llvm::Bitfield Struct Reference

Holds functions to get, set or test bitfields. More...

#include "llvm/ADT/Bitfields.h"

Classes
struct	Element
	Describes an element of a Bitfield. More...

Static Public Member Functions
template<typename Bitfield, typename StorageType>
static Bitfield::Type	get (StorageType Packed)
	Unpacks the field from the Packed value.
template<typename Bitfield, typename StorageType>
static StorageType	test (StorageType Packed)
	Return a non-zero value if the field is non-zero.
template<typename Bitfield, typename StorageType>
static void	set (StorageType &Packed, typename Bitfield::Type Value)
	Sets the typed value in the provided Packed value.
template<typename A, typename B>
static constexpr bool	isOverlapping ()
	Returns whether the two bitfields share common bits.
template<typename A>
static constexpr bool	areContiguous ()
template<typename A, typename B, typename... Others>
static constexpr bool	areContiguous ()

Detailed Description

Holds functions to get, set or test bitfields.

Definition at line 212 of file Bitfields.h.

Member Function Documentation

areContiguous() [1/2]

template<typename A>

constexpr bool llvm::Bitfield::areContiguous ( )

inlinestaticconstexpr

Definition at line 280 of file Bitfields.h.

Referenced by areContiguous().

areContiguous() [2/2]

template<typename A, typename B, typename... Others>

constexpr bool llvm::Bitfield::areContiguous ( )

inlinestaticconstexpr

Definition at line 282 of file Bitfields.h.

References areContiguous(), and B().

get()

template<typename Bitfield, typename StorageType>

Bitfield::Type llvm::Bitfield::get ( StorageType Packed )

inlinestatic

Unpacks the field from the Packed value.

Definition at line 254 of file Bitfields.h.

References I.

Referenced by llvm::sys::detail::getHostCPUNameForARM(), llvm::InlineAsm::Flag::getKind(), llvm::InlineAsm::Flag::getMemoryConstraintID(), llvm::InlineAsm::Flag::getNumOperandRegisters(), llvm::InlineAsm::Flag::getRegMayBeFolded(), and llvm::Instruction::getSubclassData().

isOverlapping()

template<typename A, typename B>

constexpr bool llvm::Bitfield::isOverlapping ( )

inlinestaticconstexpr

Returns whether the two bitfields share common bits.

Definition at line 276 of file Bitfields.h.

Referenced by llvm::Instruction::getSubclassData(), and llvm::Instruction::setSubclassData().

set()

template<typename Bitfield, typename StorageType>

void llvm::Bitfield::set ( StorageType & Packed, typename Bitfield::Type Value )

inlinestatic

Sets the typed value in the provided Packed value.

The method will asserts if the provided value is too big to fit in.

Definition at line 270 of file Bitfields.h.

References I.

Referenced by llvm::InlineAsm::Flag::clearMemConstraint(), llvm::InlineAsm::Flag::Flag(), llvm::InlineAsm::Flag::setMatchingOp(), llvm::InlineAsm::Flag::setMemConstraint(), llvm::InlineAsm::Flag::setRegClass(), llvm::InlineAsm::Flag::setRegMayBeFolded(), and llvm::Instruction::setSubclassData().

test()

template<typename Bitfield, typename StorageType>

StorageType llvm::Bitfield::test ( StorageType Packed )

inlinestatic

Return a non-zero value if the field is non-zero.

It is more efficient than getField.

Definition at line 262 of file Bitfields.h.

References I.

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The documentation for this struct was generated from the following file:

• include/llvm/ADT/Bitfields.h