Structure the original short circuit. More...

#include <multi_way_if.hpp>

Inheritance diagram for multi_way_if:

Collaboration diagram for multi_way_if:

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Public Member Functions
	multi_way_if (const ParameterConstRef _Param, const application_managerRef _AppM, unsigned int function_id, const DesignFlowManagerConstRef design_flow_manager)
	Constructor. More...

	~multi_way_if () override
	Destructor. More...

DesignFlowStep_Status	InternalExec () override
	Restructures the unstructured code. More...

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

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

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

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...

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
void	MergeCondCond (const blocRef &pred_bb, const blocRef &curr_bb)
	Merge two basic blocks both ending with gimple_cond_K. More...

void	MergeCondMulti (const blocRef &pred_bb, const blocRef &curr_bb)
	Build the gimple_multi_way_if by mergin a gimple_cond with a gimple_multi_way_if. More...

void	MergeMultiCond (const blocRef &pred_bb, const blocRef &curr_bb)
	Merge a gimple_cond in a gimple_multi_way_if. More...

void	MergeMultiMulti (const blocRef &pred_bb, const blocRef &curr_bb)
	Merge two gimple_multi_way_if in a single one. More...

void	UpdateCfg (const blocRef &pred_bb, const blocRef &curr_bb)
	Update the basic block control flow graph data structure. More...

void	FixCfg (const blocRef &pred_bb, const blocRef &succ_bb)
	Insert a basic block on an edge. More...

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
statement_list *	sl
	The statement list of the analyzed function. More...

tree_managerRef	TM
	The tree manager. More...

tree_manipulationRef	tree_man
	The tree manipulation. More...

bool	bb_modified
	Modified file. 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

Structure the original short circuit.

Definition at line 64 of file multi_way_if.hpp.

Constructor & Destructor Documentation

◆ multi_way_if()

multi_way_if::multi_way_if	(	const ParameterConstRef	_Param,
		const application_managerRef	_AppM,
		unsigned int	function_id,
		const DesignFlowManagerConstRef	design_flow_manager
	)

Constructor.

Parameters

Param	is the set of the parameters
AppM	is the application manager
function_id	is the identifier of the function
DesignFlowManagerConstRef	is the design flow manager

Definition at line 75 of file multi_way_if.cpp.

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

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◆ ~multi_way_if()

multi_way_if::~multi_way_if ( )

overridedefault

Destructor.

Referenced by multi_way_if().

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Member Function Documentation

◆ ComputeFrontendRelationships()

const CustomUnorderedSet< std::pair< FrontendFlowStepType, FrontendFlowStep::FunctionRelationship > > multi_way_if::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

Not executed

If schedule is not up to date, do not execute this step and invalidate UpdateSchedule

Implements FrontendFlowStep.

Definition at line 87 of file multi_way_if.cpp.

References FrontendFlowStep::AppM, FunctionFrontendFlowStep::CGetBBVersion(), FunctionFrontendFlowStep::ComputeSignature(), DesignFlowStep::DEPENDENCE_RELATIONSHIP, DesignFlowStep::design_flow_manager, FunctionFrontendFlowStep::function_behavior, FunctionFrontendFlowStep::function_id, DesignFlowStep::GetStatus(), DesignFlowStep::INVALIDATION_RELATIONSHIP, Wrefcount< T >::lock(), DesignFlowStep::parameters, DesignFlowStep::PRECEDENCE_RELATIONSHIP, SAME_FUNCTION, SUCCESS, THROW_UNREACHABLE, and WHOLE_APPLICATION.

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◆ FixCfg()

void multi_way_if::FixCfg	(	const blocRef &	pred_bb,
		const blocRef &	succ_bb
	)

private

Insert a basic block on an edge.

Parameters

pred_bb	is the index of the first basic block
succ_bb	is the index of the second basic block

The index of the basic block to be created

Create the new basic block and set all the fields

Fix the predecessor

Fix the last statement of the predecessor

Fix the successor

Fix the phi

Definition at line 728 of file multi_way_if.cpp.

References DesignFlowStep::debug_level, DEBUG_LEVEL_VERY_PEDANTIC, GET_NODE, INDENT_DBG_MEX, statement_list::list_of_bloc, phi, sl, STR, THROW_ASSERT, and TM.

Referenced by InternalExec().

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◆ HasToBeExecuted()

bool multi_way_if::HasToBeExecuted ( ) const

overridevirtual

Check if this step has actually to be executed.

Returns: true if the step has to be executed

Multi way if can be executed only after vectorization

Reimplemented from FunctionFrontendFlowStep.

Definition at line 796 of file multi_way_if.cpp.

References FrontendFlowStep::AppM, FunctionFrontendFlowStep::CGetBBVersion(), FunctionFrontendFlowStep::ComputeSignature(), DesignFlowStep::design_flow_manager, FunctionFrontendFlowStep::function_behavior, FunctionFrontendFlowStep::function_id, FunctionFrontendFlowStep::HasToBeExecuted(), Wrefcount< T >::lock(), NULL_VERTEX, and DesignFlowStep::parameters.

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◆ Initialize()

void multi_way_if::Initialize ( )

overridevirtual

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

Reimplemented from DesignFlowStep.

Definition at line 153 of file multi_way_if.cpp.

References FrontendFlowStep::AppM, bb_modified, tree_manager::CGetTreeNode(), FunctionFrontendFlowStep::function_id, GET_NODE, DesignFlowStep::parameters, sl, TM, and tree_man.

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◆ InternalExec()

DesignFlowStep_Status multi_way_if::InternalExec ( )

overridevirtual

Restructures the unstructured code.

add edges

add a connection between entry and exit thus avoiding problems with non terminating code

sort basic block vertices from the entry till the exit

check for short circuit conditions: i.e., if they have at least a successor in common if so we add a basic block on the shortest path (e.g., predecessor –> common successor) In this way in the produced gimple_multi_way_if there cannot be multiple conditions with the same next bb phi_opt will remove the extra basic block

Fixed point since list of successor is changed by FixCfg

now the merging starts

Implements FunctionFrontendFlowStep.

Definition at line 222 of file multi_way_if.cpp.

References FrontendFlowStep::AppM, bb_modified, CFG_SELECTOR, BBGraph::CGetBBNodeInfo(), cyclic_topological_sort(), DesignFlowStep::debug_level, DEBUG_LEVEL_VERY_PEDANTIC, bloc::ENTRY_BLOCK_ID, bloc::EXIT_BLOCK_ID, FixCfg(), FunctionFrontendFlowStep::function_behavior, FunctionFrontendFlowStep::function_id, GET_NODE, FunctionFrontendFlowStep::GetName(), INDENT_DBG_MEX, statement_list::list_of_bloc, MergeCondCond(), MergeCondMulti(), MergeMultiCond(), MergeMultiMulti(), DesignFlowStep::parameters, test_panda::restart, sl, STR, SUCCESS, THROW_ASSERT, UNCHANGED, UpdateCfg(), and FunctionFrontendFlowStep::WriteBBGraphDot().