llvm::StackMaps Class Reference

#include <StackMaps.h>

Classes
struct	Location

Public Types
enum	OpType { DirectMemRefOp, IndirectMemRefOp, ConstantOp }
typedef std::pair< Location, MachineInstr::const_mop_iterator >(*	OperandParser )(MachineInstr::const_mop_iterator, MachineInstr::const_mop_iterator, const TargetMachine &)

Public Member Functions
	StackMaps (AsmPrinter &AP, OperandParser OpParser)
void	recordStackMap (const MachineInstr &MI)
	Generate a stackmap record for a stackmap instruction. More...
void	recordPatchPoint (const MachineInstr &MI)
	Generate a stackmap record for a patchpoint instruction. More...
void	serializeToStackMapSection ()

Detailed Description

Definition at line 81 of file StackMaps.h.

Member Typedef Documentation

typedef std::pair<Location, MachineInstr::const_mop_iterator>(* llvm::StackMaps::OperandParser)(MachineInstr::const_mop_iterator, MachineInstr::const_mop_iterator, const TargetMachine &)

Definition at line 98 of file StackMaps.h.

Member Enumeration Documentation

enum llvm::StackMaps::OpType

Enumerator
DirectMemRefOp
IndirectMemRefOp
ConstantOp

Definition at line 104 of file StackMaps.h.

Constructor & Destructor Documentation

llvm::StackMaps::StackMaps ( AsmPrinter &  AP, OperandParser  OpParser  )

inline

Definition at line 106 of file StackMaps.h.

Member Function Documentation

void StackMaps::recordPatchPoint

(

const MachineInstr &

MI

)

Generate a stackmap record for a patchpoint instruction.

Definition at line 133 of file StackMaps.cpp.

References llvm::MachineInstr::getOpcode(), getStackMapEndMOP(), llvm::PatchPointOpers::IDPos, llvm::PatchPointOpers::NArgPos, llvm::next(), llvm::MachineInstr::operands_begin(), llvm::MachineInstr::operands_end(), llvm::TargetOpcode::PATCHPOINT, and llvm::StackMaps::Location::Register.

Referenced by LowerPATCHPOINT().

void StackMaps::recordStackMap

(

const MachineInstr &

MI

)

Generate a stackmap record for a stackmap instruction.

MI must be a raw STACKMAP, not a PATCHPOINT.

Definition at line 123 of file StackMaps.cpp.

References llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), getStackMapEndMOP(), llvm::next(), llvm::MachineInstr::operands_begin(), llvm::MachineInstr::operands_end(), and llvm::TargetOpcode::STACKMAP.

Referenced by LowerSTACKMAP().

void StackMaps::serializeToStackMapSection

(

)

If there is any stack map data, create a stack map section and serialize the map info into it. This clears the stack map data structures afterwards.

serializeToStackMapSection conceptually populates the following fields:

uint32 : Reserved (header) uint32 : NumConstants int64 : Constants[NumConstants] uint32 : NumRecords StkMapRecord[NumRecords] { uint32 : PatchPoint ID uint32 : Instruction Offset uint16 : Reserved (record flags) uint16 : NumLocations Location[NumLocations] { uint8 : Register | Direct | Indirect | Constant | ConstantIndex uint8 : Size in Bytes uint16 : Dwarf RegNum int32 : Offset } }

Location Encoding, Type, Value: 0x1, Register, Reg (value in register) 0x2, Direct, Reg + Offset (frame index) 0x3, Indirect, [Reg + Offset] (spilled value) 0x4, Constant, Offset (small constant) 0x5, ConstIndex, Constants[Offset] (large constant)

Definition at line 182 of file StackMaps.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::StackMaps::Location::Constant, llvm::StackMaps::Location::ConstantIndex, llvm::dbgs(), DEBUG, llvm::StackMaps::Location::Direct, llvm::MCStreamer::EmitIntValue(), llvm::MCStreamer::EmitLabel(), llvm::MCStreamer::EmitValue(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::MCStreamer::getContext(), llvm::MCRegisterInfo::getDwarfRegNum(), llvm::MCRegisterInfo::getLLVMRegNum(), llvm::MCRegisterInfo::getName(), llvm::MCContext::getObjectFileInfo(), llvm::MCContext::GetOrCreateSymbol(), llvm::TargetMachine::getRegisterInfo(), llvm::MCContext::getRegisterInfo(), llvm::MCObjectFileInfo::getStackMapSection(), llvm::MCRegisterInfo::getSubRegIdxOffset(), llvm::MCRegisterInfo::getSubRegIndex(), llvm::StackMaps::Location::Indirect, llvm::MCRegisterInfo::DiffListIterator::isValid(), llvm::StackMaps::Location::LocType, llvm::StackMaps::Location::Offset, llvm::AsmPrinter::OutStreamer, llvm::StackMaps::Location::Reg, llvm::StackMaps::Location::Register, llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::MCStreamer::SwitchSection(), llvm::AsmPrinter::TM, and llvm::StackMaps::Location::Unprocessed.

Referenced by llvm::X86AsmPrinter::EmitEndOfAsmFile().

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

• StackMaps.h
• StackMaps.cpp