diff options
Diffstat (limited to 'gcc/builtins.h')
| -rw-r--r-- | gcc/builtins.h | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/gcc/builtins.h b/gcc/builtins.h index b00af627223..0ca1cbc9f4d 100644 --- a/gcc/builtins.h +++ b/gcc/builtins.h @@ -187,7 +187,7 @@ public: ~ssa_name_limit_t (); }; -class range_query; +class pointer_query; /* Describes a reference to an object used in an access. */ struct access_ref @@ -203,7 +203,7 @@ struct access_ref /* Return the object to which REF refers. */ tree get_ref (vec<access_ref> *, access_ref * = NULL, int = 1, - ssa_name_limit_t * = NULL, range_query * = NULL) const; + ssa_name_limit_t * = NULL, pointer_query * = NULL) const; /* Return true if OFFRNG is the constant zero. */ bool offset_zero () const @@ -271,6 +271,52 @@ struct access_ref bool parmarray; }; +class range_query; + +/* Queries and caches compute_objsize results. */ +class pointer_query +{ + DISABLE_COPY_AND_ASSIGN (pointer_query); + +public: + /* Type of the two-level cache object defined by clients of the class + to have pointer SSA_NAMEs cached for speedy access. */ + struct cache_type + { + /* 1-based indices into cache. */ + vec<unsigned> indices; + /* The cache itself. */ + vec<access_ref> access_refs; + }; + + /* Construct an object with the given Ranger instance and cache. */ + explicit pointer_query (range_query * = NULL, cache_type * = NULL); + + /* Retrieve the access_ref for a variable from cache if it's there. */ + const access_ref* get_ref (tree, int = 1) const; + + /* Retrieve the access_ref for a variable from cache or compute it. */ + bool get_ref (tree, access_ref*, int = 1); + + /* Add an access_ref for the SSA_NAME to the cache. */ + void put_ref (tree, const access_ref&, int = 1); + + /* Flush the cache. */ + void flush_cache (); + + /* A Ranger instance. May be null to use global ranges. */ + range_query *rvals; + /* Cache of SSA_NAMEs. May be null to disable caching. */ + cache_type *var_cache; + + /* Cache performance counters. */ + mutable unsigned hits; + mutable unsigned misses; + mutable unsigned failures; + mutable unsigned depth; + mutable unsigned max_depth; +}; + /* Describes a pair of references used in an access by built-in functions like memcpy. */ struct access_data @@ -295,7 +341,10 @@ struct access_data extern tree gimple_call_alloc_size (gimple *, wide_int[2] = NULL, range_query * = NULL); extern tree gimple_parm_array_size (tree, wide_int[2], bool * = NULL); + extern tree compute_objsize (tree, int, access_ref *, range_query * = NULL); +/* Legacy/transitional API. Should not be used in new code. */ +extern tree compute_objsize (tree, int, access_ref *, pointer_query *); extern tree compute_objsize (tree, int, tree * = NULL, tree * = NULL, range_query * = NULL); extern bool check_access (tree, tree, tree, tree, tree, |