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_DEBUGINFO_H
18 #define LLVM_DEBUGINFO_H
20 #include "llvm/ADT/SmallPtrSet.h"
21 #include "llvm/ADT/SmallVector.h"
22 #include "llvm/ADT/StringRef.h"
23 #include "llvm/Support/Dwarf.h"
44 class DILexicalBlockFile;
49 /// DIDescriptor - A thin wraper around MDNode to access encoded debug info.
50 /// This should not be stored in a container, because the underlying MDNode
51 /// may change in certain situations.
56 FlagProtected = 1 << 1,
58 FlagAppleBlock = 1 << 3,
59 FlagBlockByrefStruct = 1 << 4,
61 FlagArtificial = 1 << 6,
62 FlagExplicit = 1 << 7,
63 FlagPrototyped = 1 << 8,
64 FlagObjcClassComplete = 1 << 9,
65 FlagObjectPointer = 1 << 10,
67 FlagStaticMember = 1 << 12,
68 FlagIndirectVariable = 1 << 13
71 const MDNode *DbgNode;
73 StringRef getStringField(unsigned Elt) const;
74 unsigned getUnsignedField(unsigned Elt) const {
75 return (unsigned)getUInt64Field(Elt);
77 uint64_t getUInt64Field(unsigned Elt) const;
78 int64_t getInt64Field(unsigned Elt) const;
79 DIDescriptor getDescriptorField(unsigned Elt) const;
81 template <typename DescTy>
82 DescTy getFieldAs(unsigned Elt) const {
83 return DescTy(getDescriptorField(Elt));
86 GlobalVariable *getGlobalVariableField(unsigned Elt) const;
87 Constant *getConstantField(unsigned Elt) const;
88 Function *getFunctionField(unsigned Elt) const;
89 void replaceFunctionField(unsigned Elt, Function *F);
92 explicit DIDescriptor() : DbgNode(0) {}
93 explicit DIDescriptor(const MDNode *N) : DbgNode(N) {}
94 explicit DIDescriptor(const DIFile F);
95 explicit DIDescriptor(const DISubprogram F);
96 explicit DIDescriptor(const DILexicalBlockFile F);
97 explicit DIDescriptor(const DILexicalBlock F);
98 explicit DIDescriptor(const DIVariable F);
99 explicit DIDescriptor(const DIType F);
103 operator MDNode *() const { return const_cast<MDNode*>(DbgNode); }
104 MDNode *operator ->() const { return const_cast<MDNode*>(DbgNode); }
106 // An explicit operator bool so that we can do testing of DI values
108 // FIXME: This operator bool isn't actually protecting anything at the
109 // moment due to the conversion operator above making DIDescriptor nodes
110 // implicitly convertable to bool.
111 LLVM_EXPLICIT operator bool() const { return DbgNode != 0; }
113 bool operator==(DIDescriptor Other) const {
114 return DbgNode == Other.DbgNode;
116 bool operator!=(DIDescriptor Other) const {
117 return !operator==(Other);
120 unsigned getTag() const {
121 return getUnsignedField(0) & ~LLVMDebugVersionMask;
124 bool isDerivedType() const;
125 bool isCompositeType() const;
126 bool isBasicType() const;
127 bool isVariable() const;
128 bool isSubprogram() const;
129 bool isGlobalVariable() const;
130 bool isScope() const;
132 bool isCompileUnit() const;
133 bool isNameSpace() const;
134 bool isLexicalBlockFile() const;
135 bool isLexicalBlock() const;
136 bool isSubrange() const;
137 bool isEnumerator() const;
139 bool isGlobal() const;
140 bool isUnspecifiedParameter() const;
141 bool isTemplateTypeParameter() const;
142 bool isTemplateValueParameter() const;
143 bool isObjCProperty() const;
144 bool isImportedEntity() const;
146 /// print - print descriptor.
147 void print(raw_ostream &OS) const;
149 /// dump - print descriptor to dbgs() with a newline.
153 /// DISubrange - This is used to represent ranges, for array bounds.
154 class DISubrange : public DIDescriptor {
155 friend class DIDescriptor;
156 void printInternal(raw_ostream &OS) const;
158 explicit DISubrange(const MDNode *N = 0) : DIDescriptor(N) {}
160 int64_t getLo() const { return getInt64Field(1); }
161 int64_t getCount() const { return getInt64Field(2); }
165 /// DIArray - This descriptor holds an array of descriptors.
166 class DIArray : public DIDescriptor {
168 explicit DIArray(const MDNode *N = 0)
171 unsigned getNumElements() const;
172 DIDescriptor getElement(unsigned Idx) const {
173 return getDescriptorField(Idx);
177 /// DIEnumerator - A wrapper for an enumerator (e.g. X and Y in 'enum {X,Y}').
178 /// FIXME: it seems strange that this doesn't have either a reference to the
179 /// type/precision or a file/line pair for location info.
180 class DIEnumerator : public DIDescriptor {
181 friend class DIDescriptor;
182 void printInternal(raw_ostream &OS) const;
184 explicit DIEnumerator(const MDNode *N = 0) : DIDescriptor(N) {}
186 StringRef getName() const { return getStringField(1); }
187 int64_t getEnumValue() const { return getInt64Field(2); }
191 /// DIScope - A base class for various scopes.
192 class DIScope : public DIDescriptor {
194 friend class DIDescriptor;
195 void printInternal(raw_ostream &OS) const;
197 explicit DIScope(const MDNode *N = 0) : DIDescriptor (N) {}
199 /// Set the filename by allocating a new string MDNode for
200 /// it and attaching it to the underlying node.
201 void setFilename(StringRef Name, LLVMContext &Context);
202 StringRef getFilename() const;
203 StringRef getDirectory() const;
206 /// DIType - This is a wrapper for a type.
207 /// FIXME: Types should be factored much better so that CV qualifiers and
208 /// others do not require a huge and empty descriptor full of zeros.
209 class DIType : public DIScope {
211 friend class DIDescriptor;
212 void printInternal(raw_ostream &OS) const;
213 // This ctor is used when the Tag has already been validated by a derived
215 DIType(const MDNode *N, bool, bool) : DIScope(N) {}
217 /// Verify - Verify that a type descriptor is well formed.
219 explicit DIType(const MDNode *N);
222 DIScope getContext() const { return getFieldAs<DIScope>(2); }
223 StringRef getName() const { return getStringField(3); }
224 unsigned getLineNumber() const { return getUnsignedField(4); }
225 uint64_t getSizeInBits() const { return getUInt64Field(5); }
226 uint64_t getAlignInBits() const { return getUInt64Field(6); }
227 // FIXME: Offset is only used for DW_TAG_member nodes. Making every type
228 // carry this is just plain insane.
229 uint64_t getOffsetInBits() const { return getUInt64Field(7); }
230 unsigned getFlags() const { return getUnsignedField(8); }
231 bool isPrivate() const {
232 return (getFlags() & FlagPrivate) != 0;
234 bool isProtected() const {
235 return (getFlags() & FlagProtected) != 0;
237 bool isForwardDecl() const {
238 return (getFlags() & FlagFwdDecl) != 0;
240 // isAppleBlock - Return true if this is the Apple Blocks extension.
241 bool isAppleBlockExtension() const {
242 return (getFlags() & FlagAppleBlock) != 0;
244 bool isBlockByrefStruct() const {
245 return (getFlags() & FlagBlockByrefStruct) != 0;
247 bool isVirtual() const {
248 return (getFlags() & FlagVirtual) != 0;
250 bool isArtificial() const {
251 return (getFlags() & FlagArtificial) != 0;
253 bool isObjectPointer() const {
254 return (getFlags() & FlagObjectPointer) != 0;
256 bool isObjcClassComplete() const {
257 return (getFlags() & FlagObjcClassComplete) != 0;
259 bool isVector() const {
260 return (getFlags() & FlagVector) != 0;
262 bool isStaticMember() const {
263 return (getFlags() & FlagStaticMember) != 0;
265 bool isValid() const {
266 return DbgNode && isType();
269 /// isUnsignedDIType - Return true if type encoding is unsigned.
270 bool isUnsignedDIType();
272 /// replaceAllUsesWith - Replace all uses of debug info referenced by
274 void replaceAllUsesWith(DIDescriptor &D);
275 void replaceAllUsesWith(MDNode *D);
278 /// DIBasicType - A basic type, like 'int' or 'float'.
279 class DIBasicType : public DIType {
281 explicit DIBasicType(const MDNode *N = 0) : DIType(N) {}
283 unsigned getEncoding() const { return getUnsignedField(9); }
285 /// Verify - Verify that a basic type descriptor is well formed.
289 /// DIDerivedType - A simple derived type, like a const qualified type,
290 /// a typedef, a pointer or reference, et cetera. Or, a data member of
291 /// a class/struct/union.
292 class DIDerivedType : public DIType {
293 friend class DIDescriptor;
294 void printInternal(raw_ostream &OS) const;
296 explicit DIDerivedType(const MDNode *N, bool, bool)
297 : DIType(N, true, true) {}
299 explicit DIDerivedType(const MDNode *N = 0)
300 : DIType(N, true, true) {}
302 DIType getTypeDerivedFrom() const { return getFieldAs<DIType>(9); }
304 /// getOriginalTypeSize - If this type is derived from a base type then
305 /// return base type size.
306 uint64_t getOriginalTypeSize() const;
308 /// getObjCProperty - Return property node, if this ivar is
309 /// associated with one.
310 MDNode *getObjCProperty() const;
312 DIType getClassType() const {
313 assert(getTag() == dwarf::DW_TAG_ptr_to_member_type);
314 return getFieldAs<DIType>(10);
317 Constant *getConstant() const {
318 assert((getTag() == dwarf::DW_TAG_member) && isStaticMember());
319 return getConstantField(10);
322 /// Verify - Verify that a derived type descriptor is well formed.
326 /// DICompositeType - This descriptor holds a type that can refer to multiple
327 /// other types, like a function or struct.
328 /// DICompositeType is derived from DIDerivedType because some
329 /// composite types (such as enums) can be derived from basic types
330 // FIXME: Make this derive from DIType directly & just store the
331 // base type in a single DIType field.
332 class DICompositeType : public DIDerivedType {
333 friend class DIDescriptor;
334 void printInternal(raw_ostream &OS) const;
336 explicit DICompositeType(const MDNode *N = 0)
337 : DIDerivedType(N, true, true) {
338 if (N && !isCompositeType())
342 DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
343 void setTypeArray(DIArray Elements, DIArray TParams = DIArray());
344 unsigned getRunTimeLang() const { return getUnsignedField(11); }
345 DICompositeType getContainingType() const {
346 return getFieldAs<DICompositeType>(12);
348 void setContainingType(DICompositeType ContainingType);
349 DIArray getTemplateParams() const { return getFieldAs<DIArray>(13); }
351 /// Verify - Verify that a composite type descriptor is well formed.
355 /// DIFile - This is a wrapper for a file.
356 class DIFile : public DIScope {
357 friend class DIDescriptor;
359 explicit DIFile(const MDNode *N = 0) : DIScope(N) {
360 if (DbgNode && !isFile())
363 MDNode *getFileNode() const;
367 /// DICompileUnit - A wrapper for a compile unit.
368 class DICompileUnit : public DIScope {
369 friend class DIDescriptor;
370 void printInternal(raw_ostream &OS) const;
372 explicit DICompileUnit(const MDNode *N = 0) : DIScope(N) {}
374 unsigned getLanguage() const { return getUnsignedField(2); }
375 StringRef getProducer() const { return getStringField(3); }
377 bool isOptimized() const { return getUnsignedField(4) != 0; }
378 StringRef getFlags() const { return getStringField(5); }
379 unsigned getRunTimeVersion() const { return getUnsignedField(6); }
381 DIArray getEnumTypes() const;
382 DIArray getRetainedTypes() const;
383 DIArray getSubprograms() const;
384 DIArray getGlobalVariables() const;
385 DIArray getImportedEntities() const;
387 StringRef getSplitDebugFilename() const { return getStringField(12); }
389 /// Verify - Verify that a compile unit is well formed.
393 /// DISubprogram - This is a wrapper for a subprogram (e.g. a function).
394 class DISubprogram : public DIScope {
395 friend class DIDescriptor;
396 void printInternal(raw_ostream &OS) const;
398 explicit DISubprogram(const MDNode *N = 0) : DIScope(N) {}
400 DIScope getContext() const { return getFieldAs<DIScope>(2); }
401 StringRef getName() const { return getStringField(3); }
402 StringRef getDisplayName() const { return getStringField(4); }
403 StringRef getLinkageName() const { return getStringField(5); }
404 unsigned getLineNumber() const { return getUnsignedField(6); }
405 DICompositeType getType() const { return getFieldAs<DICompositeType>(7); }
407 /// isLocalToUnit - Return true if this subprogram is local to the current
408 /// compile unit, like 'static' in C.
409 unsigned isLocalToUnit() const { return getUnsignedField(8); }
410 unsigned isDefinition() const { return getUnsignedField(9); }
412 unsigned getVirtuality() const { return getUnsignedField(10); }
413 unsigned getVirtualIndex() const { return getUnsignedField(11); }
415 DICompositeType getContainingType() const {
416 return getFieldAs<DICompositeType>(12);
419 unsigned getFlags() const {
420 return getUnsignedField(13);
423 unsigned isArtificial() const {
424 return (getUnsignedField(13) & FlagArtificial) != 0;
426 /// isPrivate - Return true if this subprogram has "private"
427 /// access specifier.
428 bool isPrivate() const {
429 return (getUnsignedField(13) & FlagPrivate) != 0;
431 /// isProtected - Return true if this subprogram has "protected"
432 /// access specifier.
433 bool isProtected() const {
434 return (getUnsignedField(13) & FlagProtected) != 0;
436 /// isExplicit - Return true if this subprogram is marked as explicit.
437 bool isExplicit() const {
438 return (getUnsignedField(13) & FlagExplicit) != 0;
440 /// isPrototyped - Return true if this subprogram is prototyped.
441 bool isPrototyped() const {
442 return (getUnsignedField(13) & FlagPrototyped) != 0;
445 unsigned isOptimized() const;
447 /// Verify - Verify that a subprogram descriptor is well formed.
450 /// describes - Return true if this subprogram provides debugging
451 /// information for the function F.
452 bool describes(const Function *F);
454 Function *getFunction() const { return getFunctionField(15); }
455 void replaceFunction(Function *F) { replaceFunctionField(15, F); }
456 DIArray getTemplateParams() const { return getFieldAs<DIArray>(16); }
457 DISubprogram getFunctionDeclaration() const {
458 return getFieldAs<DISubprogram>(17);
460 MDNode *getVariablesNodes() const;
461 DIArray getVariables() const;
463 /// getScopeLineNumber - Get the beginning of the scope of the
464 /// function, not necessarily where the name of the program
466 unsigned getScopeLineNumber() const { return getUnsignedField(19); }
469 /// DILexicalBlock - This is a wrapper for a lexical block.
470 class DILexicalBlock : public DIScope {
472 explicit DILexicalBlock(const MDNode *N = 0) : DIScope(N) {}
473 DIScope getContext() const { return getFieldAs<DIScope>(2); }
474 unsigned getLineNumber() const { return getUnsignedField(3); }
475 unsigned getColumnNumber() const { return getUnsignedField(4); }
479 /// DILexicalBlockFile - This is a wrapper for a lexical block with
480 /// a filename change.
481 class DILexicalBlockFile : public DIScope {
483 explicit DILexicalBlockFile(const MDNode *N = 0) : DIScope(N) {}
484 DIScope getContext() const {
485 if (getScope().isSubprogram())
487 return getScope().getContext();
489 unsigned getLineNumber() const { return getScope().getLineNumber(); }
490 unsigned getColumnNumber() const { return getScope().getColumnNumber(); }
491 DILexicalBlock getScope() const { return getFieldAs<DILexicalBlock>(2); }
495 /// DINameSpace - A wrapper for a C++ style name space.
496 class DINameSpace : public DIScope {
497 friend class DIDescriptor;
498 void printInternal(raw_ostream &OS) const;
500 explicit DINameSpace(const MDNode *N = 0) : DIScope(N) {}
501 DIScope getContext() const { return getFieldAs<DIScope>(2); }
502 StringRef getName() const { return getStringField(3); }
503 unsigned getLineNumber() const { return getUnsignedField(4); }
507 /// DITemplateTypeParameter - This is a wrapper for template type parameter.
508 class DITemplateTypeParameter : public DIDescriptor {
510 explicit DITemplateTypeParameter(const MDNode *N = 0) : DIDescriptor(N) {}
512 DIScope getContext() const { return getFieldAs<DIScope>(1); }
513 StringRef getName() const { return getStringField(2); }
514 DIType getType() const { return getFieldAs<DIType>(3); }
515 StringRef getFilename() const {
516 return getFieldAs<DIFile>(4).getFilename();
518 StringRef getDirectory() const {
519 return getFieldAs<DIFile>(4).getDirectory();
521 unsigned getLineNumber() const { return getUnsignedField(5); }
522 unsigned getColumnNumber() const { return getUnsignedField(6); }
526 /// DITemplateValueParameter - This is a wrapper for template value parameter.
527 class DITemplateValueParameter : public DIDescriptor {
529 explicit DITemplateValueParameter(const MDNode *N = 0) : DIDescriptor(N) {}
531 DIScope getContext() const { return getFieldAs<DIScope>(1); }
532 StringRef getName() const { return getStringField(2); }
533 DIType getType() const { return getFieldAs<DIType>(3); }
534 Value *getValue() const;
535 StringRef getFilename() const {
536 return getFieldAs<DIFile>(5).getFilename();
538 StringRef getDirectory() const {
539 return getFieldAs<DIFile>(5).getDirectory();
541 unsigned getLineNumber() const { return getUnsignedField(6); }
542 unsigned getColumnNumber() const { return getUnsignedField(7); }
546 /// DIGlobalVariable - This is a wrapper for a global variable.
547 class DIGlobalVariable : public DIDescriptor {
548 friend class DIDescriptor;
549 void printInternal(raw_ostream &OS) const;
551 explicit DIGlobalVariable(const MDNode *N = 0) : DIDescriptor(N) {}
553 DIScope getContext() const { return getFieldAs<DIScope>(2); }
554 StringRef getName() const { return getStringField(3); }
555 StringRef getDisplayName() const { return getStringField(4); }
556 StringRef getLinkageName() const { return getStringField(5); }
557 StringRef getFilename() const {
558 return getFieldAs<DIFile>(6).getFilename();
560 StringRef getDirectory() const {
561 return getFieldAs<DIFile>(6).getDirectory();
565 unsigned getLineNumber() const { return getUnsignedField(7); }
566 DIType getType() const { return getFieldAs<DIType>(8); }
567 unsigned isLocalToUnit() const { return getUnsignedField(9); }
568 unsigned isDefinition() const { return getUnsignedField(10); }
570 GlobalVariable *getGlobal() const { return getGlobalVariableField(11); }
571 Constant *getConstant() const { return getConstantField(11); }
572 DIDerivedType getStaticDataMemberDeclaration() const {
573 return getFieldAs<DIDerivedType>(12);
576 /// Verify - Verify that a global variable descriptor is well formed.
580 /// DIVariable - This is a wrapper for a variable (e.g. parameter, local,
582 class DIVariable : public DIDescriptor {
583 friend class DIDescriptor;
584 void printInternal(raw_ostream &OS) const;
586 explicit DIVariable(const MDNode *N = 0)
589 DIScope getContext() const { return getFieldAs<DIScope>(1); }
590 StringRef getName() const { return getStringField(2); }
591 DIFile getFile() const { return getFieldAs<DIFile>(3); }
592 unsigned getLineNumber() const {
593 return (getUnsignedField(4) << 8) >> 8;
595 unsigned getArgNumber() const {
596 unsigned L = getUnsignedField(4);
599 DIType getType() const { return getFieldAs<DIType>(5); }
601 /// isArtificial - Return true if this variable is marked as "artificial".
602 bool isArtificial() const {
603 return (getUnsignedField(6) & FlagArtificial) != 0;
606 bool isObjectPointer() const {
607 return (getUnsignedField(6) & FlagObjectPointer) != 0;
610 /// \brief Return true if this variable is represented as a pointer.
611 bool isIndirect() const {
612 return (getUnsignedField(6) & FlagIndirectVariable) != 0;
615 /// getInlinedAt - If this variable is inlined then return inline location.
616 MDNode *getInlinedAt() const;
618 /// Verify - Verify that a variable descriptor is well formed.
621 /// HasComplexAddr - Return true if the variable has a complex address.
622 bool hasComplexAddress() const {
623 return getNumAddrElements() > 0;
626 unsigned getNumAddrElements() const;
628 uint64_t getAddrElement(unsigned Idx) const {
629 return getUInt64Field(Idx+8);
632 /// isBlockByrefVariable - Return true if the variable was declared as
633 /// a "__block" variable (Apple Blocks).
634 bool isBlockByrefVariable() const {
635 return getType().isBlockByrefStruct();
638 /// isInlinedFnArgument - Return true if this variable provides debugging
639 /// information for an inlined function arguments.
640 bool isInlinedFnArgument(const Function *CurFn);
642 void printExtendedName(raw_ostream &OS) const;
645 /// DILocation - This object holds location information. This object
646 /// is not associated with any DWARF tag.
647 class DILocation : public DIDescriptor {
649 explicit DILocation(const MDNode *N) : DIDescriptor(N) { }
651 unsigned getLineNumber() const { return getUnsignedField(0); }
652 unsigned getColumnNumber() const { return getUnsignedField(1); }
653 DIScope getScope() const { return getFieldAs<DIScope>(2); }
654 DILocation getOrigLocation() const { return getFieldAs<DILocation>(3); }
655 StringRef getFilename() const { return getScope().getFilename(); }
656 StringRef getDirectory() const { return getScope().getDirectory(); }
660 class DIObjCProperty : public DIDescriptor {
661 friend class DIDescriptor;
662 void printInternal(raw_ostream &OS) const;
664 explicit DIObjCProperty(const MDNode *N) : DIDescriptor(N) { }
666 StringRef getObjCPropertyName() const { return getStringField(1); }
667 DIFile getFile() const { return getFieldAs<DIFile>(2); }
668 unsigned getLineNumber() const { return getUnsignedField(3); }
670 StringRef getObjCPropertyGetterName() const {
671 return getStringField(4);
673 StringRef getObjCPropertySetterName() const {
674 return getStringField(5);
676 bool isReadOnlyObjCProperty() const {
677 return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_readonly) != 0;
679 bool isReadWriteObjCProperty() const {
680 return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_readwrite) != 0;
682 bool isAssignObjCProperty() const {
683 return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_assign) != 0;
685 bool isRetainObjCProperty() const {
686 return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_retain) != 0;
688 bool isCopyObjCProperty() const {
689 return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_copy) != 0;
691 bool isNonAtomicObjCProperty() const {
692 return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_nonatomic) != 0;
695 DIType getType() const { return getFieldAs<DIType>(7); }
697 /// Verify - Verify that a derived type descriptor is well formed.
701 /// \brief An imported module (C++ using directive or similar).
702 class DIImportedEntity : public DIDescriptor {
703 friend class DIDescriptor;
704 void printInternal(raw_ostream &OS) const;
706 explicit DIImportedEntity(const MDNode *N) : DIDescriptor(N) { }
707 DIScope getContext() const { return getFieldAs<DIScope>(1); }
708 DIDescriptor getEntity() const { return getFieldAs<DIDescriptor>(2); }
709 unsigned getLineNumber() const { return getUnsignedField(3); }
710 StringRef getName() const { return getStringField(4); }
714 /// getDISubprogram - Find subprogram that is enclosing this scope.
715 DISubprogram getDISubprogram(const MDNode *Scope);
717 /// getDICompositeType - Find underlying composite type.
718 DICompositeType getDICompositeType(DIType T);
720 /// isSubprogramContext - Return true if Context is either a subprogram
721 /// or another context nested inside a subprogram.
722 bool isSubprogramContext(const MDNode *Context);
724 /// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
725 /// to hold function specific information.
726 NamedMDNode *getOrInsertFnSpecificMDNode(Module &M, DISubprogram SP);
728 /// getFnSpecificMDNode - Return a NameMDNode, if available, that is
729 /// suitable to hold function specific information.
730 NamedMDNode *getFnSpecificMDNode(const Module &M, DISubprogram SP);
732 /// createInlinedVariable - Create a new inlined variable based on current
734 /// @param DV Current Variable.
735 /// @param InlinedScope Location at current variable is inlined.
736 DIVariable createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
737 LLVMContext &VMContext);
739 /// cleanseInlinedVariable - Remove inlined scope from the variable.
740 DIVariable cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext);
742 /// DebugInfoFinder tries to list all debug info MDNodes in a module. To
743 /// list debug info MDNodes used by an instruction, DebugInfoFinder uses
744 /// processDeclare and processValue. processModule will go through
745 /// all DICompileUnits and list debug info MDNodes used by the CUs.
746 class DebugInfoFinder {
748 /// processModule - Process entire module and collect debug info
750 void processModule(const Module &M);
752 /// processDeclare - Process DbgDeclareInst.
753 void processDeclare(const DbgDeclareInst *DDI);
754 /// Process DbgValueInst.
755 void processValue(const DbgValueInst *DVI);
760 /// processType - Process DIType.
761 void processType(DIType DT);
763 /// processLexicalBlock - Process DILexicalBlock.
764 void processLexicalBlock(DILexicalBlock LB);
766 /// processSubprogram - Process DISubprogram.
767 void processSubprogram(DISubprogram SP);
769 /// processLocation - Process DILocation.
770 void processLocation(DILocation Loc);
772 void processScope(DIScope Scope);
774 /// addCompileUnit - Add compile unit into CUs.
775 bool addCompileUnit(DICompileUnit CU);
777 /// addGlobalVariable - Add global variable into GVs.
778 bool addGlobalVariable(DIGlobalVariable DIG);
780 // addSubprogram - Add subprogram into SPs.
781 bool addSubprogram(DISubprogram SP);
783 /// addType - Add type into Tys.
784 bool addType(DIType DT);
786 bool addScope(DIScope Scope);
789 typedef SmallVectorImpl<MDNode *>::const_iterator iterator;
790 iterator compile_unit_begin() const { return CUs.begin(); }
791 iterator compile_unit_end() const { return CUs.end(); }
792 iterator subprogram_begin() const { return SPs.begin(); }
793 iterator subprogram_end() const { return SPs.end(); }
794 iterator global_variable_begin() const { return GVs.begin(); }
795 iterator global_variable_end() const { return GVs.end(); }
796 iterator type_begin() const { return TYs.begin(); }
797 iterator type_end() const { return TYs.end(); }
798 iterator scope_begin() const { return Scopes.begin(); }
799 iterator scope_end() const { return Scopes.end(); }
801 unsigned compile_unit_count() const { return CUs.size(); }
802 unsigned global_variable_count() const { return GVs.size(); }
803 unsigned subprogram_count() const { return SPs.size(); }
804 unsigned type_count() const { return TYs.size(); }
805 unsigned scope_count() const { return Scopes.size(); }
808 SmallVector<MDNode *, 8> CUs; // Compile Units
809 SmallVector<MDNode *, 8> SPs; // Subprograms
810 SmallVector<MDNode *, 8> GVs; // Global Variables;
811 SmallVector<MDNode *, 8> TYs; // Types
812 SmallVector<MDNode *, 8> Scopes; // Scopes
813 SmallPtrSet<MDNode *, 64> NodesSeen;
815 } // end namespace llvm