LLVM: llvm::DwarfDebug Class Reference

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Collects and handles dwarf debug information. More...

#include <DwarfDebug.h>

Public Member Functions
	DwarfDebug (AsmPrinter A, Module M)

void	insertDIE (const MDNode TypeMD, DIE Die)

DIE *	getDIE (const MDNode *TypeMD)

void	beginModule ()
	Emit all Dwarf sections that should come prior to the content. More...

void	endModule ()
	Emit all Dwarf sections that should come after the content. More...

void	beginFunction (const MachineFunction *MF)
	Gather pre-function debug information. More...

void	endFunction (const MachineFunction *MF)
	Gather and emit post-function debug information. More...

void	beginInstruction (const MachineInstr *MI)
	Process beginning of an instruction. More...

void	endInstruction (const MachineInstr *MI)
	Process end of an instruction. More...

void	addTypeUnitType (DIE *Die)
	Add a DIE to the set of types that we're going to pull into type units. More...

void	addArangeLabel (SymbolCU SCU)
	Add a label so that arange data can be generated for it. More...

void	setSymbolSize (const MCSymbol *Sym, uint64_t Size)
	For symbols that have a size designated (e.g. common symbols), this tracks that size. More...

unsigned	getOrCreateSourceID (StringRef DirName, StringRef FullName, unsigned CUID)
	Look up the source id with the given directory and source file names. If none currently exists, create a new id and insert it in the SourceIds map. More...

void	emitDIE (DIE Die, ArrayRef< DIEAbbrev > Abbrevs)
	Recursively Emits a debug information entry. More...

bool	useDwarfAccelTables ()
	Returns whether or not to emit tables that dwarf consumers can use to accelerate lookup. More...

bool	useSplitDwarf ()
	Returns whether or not to change the current debug info for the split dwarf proposal support. More...

unsigned	getDwarfVersion () const
	Returns the Dwarf Version. More...

template<typename T >
T	resolve (DIRef< T > Ref) const
	Find the MDNode for the given reference. More...

bool	isSubprogramContext (const MDNode *Context)

Detailed Description

Collects and handles dwarf debug information.

Definition at line 313 of file DwarfDebug.h.

Constructor & Destructor Documentation

DwarfDebug::DwarfDebug	(	AsmPrinter *	A,
		Module *	M
	)

Definition at line 181 of file DwarfDebug.cpp.

References beginModule(), DbgTimerName, llvm::Reloc::Default, DwarfAccelTables, DWARFGroupName, DwarfPubSections, getDwarfVersionFromModule(), llvm::MachineModuleInfo::getModule(), llvm::AsmPrinter::getTargetTriple(), SplitDwarf, T, and llvm::TimePassesIsEnabled.

Member Function Documentation

void llvm::DwarfDebug::addArangeLabel ( SymbolCU SCU )

inline

Add a label so that arange data can be generated for it.

Definition at line 701 of file DwarfDebug.h.

Referenced by llvm::CompileUnit::addLabelAddress(), and llvm::CompileUnit::addOpAddress().

void llvm::DwarfDebug::addTypeUnitType ( DIE * Die )

inline

Add a DIE to the set of types that we're going to pull into type units.

Definition at line 698 of file DwarfDebug.h.

void DwarfDebug::beginFunction ( const MachineFunction * MF )

Gather pre-function debug information.

Definition at line 1592 of file DwarfDebug.cpp.

References llvm::SmallVectorTemplateCommon< T >::back(), llvm::MachineFunction::back(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::begin(), llvm::MachineFunction::begin(), llvm::dbgs(), DEBUG, DWARF2_FLAG_IS_STMT, llvm::MCStreamer::EmitLabel(), llvm::SmallVectorBase::empty(), llvm::LexicalScopes::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::end(), llvm::MachineBasicBlock::end(), llvm::MachineFunction::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::find(), llvm::MachineInstr::FrameSetup, llvm::DebugLoc::getCol(), llvm::Function::getContext(), llvm::MCStreamer::getContext(), llvm::DIVariable::getContext(), llvm::LexicalScopes::getCurrentFunctionScope(), llvm::MachineInstr::getDebugLoc(), llvm::getDISubprogram(), llvm::MachineInstr::getFlag(), getFnDebugLoc(), llvm::MachineFunction::getFunction(), llvm::AsmPrinter::getFunctionNumber(), llvm::MachineBasicBlock::getLastNonDebugInstr(), llvm::DebugLoc::getLine(), llvm::MachineInstr::getNumOperands(), llvm::MCRegisterInfo::getNumRegs(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::TargetMachine::getRegisterInfo(), llvm::DebugLoc::getScope(), llvm::LexicalScope::getScopeNode(), llvm::DIDescriptor::getTag(), llvm::AsmPrinter::GetTempSymbol(), llvm::CompileUnit::getUniqueID(), llvm::MachineModuleInfo::hasDebugInfo(), llvm::TargetMachine::hasMCUseLoc(), llvm::MCStreamer::hasRawTextSupport(), I, llvm::ARM_PROC::IE, llvm::LexicalScopes::initialize(), isDbgValueInDefinedReg(), llvm::MachineInstr::isDebugValue(), llvm::MachineInstr::isIdenticalTo(), llvm::MachineInstr::isLabel(), llvm::DebugLoc::isUnknown(), llvm::MCRegAliasIterator::isValid(), llvm::DIDescriptor::isVariable(), llvm::A64CC::MI, llvm::next(), llvm::MachineInstr::operands_begin(), llvm::MachineInstr::operands_end(), llvm::AsmPrinter::OutStreamer, llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::pop_back(), llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::MCContext::setDwarfCompileUnitID(), llvm::SmallVectorTemplateCommon< T >::size(), and llvm::AsmPrinter::TM.

Referenced by llvm::AsmPrinter::EmitFunctionHeader().

void DwarfDebug::beginInstruction ( const MachineInstr * MI )

Process beginning of an instruction.

Definition at line 1467 of file DwarfDebug.cpp.

References llvm::MCContext::CreateTempSymbol(), DWARF2_FLAG_IS_STMT, DWARF2_FLAG_PROLOGUE_END, llvm::MCStreamer::EmitLabel(), llvm::DebugLoc::getCol(), llvm::Function::getContext(), llvm::MachineModuleInfo::getContext(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFunction(), llvm::DebugLoc::getLine(), llvm::DebugLoc::getScope(), I, llvm::MachineInstr::isDebugValue(), llvm::DebugLoc::isUnknown(), llvm::AsmPrinter::MF, llvm::AsmPrinter::OutStreamer, and UnknownLocations.

Referenced by llvm::AsmPrinter::EmitFunctionBody().

void DwarfDebug::beginModule ( )

Emit all Dwarf sections that should come prior to the content.

Definition at line 896 of file DwarfDebug.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin(), DisableDebugInfoPrinting, llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::generateDITypeIdentifierMap(), llvm::DIArray::getElement(), llvm::MachineModuleInfo::getModule(), llvm::Module::getNamedMetadata(), llvm::DIArray::getNumElements(), llvm::NamedMDNode::getNumOperands(), llvm::AsmPrinter::getObjFileLowering(), llvm::NamedMDNode::getOperand(), llvm::MCObjectFileInfo::getTextSection(), llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), and llvm::MachineModuleInfo::setDebugInfoAvailability().

Referenced by DwarfDebug().

void DwarfDebug::emitDIE	(	DIE *	Die,
		ArrayRef< DIEAbbrev * >	Abbrevs
	)

Recursively Emits a debug information entry.

Definition at line 2041 of file DwarfDebug.cpp.

References llvm::dwarf::AccessibilityString(), llvm::MCStreamer::AddComment(), llvm::dwarf::AttributeString(), llvm::MCAsmInfo::doesDwarfUseRelocationsAcrossSections(), llvm::dwarf::DW_CHILDREN_yes, llvm::AsmPrinter::EmitInt32(), llvm::AsmPrinter::EmitInt8(), llvm::AsmPrinter::EmitLabelDifference(), llvm::AsmPrinter::EmitLabelOffsetDifference(), llvm::AsmPrinter::EmitLabelPlusOffset(), llvm::AsmPrinter::EmitSectionOffset(), llvm::AsmPrinter::EmitULEB128(), llvm::DIE::getAbbrevNumber(), llvm::DIE::getChildren(), llvm::DIEAbbrev::getChildrenFlag(), llvm::DIE::getCompileUnit(), llvm::DIEAbbrev::getData(), llvm::CompileUnit::getDebugInfoOffset(), llvm::DIEEntry::getEntry(), llvm::DIE::getOffset(), llvm::DIEEntry::getRefAddrSize(), llvm::DIE::getSize(), llvm::DIEAbbrev::getTag(), llvm::DIEInteger::getValue(), llvm::DIE::getValues(), llvm::AsmPrinter::isVerbose(), llvm::AsmPrinter::MAI, N, llvm::AsmPrinter::OutStreamer, llvm::SmallVectorTemplateCommon< T >::size(), llvm::Module::size(), llvm::dwarf::TagString(), useSplitDwarf(), and llvm::Twine::utohexstr().

Referenced by llvm::DwarfUnits::emitUnits().

void DwarfDebug::endFunction ( const MachineFunction * MF )

Gather and emit post-function debug information.

Definition at line 1819 of file DwarfDebug.cpp.

References llvm::CompileUnit::addFlag(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::begin(), llvm::cleanseInlinedVariable(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::clear(), llvm::DeleteContainerPointers(), llvm::TargetOptions::DisableFramePointerElim(), llvm::MCStreamer::EmitLabel(), llvm::LexicalScopes::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::end(), llvm::LexicalScopes::findAbstractScope(), llvm::LexicalScopes::getAbstractScopesList(), llvm::MCStreamer::getContext(), llvm::DIVariable::getContext(), llvm::LexicalScopes::getCurrentFunctionScope(), llvm::DIArray::getElement(), llvm::AsmPrinter::getFunctionNumber(), llvm::DIArray::getNumElements(), llvm::LexicalScope::getScopeNode(), llvm::MachineFunction::getTarget(), llvm::AsmPrinter::GetTempSymbol(), llvm::DISubprogram::getVariables(), llvm::MachineModuleInfo::hasDebugInfo(), I, llvm::SmallPtrSet< PtrType, SmallSize >::insert(), llvm::DIDescriptor::isSubprogram(), llvm::DIDescriptor::isVariable(), llvm::TargetMachine::Options, llvm::AsmPrinter::OutStreamer, llvm::MCContext::setDwarfCompileUnitID(), and llvm::ArrayRef< T >::size().

Referenced by llvm::AsmPrinter::EmitFunctionBody().

void DwarfDebug::endInstruction ( const MachineInstr * MI )

Process end of an instruction.

Definition at line 1509 of file DwarfDebug.cpp.

References llvm::MCContext::CreateTempSymbol(), llvm::MCStreamer::EmitLabel(), llvm::MachineModuleInfo::getContext(), I, llvm::MachineInstr::isDebugValue(), and llvm::AsmPrinter::OutStreamer.

Referenced by llvm::AsmPrinter::EmitFunctionBody().

void DwarfDebug::endModule ( )

Emit all Dwarf sections that should come after the content.

Definition at line 1147 of file DwarfDebug.cpp.

References llvm::DwarfUnits::emitAddresses(), for(), GenerateGnuPubSections, llvm::MCObjectFileInfo::getDwarfAddrSection(), llvm::AsmPrinter::getObjFileLowering(), I, useDwarfAccelTables(), and useSplitDwarf().

Referenced by llvm::AsmPrinter::doFinalization().

DIE* llvm::DwarfDebug::getDIE ( const MDNode * TypeMD )

inline

Definition at line 673 of file DwarfDebug.h.

Referenced by llvm::CompileUnit::getDIE().

unsigned llvm::DwarfDebug::getDwarfVersion ( ) const

inline

Returns the Dwarf Version.

Definition at line 727 of file DwarfDebug.h.

Referenced by llvm::CompileUnit::addFlag(), llvm::CompileUnit::constructVariableDIE(), llvm::CompileUnit::emitHeader(), and llvm::DIEEntry::getRefAddrSize().

unsigned DwarfDebug::getOrCreateSourceID	(	StringRef	DirName,
		StringRef	FullName,
		unsigned	CUID
	)

Look up the source id with the given directory and source file names. If none currently exists, create a new id and insert it in the SourceIds map.

Definition at line 677 of file DwarfDebug.cpp.

References llvm::MCStreamer::EmitDwarfFileDirective(), llvm::StringRef::empty(), llvm::StringMapEntry< ValueTy >::getValue(), llvm::TargetMachine::hasMCUseLoc(), llvm::MCStreamer::hasRawTextSupport(), llvm::AsmPrinter::OutStreamer, llvm::AsmPrinter::TM, and llvm::utostr().

Referenced by llvm::CompileUnit::addSourceLine().

void llvm::DwarfDebug::insertDIE	(	const MDNode *	TypeMD,
		DIE *	Die
	)

inline

Definition at line 670 of file DwarfDebug.h.

Referenced by llvm::CompileUnit::insertDIE().

bool DwarfDebug::isSubprogramContext ( const MDNode * Context )

isSubprogramContext - Return true if Context is either a subprogram or another context nested inside a subprogram.

Definition at line 355 of file DwarfDebug.cpp.

References llvm::DIDescriptor::isSubprogram(), llvm::DIDescriptor::isType(), and resolve().

Referenced by llvm::CompileUnit::createGlobalVariableDIE().

template<typename T >

T llvm::DwarfDebug::resolve ( DIRef< T > Ref ) const

inline

Find the MDNode for the given reference.

Definition at line 730 of file DwarfDebug.h.

References llvm::DIRef< T >::resolve().

Referenced by getBaseTypeSize(), isSubprogramContext(), isTypeSigned(), isTypeUnitScoped(), and isUnsignedDIType().

void llvm::DwarfDebug::setSymbolSize	(	const MCSymbol *	Sym,
		uint64_t	Size
	)

inline

For symbols that have a size designated (e.g. common symbols), this tracks that size.

Definition at line 705 of file DwarfDebug.h.

Referenced by llvm::AsmPrinter::EmitGlobalVariable().

bool llvm::DwarfDebug::useDwarfAccelTables ( )

inline

Returns whether or not to emit tables that dwarf consumers can use to accelerate lookup.

Definition at line 720 of file DwarfDebug.h.

Referenced by endModule().

bool llvm::DwarfDebug::useSplitDwarf ( )

inline

Returns whether or not to change the current debug info for the split dwarf proposal support.

Definition at line 724 of file DwarfDebug.h.

Referenced by llvm::CompileUnit::addLabelAddress(), llvm::CompileUnit::addOpAddress(), llvm::CompileUnit::addString(), llvm::CompileUnit::createGlobalVariableDIE(), emitDIE(), and endModule().

The documentation for this class was generated from the following files: