llvm::RegisterBank Class Reference

This class implements the register bank concept. More...

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

Public Member Functions
	RegisterBank (unsigned ID, const char *Name, unsigned Size, const uint32_t *CoveredClasses, unsigned NumRegClasses)
unsigned	getID () const
	Get the identifier of this register bank. More...
const char *	getName () const
	Get a user friendly name of this register bank. More...
unsigned	getSize () const
	Get the maximal size in bits that fits in this register bank. More...
bool	isValid () const
	Check whether this instance is ready to be used. More...
bool	verify (const TargetRegisterInfo &TRI) const
	Check if this register bank is valid. More...
bool	covers (const TargetRegisterClass &RC) const
	Check whether this register bank covers RC. More...
bool	operator== (const RegisterBank &OtherRB) const
	Check whether OtherRB is the same as this. More...
bool	operator!= (const RegisterBank &OtherRB) const
void	dump (const TargetRegisterInfo *TRI=nullptr) const
	Dump the register mask on dbgs() stream. More...
void	print (raw_ostream &OS, bool IsForDebug=false, const TargetRegisterInfo *TRI=nullptr) const
	Print the register mask on OS. More...

Detailed Description

This class implements the register bank concept.

Two instances of RegisterBank must have different ID. This property is enforced by the RegisterBankInfo class.

Definition at line 29 of file RegisterBank.h.

Constructor & Destructor Documentation

RegisterBank()

RegisterBank::RegisterBank	(	unsigned	ID,
		const char *	Name,
		unsigned	Size,
		const uint32_t *	CoveredClasses,
		unsigned	NumRegClasses
	)

Definition at line 23 of file RegisterBank.cpp.

References llvm::BitVector::resize(), and llvm::BitVector::setBitsInMask().

Member Function Documentation

covers()

bool RegisterBank::covers

(

const TargetRegisterClass &

RC

)

const

Check whether this register bank covers RC.

In other words, check if this register bank fully covers the registers that RC contains.

Precondition

isValid()

Definition at line 60 of file RegisterBank.cpp.

References assert(), llvm::TargetRegisterClass::getID(), isValid(), and llvm::BitVector::test().

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo(), llvm::ARMRegisterBankInfo::ARMRegisterBankInfo(), llvm::RegisterBankInfo::constrainGenericRegister(), llvm::RegisterBankInfo::getRegBankFromConstraints(), getSize(), and llvm::X86RegisterBankInfo::X86RegisterBankInfo().

dump()

LLVM_DUMP_METHOD void RegisterBank::dump

(

const TargetRegisterInfo *

TRI = nullptr

)

const

Dump the register mask on dbgs() stream.

The dump is verbose.

Definition at line 81 of file RegisterBank.cpp.

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

Referenced by operator!=().

getID()

unsigned llvm::RegisterBank::getID ( ) const

inline

Get the identifier of this register bank.

Definition at line 48 of file RegisterBank.h.

Referenced by buildEXP(), canTurnIntoCOPY(), changeFCMPPredToAArch64CC(), llvm::AMDGPURegisterBankInfo::copyCost(), llvm::SIRegisterInfo::getConstrainedRegClassForOperand(), llvm::AArch64RegisterBankInfo::getInstrMapping(), getRegClassFromGRPhysReg(), hashPartialMapping(), isConstant(), isInstrUniform(), operator==(), print(), selectCopy(), selectMergeValues(), and selectUnmergeValues().

getName()

const char* llvm::RegisterBank::getName ( ) const

inline

Get a user friendly name of this register bank.

Should be used only for debugging purposes.

Definition at line 52 of file RegisterBank.h.

Referenced by matchPair(), print(), and llvm::printRegClassOrBank().

getSize()

unsigned llvm::RegisterBank::getSize ( ) const

inline

Get the maximal size in bits that fits in this register bank.

Definition at line 55 of file RegisterBank.h.

References covers(), isValid(), operator==(), TRI, and verify().

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo(), llvm::ARMRegisterBankInfo::ARMRegisterBankInfo(), matchPair(), print(), and llvm::X86RegisterBankInfo::X86RegisterBankInfo().

isValid()

bool RegisterBank::isValid

(

)

const

Check whether this instance is ready to be used.

Definition at line 65 of file RegisterBank.cpp.

References llvm::BitVector::empty().

Referenced by covers(), getSize(), print(), and verify().

operator!=()

bool llvm::RegisterBank::operator!= ( const RegisterBank &  OtherRB ) const

inline

Definition at line 76 of file RegisterBank.h.

References dump(), operator==(), and print().

operator==()

bool RegisterBank::operator==

(

const RegisterBank &

OtherRB

)

const

Check whether OtherRB is the same as this.

Definition at line 71 of file RegisterBank.cpp.

References assert(), and getID().

Referenced by getSize(), and operator!=().

print()

void RegisterBank::print	(	raw_ostream &	OS,
		bool	IsForDebug = false,
		const TargetRegisterInfo *	TRI = nullptr
	)		const

Print the register mask on OS.

If IsForDebug is false, then only the name of the register bank is printed. Otherwise, all the fields are printing. TRI is then used to print the name of the register classes that this register bank covers.

Definition at line 86 of file RegisterBank.cpp.

References assert(), llvm::BitVector::count(), llvm::BitVector::empty(), getID(), getName(), llvm::TargetRegisterInfo::getNumRegClasses(), getSize(), isValid(), and llvm::BitVector::size().

Referenced by dump(), operator!=(), and llvm::operator<<().

verify()

bool RegisterBank::verify

(

const TargetRegisterInfo &

TRI

)

const

Check if this register bank is valid.

In other words, if it has been properly constructed.

Note

This method does not check anything when assertions are disabled.

Returns

True is the check was successful.

Definition at line 31 of file RegisterBank.cpp.

References assert(), and isValid().

Referenced by getSize().

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

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