asmjit::RegOnly Struct Reference

RegOnly is 8-byte version of BaseReg that allows to store either register or nothing.

It's designed to decrease the space consumed by an extra "operand" in BaseEmitter and InstNode.

Public Members

Signature _signature

uint32_t _id

Public Types

Types

typedef OperandSignature Signature

Member Functions

Construction & Destruction

void init(const OperandSignature& signature, uint32_t id) noexcept

void init(const BaseReg& reg) noexcept

void init(const RegOnly& reg) noexcept

void reset() noexcept

Accessors

constexpr bool isNone() const noexcept

constexpr bool isReg() const noexcept

constexpr bool isPhysReg() const noexcept

constexpr bool isVirtReg() const noexcept

constexpr OperandSignature signature() const noexcept

constexpr uint32_t id() const noexcept

void setId(uint32_t id) noexcept

constexpr RegType type() const noexcept

constexpr RegGroup group() const noexcept

Utilities

template<typename RegT>

constexpr RegT toReg() const noexcept

Member Function Documentation

void RegOnly::init(const OperandSignature& signature, uint32_t id)noexcept

Initializes the RegOnly instance to hold register signature and id.

void RegOnly::reset()noexcept

Resets the RegOnly members to zeros (none).

bool RegOnly::isNone() constconstexprnoexcept

Tests whether this ExtraReg is none (same as calling Operand_::isNone()).

bool RegOnly::isReg() constconstexprnoexcept

Tests whether the register is valid (either virtual or physical).

bool RegOnly::isPhysReg() constconstexprnoexcept

Tests whether this is a physical register.

bool RegOnly::isVirtReg() constconstexprnoexcept

Tests whether this is a virtual register (used by BaseCompiler).

OperandSignature RegOnly::signature() constconstexprnoexcept

Returns the register signature or 0 if no register is assigned.

uint32_t RegOnly::id() constconstexprnoexcept

Returns the register id.

Note

Always check whether the register is assigned before using the returned identifier as non-assigned RegOnly instance would return zero id, which is still a valid register id.

void RegOnly::setId(uint32_t id)noexcept

Sets the register id.

RegType RegOnly::type() constconstexprnoexcept

Returns the register type.

RegGroup RegOnly::group() constconstexprnoexcept

Returns the register group.

template<typename RegT>

RegT RegOnly::toReg() constconstexprnoexcept

Converts this ExtraReg to a real RegT operand.

Member Data Documentation

Signature RegOnly::_signature

Operand signature - only OperandType::kNone and OperandType::kReg are supported.

uint32_t RegOnly::_id

Physical or virtual register id.