llvm::CodeViewDebug Class Reference

Collects and handles line tables information in a CodeView format. More...

#include "CodeGen/AsmPrinter/CodeViewDebug.h"

Inheritance diagram for llvm::CodeViewDebug:

Classes
struct	LocalVarDef
struct	TypeLoweringScope

Public Member Functions
	CodeViewDebug (AsmPrinter *AP)
void	beginModule (Module *M) override
void	endModule () override
	Emit the COFF section that holds the line table information.
void	beginInstruction (const MachineInstr *MI) override
	Process beginning of an instruction.
Public Member Functions inherited from llvm::DebugHandlerBase
	~DebugHandlerBase () override
void	beginModule (Module *M) override
void	beginInstruction (const MachineInstr *MI) override
	Process beginning of an instruction.
void	endInstruction () override
	Process end of an instruction.
void	beginFunction (const MachineFunction *MF) override
	Gather pre-function debug information.
void	endFunction (const MachineFunction *MF) override
	Gather post-function debug information.
void	beginBasicBlockSection (const MachineBasicBlock &MBB) override
	Process the beginning of a new basic-block-section within a function.
void	endBasicBlockSection (const MachineBasicBlock &MBB) override
	Process the end of a basic-block-section within a function.
MCSymbol *	getLabelBeforeInsn (const MachineInstr *MI)
	Return Label preceding the instruction.
MCSymbol *	getLabelAfterInsn (const MachineInstr *MI)
	Return Label immediately following the instruction.
const InstructionOrdering &	getInstOrdering () const
const LexicalScopes &	getLexicalScopes () const
Public Member Functions inherited from llvm::AsmPrinterHandler
virtual	~AsmPrinterHandler ()
	Pin vtables to this file.
virtual void	markFunctionEnd ()
virtual void	setSymbolSize (const MCSymbol *Sym, uint64_t Size)
	For symbols that have a size designated (e.g.
virtual void	beginCodeAlignment (const MachineBasicBlock &MBB)
virtual void	beginFunclet (const MachineBasicBlock &MBB, MCSymbol *Sym=nullptr)
	Emit target-specific EH funclet machinery.
virtual void	endFunclet ()

Protected Member Functions
void	beginFunctionImpl (const MachineFunction *MF) override
	Gather pre-function debug information.
void	endFunctionImpl (const MachineFunction *) override
	Gather post-function debug information.
bool	moduleIsInFortran ()
	Check if the current module is in Fortran.
Protected Member Functions inherited from llvm::DebugHandlerBase
	DebugHandlerBase (AsmPrinter *A)
void	identifyScopeMarkers ()
	Indentify instructions that are marking the beginning of or ending of a scope.
void	requestLabelBeforeInsn (const MachineInstr *MI)
	Ensure that a label will be emitted before MI.
void	requestLabelAfterInsn (const MachineInstr *MI)
	Ensure that a label will be emitted after MI.
virtual void	skippedNonDebugFunction ()

Additional Inherited Members
Static Public Member Functions inherited from llvm::DebugHandlerBase
static uint64_t	getBaseTypeSize (const DIType *Ty)
	If this type is derived from a base type then return base type size.
static bool	isUnsignedDIType (const DIType *Ty)
	Return true if type encoding is unsigned.
Protected Attributes inherited from llvm::DebugHandlerBase
AsmPrinter *	Asm = nullptr
	Target of debug info emission.
MachineModuleInfo *	MMI = nullptr
	Collected machine module information.
DebugLoc	PrevInstLoc
	Previous instruction's location information.
MCSymbol *	PrevLabel = nullptr
const MachineBasicBlock *	PrevInstBB = nullptr
const MachineInstr *	PrologEndLoc
	This location indicates end of function prologue and beginning of function body.
const MachineBasicBlock *	EpilogBeginBlock = nullptr
	This block includes epilogue instructions.
const MachineInstr *	CurMI = nullptr
	If nonnull, stores the current machine instruction we're processing.
LexicalScopes	LScopes
DbgValueHistoryMap	DbgValues
	History of DBG_VALUE and clobber instructions for each user variable.
DbgLabelInstrMap	DbgLabels
	Mapping of inlined labels and DBG_LABEL machine instruction.
DenseMap< const MachineInstr *, MCSymbol * >	LabelsBeforeInsn
	Maps instruction with label emitted before instruction.
DenseMap< const MachineInstr *, MCSymbol * >	LabelsAfterInsn
	Maps instruction with label emitted after instruction.

Detailed Description

Collects and handles line tables information in a CodeView format.

Definition at line 55 of file CodeViewDebug.h.

Constructor & Destructor Documentation

CodeViewDebug()

CodeViewDebug::CodeViewDebug

(

AsmPrinter *

AP

)

Definition at line 135 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, and llvm::DebugHandlerBase::DebugHandlerBase().

Referenced by llvm::CodeViewDebug::TypeLoweringScope::TypeLoweringScope().

Member Function Documentation

beginFunctionImpl()

void CodeViewDebug::beginFunctionImpl ( const MachineFunction * MF )

overrideprotectedvirtual

Gather pre-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 1492 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::classifyEHPersonality(), llvm::MachineFunction::exposesReturnsTwice(), llvm::codeview::FramePtr, llvm::MachineInstr::FrameSetup, llvm::MachineFrameInfo::getCVBytesOfCalleeSavedRegisters(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineFunction::getFunction(), llvm::MachineFrameInfo::getOffsetAdjustment(), llvm::Function::getPersonalityFn(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::codeview::HasAlloca, llvm::codeview::HasExceptionHandling, llvm::Function::hasFnAttribute(), llvm::TargetFrameLowering::hasFP(), llvm::MachineFunction::hasInlineAsm(), llvm::codeview::HasInlineAssembly, llvm::Function::hasOptNone(), llvm::Function::hasOptSize(), llvm::Function::hasPersonalityFn(), llvm::Function::hasProfileData(), llvm::codeview::HasSetJmp, llvm::Function::hasStackProtectorFnAttr(), llvm::MachineFrameInfo::hasStackProtectorIndex(), llvm::codeview::HasStructuredExceptionHandling, llvm::MachineFrameInfo::hasVarSizedObjects(), llvm::Function::insert(), llvm::isAsynchronousEHPersonality(), isThumb(), llvm::codeview::MarkedInline, MBB, MI, llvm::DebugHandlerBase::MMI, llvm::codeview::Naked, llvm::None, llvm::codeview::None, llvm::codeview::OptimizedForSpeed, llvm::codeview::ProfileGuidedOptimization, llvm::DebugHandlerBase::PrologEndLoc, llvm::DebugHandlerBase::requestLabelAfterInsn(), llvm::DebugHandlerBase::requestLabelBeforeInsn(), llvm::codeview::SafeBuffers, llvm::codeview::SecurityChecks, llvm::codeview::StackPtr, llvm::codeview::StrictSecurityChecks, llvm::Triple::thumb, TRI, and llvm::codeview::ValidProfileCounts.

beginInstruction()

void CodeViewDebug::beginInstruction ( const MachineInstr * MI )

overridevirtual

Process beginning of an instruction.

Reimplemented from llvm::AsmPrinterHandler.

Definition at line 3140 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::DebugHandlerBase::beginInstruction(), DL, llvm::MachineInstr::FrameSetup, isUsableDebugLoc(), MI, and llvm::DebugHandlerBase::PrevInstBB.

beginModule()

void CodeViewDebug::beginModule ( Module * M )

overridevirtual

Reimplemented from llvm::AsmPrinterHandler.

Definition at line 613 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::iterator_range< IteratorT >::begin(), llvm::cast(), llvm::mdconst::extract_or_null(), llvm::DISourceLanguageName::getName(), llvm::DISourceLanguageName::hasVersionedName(), llvm::ConstantInt::isZero(), mapArchToCVCPUType(), MapDWARFLanguageToCVLang(), llvm::DebugHandlerBase::MMI, llvm::DICompileUnit::NoDebug, and llvm::NamedMDNode::operands().

endFunctionImpl()

void CodeViewDebug::endFunctionImpl ( const MachineFunction * MF )

overrideprotectedvirtual

Gather post-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 3083 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::dyn_cast(), llvm::get(), llvm::MachineFunction::getCodeViewAnnotations(), llvm::MachineFunction::getFunction(), llvm::DebugHandlerBase::getLabelAfterInsn(), llvm::DebugHandlerBase::getLabelBeforeInsn(), llvm::Function::getSubprogram(), isThumb(), llvm::DebugHandlerBase::LScopes, MBB, MI, llvm::DebugHandlerBase::MMI, and llvm::Triple::thumb.

endModule()

void CodeViewDebug::endModule ( )

overridevirtual

Emit the COFF section that holds the line table information.

Implements llvm::AsmPrinterHandler.

Definition at line 655 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, P, and llvm::codeview::Symbols.

moduleIsInFortran()

bool llvm::CodeViewDebug::moduleIsInFortran ( )

inlineprotected

Check if the current module is in Fortran.

Definition at line 518 of file CodeViewDebug.h.

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

• lib/CodeGen/AsmPrinter/CodeViewDebug.h
• lib/CodeGen/AsmPrinter/CodeViewDebug.cpp