class RegisterBank

Declaration

class RegisterBank { /* full declaration omitted */ };

Description

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

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:28

Member Variables

private unsigned int ID

private const char* Name

private unsigned int Size

private llvm::BitVector ContainedRegClasses

private static const unsigned int InvalidID

Sentinel value used to recognize register bank not properly initialized yet.

Method Overview

• public RegisterBank(unsigned int ID, const char * Name, unsigned int Size, const uint32_t * CoveredClasses, unsigned int NumRegClasses)
• public bool covers(const llvm::TargetRegisterClass & RC) const
• public void dump(const llvm::TargetRegisterInfo * TRI = nullptr) const
• public unsigned int getID() const
• public const char * getName() const
• public unsigned int getSize() const
• public bool isValid() const
• public void print(llvm::raw_ostream & OS, bool IsForDebug = false, const llvm::TargetRegisterInfo * TRI = nullptr) const
• public bool verify(const llvm::TargetRegisterInfo & TRI) const

Methods

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

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:43

Parameters

unsigned int ID

const char* Name

unsigned int Size

const uint32_t* CoveredClasses

unsigned int NumRegClasses

¶bool covers(
    const llvm::TargetRegisterClass& RC) const

Description

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

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:71

Parameters

const llvm::TargetRegisterClass& RC

¶void dump(const llvm::TargetRegisterInfo* TRI =
              nullptr) const

Description

Dump the register mask on dbgs() stream. The dump is verbose.

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:81

Parameters

const llvm::TargetRegisterInfo* TRI = nullptr

¶unsigned int getID() const

Description

Get the identifier of this register bank.

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:47

¶const char* getName() const

Description

Get a user friendly name of this register bank. Should be used only for debugging purposes.

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:51

¶unsigned int getSize() const

Description

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

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:54

¶bool isValid() const

Description

Check whether this instance is ready to be used.

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:57

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

Description

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.

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:88

Parameters

llvm::raw_ostream& OS

bool IsForDebug = false

const llvm::TargetRegisterInfo* TRI = nullptr

¶bool verify(
    const llvm::TargetRegisterInfo& TRI) const

Description

Check if this register bank is valid. In other words, if it has been properly constructed.

Declared at: llvm/include/llvm/CodeGen/RegisterBank.h:65

Parameters

const llvm::TargetRegisterInfo& TRI

Returns

True is the check was successful.