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llvm-mirror/include/llvm/DebugInfo.h
Manman Ren 20ae2817fa Debug Info: add an identifier field to DICompositeType. 
DICompositeType will have an identifier field at position 14. For now, the
field is set to null in DIBuilder.
For DICompositeTypes where the template argument field (the 13th field)
was optional, modify DIBuilder to make sure the template argument field is set.
Now DICompositeType has 15 fields.

Update DIBuilder to use NULL instead of "i32 0" for null value of a MDNode.
Update verifier to check that DICompositeType has 15 fields and the last
field is null or a MDString.

Update testing cases to include an extra field for DICompositeType.
The identifier field will be used by type uniquing so a front end can
genearte a DICompositeType with a unique identifer.

llvm-svn: 189282
2013-08-26 22:39:55 +00:00

800 lines
29 KiB
C++
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//===--- llvm/Analysis/DebugInfo.h - Debug Information Helpers --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a bunch of datatypes that are useful for creating and
// walking debug info in LLVM IR form. They essentially provide wrappers around
// the information in the global variables that's needed when constructing the
// DWARF information.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_H
#define LLVM_DEBUGINFO_H
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Dwarf.h"
namespace llvm {
class BasicBlock;
class Constant;
class Function;
class GlobalVariable;
class Module;
class Type;
class Value;
class DbgDeclareInst;
class DbgValueInst;
class Instruction;
class MDNode;
class MDString;
class NamedMDNode;
class LLVMContext;
class raw_ostream;
class DIFile;
class DISubprogram;
class DILexicalBlock;
class DILexicalBlockFile;
class DIVariable;
class DIType;
class DIObjCProperty;
/// DIDescriptor - A thin wraper around MDNode to access encoded debug info.
/// This should not be stored in a container, because the underlying MDNode
/// may change in certain situations.
class DIDescriptor {
public:
enum {
FlagPrivate = 1 << 0,
FlagProtected = 1 << 1,
FlagFwdDecl = 1 << 2,
FlagAppleBlock = 1 << 3,
FlagBlockByrefStruct = 1 << 4,
FlagVirtual = 1 << 5,
FlagArtificial = 1 << 6,
FlagExplicit = 1 << 7,
FlagPrototyped = 1 << 8,
FlagObjcClassComplete = 1 << 9,
FlagObjectPointer = 1 << 10,
FlagVector = 1 << 11,
FlagStaticMember = 1 << 12,
FlagIndirectVariable = 1 << 13
};
protected:
const MDNode *DbgNode;
StringRef getStringField(unsigned Elt) const;
unsigned getUnsignedField(unsigned Elt) const {
return (unsigned)getUInt64Field(Elt);
}
uint64_t getUInt64Field(unsigned Elt) const;
int64_t getInt64Field(unsigned Elt) const;
DIDescriptor getDescriptorField(unsigned Elt) const;
template <typename DescTy>
DescTy getFieldAs(unsigned Elt) const {
return DescTy(getDescriptorField(Elt));
}
GlobalVariable *getGlobalVariableField(unsigned Elt) const;
Constant *getConstantField(unsigned Elt) const;
Function *getFunctionField(unsigned Elt) const;
void replaceFunctionField(unsigned Elt, Function *F);
public:
explicit DIDescriptor(const MDNode *N = 0) : DbgNode(N) {}
bool Verify() const;
operator MDNode *() const { return const_cast<MDNode*>(DbgNode); }
MDNode *operator ->() const { return const_cast<MDNode*>(DbgNode); }
// An explicit operator bool so that we can do testing of DI values
// easily.
// FIXME: This operator bool isn't actually protecting anything at the
// moment due to the conversion operator above making DIDescriptor nodes
// implicitly convertable to bool.
LLVM_EXPLICIT operator bool() const { return DbgNode != 0; }
bool operator==(DIDescriptor Other) const {
return DbgNode == Other.DbgNode;
}
bool operator!=(DIDescriptor Other) const {
return !operator==(Other);
}
uint16_t getTag() const {
return getUnsignedField(0) & ~LLVMDebugVersionMask;
}
bool isDerivedType() const;
bool isCompositeType() const;
bool isBasicType() const;
bool isVariable() const;
bool isSubprogram() const;
bool isGlobalVariable() const;
bool isScope() const;
bool isFile() const;
bool isCompileUnit() const;
bool isNameSpace() const;
bool isLexicalBlockFile() const;
bool isLexicalBlock() const;
bool isSubrange() const;
bool isEnumerator() const;
bool isType() const;
bool isUnspecifiedParameter() const;
bool isTemplateTypeParameter() const;
bool isTemplateValueParameter() const;
bool isObjCProperty() const;
bool isImportedEntity() const;
/// print - print descriptor.
void print(raw_ostream &OS) const;
/// dump - print descriptor to dbgs() with a newline.
void dump() const;
};
/// DISubrange - This is used to represent ranges, for array bounds.
class DISubrange : public DIDescriptor {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DISubrange(const MDNode *N = 0) : DIDescriptor(N) {}
int64_t getLo() const { return getInt64Field(1); }
int64_t getCount() const { return getInt64Field(2); }
bool Verify() const;
};
/// DIArray - This descriptor holds an array of descriptors.
class DIArray : public DIDescriptor {
public:
explicit DIArray(const MDNode *N = 0) : DIDescriptor(N) {}
unsigned getNumElements() const;
DIDescriptor getElement(unsigned Idx) const {
return getDescriptorField(Idx);
}
};
/// DIEnumerator - A wrapper for an enumerator (e.g. X and Y in 'enum {X,Y}').
/// FIXME: it seems strange that this doesn't have either a reference to the
/// type/precision or a file/line pair for location info.
class DIEnumerator : public DIDescriptor {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIEnumerator(const MDNode *N = 0) : DIDescriptor(N) {}
StringRef getName() const { return getStringField(1); }
int64_t getEnumValue() const { return getInt64Field(2); }
bool Verify() const;
};
/// DIScope - A base class for various scopes.
class DIScope : public DIDescriptor {
protected:
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIScope(const MDNode *N = 0) : DIDescriptor (N) {}
/// Gets the parent scope for this scope node or returns a
/// default constructed scope.
DIScope getContext() const;
StringRef getFilename() const;
StringRef getDirectory() const;
};
/// DIType - This is a wrapper for a type.
/// FIXME: Types should be factored much better so that CV qualifiers and
/// others do not require a huge and empty descriptor full of zeros.
class DIType : public DIScope {
protected:
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
DIType(const MDNode *N = 0) : DIScope(N) {}
/// Verify - Verify that a type descriptor is well formed.
bool Verify() const;
DIScope getContext() const { return getFieldAs<DIScope>(2); }
StringRef getName() const { return getStringField(3); }
unsigned getLineNumber() const { return getUnsignedField(4); }
uint64_t getSizeInBits() const { return getUInt64Field(5); }
uint64_t getAlignInBits() const { return getUInt64Field(6); }
// FIXME: Offset is only used for DW_TAG_member nodes. Making every type
// carry this is just plain insane.
uint64_t getOffsetInBits() const { return getUInt64Field(7); }
unsigned getFlags() const { return getUnsignedField(8); }
bool isPrivate() const {
return (getFlags() & FlagPrivate) != 0;
}
bool isProtected() const {
return (getFlags() & FlagProtected) != 0;
}
bool isForwardDecl() const {
return (getFlags() & FlagFwdDecl) != 0;
}
// isAppleBlock - Return true if this is the Apple Blocks extension.
bool isAppleBlockExtension() const {
return (getFlags() & FlagAppleBlock) != 0;
}
bool isBlockByrefStruct() const {
return (getFlags() & FlagBlockByrefStruct) != 0;
}
bool isVirtual() const {
return (getFlags() & FlagVirtual) != 0;
}
bool isArtificial() const {
return (getFlags() & FlagArtificial) != 0;
}
bool isObjectPointer() const {
return (getFlags() & FlagObjectPointer) != 0;
}
bool isObjcClassComplete() const {
return (getFlags() & FlagObjcClassComplete) != 0;
}
bool isVector() const {
return (getFlags() & FlagVector) != 0;
}
bool isStaticMember() const {
return (getFlags() & FlagStaticMember) != 0;
}
bool isValid() const {
return DbgNode && isType();
}
/// isUnsignedDIType - Return true if type encoding is unsigned.
bool isUnsignedDIType();
/// replaceAllUsesWith - Replace all uses of debug info referenced by
/// this descriptor.
void replaceAllUsesWith(DIDescriptor &D);
void replaceAllUsesWith(MDNode *D);
};
/// DIBasicType - A basic type, like 'int' or 'float'.
class DIBasicType : public DIType {
public:
explicit DIBasicType(const MDNode *N = 0) : DIType(N) {}
unsigned getEncoding() const { return getUnsignedField(9); }
/// Verify - Verify that a basic type descriptor is well formed.
bool Verify() const;
};
/// DIDerivedType - A simple derived type, like a const qualified type,
/// a typedef, a pointer or reference, et cetera. Or, a data member of
/// a class/struct/union.
class DIDerivedType : public DIType {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIDerivedType(const MDNode *N = 0) : DIType(N) {}
DIType getTypeDerivedFrom() const { return getFieldAs<DIType>(9); }
/// getOriginalTypeSize - If this type is derived from a base type then
/// return base type size.
uint64_t getOriginalTypeSize() const;
/// getObjCProperty - Return property node, if this ivar is
/// associated with one.
MDNode *getObjCProperty() const;
DIType getClassType() const {
assert(getTag() == dwarf::DW_TAG_ptr_to_member_type);
return getFieldAs<DIType>(10);
}
Constant *getConstant() const {
assert((getTag() == dwarf::DW_TAG_member) && isStaticMember());
return getConstantField(10);
}
/// Verify - Verify that a derived type descriptor is well formed.
bool Verify() const;
};
/// DICompositeType - This descriptor holds a type that can refer to multiple
/// other types, like a function or struct.
/// DICompositeType is derived from DIDerivedType because some
/// composite types (such as enums) can be derived from basic types
// FIXME: Make this derive from DIType directly & just store the
// base type in a single DIType field.
class DICompositeType : public DIDerivedType {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DICompositeType(const MDNode *N = 0) : DIDerivedType(N) {}
DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
void setTypeArray(DIArray Elements, DIArray TParams = DIArray());
void addMember(DIDescriptor D);
unsigned getRunTimeLang() const { return getUnsignedField(11); }
DICompositeType getContainingType() const {
return getFieldAs<DICompositeType>(12);
}
void setContainingType(DICompositeType ContainingType);
DIArray getTemplateParams() const { return getFieldAs<DIArray>(13); }
MDString *getIdentifier() const;
/// Verify - Verify that a composite type descriptor is well formed.
bool Verify() const;
};
/// DIFile - This is a wrapper for a file.
class DIFile : public DIScope {
friend class DIDescriptor;
public:
explicit DIFile(const MDNode *N = 0) : DIScope(N) {}
MDNode *getFileNode() const;
bool Verify() const;
};
/// DICompileUnit - A wrapper for a compile unit.
class DICompileUnit : public DIScope {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DICompileUnit(const MDNode *N = 0) : DIScope(N) {}
unsigned getLanguage() const { return getUnsignedField(2); }
StringRef getProducer() const { return getStringField(3); }
bool isOptimized() const { return getUnsignedField(4) != 0; }
StringRef getFlags() const { return getStringField(5); }
unsigned getRunTimeVersion() const { return getUnsignedField(6); }
DIArray getEnumTypes() const;
DIArray getRetainedTypes() const;
DIArray getSubprograms() const;
DIArray getGlobalVariables() const;
DIArray getImportedEntities() const;
StringRef getSplitDebugFilename() const { return getStringField(12); }
/// Verify - Verify that a compile unit is well formed.
bool Verify() const;
};
/// DISubprogram - This is a wrapper for a subprogram (e.g. a function).
class DISubprogram : public DIScope {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DISubprogram(const MDNode *N = 0) : DIScope(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(2); }
StringRef getName() const { return getStringField(3); }
StringRef getDisplayName() const { return getStringField(4); }
StringRef getLinkageName() const { return getStringField(5); }
unsigned getLineNumber() const { return getUnsignedField(6); }
DICompositeType getType() const { return getFieldAs<DICompositeType>(7); }
/// isLocalToUnit - Return true if this subprogram is local to the current
/// compile unit, like 'static' in C.
unsigned isLocalToUnit() const { return getUnsignedField(8); }
unsigned isDefinition() const { return getUnsignedField(9); }
unsigned getVirtuality() const { return getUnsignedField(10); }
unsigned getVirtualIndex() const { return getUnsignedField(11); }
DICompositeType getContainingType() const {
return getFieldAs<DICompositeType>(12);
}
unsigned getFlags() const {
return getUnsignedField(13);
}
unsigned isArtificial() const {
return (getUnsignedField(13) & FlagArtificial) != 0;
}
/// isPrivate - Return true if this subprogram has "private"
/// access specifier.
bool isPrivate() const {
return (getUnsignedField(13) & FlagPrivate) != 0;
}
/// isProtected - Return true if this subprogram has "protected"
/// access specifier.
bool isProtected() const {
return (getUnsignedField(13) & FlagProtected) != 0;
}
/// isExplicit - Return true if this subprogram is marked as explicit.
bool isExplicit() const {
return (getUnsignedField(13) & FlagExplicit) != 0;
}
/// isPrototyped - Return true if this subprogram is prototyped.
bool isPrototyped() const {
return (getUnsignedField(13) & FlagPrototyped) != 0;
}
unsigned isOptimized() const;
/// Verify - Verify that a subprogram descriptor is well formed.
bool Verify() const;
/// describes - Return true if this subprogram provides debugging
/// information for the function F.
bool describes(const Function *F);
Function *getFunction() const { return getFunctionField(15); }
void replaceFunction(Function *F) { replaceFunctionField(15, F); }
DIArray getTemplateParams() const { return getFieldAs<DIArray>(16); }
DISubprogram getFunctionDeclaration() const {
return getFieldAs<DISubprogram>(17);
}
MDNode *getVariablesNodes() const;
DIArray getVariables() const;
/// getScopeLineNumber - Get the beginning of the scope of the
/// function, not necessarily where the name of the program
/// starts.
unsigned getScopeLineNumber() const { return getUnsignedField(19); }
};
/// DILexicalBlock - This is a wrapper for a lexical block.
class DILexicalBlock : public DIScope {
public:
explicit DILexicalBlock(const MDNode *N = 0) : DIScope(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(2); }
unsigned getLineNumber() const { return getUnsignedField(3); }
unsigned getColumnNumber() const { return getUnsignedField(4); }
bool Verify() const;
};
/// DILexicalBlockFile - This is a wrapper for a lexical block with
/// a filename change.
class DILexicalBlockFile : public DIScope {
public:
explicit DILexicalBlockFile(const MDNode *N = 0) : DIScope(N) {}
DIScope getContext() const {
if (getScope().isSubprogram())
return getScope();
return getScope().getContext();
}
unsigned getLineNumber() const { return getScope().getLineNumber(); }
unsigned getColumnNumber() const { return getScope().getColumnNumber(); }
DILexicalBlock getScope() const { return getFieldAs<DILexicalBlock>(2); }
bool Verify() const;
};
/// DINameSpace - A wrapper for a C++ style name space.
class DINameSpace : public DIScope {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DINameSpace(const MDNode *N = 0) : DIScope(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(2); }
StringRef getName() const { return getStringField(3); }
unsigned getLineNumber() const { return getUnsignedField(4); }
bool Verify() const;
};
/// DITemplateTypeParameter - This is a wrapper for template type parameter.
class DITemplateTypeParameter : public DIDescriptor {
public:
explicit DITemplateTypeParameter(const MDNode *N = 0) : DIDescriptor(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
DIType getType() const { return getFieldAs<DIType>(3); }
StringRef getFilename() const {
return getFieldAs<DIFile>(4).getFilename();
}
StringRef getDirectory() const {
return getFieldAs<DIFile>(4).getDirectory();
}
unsigned getLineNumber() const { return getUnsignedField(5); }
unsigned getColumnNumber() const { return getUnsignedField(6); }
bool Verify() const;
};
/// DITemplateValueParameter - This is a wrapper for template value parameter.
class DITemplateValueParameter : public DIDescriptor {
public:
explicit DITemplateValueParameter(const MDNode *N = 0) : DIDescriptor(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
DIType getType() const { return getFieldAs<DIType>(3); }
Value *getValue() const;
StringRef getFilename() const {
return getFieldAs<DIFile>(5).getFilename();
}
StringRef getDirectory() const {
return getFieldAs<DIFile>(5).getDirectory();
}
unsigned getLineNumber() const { return getUnsignedField(6); }
unsigned getColumnNumber() const { return getUnsignedField(7); }
bool Verify() const;
};
/// DIGlobalVariable - This is a wrapper for a global variable.
class DIGlobalVariable : public DIDescriptor {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIGlobalVariable(const MDNode *N = 0) : DIDescriptor(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(2); }
StringRef getName() const { return getStringField(3); }
StringRef getDisplayName() const { return getStringField(4); }
StringRef getLinkageName() const { return getStringField(5); }
StringRef getFilename() const {
return getFieldAs<DIFile>(6).getFilename();
}
StringRef getDirectory() const {
return getFieldAs<DIFile>(6).getDirectory();
}
unsigned getLineNumber() const { return getUnsignedField(7); }
DIType getType() const { return getFieldAs<DIType>(8); }
unsigned isLocalToUnit() const { return getUnsignedField(9); }
unsigned isDefinition() const { return getUnsignedField(10); }
GlobalVariable *getGlobal() const { return getGlobalVariableField(11); }
Constant *getConstant() const { return getConstantField(11); }
DIDerivedType getStaticDataMemberDeclaration() const {
return getFieldAs<DIDerivedType>(12);
}
/// Verify - Verify that a global variable descriptor is well formed.
bool Verify() const;
};
/// DIVariable - This is a wrapper for a variable (e.g. parameter, local,
/// global etc).
class DIVariable : public DIDescriptor {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIVariable(const MDNode *N = 0) : DIDescriptor(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
DIFile getFile() const { return getFieldAs<DIFile>(3); }
unsigned getLineNumber() const {
return (getUnsignedField(4) << 8) >> 8;
}
unsigned getArgNumber() const {
unsigned L = getUnsignedField(4);
return L >> 24;
}
DIType getType() const { return getFieldAs<DIType>(5); }
/// isArtificial - Return true if this variable is marked as "artificial".
bool isArtificial() const {
return (getUnsignedField(6) & FlagArtificial) != 0;
}
bool isObjectPointer() const {
return (getUnsignedField(6) & FlagObjectPointer) != 0;
}
/// \brief Return true if this variable is represented as a pointer.
bool isIndirect() const {
return (getUnsignedField(6) & FlagIndirectVariable) != 0;
}
/// getInlinedAt - If this variable is inlined then return inline location.
MDNode *getInlinedAt() const;
/// Verify - Verify that a variable descriptor is well formed.
bool Verify() const;
/// HasComplexAddr - Return true if the variable has a complex address.
bool hasComplexAddress() const {
return getNumAddrElements() > 0;
}
unsigned getNumAddrElements() const;
uint64_t getAddrElement(unsigned Idx) const {
return getUInt64Field(Idx+8);
}
/// isBlockByrefVariable - Return true if the variable was declared as
/// a "__block" variable (Apple Blocks).
bool isBlockByrefVariable() const {
return getType().isBlockByrefStruct();
}
/// isInlinedFnArgument - Return true if this variable provides debugging
/// information for an inlined function arguments.
bool isInlinedFnArgument(const Function *CurFn);
void printExtendedName(raw_ostream &OS) const;
};
/// DILocation - This object holds location information. This object
/// is not associated with any DWARF tag.
class DILocation : public DIDescriptor {
public:
explicit DILocation(const MDNode *N) : DIDescriptor(N) { }
unsigned getLineNumber() const { return getUnsignedField(0); }
unsigned getColumnNumber() const { return getUnsignedField(1); }
DIScope getScope() const { return getFieldAs<DIScope>(2); }
DILocation getOrigLocation() const { return getFieldAs<DILocation>(3); }
StringRef getFilename() const { return getScope().getFilename(); }
StringRef getDirectory() const { return getScope().getDirectory(); }
bool Verify() const;
};
class DIObjCProperty : public DIDescriptor {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIObjCProperty(const MDNode *N) : DIDescriptor(N) { }
StringRef getObjCPropertyName() const { return getStringField(1); }
DIFile getFile() const { return getFieldAs<DIFile>(2); }
unsigned getLineNumber() const { return getUnsignedField(3); }
StringRef getObjCPropertyGetterName() const {
return getStringField(4);
}
StringRef getObjCPropertySetterName() const {
return getStringField(5);
}
bool isReadOnlyObjCProperty() const {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_readonly) != 0;
}
bool isReadWriteObjCProperty() const {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_readwrite) != 0;
}
bool isAssignObjCProperty() const {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_assign) != 0;
}
bool isRetainObjCProperty() const {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_retain) != 0;
}
bool isCopyObjCProperty() const {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_copy) != 0;
}
bool isNonAtomicObjCProperty() const {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_nonatomic) != 0;
}
DIType getType() const { return getFieldAs<DIType>(7); }
/// Verify - Verify that a derived type descriptor is well formed.
bool Verify() const;
};
/// \brief An imported module (C++ using directive or similar).
class DIImportedEntity : public DIDescriptor {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIImportedEntity(const MDNode *N) : DIDescriptor(N) { }
DIScope getContext() const { return getFieldAs<DIScope>(1); }
DIDescriptor getEntity() const { return getFieldAs<DIDescriptor>(2); }
unsigned getLineNumber() const { return getUnsignedField(3); }
StringRef getName() const { return getStringField(4); }
bool Verify() const;
};
/// getDISubprogram - Find subprogram that is enclosing this scope.
DISubprogram getDISubprogram(const MDNode *Scope);
/// getDICompositeType - Find underlying composite type.
DICompositeType getDICompositeType(DIType T);
/// isSubprogramContext - Return true if Context is either a subprogram
/// or another context nested inside a subprogram.
bool isSubprogramContext(const MDNode *Context);
/// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
/// to hold function specific information.
NamedMDNode *getOrInsertFnSpecificMDNode(Module &M, DISubprogram SP);
/// getFnSpecificMDNode - Return a NameMDNode, if available, that is
/// suitable to hold function specific information.
NamedMDNode *getFnSpecificMDNode(const Module &M, DISubprogram SP);
/// createInlinedVariable - Create a new inlined variable based on current
/// variable.
/// @param DV Current Variable.
/// @param InlinedScope Location at current variable is inlined.
DIVariable createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
LLVMContext &VMContext);
/// cleanseInlinedVariable - Remove inlined scope from the variable.
DIVariable cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext);
/// DebugInfoFinder tries to list all debug info MDNodes used in a module. To
/// list debug info MDNodes used by an instruction, DebugInfoFinder uses
/// processDeclare, processValue and processLocation to handle DbgDeclareInst,
/// DbgValueInst and DbgLoc attached to instructions. processModule will go
/// through all DICompileUnits in llvm.dbg.cu and list debug info MDNodes
/// used by the CUs.
class DebugInfoFinder {
public:
/// processModule - Process entire module and collect debug info
/// anchors.
void processModule(const Module &M);
/// processDeclare - Process DbgDeclareInst.
void processDeclare(const DbgDeclareInst *DDI);
/// Process DbgValueInst.
void processValue(const DbgValueInst *DVI);
/// processLocation - Process DILocation.
void processLocation(DILocation Loc);
/// Clear all lists.
void reset();
private:
/// processType - Process DIType.
void processType(DIType DT);
/// processLexicalBlock - Process DILexicalBlock.
void processLexicalBlock(DILexicalBlock LB);
/// processSubprogram - Process DISubprogram.
void processSubprogram(DISubprogram SP);
void processScope(DIScope Scope);
/// addCompileUnit - Add compile unit into CUs.
bool addCompileUnit(DICompileUnit CU);
/// addGlobalVariable - Add global variable into GVs.
bool addGlobalVariable(DIGlobalVariable DIG);
// addSubprogram - Add subprogram into SPs.
bool addSubprogram(DISubprogram SP);
/// addType - Add type into Tys.
bool addType(DIType DT);
bool addScope(DIScope Scope);
public:
typedef SmallVectorImpl<MDNode *>::const_iterator iterator;
iterator compile_unit_begin() const { return CUs.begin(); }
iterator compile_unit_end() const { return CUs.end(); }
iterator subprogram_begin() const { return SPs.begin(); }
iterator subprogram_end() const { return SPs.end(); }
iterator global_variable_begin() const { return GVs.begin(); }
iterator global_variable_end() const { return GVs.end(); }
iterator type_begin() const { return TYs.begin(); }
iterator type_end() const { return TYs.end(); }
iterator scope_begin() const { return Scopes.begin(); }
iterator scope_end() const { return Scopes.end(); }
unsigned compile_unit_count() const { return CUs.size(); }
unsigned global_variable_count() const { return GVs.size(); }
unsigned subprogram_count() const { return SPs.size(); }
unsigned type_count() const { return TYs.size(); }
unsigned scope_count() const { return Scopes.size(); }
private:
SmallVector<MDNode *, 8> CUs; // Compile Units
SmallVector<MDNode *, 8> SPs; // Subprograms
SmallVector<MDNode *, 8> GVs; // Global Variables;
SmallVector<MDNode *, 8> TYs; // Types
SmallVector<MDNode *, 8> Scopes; // Scopes
SmallPtrSet<MDNode *, 64> NodesSeen;
};
} // end namespace llvm
#endif
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