lldb_private::IHTRLayer Class Reference

HTR layer interface See lldb/docs/htr.rst for comprehensive HTR documentation. More...

#include <TraceHTR.h>

Inheritance diagram for lldb_private::IHTRLayer:

Public Member Functions
	IHTRLayer (size_t id)
	Construct new HTR layer.
size_t	GetLayerId () const
	Get the ID of the layer.
virtual HTRBlockMetadata	GetMetadataByIndex (size_t index) const =0
	Get the metadata of a unit (instruction or block) in the layer.
virtual size_t	GetNumUnits () const =0
	Get the total number of units (instruction or block) in this layer.
HTRBlock	MergeUnits (size_t start_unit_index, size_t num_units)
	Creates a new block from the result of merging a contiguous sequence of "units" (instructions or blocks depending on layer type) in this layer This allows the implementation class to decide how to store/generate this metadata.
virtual	~IHTRLayer ()=default

Protected Attributes
size_t	m_layer_id
	ID of the layer.

Detailed Description

HTR layer interface See lldb/docs/htr.rst for comprehensive HTR documentation.

Definition at line 138 of file TraceHTR.h.

Constructor & Destructor Documentation

IHTRLayer()

lldb_private::IHTRLayer::IHTRLayer ( size_t  id )

inline

Construct new HTR layer.

Parameters

[in]

id

The layer's id.

Definition at line 144 of file TraceHTR.h.

~IHTRLayer()

virtual lldb_private::IHTRLayer::~IHTRLayer ( )

virtualdefault

Member Function Documentation

GetLayerId()

size_t IHTRLayer::GetLayerId

(

)

const

Get the ID of the layer.

Returns

The layer ID of this layer.

Definition at line 68 of file TraceHTR.cpp.

References m_layer_id.

Referenced by lldb_private::BasicSuperBlockMerge(), and lldb_private::toJSON().

GetMetadataByIndex()

virtual HTRBlockMetadata lldb_private::IHTRLayer::GetMetadataByIndex ( size_t  index ) const

pure virtual

Get the metadata of a unit (instruction or block) in the layer.

Parameters

[in]

index

The position of the unit in the layer.

Returns

The metadata of the unit in the layer.

Implemented in lldb_private::HTRInstructionLayer, and lldb_private::HTRBlockLayer.

Referenced by lldb_private::BasicSuperBlockMerge(), and MergeUnits().

GetNumUnits()

virtual size_t lldb_private::IHTRLayer::GetNumUnits ( ) const

pure virtual

Get the total number of units (instruction or block) in this layer.

Returns

The total number of units in the layer.

Implemented in lldb_private::HTRInstructionLayer, and lldb_private::HTRBlockLayer.

Referenced by lldb_private::BasicSuperBlockMerge(), and lldb_private::TraceHTR::ExecutePasses().

MergeUnits()

HTRBlock IHTRLayer::MergeUnits	(	size_t	start_unit_index,
		size_t	num_units
	)

Creates a new block from the result of merging a contiguous sequence of "units" (instructions or blocks depending on layer type) in this layer This allows the implementation class to decide how to store/generate this metadata.

For example, in the case of the instruction layer we want to lazily generate this metadata instead of storing it for each instruction.

Parameters

[in]	start_unit_index	The index of the first unit to be merged.
[in]	num_units	The number of units to be merged. Must be >= 1, since merging 0 blocks does not make sense.

Returns

A new block instance representing the merge of the specified units.

Definition at line 200 of file TraceHTR.cpp.

References GetMetadataByIndex(), and lldb_private::HTRBlockMetadata::MergeMetadata().

Referenced by lldb_private::BasicSuperBlockMerge().

Member Data Documentation

m_layer_id

size_t lldb_private::IHTRLayer::m_layer_id

protected

ID of the layer.

Definition at line 188 of file TraceHTR.h.

Referenced by GetLayerId().

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

• TraceHTR.h
• TraceHTR.cpp