A block is a basic schedule unit in TIR. More...

#include <stmt.h>

Inheritance diagram for tvm::tir::BlockNode:

Collaboration diagram for tvm::tir::BlockNode:

Public Member Functions
void	VisitAttrs (AttrVisitor *v)

bool	SEqualReduce (const BlockNode *other, SEqualReducer equal) const

void	SHashReduce (SHashReducer hash_reduce) const

	TVM_DECLARE_FINAL_OBJECT_INFO (BlockNode, StmtNode)

Public Member Functions inherited from tvm::tir::StmtNode
	StmtNode ()=default

	StmtNode (Span span)

	TVM_OBJECT_ENABLE_SCRIPT_PRINTER ()

	TVM_DECLARE_BASE_OBJECT_INFO (StmtNode, Object)

Public Member Functions inherited from tvm::runtime::Object
uint32_t	type_index () const

std::string	GetTypeKey () const

size_t	GetTypeKeyHash () const

template<typename TargetType >
bool	IsInstance () const

bool	unique () const

	Object ()

	Object (const Object &other)

	Object (Object &&other)

Object &	operator= (const Object &other)

Object &	operator= (Object &&other)

Public Attributes
Array< IterVar >	iter_vars
	The variables of the block. More...

Array< BufferRegion >	reads
	The read buffer regions of the block. More...

Array< BufferRegion >	writes
	The write buffer regions of the block. More...

String	name_hint
	The name_hint of the block. More...

Stmt	body
	The body of the block. More...

Optional< Stmt >	init
	The init statement is executed during the first iteration of reduction loops in a reduction block. The optional init field allows us to represent initialization and reduction update in a single block and transform them collectively. We also provide primitives to decompose the init into a separate block during scheduling. Init field is `NullOpt` if there is no reduction iter_vars. More...

Array< Buffer >	alloc_buffers
	The buffer allocated in the block. More...

Array< MatchBufferRegion >	match_buffers
	The match buffer regions. More...

Map< String, ObjectRef >	annotations
	The annotation of the block. More...

Public Attributes inherited from tvm::tir::StmtNode
Span	span
	Span that points to the original source code. Reserved debug information. More...

Static Public Attributes
static constexpr const char *	_type_key = "tir.Block"

Static Public Attributes inherited from tvm::tir::StmtNode
static constexpr const char *	_type_key = "tir.Stmt"

static constexpr const bool	_type_has_method_sequal_reduce = true

static constexpr const bool	_type_has_method_shash_reduce = true

static constexpr const uint32_t	_type_child_slots = 15

Static Public Attributes inherited from tvm::runtime::Object
static constexpr const char *	_type_key = "runtime.Object"

static constexpr bool	_type_final = false

static constexpr uint32_t	_type_child_slots = 0

static constexpr bool	_type_child_slots_can_overflow = true

static constexpr bool	_type_has_method_visit_attrs = true

static constexpr bool	_type_has_method_sequal_reduce = false

static constexpr bool	_type_has_method_shash_reduce = false

static constexpr uint32_t	_type_index = TypeIndex::kDynamic

Additional Inherited Members
Public Types inherited from tvm::runtime::Object
typedef void(*	FDeleter) (Object *self)
	Object deleter. More...

using	RefCounterType = std::atomic< int32_t >

Static Public Member Functions inherited from tvm::runtime::Object
static std::string	TypeIndex2Key (uint32_t tindex)
	Get the type key of the corresponding index from runtime. More...

static size_t	TypeIndex2KeyHash (uint32_t tindex)
	Get the type key hash of the corresponding index from runtime. More...

static uint32_t	TypeKey2Index (const std::string &key)
	Get the type index of the corresponding key from runtime. More...

static uint32_t	_GetOrAllocRuntimeTypeIndex ()

static uint32_t	RuntimeTypeIndex ()

Protected Member Functions inherited from tvm::runtime::Object
void	IncRef ()
	developer function, increases reference counter. More...

void	DecRef ()
	developer function, decrease reference counter. More...

Static Protected Member Functions inherited from tvm::runtime::Object
static uint32_t	GetOrAllocRuntimeTypeIndex (const std::string &key, uint32_t static_tindex, uint32_t parent_tindex, uint32_t type_child_slots, bool type_child_slots_can_overflow)
	Get the type index using type key. More...

Protected Attributes inherited from tvm::runtime::Object
uint32_t	type_index_ {0}
	Type index(tag) that indicates the type of the object. More...

RefCounterType	ref_counter_ {0}
	The internal reference counter. More...

FDeleter	deleter_ = nullptr
	deleter of this object to enable customized allocation. If the deleter is nullptr, no deletion will be performed. The creator of the object must always set the deleter field properly. More...

Detailed Description

A block is a basic schedule unit in TIR.

Note: Block's body is parameterized by iter vars.
with T.block(name):

v0 = T.axis.S(domain, value0)

v1 = T.axis.R(domain, value1)

...

T.reads([buffer0[start:end, ...], ...])

T.writes([buffer1[start:end, ...], ...])

T.where(predicate)

buffer2 = T.alloc_buffer(shape, dtype)

buffer3 = T.match_buffer(source_buffer[start:end, ...])

T.attr({attr_key: attr_value, ...})

with T.init():

// init body

// body

tvm::topi::shape
Tensor shape(const Tensor &src, DataType dtype, const std::string name="T_shape", const std::string tag=kInjective)
Get the shape of input tensor.
Definition: transform.h:1913

Member Function Documentation

◆ SEqualReduce()

bool tvm::tir::BlockNode::SEqualReduce	(	const BlockNode *	other,
		SEqualReducer	equal
	)		const

inline

◆ SHashReduce()

void tvm::tir::BlockNode::SHashReduce ( SHashReducer hash_reduce ) const

inline

◆ TVM_DECLARE_FINAL_OBJECT_INFO()

tvm::tir::BlockNode::TVM_DECLARE_FINAL_OBJECT_INFO	(	BlockNode	,
		StmtNode
	)

◆ VisitAttrs()

void tvm::tir::BlockNode::VisitAttrs ( AttrVisitor * v )

inline

Member Data Documentation

◆ _type_key

constexpr const char* tvm::tir::BlockNode::_type_key = "tir.Block"

staticconstexpr

◆ alloc_buffers

Array<Buffer> tvm::tir::BlockNode::alloc_buffers

The buffer allocated in the block.

◆ annotations

Map<String, ObjectRef> tvm::tir::BlockNode::annotations

The annotation of the block.

◆ body

Stmt tvm::tir::BlockNode::body

The body of the block.

◆ init

Optional<Stmt> tvm::tir::BlockNode::init

The init statement is executed during the first iteration of reduction loops in a reduction block. The optional init field allows us to represent initialization and reduction update in a single block and transform them collectively. We also provide primitives to decompose the init into a separate block during scheduling. Init field is NullOpt if there is no reduction iter_vars.

◆ iter_vars

Array<IterVar> tvm::tir::BlockNode::iter_vars

The variables of the block.

◆ match_buffers

Array<MatchBufferRegion> tvm::tir::BlockNode::match_buffers

The match buffer regions.

◆ name_hint

String tvm::tir::BlockNode::name_hint

The name_hint of the block.

◆ reads

Array<BufferRegion> tvm::tir::BlockNode::reads

The read buffer regions of the block.

◆ writes

Array<BufferRegion> tvm::tir::BlockNode::writes

The write buffer regions of the block.

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

include/tvm/tir/stmt.h

Public Member Functions

Public Attributes

Static Public Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ SEqualReduce()

◆ SHashReduce()

◆ TVM_DECLARE_FINAL_OBJECT_INFO()

◆ VisitAttrs()

Member Data Documentation

◆ _type_key

◆ alloc_buffers

◆ annotations

◆ body

◆ init

◆ iter_vars

◆ match_buffers

◆ name_hint

◆ reads

◆ writes