llvm-6502/include/llvm/Analysis/DebugInfo.h

743 lines
26 KiB
C
Raw Normal View History

//===--- 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 NamedMDNode;
class LLVMContext;
class raw_ostream;
class DIFile;
class DISubprogram;
class DILexicalBlock;
class DIVariable;
class DIType;
/// 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 {
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
};
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;
Constant *getConstantField(unsigned Elt) const;
Function *getFunctionField(unsigned Elt) const;
public:
explicit DIDescriptor() : DbgNode(0) {}
explicit DIDescriptor(const MDNode *N) : DbgNode(N) {}
explicit DIDescriptor(const DIFile F);
explicit DIDescriptor(const DISubprogram F);
explicit DIDescriptor(const DILexicalBlock F);
explicit DIDescriptor(const DIVariable F);
explicit DIDescriptor(const DIType F);
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;
bool isUnspecifiedParameter() const;
bool isTemplateTypeParameter() const;
bool isTemplateValueParameter() 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); }
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. [Part 1] Update DebugInfo APIs to accept optional boolean value while creating DICompileUnit to mark the unit as "main" unit. By defaults all units are considered non-main. Update SourceLevelDebugging.html to document "main" compile unit. Update DebugInfo APIs to not accept and encode separate source file/directory entries while creating various llvm.dbg.* entities. There was a recent, yet to be documented, change to include this additional information so no documentation changes are required here. Update DwarfDebug to handle "main" compile unit. If "main" compile unit is seen then all DIEs are inserted into "main" compile unit. All other compile units are used to find source location for llvm.dbg.* values. If there is not any "main" compile unit then create unique compile unit DIEs for each llvm.dbg.compile_unit. [Part 2] Create separate llvm.dbg.compile_unit for each input file. Mark compile unit create for main_input_filename as "main" compile unit. Use appropriate compile unit, based on source location information collected from the tree node, while creating llvm.dbg.* values using DebugInfo APIs. --- This is Part 1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63400 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30 18:20:31 +00:00
/// 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
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. [Part 1] Update DebugInfo APIs to accept optional boolean value while creating DICompileUnit to mark the unit as "main" unit. By defaults all units are considered non-main. Update SourceLevelDebugging.html to document "main" compile unit. Update DebugInfo APIs to not accept and encode separate source file/directory entries while creating various llvm.dbg.* entities. There was a recent, yet to be documented, change to include this additional information so no documentation changes are required here. Update DwarfDebug to handle "main" compile unit. If "main" compile unit is seen then all DIEs are inserted into "main" compile unit. All other compile units are used to find source location for llvm.dbg.* values. If there is not any "main" compile unit then create unique compile unit DIEs for each llvm.dbg.compile_unit. [Part 2] Create separate llvm.dbg.compile_unit for each input file. Mark compile unit create for main_input_filename as "main" compile unit. Use appropriate compile unit, based on source location information collected from the tree node, while creating llvm.dbg.* values using DebugInfo APIs. --- This is Part 1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63400 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30 18:20:31 +00:00
/// situation, the LLVM code generator will include debugging information
/// entities in the compile unit that is marked as main compile unit. The
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. [Part 1] Update DebugInfo APIs to accept optional boolean value while creating DICompileUnit to mark the unit as "main" unit. By defaults all units are considered non-main. Update SourceLevelDebugging.html to document "main" compile unit. Update DebugInfo APIs to not accept and encode separate source file/directory entries while creating various llvm.dbg.* entities. There was a recent, yet to be documented, change to include this additional information so no documentation changes are required here. Update DwarfDebug to handle "main" compile unit. If "main" compile unit is seen then all DIEs are inserted into "main" compile unit. All other compile units are used to find source location for llvm.dbg.* values. If there is not any "main" compile unit then create unique compile unit DIEs for each llvm.dbg.compile_unit. [Part 2] Create separate llvm.dbg.compile_unit for each input file. Mark compile unit create for main_input_filename as "main" compile unit. Use appropriate compile unit, based on source location information collected from the tree node, while creating llvm.dbg.* values using DebugInfo APIs. --- This is Part 1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63400 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30 18:20:31 +00:00
/// code generator accepts maximum one main compile unit per module. If a
/// module does not contain any main compile unit then the code generator
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. [Part 1] Update DebugInfo APIs to accept optional boolean value while creating DICompileUnit to mark the unit as "main" unit. By defaults all units are considered non-main. Update SourceLevelDebugging.html to document "main" compile unit. Update DebugInfo APIs to not accept and encode separate source file/directory entries while creating various llvm.dbg.* entities. There was a recent, yet to be documented, change to include this additional information so no documentation changes are required here. Update DwarfDebug to handle "main" compile unit. If "main" compile unit is seen then all DIEs are inserted into "main" compile unit. All other compile units are used to find source location for llvm.dbg.* values. If there is not any "main" compile unit then create unique compile unit DIEs for each llvm.dbg.compile_unit. [Part 2] Create separate llvm.dbg.compile_unit for each input file. Mark compile unit create for main_input_filename as "main" compile unit. Use appropriate compile unit, based on source location information collected from the tree node, while creating llvm.dbg.* values using DebugInfo APIs. --- This is Part 1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63400 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30 18:20:31 +00:00
/// will emit multiple compile units in the output object file.
bool isMain() const { return getUnsignedField(6) != 0; }
bool isOptimized() const { return getUnsignedField(7) != 0; }
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:
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);
return getFieldAs<DIFile>(3).getCompileUnit();
}
DIFile getFile() const { return getFieldAs<DIFile>(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 isValid() const {
return DbgNode && (isBasicType() || isDerivedType() || isCompositeType());
}
StringRef getDirectory() const {
if (getVersion() == llvm::LLVMDebugVersion7)
return getCompileUnit().getDirectory();
return getFieldAs<DIFile>(3).getDirectory();
}
StringRef getFilename() const {
if (getVersion() == llvm::LLVMDebugVersion7)
return getCompileUnit().getFilename();
return getFieldAs<DIFile>(3).getFilename();
}
/// replaceAllUsesWith - Replace all uses of debug info referenced by
/// this descriptor.
void replaceAllUsesWith(DIDescriptor &D);
void replaceAllUsesWith(MDNode *D);
/// 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); }
/// Verify - Verify that a basic type descriptor is well formed.
bool Verify() const;
/// 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;
/// Verify - Verify that a derived type descriptor is well formed.
bool Verify() const;
/// print - print derived type.
void print(raw_ostream &OS) const;
/// dump - print derived type to dbgs() with a newline.
void dump() const;
};
/// 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);
}
DIArray getTemplateParams() const { return getFieldAs<DIArray>(13); }
/// 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;
};
/// 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); }
};
/// 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); }
uint64_t getValue() const { return getUInt64Field(4); }
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); }
};
/// 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);
return getFieldAs<DIFile>(6).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 {
if (getVersion() <= llvm::LLVMDebugVersion8)
return getUnsignedField(14);
return (getUnsignedField(14) & FlagArtificial) != 0;
}
/// isPrivate - Return true if this subprogram has "private"
/// access specifier.
bool isPrivate() const {
if (getVersion() <= llvm::LLVMDebugVersion8)
return false;
return (getUnsignedField(14) & FlagPrivate) != 0;
}
/// isProtected - Return true if this subprogram has "protected"
/// access specifier.
bool isProtected() const {
if (getVersion() <= llvm::LLVMDebugVersion8)
return false;
return (getUnsignedField(14) & FlagProtected) != 0;
}
/// isExplicit - Return true if this subprogram is marked as explicit.
bool isExplicit() const {
if (getVersion() <= llvm::LLVMDebugVersion8)
return false;
return (getUnsignedField(14) & FlagExplicit) != 0;
}
/// isPrototyped - Return true if this subprogram is prototyped.
bool isPrototyped() const {
if (getVersion() <= llvm::LLVMDebugVersion8)
return false;
return (getUnsignedField(14) & FlagPrototyped) != 0;
}
unsigned isOptimized() const;
StringRef getFilename() const {
if (getVersion() == llvm::LLVMDebugVersion7)
return getCompileUnit().getFilename();
return getFieldAs<DIFile>(6).getFilename();
}
StringRef getDirectory() const {
if (getVersion() == llvm::LLVMDebugVersion7)
return getCompileUnit().getFilename();
return getFieldAs<DIFile>(6).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);
Function *getFunction() const { return getFunctionField(16); }
};
/// 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); }
Constant *getConstant() const { return getConstantField(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) << 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 {
if (getVersion() <= llvm::LLVMDebugVersion8)
return false;
return (getUnsignedField(6) & FlagArtificial) != 0;
}
/// 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); }
unsigned getLineNumber() const { return getUnsignedField(2); }
unsigned getColumnNumber() const { return getUnsignedField(3); }
StringRef getDirectory() const {
StringRef dir = getFieldAs<DIFile>(4).getDirectory();
return !dir.empty() ? dir : getContext().getDirectory();
}
StringRef getFilename() const {
StringRef filename = getFieldAs<DIFile>(4).getFilename();
return !filename.empty() ? filename : getContext().getFilename();
}
};
/// 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 getFieldAs<DIFile>(3).getDirectory();
}
StringRef getFilename() const {
return getFieldAs<DIFile>(3).getFilename();
}
DICompileUnit getCompileUnit() const{
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(3);
return getFieldAs<DIFile>(3).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;
};
/// getDISubprogram - Find subprogram that is enclosing this scope.
DISubprogram getDISubprogram(const MDNode *Scope);
/// getDICompositeType - Find underlying composite type.
DICompositeType getDICompositeType(DIType T);
/// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
/// to hold function specific information.
NamedMDNode *getOrInsertFnSpecificMDNode(Module &M, StringRef Name);
/// getFnSpecificMDNode - Return a NameMDNode, if available, that is
/// suitable to hold function specific information.
NamedMDNode *getFnSpecificMDNode(const Module &M, StringRef Name);
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