LLVM 22.0.0git
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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:
[legend]

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
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 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 1489 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 3137 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 615 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::iterator_range< IteratorT >::begin(), llvm::cast(), llvm::mdconst::extract_or_null(), llvm::ConstantInt::isZero(), mapArchToCVCPUType(), MapDWLangToCVLang(), 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 3080 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 652 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.

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