llvm::RegisterBankInfo::InstructionMapping Class Reference

Helper class that represents how the value of an instruction may be mapped and what is the related cost of such mapping. More...

#include "llvm/CodeGen/GlobalISel/RegisterBankInfo.h"

Public Member Functions
	InstructionMapping (unsigned ID, unsigned Cost, const ValueMapping *OperandsMapping, unsigned NumOperands)
	Constructor for the mapping of an instruction. More...
	InstructionMapping ()=default
	Default constructor. More...
unsigned	getCost () const
	Get the cost. More...
unsigned	getID () const
	Get the ID. More...
unsigned	getNumOperands () const
	Get the number of operands. More...
const ValueMapping &	getOperandMapping (unsigned i) const
	Get the value mapping of the ith operand. More...
void	setOperandsMapping (const ValueMapping *OpdsMapping)
	Set the mapping for all the operands. More...
bool	isValid () const
	Check whether this object is valid. More...
bool	verify (const MachineInstr &MI) const
	Verifiy that this mapping makes sense for MI. More...
void	dump () const
	Print this on dbgs() stream. More...
void	print (raw_ostream &OS) const
	Print this on OS;. More...

Detailed Description

Helper class that represents how the value of an instruction may be mapped and what is the related cost of such mapping.

Definition at line 183 of file RegisterBankInfo.h.

Constructor & Destructor Documentation

InstructionMapping() [1/2]

llvm::RegisterBankInfo::InstructionMapping::InstructionMapping ( unsigned  ID, unsigned  Cost, const ValueMapping *  OperandsMapping, unsigned  NumOperands  )

inline

Constructor for the mapping of an instruction.

NumOperands must be equal to number of all the operands of the related instruction. The rationale is that it is more efficient for the optimizers to be able to assume that the mapping of the ith operand is at the index i.

Precondition

ID != InvalidMappingID

Definition at line 212 of file RegisterBankInfo.h.

References assert(), getID(), and llvm::RegisterBankInfo::InvalidMappingID.

InstructionMapping() [2/2]

llvm::RegisterBankInfo::InstructionMapping::InstructionMapping ( )

default

Default constructor.

Use this constructor to express that the mapping is invalid.

Member Function Documentation

dump()

LLVM_DUMP_METHOD void RegisterBankInfo::InstructionMapping::dump

(

)

const

Print this on dbgs() stream.

Definition at line 585 of file RegisterBankInfo.cpp.

References llvm::dbgs(), and print().

getCost()

unsigned llvm::RegisterBankInfo::InstructionMapping::getCost ( ) const

inline

Get the cost.

Definition at line 226 of file RegisterBankInfo.h.

Referenced by llvm::RegBankSelect::getAnalysisUsage().

getID()

unsigned llvm::RegisterBankInfo::InstructionMapping::getID ( ) const

inline

Get the ID.

Definition at line 229 of file RegisterBankInfo.h.

Referenced by llvm::AArch64RegisterBankInfo::getInstrAlternativeMappings(), and llvm::RegisterBankInfo::OperandsMapper::print().

getNumOperands()

unsigned llvm::RegisterBankInfo::InstructionMapping::getNumOperands ( ) const

inline

Get the number of operands.

Definition at line 232 of file RegisterBankInfo.h.

Referenced by llvm::RegisterBankInfo::applyDefaultMapping(), llvm::RegBankSelect::getAnalysisUsage(), llvm::RegisterBankInfo::OperandsMapper::OperandsMapper(), and llvm::RegisterBankInfo::OperandsMapper::print().

getOperandMapping()

const ValueMapping& llvm::RegisterBankInfo::InstructionMapping::getOperandMapping ( unsigned  i ) const

inline

Get the value mapping of the ith operand.

Precondition

The mapping for the ith operand has been set.

The ith operand is a register.

Definition at line 237 of file RegisterBankInfo.h.

isValid()

bool llvm::RegisterBankInfo::InstructionMapping::isValid ( ) const

inline

Check whether this object is valid.

This is a lightweight check for obvious wrong instance.

Definition at line 252 of file RegisterBankInfo.h.

References llvm::RegisterBankInfo::PartialMapping::dump(), getID(), llvm::RegisterBankInfo::InvalidMappingID, MI, llvm::RegisterBankInfo::PartialMapping::print(), and llvm::RegisterBankInfo::PartialMapping::verify().

Referenced by llvm::RegBankSelect::getAnalysisUsage(), llvm::ARMRegisterBankInfo::getInstrMapping(), llvm::MipsRegisterBankInfo::getInstrMapping(), llvm::AMDGPURegisterBankInfo::getInstrMapping(), llvm::X86RegisterBankInfo::getInstrMapping(), llvm::AArch64RegisterBankInfo::getInstrMapping(), and llvm::RegisterBankInfo::getInstrMapping().

print()

void RegisterBankInfo::InstructionMapping::print

(

raw_ostream &

OS

)

const

Print this on OS;.

Definition at line 591 of file RegisterBankInfo.cpp.

References getID().

setOperandsMapping()

void llvm::RegisterBankInfo::InstructionMapping::setOperandsMapping ( const ValueMapping *  OpdsMapping )

inline

Set the mapping for all the operands.

In other words, OpdsMapping should hold at least getNumOperands ValueMapping.

Definition at line 246 of file RegisterBankInfo.h.

verify()

bool RegisterBankInfo::InstructionMapping::verify

(

const MachineInstr &

MI

)

const

Verifiy that this mapping makes sense for MI.

Precondition

MI must be connected to a MachineFunction.

Note

This method does not check anything when assertions are disabled.

Returns

True is the check was successful.

Definition at line 548 of file RegisterBankInfo.cpp.

References assert(), llvm::MachineInstr::getMF(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), isCopyLike(), llvm::MachineOperand::isReg(), and llvm::RegisterBankInfo::ValueMapping::verify().

Referenced by llvm::RegBankSelect::getAnalysisUsage(), and llvm::RegisterBankInfo::OperandsMapper::OperandsMapper().

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

• include/llvm/CodeGen/GlobalISel/RegisterBankInfo.h
• lib/CodeGen/GlobalISel/RegisterBankInfo.cpp