#include <build_virtual_phi.hpp>

Inheritance diagram for BuildVirtualPhi:

Collaboration diagram for BuildVirtualPhi:

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Public Member Functions
	BuildVirtualPhi (const application_managerRef AppM, unsigned int function_id, const DesignFlowManagerConstRef design_flow_manager, const ParameterConstRef parameters)
	Constructor. More...

	~BuildVirtualPhi () override
	Destructor. More...

DesignFlowStep_Status	InternalExec () override
	Performs the loops analysis. More...

void	ComputeRelationships (DesignFlowStepSet &relationship, const DesignFlowStep::RelationshipType relationship_type) override
	Compute the relationships of a step with other steps. More...

Public Member Functions inherited from FunctionFrontendFlowStep
	FunctionFrontendFlowStep (const application_managerRef AppM, const unsigned int function_id, const FrontendFlowStepType frontend_flow_step_type, const DesignFlowManagerConstRef design_flow_manager, const ParameterConstRef parameters)
	Constructor. More...

	~FunctionFrontendFlowStep () override
	Destructor. More...

std::string	GetSignature () const override
	Return the signature of this step. More...

std::string	GetName () const override
	Return the name of this design step. More...

DesignFlowStep_Status	Exec () final
	Execute the step. More...

bool	HasToBeExecuted () const override
	Check if this step has actually to be executed. More...

unsigned int	CGetBBVersion () const

unsigned int	GetBitValueVersion () const

void	PrintInitialIR () const override
	Dump the initial intermediate representation. More...

void	PrintFinalIR () const override
	Dump the final intermediate representation. More...

Public Member Functions inherited from FrontendFlowStep
	FrontendFlowStep (const application_managerRef AppM, const FrontendFlowStepType frontend_flow_step_type, const DesignFlowManagerConstRef design_flow_manager, const ParameterConstRef parameters)
	Constructor. More...

	~FrontendFlowStep () override
	Destructor. More...

virtual std::string	GetKindText () const
	Return the name of the type of this frontend flow step. More...

DesignFlowStepFactoryConstRef	CGetDesignFlowStepFactory () const override
	Return the factory to create this type of steps. More...

void	PrintTreeManager (const bool before) const
	Dump the tree manager. More...

Public Member Functions inherited from DesignFlowStep
	DesignFlowStep (const DesignFlowManagerConstRef design_flow_manager, const ParameterConstRef parameters)
	Constructor. More...

virtual	~DesignFlowStep ()
	Destructor. More...

virtual void	Initialize ()
	Initialize the step (i.e., like a constructor, but executed just before exec. More...

DesignFlowStep_Status	GetStatus () const
	Return the status of this design step. More...

virtual void	WriteDot (std::ostream &out) const
	Write the label for a dot graph. More...

bool	IsComposed () const
	Returns if this step is composed. More...

int	CGetDebugLevel () const
	Return the debug level of the step. More...

Private Member Functions
const CustomUnorderedSet< std::pair< FrontendFlowStepType, FunctionRelationship > >	ComputeFrontendRelationships (const DesignFlowStep::RelationshipType relationship_type) const override
	Return the set of analyses in relationship with this design step. More...

Private Attributes
const tree_managerRef	TM
	The tree manager. More...

Additional Inherited Members
Public Types inherited from FrontendFlowStep
using	FunctionRelationship = enum { ALL_FUNCTIONS, CALLED_FUNCTIONS, CALLING_FUNCTIONS, SAME_FUNCTION, WHOLE_APPLICATION }
	The different relationship type between function analysis. More...

Public Types inherited from DesignFlowStep
enum	RelationshipType { DEPENDENCE_RELATIONSHIP, INVALIDATION_RELATIONSHIP, PRECEDENCE_RELATIONSHIP }
	The relationship type. More...

Static Public Member Functions inherited from FunctionFrontendFlowStep
static const std::string	ComputeSignature (const FrontendFlowStepType frontend_flow_step_type, const unsigned int function_id)
	Compute the signature of a function frontend flow step. More...

Static Public Member Functions inherited from FrontendFlowStep
static void	CreateSteps (const DesignFlowManagerConstRef design_flow_manager, const CustomUnorderedSet< std::pair< FrontendFlowStepType, FunctionRelationship >> &frontend_relationships, const application_managerConstRef application_manager, DesignFlowStepSet &relationships)
	Create the relationship steps of a step with other steps starting from already specified dependencies between frontend flow steps. More...

static const std::string	EnumToKindText (const FrontendFlowStepType frontend_flow_step_type)
	Given a frontend flow step type, return the name of the type. More...

Protected Member Functions inherited from FunctionFrontendFlowStep
void	WriteBBGraphDot (const std::string &filename) const
	Write the current version of statement list in dot format. More...

Protected Attributes inherited from FunctionFrontendFlowStep
const FunctionBehaviorRef	function_behavior
	The function behavior of the function to be analyzed. More...

const unsigned int	function_id
	The index of the function to be analyzed. More...

unsigned int	bb_version
	The version of the basic block intermediate representation on which this step has been applied. More...

unsigned int	bitvalue_version
	The version of the bitvalue information on which this step has been applied. More...

Protected Attributes inherited from FrontendFlowStep
const application_managerRef	AppM
	The application manager. More...

const FrontendFlowStepType	frontend_flow_step_type
	The type of this step. More...

unsigned int	print_counter
	Print counter. More...

Protected Attributes inherited from DesignFlowStep
bool	composed
	True if this step represents a composition of design flow steps (e.g., a flow); must be set by specialized constructors. More...

const Wrefcount< const DesignFlowManager >	design_flow_manager
	The design flow manager. More...

const ParameterConstRef	parameters
	Set of input parameters. More...

int	debug_level
	The debug level. More...

const int	output_level
	The output level. More...

Detailed Description

Definition at line 57 of file build_virtual_phi.hpp.

Constructor & Destructor Documentation

◆ BuildVirtualPhi()

BuildVirtualPhi::BuildVirtualPhi	(	const application_managerRef	_AppM,
		unsigned int	_function_id,
		const DesignFlowManagerConstRef	_design_flow_manager,
		const ParameterConstRef	_parameters
	)

Constructor.

Header include.

Parameters

AppM	is the application manager
function_id	is the node id of the function analyzed.
design_flow_manager	is the design flow manager
parameters	is the set of input parameters

. include algorithms/loops_detection include behavior include parser/compiler include tree includes

Definition at line 74 of file build_virtual_phi.cpp.

References DesignFlowStep::debug_level, DEBUG_LEVEL_NONE, GET_CLASS, DesignFlowStep::parameters, and ~BuildVirtualPhi().

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◆ ~BuildVirtualPhi()

BuildVirtualPhi::~BuildVirtualPhi ( )

overridedefault

Destructor.

Referenced by BuildVirtualPhi().

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Member Function Documentation

◆ ComputeFrontendRelationships()

const CustomUnorderedSet< std::pair< FrontendFlowStepType, FrontendFlowStep::FunctionRelationship > > BuildVirtualPhi::ComputeFrontendRelationships ( const DesignFlowStep::RelationshipType relationship_type ) const

overrideprivatevirtual

Return the set of analyses in relationship with this design step.

Parameters

relationship_type is the type of relationship to be considered

Implements FrontendFlowStep.

Definition at line 120 of file build_virtual_phi.cpp.

References DesignFlowStep::DEPENDENCE_RELATIONSHIP, DesignFlowStep::INVALIDATION_RELATIONSHIP, DesignFlowStep::PRECEDENCE_RELATIONSHIP, SAME_FUNCTION, and THROW_UNREACHABLE.

◆ ComputeRelationships()

void BuildVirtualPhi::ComputeRelationships	(	DesignFlowStepSet &	relationship,
		const DesignFlowStep::RelationshipType	relationship_type
	)

overridevirtual

Compute the relationships of a step with other steps.

Parameters

dependencies	is where relationships will be stored
relationship_type	is the type of relationship to be computed

Precedence step whose symbolic application frontend flow step has to be executed can be considered as dependence step

This is managed by FrontendFlowStep::ComputeRelationships

Reimplemented from FunctionFrontendFlowStep.

Definition at line 85 of file build_virtual_phi.cpp.

References FrontendFlowStep::AppM, FunctionFrontendFlowStep::ComputeRelationships(), FunctionFrontendFlowStep::ComputeSignature(), DesignFlowStep::DEPENDENCE_RELATIONSHIP, DesignFlowStep::design_flow_manager, FunctionFrontendFlowStep::function_id, FunctionFrontendFlowStep::GetSignature(), DesignFlowStep::INVALIDATION_RELATIONSHIP, Wrefcount< T >::lock(), NULL_VERTEX, DesignFlowStep::PRECEDENCE_RELATIONSHIP, SUCCESS, THROW_ASSERT, and THROW_UNREACHABLE.

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◆ InternalExec()

DesignFlowStep_Status BuildVirtualPhi::InternalExec ( )

overridevirtual

Performs the loops analysis.

Cache of created phi - first key is the used ssa - second key is the basic block where is created

Cache of reaching defs - first key is the used ssa - second key is the basic block to be considered

For each virtual operand its definition

The set of nodes which overwrite a vop

Computing definitions and overwriting

clean not reachable vuses

here we may have a Use-Def or a Def-Use. They are both perfectly fine.

Check uses

The index of the loop to be considered (the most internal loops which contains the definition and all the uses

The depth of the loop to be considered

The set of basic block uses

The set of statement uses

The set of false uses

Check if this use can be ignored because of transitive reduction

Use is in the considered loop

Use is in a more nested loop

Use is in a less nested loop

It is possible that the use is not reachable; this is due to the gcc alias oracle

Build the gimple nop where volatile ssa is defined

Set of basic blocks belonging to the loop

Set of basic blocks to be analyzed

Loop 0 must be managed in a different way

Remove all basic blocks from which no use can be reached

The phi is necessary only if there are different reaching definition

Phi must always be built in header loop if definition is inside the loop

Check if this is a irreducible loop

If loop is irreducible, than we have to consider the definition coming from sp_back_edge since it can be different: different definitions can enter in the loop in the different enter points

If this is the basic block definition or contains a use

Check if phi has to be created because of different definitions coming from outside the loop

Implements FunctionFrontendFlowStep.

Definition at line 154 of file build_virtual_phi.cpp.

References FrontendFlowStep::AppM, block::block(), BUILTIN_SRCP, CFG_SELECTOR, tree_helper::CGetType(), DesignFlowStep::debug_level, DEBUG_LEVEL_VERY_PEDANTIC, FB_CFG_SELECTOR, FunctionBehavior::FBB, FunctionFrontendFlowStep::function_behavior, FunctionFrontendFlowStep::function_id, GET_CONST_NODE, GET_INDEX_NODE, GET_NODE, INDENT_DBG_MEX, index, tree_node::index, DesignFlowStep::parameters, phi, test_panda::restart, STR, SUCCESS, lenet_tvm::target, THROW_ASSERT, TM, TOK, TOK_SCPE, TOK_SRCP, and tree_node::ToString().