llvm::MaybeAlign Struct Reference

This struct is a compact representation of a valid (power of two) or undefined (0) alignment. More...

#include "llvm/Support/Alignment.h"

Inheritance diagram for llvm::MaybeAlign:

Collaboration diagram for llvm::MaybeAlign:

Public Member Functions
	MaybeAlign ()=default
	Default is undefined. More...
	MaybeAlign (const MaybeAlign &Other)=default
	Do not perform checks in case of copy/move construct/assign, because the checks have been performed when building Other. More...
MaybeAlign &	operator= (const MaybeAlign &Other)=default
	MaybeAlign (MaybeAlign &&Other)=default
MaybeAlign &	operator= (MaybeAlign &&Other)=default
	MaybeAlign (uint64_t Value)
Align	valueOrOne () const
	For convenience, returns a valid alignment or 1 if undefined. More...
Public Member Functions inherited from llvm::Optional< Align >
constexpr	Optional ()
constexpr	Optional (NoneType)
constexpr	Optional (const Align &y)
constexpr	Optional (const Optional &O)=default
constexpr	Optional (Align &&y)
constexpr	Optional (Optional &&O)=default
Optional &	operator= (Align &&y)
Optional &	operator= (Optional &&O)=default
Optional &	operator= (const Align &y)
Optional &	operator= (const Optional &O)=default
void	emplace (ArgTypes &&... Args)
	Create a new object by constructing it in place with the given arguments. More...
void	reset ()
constexpr const Align *	getPointer () const
Align *	getPointer ()
constexpr const Align &	getValue () const LLVM_LVALUE_FUNCTION
Align &	getValue () LLVM_LVALUE_FUNCTION
constexpr	operator bool () const
constexpr bool	hasValue () const
constexpr const Align *	operator-> () const
Align *	operator-> ()
constexpr const Align &	operator* () const LLVM_LVALUE_FUNCTION
Align &	operator* () LLVM_LVALUE_FUNCTION
constexpr Align	getValueOr (U &&value) const LLVM_LVALUE_FUNCTION
auto	map (const Function &F) const LLVM_LVALUE_FUNCTION -> Optional< decltype(F(getValue()))>
	Apply a function to the value if present; otherwise return None. More...

Additional Inherited Members
Public Types inherited from llvm::Optional< Align >
using	value_type = Align
Static Public Member Functions inherited from llvm::Optional< Align >
static constexpr Optional	create (const Align *y)

Detailed Description

This struct is a compact representation of a valid (power of two) or undefined (0) alignment.

Definition at line 119 of file Alignment.h.

Constructor & Destructor Documentation

MaybeAlign() [1/4]

llvm::MaybeAlign::MaybeAlign ( )

default

Default is undefined.

MaybeAlign() [2/4]

llvm::MaybeAlign::MaybeAlign ( const MaybeAlign &  Other )

default

Do not perform checks in case of copy/move construct/assign, because the checks have been performed when building Other.

MaybeAlign() [3/4]

llvm::MaybeAlign::MaybeAlign ( MaybeAlign &&  Other )

default

MaybeAlign() [4/4]

llvm::MaybeAlign::MaybeAlign ( uint64_t  Value )

inlineexplicit

Definition at line 136 of file Alignment.h.

References assert(), llvm::Optional< Align >::emplace(), and llvm::isPowerOf2_64().

Member Function Documentation

operator=() [1/2]

MaybeAlign& llvm::MaybeAlign::operator= ( const MaybeAlign &  Other )

default

operator=() [2/2]

MaybeAlign& llvm::MaybeAlign::operator= ( MaybeAlign &&  Other )

default

valueOrOne()

Align llvm::MaybeAlign::valueOrOne ( ) const

inline

For convenience, returns a valid alignment or 1 if undefined.

Definition at line 144 of file Alignment.h.

References Align, llvm::Optional< Align >::getValue(), and llvm::Optional< Align >::hasValue().

Referenced by llvm::expandMemCpyAsLoop(), llvm::expandMemMoveAsLoop(), llvm::expandMemSetAsLoop(), llvm::ConstantInt::getAlignValue(), llvm::HexagonTTIImpl::getMemoryOpCost(), llvm::X86TTIImpl::getMemoryOpCost(), llvm::ISD::ArgFlagsTy::getNonZeroMemAlign(), llvm::ISD::ArgFlagsTy::getNonZeroOrigAlign(), llvm::Value::getPointerAlignment(), hasTocDataAttr(), and llvm::MIRParserImpl::initializeMachineFunction().

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

• include/llvm/Support/Alignment.h