1 //===--- llvm/Analysis/DebugInfo.h - Debug Information Helpers --*- C++ -*-===//
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 defines a bunch of datatypes that are useful for creating and
11 // walking debug info in LLVM IR form. They essentially provide wrappers around
12 // the information in the global variables that's needed when constructing the
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_ANALYSIS_DEBUGINFO_H
18 #define LLVM_ANALYSIS_DEBUGINFO_H
20 #include "llvm/Metadata.h"
21 #include "llvm/Target/TargetMachine.h"
22 #include "llvm/ADT/StringMap.h"
23 #include "llvm/ADT/DenseMap.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/SmallPtrSet.h"
26 #include "llvm/Support/Dwarf.h"
27 #include "llvm/Support/ValueHandle.h"
37 struct DbgStopPointInst;
38 struct DbgDeclareInst;
39 struct DbgFuncStartInst;
40 struct DbgRegionStartInst;
41 struct DbgRegionEndInst;
43 struct DebugLocTracker;
47 /// DIDescriptor - A thin wraper around MDNode to access encoded debug info. This should not
48 /// be stored in a container, because underly MDNode may change in certain situations.
53 /// DIDescriptor constructor. If the specified node is non-null, check
54 /// to make sure that the tag in the descriptor matches 'RequiredTag'. If
55 /// not, the debug info is corrupt and we ignore it.
56 DIDescriptor(MDNode *N, unsigned RequiredTag);
58 StringRef getStringField(unsigned Elt) const;
59 unsigned getUnsignedField(unsigned Elt) const {
60 return (unsigned)getUInt64Field(Elt);
62 uint64_t getUInt64Field(unsigned Elt) const;
63 DIDescriptor getDescriptorField(unsigned Elt) const;
65 template <typename DescTy>
66 DescTy getFieldAs(unsigned Elt) const {
67 return DescTy(getDescriptorField(Elt).getNode());
70 GlobalVariable *getGlobalVariableField(unsigned Elt) const;
73 explicit DIDescriptor() : DbgNode(0) {}
74 explicit DIDescriptor(MDNode *N) : DbgNode(N) {}
76 bool isNull() const { return DbgNode == 0; }
78 MDNode *getNode() const { return DbgNode; }
80 unsigned getVersion() const {
81 return getUnsignedField(0) & LLVMDebugVersionMask;
84 unsigned getTag() const {
85 return getUnsignedField(0) & ~LLVMDebugVersionMask;
88 /// ValidDebugInfo - Return true if N represents valid debug info value.
89 static bool ValidDebugInfo(MDNode *N, CodeGenOpt::Level OptLevel);
91 /// dump - print descriptor.
94 bool isDerivedType() const;
95 bool isCompositeType() const;
96 bool isBasicType() const;
97 bool isVariable() const;
98 bool isSubprogram() const;
99 bool isGlobalVariable() const;
100 bool isScope() const;
101 bool isCompileUnit() const;
102 bool isLexicalBlock() const;
103 bool isSubrange() const;
104 bool isEnumerator() const;
106 bool isGlobal() const;
109 /// DISubrange - This is used to represent ranges, for array bounds.
110 class DISubrange : public DIDescriptor {
112 explicit DISubrange(MDNode *N = 0)
113 : DIDescriptor(N, dwarf::DW_TAG_subrange_type) {}
115 int64_t getLo() const { return (int64_t)getUInt64Field(1); }
116 int64_t getHi() const { return (int64_t)getUInt64Field(2); }
119 /// DIArray - This descriptor holds an array of descriptors.
120 class DIArray : public DIDescriptor {
122 explicit DIArray(MDNode *N = 0)
125 unsigned getNumElements() const;
126 DIDescriptor getElement(unsigned Idx) const {
127 return getDescriptorField(Idx);
131 /// DIScope - A base class for various scopes.
132 class DIScope : public DIDescriptor {
134 explicit DIScope(MDNode *N = 0) : DIDescriptor (N) {
135 if (DbgNode && !isScope())
138 virtual ~DIScope() {}
140 StringRef getFilename() const;
141 StringRef getDirectory() const;
144 /// DICompileUnit - A wrapper for a compile unit.
145 class DICompileUnit : public DIScope {
147 explicit DICompileUnit(MDNode *N = 0) : DIScope(N) {
148 if (DbgNode && !isCompileUnit())
152 unsigned getLanguage() const { return getUnsignedField(2); }
153 StringRef getFilename() const { return getStringField(3); }
154 StringRef getDirectory() const { return getStringField(4); }
155 StringRef getProducer() const { return getStringField(5); }
157 /// isMain - Each input file is encoded as a separate compile unit in LLVM
158 /// debugging information output. However, many target specific tool chains
159 /// prefer to encode only one compile unit in an object file. In this
160 /// situation, the LLVM code generator will include debugging information
161 /// entities in the compile unit that is marked as main compile unit. The
162 /// code generator accepts maximum one main compile unit per module. If a
163 /// module does not contain any main compile unit then the code generator
164 /// will emit multiple compile units in the output object file.
166 bool isMain() const { return getUnsignedField(6); }
167 bool isOptimized() const { return getUnsignedField(7); }
168 StringRef getFlags() const { return getStringField(8); }
169 unsigned getRunTimeVersion() const { return getUnsignedField(9); }
171 /// Verify - Verify that a compile unit is well formed.
174 /// dump - print compile unit.
178 /// DIEnumerator - A wrapper for an enumerator (e.g. X and Y in 'enum {X,Y}').
179 /// FIXME: it seems strange that this doesn't have either a reference to the
180 /// type/precision or a file/line pair for location info.
181 class DIEnumerator : public DIDescriptor {
183 explicit DIEnumerator(MDNode *N = 0)
184 : DIDescriptor(N, dwarf::DW_TAG_enumerator) {}
186 StringRef getName() const { return getStringField(1); }
187 uint64_t getEnumValue() const { return getUInt64Field(2); }
190 /// DIType - This is a wrapper for a type.
191 /// FIXME: Types should be factored much better so that CV qualifiers and
192 /// others do not require a huge and empty descriptor full of zeros.
193 class DIType : public DIDescriptor {
196 FlagPrivate = 1 << 0,
197 FlagProtected = 1 << 1,
198 FlagFwdDecl = 1 << 2,
199 FlagAppleBlock = 1 << 3,
200 FlagBlockByrefStruct = 1 << 4
204 DIType(MDNode *N, unsigned Tag)
205 : DIDescriptor(N, Tag) {}
206 // This ctor is used when the Tag has already been validated by a derived
208 DIType(MDNode *N, bool, bool) : DIDescriptor(N) {}
212 /// Verify - Verify that a type descriptor is well formed.
215 explicit DIType(MDNode *N);
219 DIDescriptor getContext() const { return getDescriptorField(1); }
220 StringRef getName() const { return getStringField(2); }
221 DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
222 unsigned getLineNumber() const { return getUnsignedField(4); }
223 uint64_t getSizeInBits() const { return getUInt64Field(5); }
224 uint64_t getAlignInBits() const { return getUInt64Field(6); }
225 // FIXME: Offset is only used for DW_TAG_member nodes. Making every type
226 // carry this is just plain insane.
227 uint64_t getOffsetInBits() const { return getUInt64Field(7); }
228 unsigned getFlags() const { return getUnsignedField(8); }
229 bool isPrivate() const {
230 return (getFlags() & FlagPrivate) != 0;
232 bool isProtected() const {
233 return (getFlags() & FlagProtected) != 0;
235 bool isForwardDecl() const {
236 return (getFlags() & FlagFwdDecl) != 0;
238 // isAppleBlock - Return true if this is the Apple Blocks extension.
239 bool isAppleBlockExtension() const {
240 return (getFlags() & FlagAppleBlock) != 0;
242 bool isBlockByrefStruct() const {
243 return (getFlags() & FlagBlockByrefStruct) != 0;
246 /// dump - print type.
250 /// DIBasicType - A basic type, like 'int' or 'float'.
251 class DIBasicType : public DIType {
253 explicit DIBasicType(MDNode *N = 0)
254 : DIType(N, dwarf::DW_TAG_base_type) {}
256 unsigned getEncoding() const { return getUnsignedField(9); }
258 /// dump - print basic type.
262 /// DIDerivedType - A simple derived type, like a const qualified type,
263 /// a typedef, a pointer or reference, etc.
264 class DIDerivedType : public DIType {
266 explicit DIDerivedType(MDNode *N, bool, bool)
267 : DIType(N, true, true) {}
269 explicit DIDerivedType(MDNode *N = 0)
270 : DIType(N, true, true) {
271 if (DbgNode && !isDerivedType())
275 DIType getTypeDerivedFrom() const { return getFieldAs<DIType>(9); }
277 /// getOriginalTypeSize - If this type is derived from a base type then
278 /// return base type size.
279 uint64_t getOriginalTypeSize() const;
280 /// dump - print derived type.
283 /// replaceAllUsesWith - Replace all uses of debug info referenced by
284 /// this descriptor. After this completes, the current debug info value
286 void replaceAllUsesWith(DIDescriptor &D);
289 /// DICompositeType - This descriptor holds a type that can refer to multiple
290 /// other types, like a function or struct.
291 /// FIXME: Why is this a DIDerivedType??
292 class DICompositeType : public DIDerivedType {
294 explicit DICompositeType(MDNode *N = 0)
295 : DIDerivedType(N, true, true) {
296 if (N && !isCompositeType())
300 DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
301 unsigned getRunTimeLang() const { return getUnsignedField(11); }
303 /// Verify - Verify that a composite type descriptor is well formed.
306 /// dump - print composite type.
310 /// DIGlobal - This is a common class for global variables and subprograms.
311 class DIGlobal : public DIDescriptor {
313 explicit DIGlobal(MDNode *N, unsigned RequiredTag)
314 : DIDescriptor(N, RequiredTag) {}
317 virtual ~DIGlobal() {}
319 DIDescriptor getContext() const { return getDescriptorField(2); }
320 StringRef getName() const { return getStringField(3); }
321 StringRef getDisplayName() const { return getStringField(4); }
322 StringRef getLinkageName() const { return getStringField(5); }
323 DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(6); }
324 unsigned getLineNumber() const { return getUnsignedField(7); }
325 DIType getType() const { return getFieldAs<DIType>(8); }
327 /// isLocalToUnit - Return true if this subprogram is local to the current
328 /// compile unit, like 'static' in C.
329 unsigned isLocalToUnit() const { return getUnsignedField(9); }
330 unsigned isDefinition() const { return getUnsignedField(10); }
332 /// dump - print global.
336 /// DISubprogram - This is a wrapper for a subprogram (e.g. a function).
337 class DISubprogram : public DIScope {
339 explicit DISubprogram(MDNode *N = 0) : DIScope(N) {
340 if (DbgNode && !isSubprogram())
344 DIDescriptor getContext() const { return getDescriptorField(2); }
345 StringRef getName() const { return getStringField(3); }
346 StringRef getDisplayName() const { return getStringField(4); }
347 StringRef getLinkageName() const { return getStringField(5); }
348 DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(6); }
349 unsigned getLineNumber() const { return getUnsignedField(7); }
350 DICompositeType getType() const { return getFieldAs<DICompositeType>(8); }
352 /// getReturnTypeName - Subprogram return types are encoded either as
353 /// DIType or as DICompositeType.
354 StringRef getReturnTypeName() const {
355 DICompositeType DCT(getFieldAs<DICompositeType>(8));
357 DIArray A = DCT.getTypeArray();
358 DIType T(A.getElement(0).getNode());
361 DIType T(getFieldAs<DIType>(8));
365 /// isLocalToUnit - Return true if this subprogram is local to the current
366 /// compile unit, like 'static' in C.
367 unsigned isLocalToUnit() const { return getUnsignedField(9); }
368 unsigned isDefinition() const { return getUnsignedField(10); }
369 StringRef getFilename() const { return getCompileUnit().getFilename();}
370 StringRef getDirectory() const { return getCompileUnit().getDirectory();}
372 /// Verify - Verify that a subprogram descriptor is well formed.
375 /// dump - print subprogram.
378 /// describes - Return true if this subprogram provides debugging
379 /// information for the function F.
380 bool describes(const Function *F);
383 /// DIGlobalVariable - This is a wrapper for a global variable.
384 class DIGlobalVariable : public DIGlobal {
386 explicit DIGlobalVariable(MDNode *N = 0)
387 : DIGlobal(N, dwarf::DW_TAG_variable) {}
389 GlobalVariable *getGlobal() const { return getGlobalVariableField(11); }
391 /// Verify - Verify that a global variable descriptor is well formed.
394 /// dump - print global variable.
398 /// DIVariable - This is a wrapper for a variable (e.g. parameter, local,
400 class DIVariable : public DIDescriptor {
402 explicit DIVariable(MDNode *N = 0)
404 if (DbgNode && !isVariable())
408 DIDescriptor getContext() const { return getDescriptorField(1); }
409 StringRef getName() const { return getStringField(2); }
410 DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
411 unsigned getLineNumber() const { return getUnsignedField(4); }
412 DIType getType() const { return getFieldAs<DIType>(5); }
415 /// Verify - Verify that a variable descriptor is well formed.
418 /// HasComplexAddr - Return true if the variable has a complex address.
419 bool hasComplexAddress() const {
420 return getNumAddrElements() > 0;
423 unsigned getNumAddrElements() const { return DbgNode->getNumElements()-6; }
425 uint64_t getAddrElement(unsigned Idx) const {
426 return getUInt64Field(Idx+6);
429 /// isBlockByrefVariable - Return true if the variable was declared as
430 /// a "__block" variable (Apple Blocks).
431 bool isBlockByrefVariable() const {
432 return getType().isBlockByrefStruct();
435 /// dump - print variable.
439 /// DILexicalBlock - This is a wrapper for a lexical block.
440 class DILexicalBlock : public DIScope {
442 explicit DILexicalBlock(MDNode *N = 0) : DIScope(N) {
443 if (DbgNode && !isLexicalBlock())
446 DIScope getContext() const { return getFieldAs<DIScope>(1); }
447 StringRef getDirectory() const { return getContext().getDirectory(); }
448 StringRef getFilename() const { return getContext().getFilename(); }
451 /// DILocation - This object holds location information. This object
452 /// is not associated with any DWARF tag.
453 class DILocation : public DIDescriptor {
455 explicit DILocation(MDNode *N) : DIDescriptor(N) { ; }
457 unsigned getLineNumber() const { return getUnsignedField(0); }
458 unsigned getColumnNumber() const { return getUnsignedField(1); }
459 DIScope getScope() const { return getFieldAs<DIScope>(2); }
460 DILocation getOrigLocation() const { return getFieldAs<DILocation>(3); }
461 StringRef getFilename() const { return getScope().getFilename(); }
462 StringRef getDirectory() const { return getScope().getDirectory(); }
465 /// DIFactory - This object assists with the construction of the various
469 LLVMContext& VMContext;
471 const Type *EmptyStructPtr; // "{}*".
472 Function *DeclareFn; // llvm.dbg.declare
474 DIFactory(const DIFactory &); // DO NOT IMPLEMENT
475 void operator=(const DIFactory&); // DO NOT IMPLEMENT
477 enum ComplexAddrKind { OpPlus=1, OpDeref };
479 explicit DIFactory(Module &m);
481 /// GetOrCreateArray - Create an descriptor for an array of descriptors.
482 /// This implicitly uniques the arrays created.
483 DIArray GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys);
485 /// GetOrCreateSubrange - Create a descriptor for a value range. This
486 /// implicitly uniques the values returned.
487 DISubrange GetOrCreateSubrange(int64_t Lo, int64_t Hi);
489 /// CreateCompileUnit - Create a new descriptor for the specified compile
491 DICompileUnit CreateCompileUnit(unsigned LangID,
496 bool isOptimized = false,
497 StringRef Flags = "",
498 unsigned RunTimeVer = 0);
500 /// CreateEnumerator - Create a single enumerator value.
501 DIEnumerator CreateEnumerator(StringRef Name, uint64_t Val);
503 /// CreateBasicType - Create a basic type like int, float, etc.
504 DIBasicType CreateBasicType(DIDescriptor Context, StringRef Name,
505 DICompileUnit CompileUnit, unsigned LineNumber,
506 uint64_t SizeInBits, uint64_t AlignInBits,
507 uint64_t OffsetInBits, unsigned Flags,
510 /// CreateBasicType - Create a basic type like int, float, etc.
511 DIBasicType CreateBasicTypeEx(DIDescriptor Context, StringRef Name,
512 DICompileUnit CompileUnit, unsigned LineNumber,
513 Constant *SizeInBits, Constant *AlignInBits,
514 Constant *OffsetInBits, unsigned Flags,
517 /// CreateDerivedType - Create a derived type like const qualified type,
518 /// pointer, typedef, etc.
519 DIDerivedType CreateDerivedType(unsigned Tag, DIDescriptor Context,
521 DICompileUnit CompileUnit,
523 uint64_t SizeInBits, uint64_t AlignInBits,
524 uint64_t OffsetInBits, unsigned Flags,
527 /// CreateDerivedType - Create a derived type like const qualified type,
528 /// pointer, typedef, etc.
529 DIDerivedType CreateDerivedTypeEx(unsigned Tag, DIDescriptor Context,
531 DICompileUnit CompileUnit,
533 Constant *SizeInBits, Constant *AlignInBits,
534 Constant *OffsetInBits, unsigned Flags,
537 /// CreateCompositeType - Create a composite type like array, struct, etc.
538 DICompositeType CreateCompositeType(unsigned Tag, DIDescriptor Context,
540 DICompileUnit CompileUnit,
543 uint64_t AlignInBits,
544 uint64_t OffsetInBits, unsigned Flags,
547 unsigned RunTimeLang = 0);
549 /// CreateCompositeType - Create a composite type like array, struct, etc.
550 DICompositeType CreateCompositeTypeEx(unsigned Tag, DIDescriptor Context,
552 DICompileUnit CompileUnit,
554 Constant *SizeInBits,
555 Constant *AlignInBits,
556 Constant *OffsetInBits, unsigned Flags,
559 unsigned RunTimeLang = 0);
561 /// CreateSubprogram - Create a new descriptor for the specified subprogram.
562 /// See comments in DISubprogram for descriptions of these fields.
563 DISubprogram CreateSubprogram(DIDescriptor Context, StringRef Name,
564 StringRef DisplayName,
565 StringRef LinkageName,
566 DICompileUnit CompileUnit, unsigned LineNo,
567 DIType Type, bool isLocalToUnit,
570 /// CreateGlobalVariable - Create a new descriptor for the specified global.
572 CreateGlobalVariable(DIDescriptor Context, StringRef Name,
573 StringRef DisplayName,
574 StringRef LinkageName,
575 DICompileUnit CompileUnit,
576 unsigned LineNo, DIType Type, bool isLocalToUnit,
577 bool isDefinition, llvm::GlobalVariable *GV);
579 /// CreateVariable - Create a new descriptor for the specified variable.
580 DIVariable CreateVariable(unsigned Tag, DIDescriptor Context,
582 DICompileUnit CompileUnit, unsigned LineNo,
585 /// CreateComplexVariable - Create a new descriptor for the specified
586 /// variable which has a complex address expression for its address.
587 DIVariable CreateComplexVariable(unsigned Tag, DIDescriptor Context,
588 const std::string &Name,
589 DICompileUnit CompileUnit, unsigned LineNo,
591 SmallVector<Value *, 9> &addr);
593 /// CreateLexicalBlock - This creates a descriptor for a lexical block
594 /// with the specified parent context.
595 DILexicalBlock CreateLexicalBlock(DIDescriptor Context);
597 /// CreateLocation - Creates a debug info location.
598 DILocation CreateLocation(unsigned LineNo, unsigned ColumnNo,
599 DIScope S, DILocation OrigLoc);
601 /// CreateLocation - Creates a debug info location.
602 DILocation CreateLocation(unsigned LineNo, unsigned ColumnNo,
603 DIScope S, MDNode *OrigLoc = 0);
605 /// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
606 Instruction *InsertDeclare(llvm::Value *Storage, DIVariable D,
607 BasicBlock *InsertAtEnd);
609 /// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
610 Instruction *InsertDeclare(llvm::Value *Storage, DIVariable D,
611 Instruction *InsertBefore);
614 Constant *GetTagConstant(unsigned TAG);
617 /// Finds the stoppoint coressponding to this instruction, that is the
618 /// stoppoint that dominates this instruction
619 const DbgStopPointInst *findStopPoint(const Instruction *Inst);
621 /// Finds the stoppoint corresponding to first real (non-debug intrinsic)
622 /// instruction in this Basic Block, and returns the stoppoint for it.
623 const DbgStopPointInst *findBBStopPoint(const BasicBlock *BB);
625 /// Finds the dbg.declare intrinsic corresponding to this value if any.
626 /// It looks through pointer casts too.
627 const DbgDeclareInst *findDbgDeclare(const Value *V, bool stripCasts = true);
629 /// Find the debug info descriptor corresponding to this global variable.
630 Value *findDbgGlobalDeclare(GlobalVariable *V);
632 bool getLocationInfo(const Value *V, std::string &DisplayName,
633 std::string &Type, unsigned &LineNo, std::string &File,
636 /// isValidDebugInfoIntrinsic - Return true if SPI is a valid debug
638 bool isValidDebugInfoIntrinsic(DbgStopPointInst &SPI,
639 CodeGenOpt::Level OptLev);
641 /// isValidDebugInfoIntrinsic - Return true if FSI is a valid debug
643 bool isValidDebugInfoIntrinsic(DbgFuncStartInst &FSI,
644 CodeGenOpt::Level OptLev);
646 /// isValidDebugInfoIntrinsic - Return true if RSI is a valid debug
648 bool isValidDebugInfoIntrinsic(DbgRegionStartInst &RSI,
649 CodeGenOpt::Level OptLev);
651 /// isValidDebugInfoIntrinsic - Return true if REI is a valid debug
653 bool isValidDebugInfoIntrinsic(DbgRegionEndInst &REI,
654 CodeGenOpt::Level OptLev);
656 /// isValidDebugInfoIntrinsic - Return true if DI is a valid debug
658 bool isValidDebugInfoIntrinsic(DbgDeclareInst &DI,
659 CodeGenOpt::Level OptLev);
661 /// ExtractDebugLocation - Extract debug location information
662 /// from llvm.dbg.stoppoint intrinsic.
663 DebugLoc ExtractDebugLocation(DbgStopPointInst &SPI,
664 DebugLocTracker &DebugLocInfo);
666 /// ExtractDebugLocation - Extract debug location information
668 DebugLoc ExtractDebugLocation(DILocation &Loc,
669 DebugLocTracker &DebugLocInfo);
671 /// ExtractDebugLocation - Extract debug location information
672 /// from llvm.dbg.func_start intrinsic.
673 DebugLoc ExtractDebugLocation(DbgFuncStartInst &FSI,
674 DebugLocTracker &DebugLocInfo);
676 /// getDISubprogram - Find subprogram that is enclosing this scope.
677 DISubprogram getDISubprogram(MDNode *Scope);
679 /// getDICompositeType - Find underlying composite type.
680 DICompositeType getDICompositeType(DIType T);
682 class DebugInfoFinder {
685 /// processModule - Process entire module and collect debug info
687 void processModule(Module &M);
690 /// processType - Process DIType.
691 void processType(DIType DT);
693 /// processLexicalBlock - Process DILexicalBlock.
694 void processLexicalBlock(DILexicalBlock LB);
696 /// processSubprogram - Process DISubprogram.
697 void processSubprogram(DISubprogram SP);
699 /// processDeclare - Process DbgDeclareInst.
700 void processDeclare(DbgDeclareInst *DDI);
702 /// processLocation - Process DILocation.
703 void processLocation(DILocation Loc);
705 /// addCompileUnit - Add compile unit into CUs.
706 bool addCompileUnit(DICompileUnit CU);
708 /// addGlobalVariable - Add global variable into GVs.
709 bool addGlobalVariable(DIGlobalVariable DIG);
711 // addSubprogram - Add subprgoram into SPs.
712 bool addSubprogram(DISubprogram SP);
714 /// addType - Add type into Tys.
715 bool addType(DIType DT);
718 typedef SmallVector<MDNode *, 8>::iterator iterator;
719 iterator compile_unit_begin() { return CUs.begin(); }
720 iterator compile_unit_end() { return CUs.end(); }
721 iterator subprogram_begin() { return SPs.begin(); }
722 iterator subprogram_end() { return SPs.end(); }
723 iterator global_variable_begin() { return GVs.begin(); }
724 iterator global_variable_end() { return GVs.end(); }
725 iterator type_begin() { return TYs.begin(); }
726 iterator type_end() { return TYs.end(); }
728 unsigned compile_unit_count() { return CUs.size(); }
729 unsigned global_variable_count() { return GVs.size(); }
730 unsigned subprogram_count() { return SPs.size(); }
731 unsigned type_count() { return TYs.size(); }
734 SmallVector<MDNode *, 8> CUs; // Compile Units
735 SmallVector<MDNode *, 8> SPs; // Subprograms
736 SmallVector<MDNode *, 8> GVs; // Global Variables;
737 SmallVector<MDNode *, 8> TYs; // Types
738 SmallPtrSet<MDNode *, 64> NodesSeen;
740 } // end namespace llvm