LLVM  15.0.0git
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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:
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Collaboration diagram for llvm::CodeViewDebug:
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Classes

struct  LocalVarDef
 
struct  TypeLoweringScope
 

Public Member Functions

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

Protected Member Functions

void beginFunctionImpl (const MachineFunction *MF) override
 Gather pre-function debug information. More...
 
void endFunctionImpl (const MachineFunction *) override
 Gather post-function debug information. More...
 
bool moduleIsInFortran ()
 Check if the current module is in Fortran. More...
 
- 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. More...
 
void requestLabelBeforeInsn (const MachineInstr *MI)
 Ensure that a label will be emitted before MI. More...
 
void requestLabelAfterInsn (const MachineInstr *MI)
 Ensure that a label will be emitted after MI. More...
 
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. More...
 
static bool isUnsignedDIType (const DIType *Ty)
 Return true if type encoding is unsigned. More...
 
- Protected Attributes inherited from llvm::DebugHandlerBase
AsmPrinter * Asm
 Target of debug info emission. More...
 
MachineModuleInfo * MMI
 Collected machine module information. More...
 
DebugLoc PrevInstLoc
 Previous instruction's location information. More...
 
MCSymbol * PrevLabel = nullptr
 
const MachineBasicBlock * PrevInstBB = nullptr
 
DebugLoc PrologEndLoc
 This location indicates end of function prologue and beginning of function body. More...
 
const MachineInstr * CurMI = nullptr
 If nonnull, stores the current machine instruction we're processing. More...
 
LexicalScopes LScopes
 
DbgValueHistoryMap DbgValues
 History of DBG_VALUE and clobber instructions for each user variable. More...
 
DbgLabelInstrMap DbgLabels
 Mapping of inlined labels and DBG_LABEL machine instruction. More...
 
DenseMap< const MachineInstr *, MCSymbol * > LabelsBeforeInsn
 Maps instruction with label emitted before instruction. More...
 
DenseMap< const MachineInstr *, MCSymbol * > LabelsAfterInsn
 Maps instruction with label emitted after instruction. More...
 

Detailed Description

Collects and handles line tables information in a CodeView format.

Definition at line 52 of file CodeViewDebug.h.

Constructor & Destructor Documentation

◆ CodeViewDebug()

CodeViewDebug::CodeViewDebug ( AsmPrinter *  AP)

Definition at line 134 of file CodeViewDebug.cpp.

Member Function Documentation

◆ beginFunctionImpl()

void CodeViewDebug::beginFunctionImpl ( const MachineFunction *  MF)
overrideprotectedvirtual

Gather pre-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 1440 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::classifyEHPersonality(), llvm::MCStreamer::EmitCVFuncIdDirective(), llvm::MachineFunction::exposesReturnsTwice(), FramePtr, llvm::MachineInstr::FrameSetup, llvm::MachineFrameInfo::getCVBytesOfCalleeSavedRegisters(), llvm::DebugLoc::getFnDebugLoc(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineFunction::getFunction(), llvm::AsmPrinter::getFunctionBegin(), llvm::MachineFrameInfo::getOffsetAdjustment(), llvm::TargetMachine::getOptLevel(), llvm::Function::getPersonalityFn(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::Function::hasFnAttribute(), llvm::TargetFrameLowering::hasFP(), llvm::MachineFunction::hasInlineAsm(), llvm::Function::hasOptNone(), llvm::Function::hasOptSize(), llvm::Function::hasPersonalityFn(), llvm::Function::hasProfileData(), llvm::MachineFrameInfo::hasStackProtectorIndex(), llvm::TargetRegisterInfo::hasStackRealignment(), llvm::MachineFrameInfo::hasVarSizedObjects(), llvm::isAsynchronousEHPersonality(), MBB, MI, llvm::None, llvm::CodeGenOpt::None, llvm::DebugHandlerBase::PrologEndLoc, llvm::DebugHandlerBase::requestLabelAfterInsn(), llvm::DebugHandlerBase::requestLabelBeforeInsn(), llvm::AsmPrinter::TM, and TRI.

◆ beginInstruction()

void CodeViewDebug::beginInstruction ( const MachineInstr *  MI)
overridevirtual

Process beginning of an instruction.

Reimplemented from llvm::DebugHandlerBase.

Definition at line 3057 of file CodeViewDebug.cpp.

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

◆ beginModule()

void CodeViewDebug::beginModule ( Module *  M)
overridevirtual

Reimplemented from llvm::DebugHandlerBase.

Definition at line 608 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::Triple::getArch(), llvm::MCObjectFileInfo::getCOFFDebugSymbolsSection(), llvm::AsmPrinter::getObjFileLowering(), llvm::MachineModuleInfo::hasDebugInfo(), M, mapArchToCVCPUType(), and llvm::DebugHandlerBase::MMI.

◆ endFunctionImpl()

void CodeViewDebug::endFunctionImpl ( const MachineFunction *  MF)
overrideprotectedvirtual

Gather post-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 3004 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), get, llvm::LexicalScopes::getCurrentFunctionScope(), llvm::MachineFunction::getFunction(), llvm::AsmPrinter::getFunctionEnd(), llvm::DebugHandlerBase::getLabelAfterInsn(), llvm::DebugHandlerBase::getLabelBeforeInsn(), llvm::Function::getSubprogram(), llvm::DebugHandlerBase::LScopes, MBB, and MI.

◆ endModule()

void CodeViewDebug::endModule ( )
overridevirtual

Emit the COFF section that holds the line table information.

Implements llvm::AsmPrinterHandler.

Definition at line 633 of file CodeViewDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::MachineModuleInfo::hasDebugInfo(), and llvm::DebugHandlerBase::MMI.

◆ moduleIsInFortran()

bool llvm::CodeViewDebug::moduleIsInFortran ( )
inlineprotected

Check if the current module is in Fortran.

Definition at line 485 of file CodeViewDebug.h.

References llvm::codeview::Fortran.

◆ setSymbolSize()

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

For symbols that have a size designated (e.g.

common symbols), this tracks that size.

Implements llvm::AsmPrinterHandler.

Definition at line 494 of file CodeViewDebug.h.

The documentation for this class was generated from the following files:
Generated on Sun May 22 2022 08:16:35 for LLVM by   doxygen 1.8.17