPL_STORE(DILexicalBlockFile, (Discriminator), Ops);
396}
397
398DINamespace *DINamespace::getImpl(LLVMContext &Context, Metadata *Scope,
399                                  Metadata *File, MDString *Name, unsigned Line,
400                                  StorageType Storage, bool ShouldCreate) {
401  assert(isCanonical(Name) && "Expected canonical MDString");
402  DEFINE_GETIMPL_LOOKUP(DINamespace, (Scope, File, getString(Name), Line));
403  Metadata *Ops[] = {File, Scope, Name};
404  DEFINE_GETIMPL_STORE(DINamespace, (Line), Ops);
405}
406
407DIModule *DIModule::getImpl(LLVMContext &Context, Metadata *Scope,
408                            MDString *Name, MDString *ConfigurationMacros,
409                            MDString *IncludePath, MDString *ISysRoot,
410                            StorageType Storage, bool ShouldCreate) {
411  assert(isCanonical(Name) && "Expected canonical MDString");
412  DEFINE_GETIMPL_LOOKUP(DIModule,
413    (Scope, getString(Name), getString(ConfigurationMacros),
414     getString(IncludePath), getString(ISysRoot)));
415  Metadata *Ops[] = {Scope, Name, ConfigurationMacros, IncludePath, ISysRoot};
416  DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIModule, Ops);
417}
418
419DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context,
420                                                          MDString *Name,
421                                                          Metadata *Type,
422                                                          StorageType Storage,
423                                                          bool ShouldCreate) {
424  assert(isCanonical(Name) && "Expected canonical MDString");
425  DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (getString(Name), Type));
426  Metadata *Ops[] = {Name, Type};
427  DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DITemplateTypeParameter, Ops);
428}
429
430DITemplateValueParameter *DITemplateValueParameter::getImpl(
431    LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type,
432    Metadata *Value, StorageType Storage, bool ShouldCreate) {
433  assert(isCanonical(Name) && "Expected canonical MDString");
434  DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter,
435                        (Tag, getString(Name), Type, Value));
436  Metadata *Ops[] = {Name, Type, Value};
437  DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops);
438}
439
440DIGlobalVariable *
441DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
442                          MDString *LinkageName, Metadata *File, unsigned Line,
443                          Metadata *Type, bool IsLocalToUnit, bool IsDefinition,
444                          Metadata *Variable,
445                          Metadata *StaticDataMemberDeclaration,
446                          StorageType Storage, bool ShouldCreate) {
447  assert(isCanonical(Name) && "Expected canonical MDString");
448  assert(isCanonical(LinkageName) && "Expected canonical MDString");
449  DEFINE_GETIMPL_LOOKUP(DIGlobalVariable,
450                        (Scope, getString(Name), getString(LinkageName), File,
451                         Line, Type, IsLocalToUnit, IsDefinition, Variable,
452                         StaticDataMemberDeclaration));
453  Metadata *Ops[] = {Scope, Name,        File,     Type,
454                     Name,  LinkageName, Variable, StaticDataMemberDeclaration};
455  DEFINE_GETIMPL_STORE(DIGlobalVariable, (Line, IsLocalToUnit, IsDefinition),
456                       Ops);
457}
458
459DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, Metadata *Scope,
460                                          MDString *Name, Metadata *File,
461                                          unsigned Line, Metadata *Type,
462                                          unsigned Arg, unsigned Flags,
463                                          StorageType Storage,
464                                          bool ShouldCreate) {
465  // 64K ought to be enough for any frontend.
466  assert(Arg <= UINT16_MAX && "Expected argument number to fit in 16-bits");
467
468  assert(Scope && "Expected scope");
469  assert(isCanonical(Name) && "Expected canonical MDString");
470  DEFINE_GETIMPL_LOOKUP(DILocalVariable,
471                        (Scope, getString(Name), File, Line, Type, Arg, Flags));
472  Metadata *Ops[] = {Scope, Name, File, Type};
473  DEFINE_GETIMPL_STORE(DILocalVariable, (Line, Arg, Flags), Ops);
474}
475
476DIExpression *DIExpression::getImpl(LLVMContext &Context,
477                                    ArrayRef<uint64_t> Elements,
478                                    StorageType Storage, bool ShouldCreate) {
479  DEFINE_GETIMPL_LOOKUP(DIExpression, (Elements));
480  DEFINE_GETIMPL_STORE_NO_OPS(DIExpression, (Elements));
481}
482
483unsigned DIExpression::ExprOperand::getSize() const {
484  switch (getOp()) {
485  case dwarf::DW_OP_bit_piece:
486    return 3;
487  case dwarf::DW_OP_plus:
488  case dwarf::DW_OP_minus:
489    return 2;
490  default:
491    return 1;
492  }
493}
494
495bool DIExpression::isValid() const {
496  for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) {
497    // Check that there's space for the operand.
498    if (I->get() + I->getSize() > E->get())
499      return false;
500
501    // Check that the operand is valid.
502    switch (I->getOp()) {
503    default:
504      return false;
505    case dwarf::DW_OP_bit_piece:
506      // Piece expressions must be at the end.
507      return I->get() + I->getSize() == E->get();
508    case dwarf::DW_OP_plus:
509    case dwarf::DW_OP_minus:
510    case dwarf::DW_OP_deref:
511      break;
512    }
513  }
514  return true;
515}
516
517bool DIExpression::isBitPiece() const {
518  assert(isValid() && "Expected valid expression");
519  if (unsigned N = getNumElements())
520    if (N >= 3)
521      return getElement(N - 3) == dwarf::DW_OP_bit_piece;
522  return false;
523}
524
525uint64_t DIExpression::getBitPieceOffset() const {
526  assert(isBitPiece() && "Expected bit piece");
527  return getElement(getNumElements() - 2);
528}
529
530uint64_t DIExpression::getBitPieceSize() const {
531  assert(isBitPiece() && "Expected bit piece");
532  return getElement(getNumElements() - 1);
533}
534
535DIObjCProperty *DIObjCProperty::getImpl(
536    LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line,
537    MDString *GetterName, MDString *SetterName, unsigned Attributes,
538    Metadata *Type, StorageType Storage, bool ShouldCreate) {
539  assert(isCanonical(Name) && "Expected canonical MDString");
540  assert(isCanonical(GetterName) && "Expected canonical MDString");
541  assert(isCanonical(SetterName) && "Expected canonical MDString");
542  DEFINE_GETIMPL_LOOKUP(DIObjCProperty,
543                        (getString(Name), File, Line, getString(GetterName),
544                         getString(SetterName), Attributes, Type));
545  Metadata *Ops[] = {Name, File, GetterName, SetterName, Type};
546  DEFINE_GETIMPL_STORE(DIObjCProperty, (Line, Attributes), Ops);
547}
548
549DIImportedEntity *DIImportedEntity::getImpl(LLVMContext &Context, unsigned Tag,
550                                            Metadata *Scope, Metadata *Entity,
551                                            unsigned Line, MDString *Name,
552                                            StorageType Storage,
553                                            bool ShouldCreate) {
554  assert(isCanonical(Name) && "Expected canonical MDString");
555  DEFINE_GETIMPL_LOOKUP(DIImportedEntity,
556                        (Tag, Scope, Entity, Line, getString(Name)));
557  Metadata *Ops[] = {Scope, Entity, Name};
558  DEFINE_GETIMPL_STORE(DIImportedEntity, (Tag, Line), Ops);
559}
560
561DIMacro *DIMacro::getImpl(LLVMContext &Context, unsigned MIType,
562                          unsigned Line, MDString *Name, MDString *Value,
563                          StorageType Storage, bool ShouldCreate) {
564  assert(isCanonical(Name) && "Expected canonical MDString");
565  DEFINE_GETIMPL_LOOKUP(DIMacro,
566                        (MIType, Line, getString(Name), getString(Value)));
567  Metadata *Ops[] = { Name, Value };
568  DEFINE_GETIMPL_STORE(DIMacro, (MIType, Line), Ops);
569}
570
571DIMacroFile *DIMacroFile::getImpl(LLVMContext &Context, unsigned MIType,
572                                  unsigned Line, Metadata *File,
573                                  Metadata *Elements, StorageType Storage,
574                                  bool ShouldCreate) {
575  DEFINE_GETIMPL_LOOKUP(DIMacroFile,
576                        (MIType, Line, File, Elements));
577  Metadata *Ops[] = { File, Elements };
578  DEFINE_GETIMPL_STORE(DIMacroFile, (MIType, Line), Ops);
579}
580
581