#include <Attributes.h>

Inheritance diagram for mlir::SparseElementsAttr:

Collaboration diagram for mlir::SparseElementsAttr:

Public Types
template<typename T >
using	iterator = llvm::mapped_iterator< llvm::detail::value_sequence_iterator< ptrdiff_t >, std::function< T(ptrdiff_t)> >

Public Types inherited from mlir::detail::StorageUserBase< ConcreteT, BaseT, StorageT, UniquerT >
using	Base = StorageUserBase< ConcreteT, BaseT, StorageT, UniquerT >
	Utility declarations for the concrete attribute class. More...

using	ImplType = StorageT

Public Member Functions
DenseIntElementsAttr	getIndices () const

DenseElementsAttr	getValues () const

template<typename T >
llvm::iterator_range< iterator< T > >	getValues () const

Attribute	getValue (ArrayRef< uint64_t > index) const
	Return the value of the element at the given index. More...

Static Public Member Functions
static SparseElementsAttr	get (ShapedType type, DenseElementsAttr indices, DenseElementsAttr values)
	'type' must be a vector or tensor with static shape. More...

static bool	kindof (unsigned kind)
	Method for support type inquiry through isa, cast and dyn_cast. More...

Static Public Member Functions inherited from mlir::detail::StorageUserBase< ConcreteT, BaseT, StorageT, UniquerT >
static ClassID *	getClassID ()
	Return a unique identifier for the concrete type. More...

template<typename T >
static bool	classof (T val)

Additional Inherited Members
Protected Member Functions inherited from mlir::detail::StorageUserBase< ConcreteT, BaseT, StorageT, UniquerT >
ImplType *	getImpl () const
	Utility for easy access to the storage instance. More...

Static Protected Member Functions inherited from mlir::detail::StorageUserBase< ConcreteT, BaseT, StorageT, UniquerT >
template<typename... Args>
static ConcreteT	get (MLIRContext *ctx, unsigned kind, Args... args)

template<typename... Args>
static ConcreteT	getChecked (const Location &loc, MLIRContext *ctx, unsigned kind, Args... args)

template<typename... Args>
static LogicalResult	verifyConstructionInvariants (Args... args)
	Default implementation that just returns success. More...

Detailed Description

An attribute that represents a reference to a sparse vector or tensor object.

This class uses COO (coordinate list) encoding to represent the sparse elements in an element attribute. Specifically, the sparse vector/tensor stores the indices and values as two separate dense elements attributes of tensor type (even if the sparse attribute is of vector type, in order to support empty lists). The dense elements attribute indices is a 2-D tensor of 64-bit integer elements with shape [N, ndims], which specifies the indices of the elements in the sparse tensor that contains nonzero values. The dense elements attribute values is a 1-D tensor with shape [N], and it supplies the corresponding values for the indices.

For example, sparse<tensor<3x4xi32>, [[0, 0], [1, 2]], [1, 5]> represents tensor [[1, 0, 0, 0], [0, 0, 5, 0], [0, 0, 0, 0]].

Member Typedef Documentation

◆ iterator

template<typename T >

using mlir::SparseElementsAttr::iterator = llvm::mapped_iterator<llvm::detail::value_sequence_iterator<ptrdiff_t>, std::function<T(ptrdiff_t)> >

Member Function Documentation

◆ get()

SparseElementsAttr SparseElementsAttr::get	(	ShapedType	type,
		DenseElementsAttr	indices,
		DenseElementsAttr	values
	)

static

'type' must be a vector or tensor with static shape.

◆ getIndices()

DenseIntElementsAttr SparseElementsAttr::getIndices ( ) const

◆ getValue()

Attribute SparseElementsAttr::getValue ( ArrayRef< uint64_t > index ) const

Return the value of the element at the given index.

Return the value of the element at the given index. The 'index' is expected to refer to a valid element.

◆ getValues() [1/2]

DenseElementsAttr SparseElementsAttr::getValues ( ) const

◆ getValues() [2/2]

template<typename T >

llvm::iterator_range<iterator<T> > mlir::SparseElementsAttr::getValues ( ) const

inline

Return the values of this attribute in the form of the given type 'T'. 'T' may be any of Attribute, APInt, APFloat, c++ integer/float types, etc.

◆ kindof()

static bool mlir::SparseElementsAttr::kindof ( unsigned kind )

inlinestatic

Method for support type inquiry through isa, cast and dyn_cast.

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

include/mlir/IR/Attributes.h
lib/IR/Attributes.cpp

Public Types

Public Member Functions

Static Public Member Functions

Additional Inherited Members