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llvm-mirror/include/llvm/DebugInfo.h
Alexey Samsonov 46f9cc5d51 Improve debug info generated with enabled AddressSanitizer. 
When ASan replaces <alloca instruction> with
<offset into a common large alloca>, it should also patch
llvm.dbg.declare calls and replace debug info descriptors to mark
that we've replaced alloca with a value that stores an address
of the user variable, not the user variable itself.

See PR11818 for more context.

llvm-svn: 169984
2012-12-12 14:31:53 +00:00

897 lines
33 KiB
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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/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 Instruction;
class MDNode;
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
};
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() : DbgNode(0) {}
explicit DIDescriptor(const MDNode *N) : DbgNode(N) {}
explicit DIDescriptor(const DIFile F);
explicit DIDescriptor(const DISubprogram F);
explicit DIDescriptor(const DILexicalBlockFile 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;
}
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 isGlobal() const;
bool isUnspecifiedParameter() const;
bool isTemplateTypeParameter() const;
bool isTemplateValueParameter() const;
bool isObjCProperty() 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); }
};
/// 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 {
protected:
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
public:
explicit DIScope(const MDNode *N = 0) : DIDescriptor (N) {}
StringRef getFilename() const;
StringRef getDirectory() 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 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) != 0; }
bool isOptimized() const { return getUnsignedField(7) != 0; }
StringRef getFlags() const { return getStringField(8); }
unsigned getRunTimeVersion() const { return getUnsignedField(9); }
DIArray getEnumTypes() const;
DIArray getRetainedTypes() const;
DIArray getSubprograms() const;
DIArray getGlobalVariables() const;
/// Verify - Verify that a compile unit is well formed.
bool Verify() const;
};
/// DIFile - This is a wrapper for a file.
class DIFile : public DIScope {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const {} // FIXME: Output something?
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{
assert (getVersion() <= LLVMDebugVersion10 && "Invalid CompileUnit!");
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 {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
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 {
protected:
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
// 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;
explicit DIType(const MDNode *N);
explicit DIType() {}
DIScope getContext() const { return getFieldAs<DIScope>(1); }
StringRef getName() const { return getStringField(2); }
DICompileUnit getCompileUnit() const{
assert (getVersion() <= LLVMDebugVersion10 && "Invalid getCompileUnit!");
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 isObjectPointer() const {
return (getFlags() & FlagObjectPointer) != 0;
}
bool isObjcClassComplete() const {
return (getFlags() & FlagObjcClassComplete) != 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();
}
/// 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, etc.
class DIDerivedType : public DIType {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
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;
/// getObjCProperty - Return property node, if this ivar is
/// associated with one.
MDNode *getObjCProperty() const;
StringRef getObjCPropertyName() const {
if (getVersion() > LLVMDebugVersion11)
return StringRef();
return getStringField(10);
}
StringRef getObjCPropertyGetterName() const {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return getStringField(11);
}
StringRef getObjCPropertySetterName() const {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return getStringField(12);
}
bool isReadOnlyObjCProperty() {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return (getUnsignedField(13) & dwarf::DW_APPLE_PROPERTY_readonly) != 0;
}
bool isReadWriteObjCProperty() {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return (getUnsignedField(13) & dwarf::DW_APPLE_PROPERTY_readwrite) != 0;
}
bool isAssignObjCProperty() {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return (getUnsignedField(13) & dwarf::DW_APPLE_PROPERTY_assign) != 0;
}
bool isRetainObjCProperty() {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return (getUnsignedField(13) & dwarf::DW_APPLE_PROPERTY_retain) != 0;
}
bool isCopyObjCProperty() {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return (getUnsignedField(13) & dwarf::DW_APPLE_PROPERTY_copy) != 0;
}
bool isNonAtomicObjCProperty() {
assert (getVersion() <= LLVMDebugVersion11 && "Invalid Request");
return (getUnsignedField(13) & dwarf::DW_APPLE_PROPERTY_nonatomic) != 0;
}
/// 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.
/// FIXME: Why is this a DIDerivedType??
class DICompositeType : public DIDerivedType {
friend class DIDescriptor;
void printInternal(raw_ostream &OS) const;
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;
};
/// 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 {
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); }
DICompileUnit getCompileUnit() const{
assert (getVersion() <= LLVMDebugVersion10 && "Invalid getCompileUnit!");
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();
}
/// getScopeLineNumber - Get the beginning of the scope of the
/// function, not necessarily where the name of the program
/// starts.
unsigned getScopeLineNumber() const { return getUnsignedField(20); }
/// 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(16); }
void replaceFunction(Function *F) { replaceFunctionField(16, F); }
DIArray getTemplateParams() const { return getFieldAs<DIArray>(17); }
DISubprogram getFunctionDeclaration() const {
return getFieldAs<DISubprogram>(18);
}
MDNode *getVariablesNodes() const;
DIArray getVariables() 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); }
DICompileUnit getCompileUnit() const{
assert (getVersion() <= LLVMDebugVersion10 && "Invalid getCompileUnit!");
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(6);
DIFile F = getFieldAs<DIFile>(6);
return F.getCompileUnit();
}
StringRef getFilename() const {
if (getVersion() <= llvm::LLVMDebugVersion10)
return getContext().getFilename();
return getFieldAs<DIFile>(6).getFilename();
}
StringRef getDirectory() const {
if (getVersion() <= llvm::LLVMDebugVersion10)
return getContext().getDirectory();
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); }
/// 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); }
DICompileUnit getCompileUnit() const {
assert (getVersion() <= LLVMDebugVersion10 && "Invalid getCompileUnit!");
if (getVersion() == llvm::LLVMDebugVersion7)
return getFieldAs<DICompileUnit>(3);
DIFile F = getFieldAs<DIFile>(3);
return F.getCompileUnit();
}
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 {
if (getVersion() <= llvm::LLVMDebugVersion8)
return false;
return (getUnsignedField(6) & FlagArtificial) != 0;
}
bool isObjectPointer() const {
return (getUnsignedField(6) & FlagObjectPointer) != 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 {
if (getVersion() <= llvm::LLVMDebugVersion8)
return getUInt64Field(Idx+6);
if (getVersion() == llvm::LLVMDebugVersion9)
return getUInt64Field(Idx+7);
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 trule if this variable provides debugging
/// information for an inlined function arguments.
bool isInlinedFnArgument(const Function *CurFn);
void printExtendedName(raw_ostream &OS) 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();
}
};
/// 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 { return getScope().getContext(); }
unsigned getLineNumber() const { return getScope().getLineNumber(); }
unsigned getColumnNumber() const { return getScope().getColumnNumber(); }
StringRef getDirectory() const {
StringRef dir = getFieldAs<DIFile>(2).getDirectory();
return !dir.empty() ? dir : getContext().getDirectory();
}
StringRef getFilename() const {
StringRef filename = getFieldAs<DIFile>(2).getFilename();
assert(!filename.empty() && "Why'd you create this then?");
return filename;
}
DILexicalBlock getScope() const { return getFieldAs<DILexicalBlock>(1); }
};
/// 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{
assert (getVersion() <= LLVMDebugVersion10 && "Invalid getCompileUnit!");
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;
};
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() {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_readonly) != 0;
}
bool isReadWriteObjCProperty() {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_readwrite) != 0;
}
bool isAssignObjCProperty() {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_assign) != 0;
}
bool isRetainObjCProperty() {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_retain) != 0;
}
bool isCopyObjCProperty() {
return (getUnsignedField(6) & dwarf::DW_APPLE_PROPERTY_copy) != 0;
}
bool isNonAtomicObjCProperty() {
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;
};
/// 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);
class DebugInfoFinder {
public:
/// processModule - Process entire module and collect debug info
/// anchors.
void processModule(const 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(const 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 subprogram 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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