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 const char *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 const char *getFilename() const;
141 const char *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 const char *getFilename() const { return getStringField(3); }
154 const char *getDirectory() const { return getStringField(4); }
155 const char *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 const char *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 const char *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 const char *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 const char *getName() const { return getStringField(3); }
321 const char *getDisplayName() const { return getStringField(4); }
322 const char *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 const char *getName() const { return getStringField(3); }
346 const char *getDisplayName() const { return getStringField(4); }
347 const char *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 const char *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 const char *getFilename() const { return getCompileUnit().getFilename();}
370 const char *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 const char *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 const char *getDirectory() const { return getContext().getDirectory(); }
448 const char *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 const char *getFilename() const { return getScope().getFilename(); }
462 const char *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,
492 const char * Filename,
493 const char * Directory,
494 const char * Producer,
496 bool isOptimized = false,
497 const char *Flags = "",
498 unsigned RunTimeVer = 0);
500 /// CreateEnumerator - Create a single enumerator value.
501 DIEnumerator CreateEnumerator(const char * Name, uint64_t Val);
503 /// CreateBasicType - Create a basic type like int, float, etc.
504 DIBasicType CreateBasicType(DIDescriptor Context, const char * 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, const char * 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, const char * Name,
564 const char * DisplayName,
565 const char * 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, const char * Name,
573 const char * DisplayName,
574 const char * 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