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llvm-mirror/include/llvm/Analysis/DebugInfo.h
Stuart Hastings 37ed2a9663 Revert 105492 & 105493 due to a testcase regression. Radar 7424645. 
llvm-svn: 105511
2010-06-05 00:39:29 +00:00

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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_ANALYSIS_DEBUGINFO_H
#define LLVM_ANALYSIS_DEBUGINFO_H
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/SmallPtrSet.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 Instruction;
class MDNode;
class LLVMContext;
class raw_ostream;
/// DIDescriptor - A thin wraper around MDNode to access encoded debug info.
/// This should not be stored in a container, because underly MDNode may
/// change in certain situations.
class DIDescriptor {
protected:
const MDNode *DbgNode;
StringRef getStringField(unsigned Elt) const;
unsigned getUnsignedField(unsigned Elt) const {
return (unsigned)getUInt64Field(Elt);
}
uint64_t getUInt64Field(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;
public:
explicit DIDescriptor() : DbgNode(0) {}
explicit DIDescriptor(const MDNode *N) : DbgNode(N) {}
bool Verify() const { return DbgNode != 0; }
operator MDNode *() const { return const_cast<MDNode*>(DbgNode); }
MDNode *operator ->() const { return const_cast<MDNode*>(DbgNode); }
unsigned getVersion() const {
return getUnsignedField(0) & LLVMDebugVersionMask;
}
unsigned getTag() const {
return getUnsignedField(0) & ~LLVMDebugVersionMask;
}
/// print - print descriptor.
void print(raw_ostream &OS) const;
/// dump - print descriptor to dbgs() with a newline.
void dump() const;
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 isLexicalBlock() const;
bool isSubrange() const;
bool isEnumerator() const;
bool isType() const;
bool isGlobal() const;
};
/// DISubrange - This is used to represent ranges, for array bounds.
class DISubrange : public DIDescriptor {
public:
explicit DISubrange(const MDNode *N = 0) : DIDescriptor(N) {}
int64_t getLo() const { return (int64_t)getUInt64Field(1); }
int64_t getHi() const { return (int64_t)getUInt64Field(2); }
};
/// 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);
}
};
/// DIScope - A base class for various scopes.
class DIScope : public DIDescriptor {
public:
explicit DIScope(const MDNode *N = 0) : DIDescriptor (N) {}
virtual ~DIScope() {}
StringRef getFilename() const;
StringRef getDirectory() const;
};
/// DICompileUnit - A wrapper for a compile unit.
class DICompileUnit : public DIScope {
public:
explicit DICompileUnit(const MDNode *N = 0) : DIScope(N) {}
unsigned getLanguage() const { return getUnsignedField(2); }
StringRef getFilename() const { return getStringField(3); }
StringRef getDirectory() const { return getStringField(4); }
StringRef getProducer() const { return getStringField(5); }
/// isMain - Each input file is encoded as a separate compile unit in LLVM
/// debugging information output. However, many target specific tool chains
/// prefer to encode only one compile unit in an object file. In this
/// situation, the LLVM code generator will include debugging information
/// entities in the compile unit that is marked as main compile unit. The
/// code generator accepts maximum one main compile unit per module. If a
/// module does not contain any main compile unit then the code generator
/// will emit multiple compile units in the output object file.
bool isMain() const { return getUnsignedField(6); }
bool isOptimized() const { return getUnsignedField(7); }
StringRef getFlags() const { return getStringField(8); }
unsigned getRunTimeVersion() const { return getUnsignedField(9); }
/// Verify - Verify that a compile unit is well formed.
bool Verify() const;
/// print - print compile unit.
void print(raw_ostream &OS) const;
/// dump - print compile unit to dbgs() with a newline.
void dump() const;
};
/// DIFile - This is a wrapper for a file.
class DIFile : public DIScope {
public:
explicit DIFile(const MDNode *N = 0) : DIScope(N) {
if (DbgNode && !isFile())
DbgNode = 0;
}
StringRef getFilename() const { return getStringField(1); }
StringRef getDirectory() const { return getStringField(2); }
DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
};
/// 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 {
public:
explicit DIEnumerator(const MDNode *N = 0) : DIDescriptor(N) {}
StringRef getName() const { return getStringField(1); }
uint64_t getEnumValue() const { return getUInt64Field(2); }
};
/// 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 {
public:
enum {
FlagPrivate = 1 << 0,
FlagProtected = 1 << 1,
FlagFwdDecl = 1 << 2,
FlagAppleBlock = 1 << 3,
FlagBlockByrefStruct = 1 << 4,
FlagVirtual = 1 << 5,
FlagArtificial = 1 << 6 // To identify artificial arguments in
// a subroutine type. e.g. "this" in c++.
};
protected:
// This ctor is used when the Tag has already been validated by a derived
// ctor.
DIType(const MDNode *N, bool, bool) : DIScope(N) {}
public:
/// Verify - Verify that a type descriptor is well formed.
bool Verify() const;
public:
explicit DIType(const MDNode *N);
explicit DIType() {}
virtual ~DIType() {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
DICompileUnit getCompileUnit() const{
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(3);
DIFile F = getFieldAs<DIFile>(3);
return F.getCompileUnit();
}
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 isValid() const {
return DbgNode && (isBasicType() || isDerivedType() || isCompositeType());
}
StringRef getFilename() const { return getCompileUnit().getFilename();}
StringRef getDirectory() const { return getCompileUnit().getDirectory();}
/// print - print type.
void print(raw_ostream &OS) const;
/// dump - print type to dbgs() with a newline.
void dump() const;
};
/// 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); }
/// print - print basic type.
void print(raw_ostream &OS) const;
/// dump - print basic type to dbgs() with a newline.
void dump() const;
};
/// DIDerivedType - A simple derived type, like a const qualified type,
/// a typedef, a pointer or reference, etc.
class DIDerivedType : public DIType {
protected:
explicit DIDerivedType(const MDNode *N, bool, bool)
: DIType(N, true, true) {}
public:
explicit DIDerivedType(const MDNode *N = 0)
: DIType(N, true, true) {}
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;
/// print - print derived type.
void print(raw_ostream &OS) const;
/// dump - print derived type to dbgs() with a newline.
void dump() const;
/// replaceAllUsesWith - Replace all uses of debug info referenced by
/// this descriptor. After this completes, the current debug info value
/// is erased.
void replaceAllUsesWith(DIDescriptor &D);
};
/// DICompositeType - This descriptor holds a type that can refer to multiple
/// other types, like a function or struct.
/// FIXME: Why is this a DIDerivedType??
class DICompositeType : public DIDerivedType {
public:
explicit DICompositeType(const MDNode *N = 0)
: DIDerivedType(N, true, true) {
if (N && !isCompositeType())
DbgNode = 0;
}
DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
unsigned getRunTimeLang() const { return getUnsignedField(11); }
DICompositeType getContainingType() const {
return getFieldAs<DICompositeType>(12);
}
/// Verify - Verify that a composite type descriptor is well formed.
bool Verify() const;
/// print - print composite type.
void print(raw_ostream &OS) const;
/// dump - print composite type to dbgs() with a newline.
void dump() const;
};
/// DISubprogram - This is a wrapper for a subprogram (e.g. a function).
class DISubprogram : public DIScope {
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); }
DICompileUnit getCompileUnit() const{
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(6);
DIFile F = getFieldAs<DIFile>(6);
return F.getCompileUnit();
}
unsigned getLineNumber() const { return getUnsignedField(7); }
DICompositeType getType() const { return getFieldAs<DICompositeType>(8); }
/// getReturnTypeName - Subprogram return types are encoded either as
/// DIType or as DICompositeType.
StringRef getReturnTypeName() const {
DICompositeType DCT(getFieldAs<DICompositeType>(8));
if (DCT.Verify()) {
DIArray A = DCT.getTypeArray();
DIType T(A.getElement(0));
return T.getName();
}
DIType T(getFieldAs<DIType>(8));
return T.getName();
}
/// isLocalToUnit - Return true if this subprogram is local to the current
/// compile unit, like 'static' in C.
unsigned isLocalToUnit() const { return getUnsignedField(9); }
unsigned isDefinition() const { return getUnsignedField(10); }
unsigned getVirtuality() const { return getUnsignedField(11); }
unsigned getVirtualIndex() const { return getUnsignedField(12); }
DICompositeType getContainingType() const {
return getFieldAs<DICompositeType>(13);
}
unsigned isArtificial() const { return getUnsignedField(14); }
unsigned isOptimized() const;
StringRef getFilename() const {
if (getVersion() == llvm::LLVMDebugVersion7)
return getCompileUnit().getFilename();
DIFile F = getFieldAs<DIFile>(6);
return F.getFilename();
}
StringRef getDirectory() const {
if (getVersion() == llvm::LLVMDebugVersion7)
return getCompileUnit().getFilename();
DIFile F = getFieldAs<DIFile>(6);
return F.getDirectory();
}
/// Verify - Verify that a subprogram descriptor is well formed.
bool Verify() const;
/// print - print subprogram.
void print(raw_ostream &OS) const;
/// dump - print subprogram to dbgs() with a newline.
void dump() const;
/// describes - Return true if this subprogram provides debugging
/// information for the function F.
bool describes(const Function *F);
};
/// DIGlobalVariable - This is a wrapper for a global variable.
class DIGlobalVariable : public DIDescriptor {
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); }
DICompileUnit getCompileUnit() const{
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(6);
DIFile F = getFieldAs<DIFile>(6);
return F.getCompileUnit();
}
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); }
/// Verify - Verify that a global variable descriptor is well formed.
bool Verify() const;
/// print - print global variable.
void print(raw_ostream &OS) const;
/// dump - print global variable to dbgs() with a newline.
void dump() const;
};
/// DIVariable - This is a wrapper for a variable (e.g. parameter, local,
/// global etc).
class DIVariable : public DIDescriptor {
public:
explicit DIVariable(const MDNode *N = 0)
: DIDescriptor(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
DICompileUnit getCompileUnit() const{
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(3);
DIFile F = getFieldAs<DIFile>(3);
return F.getCompileUnit();
}
unsigned getLineNumber() const { return getUnsignedField(4); }
DIType getType() const { return getFieldAs<DIType>(5); }
/// 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+6);
}
/// isBlockByrefVariable - Return true if the variable was declared as
/// a "__block" variable (Apple Blocks).
bool isBlockByrefVariable() const {
return getType().isBlockByrefStruct();
}
/// isInlinedFnArgument - Return trule if this variable provides debugging
/// information for an inlined function arguments.
bool isInlinedFnArgument(const Function *CurFn);
/// print - print variable.
void print(raw_ostream &OS) const;
/// dump - print variable to dbgs() with a newline.
void dump() const;
};
/// 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>(1); }
StringRef getDirectory() const { return getContext().getDirectory(); }
StringRef getFilename() const { return getContext().getFilename(); }
unsigned getLineNumber() const { return getUnsignedField(2); }
unsigned getColumnNumber() const { return getUnsignedField(3); }
};
/// DINameSpace - A wrapper for a C++ style name space.
class DINameSpace : public DIScope {
public:
explicit DINameSpace(const MDNode *N = 0) : DIScope(N) {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
StringRef getDirectory() const { return getContext().getDirectory(); }
StringRef getFilename() const { return getContext().getFilename(); }
DICompileUnit getCompileUnit() const{
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(3);
DIFile F = getFieldAs<DIFile>(3);
return F.getCompileUnit();
}
unsigned getLineNumber() const { return getUnsignedField(4); }
bool Verify() 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;
};
/// DIFactory - This object assists with the construction of the various
/// descriptors.
class DIFactory {
Module &M;
LLVMContext& VMContext;
Function *DeclareFn; // llvm.dbg.declare
Function *ValueFn; // llvm.dbg.value
DIFactory(const DIFactory &); // DO NOT IMPLEMENT
void operator=(const DIFactory&); // DO NOT IMPLEMENT
public:
enum ComplexAddrKind { OpPlus=1, OpDeref };
explicit DIFactory(Module &m);
/// GetOrCreateArray - Create an descriptor for an array of descriptors.
/// This implicitly uniques the arrays created.
DIArray GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys);
/// GetOrCreateSubrange - Create a descriptor for a value range. This
/// implicitly uniques the values returned.
DISubrange GetOrCreateSubrange(int64_t Lo, int64_t Hi);
/// CreateCompileUnit - Create a new descriptor for the specified compile
/// unit.
DICompileUnit CreateCompileUnit(unsigned LangID,
StringRef Filename,
StringRef Directory,
StringRef Producer,
bool isMain = false,
bool isOptimized = false,
StringRef Flags = "",
unsigned RunTimeVer = 0);
/// CreateFile - Create a new descriptor for the specified file.
DIFile CreateFile(StringRef Filename, StringRef Directory, DICompileUnit CU);
/// CreateEnumerator - Create a single enumerator value.
DIEnumerator CreateEnumerator(StringRef Name, uint64_t Val);
/// CreateBasicType - Create a basic type like int, float, etc.
DIBasicType CreateBasicType(DIDescriptor Context, StringRef Name,
DIFile F, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
unsigned Encoding);
/// CreateBasicType - Create a basic type like int, float, etc.
DIBasicType CreateBasicTypeEx(DIDescriptor Context, StringRef Name,
DIFile F, unsigned LineNumber,
Constant *SizeInBits, Constant *AlignInBits,
Constant *OffsetInBits, unsigned Flags,
unsigned Encoding);
/// CreateDerivedType - Create a derived type like const qualified type,
/// pointer, typedef, etc.
DIDerivedType CreateDerivedType(unsigned Tag, DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
DIType DerivedFrom);
/// CreateDerivedType - Create a derived type like const qualified type,
/// pointer, typedef, etc.
DIDerivedType CreateDerivedTypeEx(unsigned Tag, DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
Constant *SizeInBits,
Constant *AlignInBits,
Constant *OffsetInBits, unsigned Flags,
DIType DerivedFrom);
/// CreateCompositeType - Create a composite type like array, struct, etc.
DICompositeType CreateCompositeType(unsigned Tag, DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
DIType DerivedFrom,
DIArray Elements,
unsigned RunTimeLang = 0,
MDNode *ContainingType = 0);
/// CreateArtificialType - Create a new DIType with "artificial" flag set.
DIType CreateArtificialType(DIType Ty);
/// CreateCompositeType - Create a composite type like array, struct, etc.
DICompositeType CreateCompositeTypeEx(unsigned Tag, DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
Constant *SizeInBits,
Constant *AlignInBits,
Constant *OffsetInBits,
unsigned Flags,
DIType DerivedFrom,
DIArray Elements,
unsigned RunTimeLang = 0);
/// CreateSubprogram - Create a new descriptor for the specified subprogram.
/// See comments in DISubprogram for descriptions of these fields.
DISubprogram CreateSubprogram(DIDescriptor Context, StringRef Name,
StringRef DisplayName,
StringRef LinkageName,
DIFile F, unsigned LineNo,
DIType Ty, bool isLocalToUnit,
bool isDefinition,
unsigned VK = 0,
unsigned VIndex = 0,
DIType = DIType(),
bool isArtificial = 0,
bool isOptimized = false);
/// CreateSubprogramDefinition - Create new subprogram descriptor for the
/// given declaration.
DISubprogram CreateSubprogramDefinition(DISubprogram &SPDeclaration);
/// CreateGlobalVariable - Create a new descriptor for the specified global.
DIGlobalVariable
CreateGlobalVariable(DIDescriptor Context, StringRef Name,
StringRef DisplayName,
StringRef LinkageName,
DIFile F,
unsigned LineNo, DIType Ty, bool isLocalToUnit,
bool isDefinition, llvm::GlobalVariable *GV);
/// CreateVariable - Create a new descriptor for the specified variable.
DIVariable CreateVariable(unsigned Tag, DIDescriptor Context,
StringRef Name,
DIFile F, unsigned LineNo,
DIType Ty, bool AlwaysPreserve = false);
/// CreateComplexVariable - Create a new descriptor for the specified
/// variable which has a complex address expression for its address.
DIVariable CreateComplexVariable(unsigned Tag, DIDescriptor Context,
const std::string &Name,
DIFile F, unsigned LineNo,
DIType Ty,
SmallVector<Value *, 9> &addr);
/// CreateLexicalBlock - This creates a descriptor for a lexical block
/// with the specified parent context.
DILexicalBlock CreateLexicalBlock(DIDescriptor Context, unsigned Line = 0,
unsigned Col = 0);
/// CreateNameSpace - This creates new descriptor for a namespace
/// with the specified parent context.
DINameSpace CreateNameSpace(DIDescriptor Context, StringRef Name,
DIFile F, unsigned LineNo);
/// CreateLocation - Creates a debug info location.
DILocation CreateLocation(unsigned LineNo, unsigned ColumnNo,
DIScope S, DILocation OrigLoc);
/// CreateLocation - Creates a debug info location.
DILocation CreateLocation(unsigned LineNo, unsigned ColumnNo,
DIScope S, MDNode *OrigLoc = 0);
/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
Instruction *InsertDeclare(llvm::Value *Storage, DIVariable D,
BasicBlock *InsertAtEnd);
/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
Instruction *InsertDeclare(llvm::Value *Storage, DIVariable D,
Instruction *InsertBefore);
/// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
Instruction *InsertDbgValueIntrinsic(llvm::Value *V, uint64_t Offset,
DIVariable D, BasicBlock *InsertAtEnd);
/// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
Instruction *InsertDbgValueIntrinsic(llvm::Value *V, uint64_t Offset,
DIVariable D, Instruction *InsertBefore);
private:
Constant *GetTagConstant(unsigned TAG);
};
bool getLocationInfo(const Value *V, std::string &DisplayName,
std::string &Type, unsigned &LineNo, std::string &File,
std::string &Dir);
/// getDISubprogram - Find subprogram that is enclosing this scope.
DISubprogram getDISubprogram(const MDNode *Scope);
/// getDICompositeType - Find underlying composite type.
DICompositeType getDICompositeType(DIType T);
class DebugInfoFinder {
public:
/// processModule - Process entire module and collect debug info
/// anchors.
void processModule(Module &M);
private:
/// processType - Process DIType.
void processType(DIType DT);
/// processLexicalBlock - Process DILexicalBlock.
void processLexicalBlock(DILexicalBlock LB);
/// processSubprogram - Process DISubprogram.
void processSubprogram(DISubprogram SP);
/// processDeclare - Process DbgDeclareInst.
void processDeclare(DbgDeclareInst *DDI);
/// processLocation - Process DILocation.
void processLocation(DILocation Loc);
/// addCompileUnit - Add compile unit into CUs.
bool addCompileUnit(DICompileUnit CU);
/// addGlobalVariable - Add global variable into GVs.
bool addGlobalVariable(DIGlobalVariable DIG);
// addSubprogram - Add subprgoram into SPs.
bool addSubprogram(DISubprogram SP);
/// addType - Add type into Tys.
bool addType(DIType DT);
public:
typedef SmallVector<MDNode *, 8>::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(); }
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(); }
private:
SmallVector<MDNode *, 8> CUs; // Compile Units
SmallVector<MDNode *, 8> SPs; // Subprograms
SmallVector<MDNode *, 8> GVs; // Global Variables;
SmallVector<MDNode *, 8> TYs; // Types
SmallPtrSet<MDNode *, 64> NodesSeen;
};
} // end namespace llvm
#endif
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