LLVM: llvm::DebugHandlerBase Class Reference (original) (raw)

Base class for debug information backends. More...

#include "[llvm/CodeGen/DebugHandlerBase.h](DebugHandlerBase%5F8h%5Fsource.html)"

Public Member Functions
virtual ~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
- Public Member Functions inherited from llvm::AsmPrinterHandler
virtual ~AsmPrinterHandler ()
Pin vtables to this file.
virtual void beginModule (Module *M)
virtual void endModule ()=0
Emit all sections that should come after the content.
virtual void beginFunction (const MachineFunction *MF)=0
Gather pre-function debug information.
virtual void markFunctionEnd ()
virtual void endFunction (const MachineFunction *MF)=0
Gather post-function debug information.
virtual void beginBasicBlockSection (const MachineBasicBlock &MBB)
Process the beginning of a new basic-block-section within a function.
virtual void endBasicBlockSection (const MachineBasicBlock &MBB)
Process the end of a basic-block-section within a function.
virtual void setSymbolSize (const MCSymbol *Sym, uint64_t Size)
For symbols that have a size designated (e.g.
virtual void beginInstruction (const MachineInstr *MI)
Process beginning of an instruction.
virtual void endInstruction ()
Process end of an instruction.
virtual void beginCodeAlignment (const MachineBasicBlock &MBB)
virtual void beginFunclet (const MachineBasicBlock &MBB, MCSymbol *Sym=nullptr)
Emit target-specific EH funclet machinery.
virtual void endFunclet ()
Static Public Member Functions
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 Member Functions
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 beginFunctionImpl (const MachineFunction *MF)=0
virtual void endFunctionImpl (const MachineFunction *MF)=0
virtual void skippedNonDebugFunction ()
Protected Attributes
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.

Base class for debug information backends.

Common functionality related to tracking which variables and scopes are alive at a given PC live here.

Definition at line 53 of file DebugHandlerBase.h.

DebugHandlerBase::DebugHandlerBase ( AsmPrinter * A) protected

◆ ~DebugHandlerBase()

DebugHandlerBase::~DebugHandlerBase ( ) overridevirtualdefault

◆ beginBasicBlockSection()

◆ beginFunction()

Gather pre-function debug information.

Every beginFunction(MF) call should be followed by an endFunction(MF) call.

Implements llvm::AsmPrinterHandler.

Definition at line 255 of file DebugHandlerBase.cpp.

References llvm::any_of(), Asm, assert(), beginFunctionImpl(), llvm::calculateDbgEntityHistory(), DbgLabels, DbgValues, llvm::DbgValueHistoryMap::dump(), llvm::LexicalScopes::empty(), llvm::DbgValueHistoryMap::empty(), llvm::DbgLabelInstrMap::empty(), llvm::getDISubprogram(), llvm::MachineFunction::getFunction(), llvm::AsmPrinter::getFunctionBegin(), llvm::MachineFunction::getName(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::DILocalVariable::getScope(), llvm::MachineFunction::getSubtarget(), hasDebugInfo(), I, identifyScopeMarkers(), llvm::LexicalScopes::initialize(), llvm::InstructionOrdering::initialize(), llvm::DILocalVariable::isParameter(), LabelsBeforeInsn, LLVM_DEBUG, LScopes, llvm::AsmPrinter::MF, MI, PrevInstBB, PrevInstLoc, PrevLabel, requestLabelAfterInsn(), requestLabelBeforeInsn(), skippedNonDebugFunction(), llvm::DbgValueHistoryMap::trimLocationRanges(), and TrimVarLocs.

◆ beginFunctionImpl()

virtual void llvm::DebugHandlerBase::beginFunctionImpl ( const MachineFunction * MF) protectedpure virtual

◆ beginInstruction()

Process beginning of an instruction.

Reimplemented from llvm::AsmPrinterHandler.

Reimplemented in llvm::CodeViewDebug, llvm::DwarfDebug, and llvm::BTFDebug.

Definition at line 353 of file DebugHandlerBase.cpp.

References Asm, assert(), llvm::MCContext::createTempSymbol(), CurMI, llvm::MachineModuleInfo::getContext(), llvm::AsmPrinter::hasDebugInfo(), I, LabelsBeforeInsn, MI, MMI, llvm::AsmPrinter::OutStreamer, and PrevLabel.

Referenced by llvm::CodeViewDebug::beginInstruction(), llvm::DwarfDebug::beginInstruction(), and llvm::BTFDebug::beginInstruction().

◆ beginModule()

void DebugHandlerBase::beginModule ( Module * M) overridevirtual

◆ endBasicBlockSection()

Process the end of a basic-block-section within a function.

When basic-block-sections are enabled, called after the last block in each such section (including the last section in the function). When basic-block-sections are disabled, called at the end of a function, immediately prior to markFunctionEnd.

Reimplemented from llvm::AsmPrinterHandler.

Definition at line 430 of file DebugHandlerBase.cpp.

References PrevLabel.

◆ endFunction()

◆ endFunctionImpl()

virtual void llvm::DebugHandlerBase::endFunctionImpl ( const MachineFunction * MF) protectedpure virtual

◆ endInstruction()

void DebugHandlerBase::endInstruction ( ) overridevirtual

Process end of an instruction.

Reimplemented from llvm::AsmPrinterHandler.

Definition at line 379 of file DebugHandlerBase.cpp.

References Asm, assert(), llvm::MCContext::createTempSymbol(), CurMI, llvm::MachineModuleInfo::getContext(), llvm::MachineBasicBlock::getEndSymbol(), llvm::ilist_node_with_parent< NodeTy, ParentTy, Options >::getNextNode(), llvm::MachineInstr::getParent(), llvm::AsmPrinter::hasDebugInfo(), I, llvm::MachineBasicBlock::isEndSection(), llvm::MachineInstr::isMetaInstruction(), LabelsAfterInsn, MMI, llvm::AsmPrinter::OutStreamer, PrevInstBB, and PrevLabel.

◆ getBaseTypeSize()

◆ getInstOrdering()

◆ getLabelAfterInsn()

◆ getLabelBeforeInsn()

◆ identifyScopeMarkers()

void DebugHandlerBase::identifyScopeMarkers ( ) protected

Indentify instructions that are marking the beginning of or ending of a scope.

Definition at line 114 of file DebugHandlerBase.cpp.

References llvm::SmallVectorImpl< T >::append(), assert(), llvm::SmallVectorBase< Size_T >::empty(), llvm::LexicalScope::getChildren(), llvm::LexicalScopes::getCurrentFunctionScope(), llvm::LexicalScope::getRanges(), llvm::LexicalScope::isAbstractScope(), LScopes, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), requestLabelAfterInsn(), and requestLabelBeforeInsn().

Referenced by beginFunction().

◆ isUnsignedDIType()

◆ requestLabelAfterInsn()

void llvm::DebugHandlerBase::requestLabelAfterInsn ( const MachineInstr * MI) inlineprotected

◆ requestLabelBeforeInsn()

void llvm::DebugHandlerBase::requestLabelBeforeInsn ( const MachineInstr * MI) inlineprotected

◆ skippedNonDebugFunction()

virtual void llvm::DebugHandlerBase::skippedNonDebugFunction ( ) inlineprotectedvirtual

◆ Asm

Target of debug info emission.

Definition at line 58 of file DebugHandlerBase.h.

Referenced by llvm::DwarfDebug::addDwarfTypeUnitType(), llvm::DwarfDebug::beginCodeAlignment(), beginFunction(), llvm::CodeViewDebug::beginFunctionImpl(), llvm::DwarfDebug::beginFunctionImpl(), llvm::BTFDebug::beginFunctionImpl(), beginInstruction(), llvm::CodeViewDebug::beginInstruction(), llvm::DwarfDebug::beginInstruction(), llvm::BTFDebug::beginInstruction(), beginModule(), llvm::CodeViewDebug::beginModule(), llvm::DwarfDebug::beginModule(), llvm::DwarfDebug::DwarfDebug(), llvm::DwarfDebug::emitDebugLocEntry(), llvm::DwarfDebug::emitDebugLocEntryLocation(), llvm::DwarfDebug::emitInitialLocDirective(), endFunction(), llvm::CodeViewDebug::endFunctionImpl(), llvm::DwarfDebug::endFunctionImpl(), endInstruction(), llvm::CodeViewDebug::endModule(), llvm::DwarfDebug::endModule(), llvm::DwarfDebug::getDwarfCompileUnitIDForLineTable(), llvm::DwarfDebug::getDwarfSectionOffsetForm(), llvm::DwarfDebug::getDwarfVersion(), and llvm::DwarfDebug::terminateLineTable().

◆ CurMI

◆ DbgLabels

◆ DbgValues

◆ EpilogBeginBlock

◆ LabelsAfterInsn

◆ LabelsBeforeInsn

◆ LScopes

◆ MMI

◆ PrevInstBB

◆ PrevInstLoc

DebugLoc llvm::DebugHandlerBase::PrevInstLoc protected

◆ PrevLabel

MCSymbol* llvm::DebugHandlerBase::PrevLabel = nullptr protected

◆ PrologEndLoc

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