overflow_neg2t Class Reference

Test for negation overflows. More...

#include <irep2_expr.h>

Inheritance diagram for overflow_neg2t:

Public Member Functions
	overflow_neg2t (const expr2tc &operand_)
	Primary constructor.
	overflow_neg2t (const overflow_neg2t &ref)=default
Public Member Functions inherited from expr2t
virtual	~expr2t ()=default
expr2tc	clone () const
expr2tc	with_type (const type2tc &new_type) const
	Build a fresh expression of the same kind and field values as this one, but with a different type.
bool	operator== (const expr2t &ref) const
bool	operator< (const expr2t &ref) const
bool	operator!= (const expr2t &ref) const
std::string	pretty (unsigned int indent=0) const
	Produce textual representation of this expr.
DUMP_METHOD void	dump () const
	Write textual representation of this object to stdout.
size_t	crc () const
	Calculate a hash/digest of the current expr.
bool	cmp (const expr2t &ref) const
	Structural comparison.
int	lt (const expr2t &ref) const
	Trinary structural ordering.
list_of_memberst	tostring (unsigned int indent) const
	Convert fields of subclasses to a string representation.
const expr2tc *	get_sub_expr (size_t idx) const
	Fetch a sub-operand.
size_t	get_num_sub_exprs () const
	Count the number of sub-exprs there are.
expr2tc	simplify () const
	Simplify an expression.
expr2tc	simplify (bool suppress_reassoc) const
	Simplify with reassociation suppression.
virtual expr2tc	do_simplify () const
	expr-specific simplification methods.
template<typename T>
void	foreach_operand (T &&t) const
	Indirect, abstract operand iteration.
template<typename T>
void	Foreach_operand (T &&t)
Public Member Functions inherited from irep2t
	irep2t () noexcept
	irep2t (const irep2t &) noexcept
irep2t &	operator= (const irep2t &)=delete
virtual	~irep2t ()=default
void	mark_writer () const noexcept
void	clear_writer () const noexcept

Public Attributes
expr2tc	operand
Public Attributes inherited from expr2t
const expr_ids	expr_id
	Instance of expr_ids recording tihs exprs type.
const type2tc	type
	Type of this expr.
std::atomic< size_t >	crc_val
Public Attributes inherited from irep2t
std::atomic< unsigned int >	refcount
std::atomic< std::uintptr_t >	writer_thread

Static Public Attributes
static constexpr auto	fields
static std::string	field_names [esbmct::num_type_fields]

Additional Inherited Members
Public Types inherited from expr2t
enum	expr_ids { end_expr_id }
	Enumeration identifying each sort of expr. More...
typedef esbmct::function_ref< void(const expr2tc &)>	const_op_delegate
typedef esbmct::function_ref< void(expr2tc &)>	op_delegate
typedef expr2tc	container_type
typedef expr2t	base_type
Static Public Member Functions inherited from irep2t
static std::uintptr_t	current_thread_tag () noexcept
Protected Member Functions inherited from expr2t
	expr2t (const type2tc &type, expr_ids id)
	Primary constructor.
	expr2t (const expr2t &ref)
	Copy constructor.
void	foreach_operand_impl_const (const_op_delegate &expr) const
void	foreach_operand_impl (op_delegate &expr)

Detailed Description

Test for negation overflows.

Check whether or not negating an operand would lead to an integer overflow - for example, there's no representation of -INT_MIN. Evaluates to true if overflow would occur.

Constructor & Destructor Documentation

overflow_neg2t() [1/2]

overflow_neg2t::overflow_neg2t ( const expr2tc & operand_ )

inline

Primary constructor.

Parameters

operand

Integer to test negation of.

overflow_neg2t() [2/2]

overflow_neg2t::overflow_neg2t ( const overflow_neg2t & ref )

default

Member Data Documentation

field_names

std::string overflow_neg2t::field_names

static

Initial value:

=
  {"operand", "", "", "", ""}

fields

auto overflow_neg2t::fields

staticconstexpr

Initial value:

=
    std::make_tuple(&expr2t::type, &overflow_neg2t::operand)

operand

expr2tc overflow_neg2t::operand

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

• src/irep2/irep2_expr.h
• src/irep2/irep2_expr.cpp