pointer_query Class Reference

#include <pointer-query.h>

Collaboration diagram for pointer_query:

Data Structures
struct	cache_type

Public Member Functions
	pointer_query (range_query *=nullptr)
const access_ref *	get_ref (tree, int=1) const
bool	get_ref (tree, gimple *, access_ref *, int=1)
void	put_ref (tree, const access_ref &, int=1)
void	flush_cache ()
void	dump (FILE *, bool=false)

Data Fields
range_query *	rvals
unsigned	hits
unsigned	misses
unsigned	failures
unsigned	depth
unsigned	max_depth

Private Member Functions
	DISABLE_COPY_AND_ASSIGN (pointer_query)

Private Attributes
cache_type	var_cache

Detailed Description

Queries and caches compute_objsize results.   

Constructor & Destructor Documentation

pointer_query()

pointer_query::pointer_query ( range_query * qry = nullptr )

explicit

Default ctor.  Initialize object with pointers to the range_query
instance to use or null.   

Member Function Documentation

DISABLE_COPY_AND_ASSIGN()

pointer_query::DISABLE_COPY_AND_ASSIGN ( pointer_query )

private

dump()

void pointer_query::dump	(	FILE *	dump_file,
		bool	contents = false )

Dump statistics and, optionally, cache contents to DUMP_FILE.   

References pointer_query::cache_type::access_refs, dump_file, failures, fputc(), ggc_alloc(), hits, i, pointer_query::cache_type::indices, max_depth, misses, print_generic_expr(), ssa_name, and var_cache.

flush_cache()

void pointer_query::flush_cache

(

)

Flush the cache if it's nonnull.   

References pointer_query::cache_type::access_refs, pointer_query::cache_type::indices, and var_cache.

Referenced by strlen_pass::~strlen_pass().

get_ref() [1/2]

bool pointer_query::get_ref	(	tree	ptr,
		gimple *	stmt,
		access_ref *	pref,
		int	ostype = 1 )

Retrieve the access_ref instance for a variable from the cache if it's
there or compute it and insert it into the cache if it's nonnonull.   

References pointer_query::cache_type::access_refs, compute_objsize(), failures, ggc_alloc(), hits, pointer_query::cache_type::indices, misses, pref, SSA_NAME_VERSION, TREE_CODE, and var_cache.

get_ref() [2/2]

const access_ref * pointer_query::get_ref	(	tree	ptr,
		int	ostype = 1 ) const

Return a pointer to the cached access_ref instance for the SSA_NAME
PTR if it's there or null otherwise.   

References pointer_query::cache_type::access_refs, ggc_alloc(), hits, pointer_query::cache_type::indices, misses, NULL, SSA_NAME_VERSION, and var_cache.

Referenced by array_bounds_checker::check_mem_ref(), and get_maxbound().

put_ref()

void pointer_query::put_ref	(	tree	ptr,
		const access_ref &	ref,
		int	ostype = 1 )

Add a copy of the access_ref REF for the SSA_NAME to the cache if it's
nonnull.   

References pointer_query::cache_type::access_refs, gcc_checking_assert, ggc_alloc(), pointer_query::cache_type::indices, access_ref::ref, access_ref::sizrng, SSA_NAME_VERSION, and var_cache.

Field Documentation

depth

unsigned pointer_query::depth

mutable

Referenced by strlen_pass::before_dom_children(), and compute_objsize().

failures

unsigned pointer_query::failures

mutable

Referenced by dump(), and get_ref().

hits

unsigned pointer_query::hits

mutable

Referenced by dump(), get_ref(), and get_ref().

max_depth

unsigned pointer_query::max_depth

mutable

Referenced by dump().

misses

unsigned pointer_query::misses

mutable

Referenced by dump(), get_ref(), and get_ref().

rvals

range_query* pointer_query::rvals

Referenced by strlen_pass::count_nonzero_bytes_addr(), get_range_strlen_dynamic(), array_bounds_checker::get_value_range(), strlen_pass::handle_builtin_memset(), handle_printf_call(), strlen_pass::handle_store(), and strlen_pass::maybe_warn_overflow().

var_cache

cache_type pointer_query::var_cache

private

Referenced by dump(), flush_cache(), get_ref(), get_ref(), and put_ref().

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

• pointer-query.h
• pointer-query.cc