A reference-counted handle to a parameter to a halide pipeline. More...

#include <Parameter.h>

Public Member Functions
	Parameter ()=default
	Construct a new undefined handle. More...

	Parameter (const Type &t, bool is_buffer, int dimensions)
	Construct a new parameter of the given type. More...

	Parameter (const Type &t, bool is_buffer, int dimensions, const std::string &name)
	Construct a new parameter of the given type with name given by the third argument. More...

	Parameter (const Parameter &)=default

Parameter &	operator= (const Parameter &)=default

	Parameter (Parameter &&)=default

Parameter &	operator= (Parameter &&)=default

Type	type () const
	Get the type of this parameter. More...

int	dimensions () const
	Get the dimensionality of this parameter. More...

const std::string &	name () const
	Get the name of this parameter. More...

bool	is_buffer () const
	Does this parameter refer to a buffer/image? More...

template<typename T >
HALIDE_NO_USER_CODE_INLINE T	scalar () const
	If the parameter is a scalar parameter, get its currently bound value. More...

Expr	scalar_expr () const
	This returns the current value of scalar<type()>() as an Expr. More...

template<typename T >
HALIDE_NO_USER_CODE_INLINE void	set_scalar (T val)
	If the parameter is a scalar parameter, set its current value. More...

HALIDE_NO_USER_CODE_INLINE void	set_scalar (const Type &val_type, halide_scalar_value_t val)
	If the parameter is a scalar parameter, set its current value. More...

Buffer< void >	buffer () const
	If the parameter is a buffer parameter, get its currently bound buffer. More...

const halide_buffer_t *	raw_buffer () const
	Get the raw currently-bound buffer. More...

void	set_buffer (const Buffer< void > &b)
	If the parameter is a buffer parameter, set its current value. More...

void *	scalar_address () const
	Get the pointer to the current value of the scalar parameter. More...

bool	same_as (const Parameter &other) const
	Tests if this handle is the same as another handle. More...

bool	defined () const
	Tests if this handle is non-nullptr. More...

void	set_min_constraint (int dim, Expr e)
	Get and set constraints for the min, extent, stride, and estimates on the min/extent. More...

void	set_extent_constraint (int dim, Expr e)

void	set_stride_constraint (int dim, Expr e)

void	set_min_constraint_estimate (int dim, Expr min)

void	set_extent_constraint_estimate (int dim, Expr extent)

void	set_host_alignment (int bytes)

Expr	min_constraint (int dim) const

Expr	extent_constraint (int dim) const

Expr	stride_constraint (int dim) const

Expr	min_constraint_estimate (int dim) const

Expr	extent_constraint_estimate (int dim) const

int	host_alignment () const

void	set_min_value (const Expr &e)
	Get and set constraints for scalar parameters. More...

Expr	min_value () const

void	set_max_value (const Expr &e)

Expr	max_value () const

void	set_estimate (Expr e)

Expr	estimate () const

void	set_default_value (const Expr &e)
	Get and set the default values for scalar parameters. More...

Expr	default_value () const

bool	operator< (const Parameter &other) const
	Order Parameters by their IntrusivePtr so they can be used to index maps. More...

ArgumentEstimates	get_argument_estimates () const
	Get the ArgumentEstimates appropriate for this Parameter. More...

void	store_in (MemoryType memory_type)

MemoryType	memory_type () const

Protected Attributes
IntrusivePtr< ParameterContents >	contents

Detailed Description

A reference-counted handle to a parameter to a halide pipeline.

May be a scalar parameter or a buffer

Definition at line 28 of file Parameter.h.

Constructor & Destructor Documentation

◆ Parameter() [1/5]

Halide::Internal::Parameter::Parameter ( )

default

Construct a new undefined handle.

◆ Parameter() [2/5]

Halide::Internal::Parameter::Parameter	(	const Type &	t,
		bool	is_buffer,
		int	dimensions
	)

Construct a new parameter of the given type.

If the second argument is true, this is a buffer parameter of the given dimensionality, otherwise, it is a scalar parameter (and the dimensionality should be zero). The parameter will be given a unique auto-generated name.

◆ Parameter() [3/5]

Halide::Internal::Parameter::Parameter	(	const Type &	t,
		bool	is_buffer,
		int	dimensions,
		const std::string &	name
	)

Construct a new parameter of the given type with name given by the third argument.

If the second argument is true, this is a buffer parameter, otherwise, it is a scalar parameter. The third argument gives the dimensionality of the buffer parameter. It should be zero for scalar parameters. If the fifth argument is true, the the name being passed in was explicitly specified (as opposed to autogenerated).

◆ Parameter() [4/5]

Halide::Internal::Parameter::Parameter ( const Parameter & )

default

◆ Parameter() [5/5]

Halide::Internal::Parameter::Parameter ( Parameter && )

default

Member Function Documentation

◆ operator=() [1/2]

Parameter& Halide::Internal::Parameter::operator= ( const Parameter & )

default

◆ operator=() [2/2]

Parameter& Halide::Internal::Parameter::operator= ( Parameter && )

default

◆ type()

Type Halide::Internal::Parameter::type ( ) const

Get the type of this parameter.

Referenced by Halide::Internal::Call::make(), Halide::Param< T >::operator Expr(), Halide::Param< T >::set(), Halide::Param< T >::set_estimate(), Halide::Param< T >::set_max_value(), Halide::Param< T >::set_min_value(), and Halide::Param< T >::type().

◆ dimensions()

int Halide::Internal::Parameter::dimensions ( ) const

Get the dimensionality of this parameter.

Zero for scalars.

◆ name()

const std::string& Halide::Internal::Parameter::name ( ) const

Get the name of this parameter.

Referenced by Halide::Internal::Call::make(), and Halide::Param< T >::name().

◆ is_buffer()

bool Halide::Internal::Parameter::is_buffer ( ) const

Does this parameter refer to a buffer/image?

Referenced by Halide::ExternFuncArgument::ExternFuncArgument().

◆ scalar()

template<typename T >

HALIDE_NO_USER_CODE_INLINE T Halide::Internal::Parameter::scalar ( ) const

inline

If the parameter is a scalar parameter, get its currently bound value.

Only relevant when jitting

Definition at line 78 of file Parameter.h.

References scalar_address().

Referenced by Halide::Param< T >::get().

◆ scalar_expr()

Expr Halide::Internal::Parameter::scalar_expr ( ) const

This returns the current value of scalar<type()>() as an Expr.

◆ set_scalar() [1/2]

template<typename T >

HALIDE_NO_USER_CODE_INLINE void Halide::Internal::Parameter::set_scalar ( T val )

inline

If the parameter is a scalar parameter, set its current value.

Only relevant when jitting

Definition at line 90 of file Parameter.h.

References scalar_address().

Referenced by Halide::Param< T >::set(), and Halide::Internal::GeneratorInput_Scalar< T >::set_def_min_max().

◆ set_scalar() [2/2]

HALIDE_NO_USER_CODE_INLINE void Halide::Internal::Parameter::set_scalar	(	const Type &	val_type,
		halide_scalar_value_t	val
	)

inline

If the parameter is a scalar parameter, set its current value.

Only relevant when jitting

Definition at line 97 of file Parameter.h.

References Halide::Type::bytes(), memcpy(), and scalar_address().

◆ buffer()

Buffer<void> Halide::Internal::Parameter::buffer ( ) const

If the parameter is a buffer parameter, get its currently bound buffer.

Only relevant when jitting

◆ raw_buffer()

const halide_buffer_t* Halide::Internal::Parameter::raw_buffer ( ) const

Get the raw currently-bound buffer.

null if unbound

◆ set_buffer()

void Halide::Internal::Parameter::set_buffer ( const Buffer< void > & b )

If the parameter is a buffer parameter, set its current value.

Only relevant when jitting

◆ scalar_address()

void* Halide::Internal::Parameter::scalar_address ( ) const

Get the pointer to the current value of the scalar parameter.

For a given parameter, this address will never change. Only relevant when jitting.

Referenced by scalar(), and set_scalar().

◆ same_as()

bool Halide::Internal::Parameter::same_as ( const Parameter & other ) const

Tests if this handle is the same as another handle.

◆ defined()

bool Halide::Internal::Parameter::defined ( ) const

Tests if this handle is non-nullptr.

◆ set_min_constraint()

void Halide::Internal::Parameter::set_min_constraint	(	int	dim,
		Expr	e
	)

Get and set constraints for the min, extent, stride, and estimates on the min/extent.

◆ set_extent_constraint()

void Halide::Internal::Parameter::set_extent_constraint	(	int	dim,
		Expr	e
	)

◆ set_stride_constraint()

void Halide::Internal::Parameter::set_stride_constraint	(	int	dim,
		Expr	e
	)

◆ set_min_constraint_estimate()

void Halide::Internal::Parameter::set_min_constraint_estimate	(	int	dim,
		Expr	min
	)

◆ set_extent_constraint_estimate()

void Halide::Internal::Parameter::set_extent_constraint_estimate	(	int	dim,
		Expr	extent
	)

◆ set_host_alignment()

void Halide::Internal::Parameter::set_host_alignment ( int bytes )

◆ min_constraint()

Expr Halide::Internal::Parameter::min_constraint ( int dim ) const

◆ extent_constraint()

Expr Halide::Internal::Parameter::extent_constraint ( int dim ) const

◆ stride_constraint()

Expr Halide::Internal::Parameter::stride_constraint ( int dim ) const

◆ min_constraint_estimate()

Expr Halide::Internal::Parameter::min_constraint_estimate ( int dim ) const

◆ extent_constraint_estimate()

Expr Halide::Internal::Parameter::extent_constraint_estimate ( int dim ) const

◆ host_alignment()

int Halide::Internal::Parameter::host_alignment ( ) const

◆ set_min_value()

void Halide::Internal::Parameter::set_min_value ( const Expr & e )

Get and set constraints for scalar parameters.

These are used directly by Param, so they must be exported.

Referenced by Halide::Internal::GeneratorInput_Arithmetic< T >::set_def_min_max(), and Halide::Param< T >::set_min_value().

◆ min_value()

Expr Halide::Internal::Parameter::min_value ( ) const

Referenced by Halide::Param< T >::min_value().

◆ set_max_value()

void Halide::Internal::Parameter::set_max_value ( const Expr & e )

Referenced by Halide::Internal::GeneratorInput_Arithmetic< T >::set_def_min_max(), and Halide::Param< T >::set_max_value().

◆ max_value()

Expr Halide::Internal::Parameter::max_value ( ) const

Referenced by Halide::Param< T >::max_value().

◆ set_estimate()

void Halide::Internal::Parameter::set_estimate ( Expr e )

Referenced by Halide::Param< T >::set_estimate(), Halide::Internal::GeneratorInput_DynamicScalar< T >::set_estimate(), and Halide::Internal::GeneratorInput_Scalar< T >::set_estimate().

◆ estimate()

Expr Halide::Internal::Parameter::estimate ( ) const

◆ set_default_value()

void Halide::Internal::Parameter::set_default_value ( const Expr & e )

Get and set the default values for scalar parameters.

At present, these are used only to emit the default values in the metadata. There isn't yet a public API in Param<> for them (this is used internally by the Generator code).

Referenced by Halide::Internal::GeneratorInput_Scalar< T >::set_def_min_max().

◆ default_value()

Expr Halide::Internal::Parameter::default_value ( ) const

◆ operator<()

bool Halide::Internal::Parameter::operator< ( const Parameter & other ) const

inline

Order Parameters by their IntrusivePtr so they can be used to index maps.

Definition at line 163 of file Parameter.h.

References contents.

◆ get_argument_estimates()

ArgumentEstimates Halide::Internal::Parameter::get_argument_estimates ( ) const

Get the ArgumentEstimates appropriate for this Parameter.

Referenced by Halide::Param< T >::operator Argument().

◆ store_in()

void Halide::Internal::Parameter::store_in ( MemoryType memory_type )

◆ memory_type()

MemoryType Halide::Internal::Parameter::memory_type ( ) const

Member Data Documentation

◆ contents

IntrusivePtr<ParameterContents> Halide::Internal::Parameter::contents

protected

Definition at line 36 of file Parameter.h.

Referenced by operator<().

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

src/Parameter.h

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Parameter() [1/5]

◆ Parameter() [2/5]

◆ Parameter() [3/5]

◆ Parameter() [4/5]

◆ Parameter() [5/5]

Member Function Documentation

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ type()

◆ dimensions()

◆ name()

◆ is_buffer()

◆ scalar()

◆ scalar_expr()

◆ set_scalar() [1/2]

◆ set_scalar() [2/2]

◆ buffer()

◆ raw_buffer()

◆ set_buffer()

◆ scalar_address()

◆ same_as()

◆ defined()

◆ set_min_constraint()

◆ set_extent_constraint()

◆ set_stride_constraint()

◆ set_min_constraint_estimate()

◆ set_extent_constraint_estimate()

◆ set_host_alignment()

◆ min_constraint()

◆ extent_constraint()

◆ stride_constraint()

◆ min_constraint_estimate()

◆ extent_constraint_estimate()

◆ host_alignment()

◆ set_min_value()

◆ min_value()

◆ set_max_value()

◆ max_value()

◆ set_estimate()

◆ estimate()

◆ set_default_value()

◆ default_value()

◆ operator<()

◆ get_argument_estimates()

◆ store_in()

◆ memory_type()

Member Data Documentation

◆ contents