cprover
constant_propagator_domaint Class Reference

#include <constant_propagator.h>

Inheritance diagram for constant_propagator_domaint:
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Collaboration diagram for constant_propagator_domaint:
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Classes

struct  valuest
 

Public Member Functions

virtual void transform (locationt from, locationt to, ai_baset &ai_base, const namespacet &ns) final override
 
virtual void output (std::ostream &out, const ai_baset &ai_base, const namespacet &ns) const override
 
bool merge (const constant_propagator_domaint &other, locationt from, locationt to)
 
virtual bool ai_simplify (exprt &condition, const namespacet &ns) const final override
 Simplify the condition given context-sensitive knowledge from the abstract state. More...
 
virtual void make_bottom () final override
 
virtual void make_top () final override
 
virtual void make_entry () final override
 
virtual bool is_bottom () const final override
 
virtual bool is_top () const final override
 
bool partial_evaluate (exprt &expr, const namespacet &ns) const
 Attempt to evaluate expression using domain knowledge This function changes the expression that is passed into it. More...
 
- Public Member Functions inherited from ai_domain_baset
 ai_domain_baset ()
 
virtual ~ai_domain_baset ()
 
virtual jsont output_json (const ai_baset &ai, const namespacet &ns) const
 
virtual xmlt output_xml (const ai_baset &ai, const namespacet &ns) const
 
virtual bool ai_simplify_lhs (exprt &condition, const namespacet &ns) const
 Use the information in the domain to simplify the expression on the LHS of an assignment. More...
 

Public Attributes

valuest values
 

Protected Member Functions

void assign_rec (valuest &values, const exprt &lhs, const exprt &rhs, const namespacet &ns)
 
bool two_way_propagate_rec (const exprt &expr, const namespacet &ns)
 handles equalities and conjunctions containing equalities More...
 
bool partial_evaluate_with_all_rounding_modes (exprt &expr, const namespacet &ns) const
 Attempt to evaluate an expression in all rounding modes. More...
 
bool replace_constants_and_simplify (exprt &expr, const namespacet &ns) const
 

Additional Inherited Members

- Public Types inherited from ai_domain_baset
typedef goto_programt::const_targett locationt
 

Detailed Description

Definition at line 21 of file constant_propagator.h.

Member Function Documentation

◆ ai_simplify()

bool constant_propagator_domaint::ai_simplify ( exprt condition,
const namespacet ns 
) const
finaloverridevirtual

Simplify the condition given context-sensitive knowledge from the abstract state.

parameters: The condition to simplify and its namespace.
Returns
The simplified condition.

Reimplemented from ai_domain_baset.

Definition at line 271 of file constant_propagator.cpp.

References partial_evaluate().

◆ assign_rec()

void constant_propagator_domaint::assign_rec ( valuest values,
const exprt lhs,
const exprt rhs,
const namespacet ns 
)
protected

◆ is_bottom()

◆ is_top()

virtual bool constant_propagator_domaint::is_top ( ) const
inlinefinaloverridevirtual

Implements ai_domain_baset.

Definition at line 64 of file constant_propagator.h.

References constant_propagator_domaint::valuest::is_top(), and values.

◆ make_bottom()

virtual void constant_propagator_domaint::make_bottom ( )
inlinefinaloverridevirtual

◆ make_entry()

virtual void constant_propagator_domaint::make_entry ( )
inlinefinaloverridevirtual

Implements ai_domain_baset.

Definition at line 54 of file constant_propagator.h.

References make_top().

◆ make_top()

virtual void constant_propagator_domaint::make_top ( )
inlinefinaloverridevirtual

Implements ai_domain_baset.

Definition at line 49 of file constant_propagator.h.

References constant_propagator_domaint::valuest::set_to_top(), and values.

Referenced by make_entry().

◆ merge()

bool constant_propagator_domaint::merge ( const constant_propagator_domaint other,
locationt  from,
locationt  to 
)
Returns
Return true if "this" has changed.

Definition at line 499 of file constant_propagator.cpp.

References constant_propagator_domaint::valuest::merge(), and values.

◆ output()

void constant_propagator_domaint::output ( std::ostream &  out,
const ai_baset ai_base,
const namespacet ns 
) const
overridevirtual

Reimplemented from ai_domain_baset.

Definition at line 387 of file constant_propagator.cpp.

References constant_propagator_domaint::valuest::output(), and values.

Referenced by transform().

◆ partial_evaluate()

bool constant_propagator_domaint::partial_evaluate ( exprt expr,
const namespacet ns 
) const

Attempt to evaluate expression using domain knowledge This function changes the expression that is passed into it.

Parameters
exprThe expression to evaluate
nsThe namespace for symbols in the expression
Returns
True if the expression is unchanged, false otherwise

Definition at line 512 of file constant_propagator.cpp.

References ID_cprover_rounding_mode_str, constant_propagator_domaint::valuest::is_constant(), partial_evaluate_with_all_rounding_modes(), replace_constants_and_simplify(), and values.

Referenced by ai_simplify(), assign_rec(), and transform().

◆ partial_evaluate_with_all_rounding_modes()

bool constant_propagator_domaint::partial_evaluate_with_all_rounding_modes ( exprt expr,
const namespacet ns 
) const
protected

Attempt to evaluate an expression in all rounding modes.

If the result is the same for all rounding modes, change expr to that result and return false. Otherwise, return true.

Definition at line 530 of file constant_propagator.cpp.

References from_integer(), ID_cprover_rounding_mode_str, replace_constants_and_simplify(), ieee_floatt::ROUND_TO_EVEN, ieee_floatt::ROUND_TO_MINUS_INF, ieee_floatt::ROUND_TO_PLUS_INF, ieee_floatt::ROUND_TO_ZERO, constant_propagator_domaint::valuest::set_to(), and values.

Referenced by partial_evaluate().

◆ replace_constants_and_simplify()

bool constant_propagator_domaint::replace_constants_and_simplify ( exprt expr,
const namespacet ns 
) const
protected

◆ transform()

◆ two_way_propagate_rec()

bool constant_propagator_domaint::two_way_propagate_rec ( const exprt expr,
const namespacet ns 
)
protected

Member Data Documentation

◆ values


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