fortran/

[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-structalias.h

diff --git a/gcc/tree-ssa-structalias.h b/gcc/tree-ssa-structalias.h
index 4725f28..165e5c1 100644 (file)
--- a/gcc/tree-ssa-structalias.h
+++ b/gcc/tree-ssa-structalias.h
@@ -16,18 +16,83 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GCC; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#ifndef TREE_ALIAS_COMMON
-#define TREE_ALIAS_COMMON
+#ifndef TREE_SSA_STRUCTALIAS_H
+#define TREE_SSA_STRUCTALIAS_H
+
+/* True if the data pointed to by PTR can alias anything.  */
+#define PTR_IS_REF_ALL(PTR) TYPE_REF_CAN_ALIAS_ALL (TREE_TYPE (PTR))
 
 struct constraint;
 typedef struct constraint *constraint_t;
+
+/* Alias information used by compute_may_aliases and its helpers.  */
+struct alias_info
+{
+  /* SSA names visited while collecting points-to information.  If bit I
+     is set, it means that SSA variable with version I has already been
+     visited.  */
+  sbitmap ssa_names_visited;
+
+  /* Array of SSA_NAME pointers processed by the points-to collector.  */
+  VEC(tree,heap) *processed_ptrs;
+
+  /* ADDRESSABLE_VARS contains all the global variables and locals that
+     have had their address taken.  */
+  struct alias_map_d **addressable_vars;
+  size_t num_addressable_vars;
+
+  /* POINTERS contains all the _DECL pointers with unique memory tags
+     that have been referenced in the program.  */
+  struct alias_map_d **pointers;
+  size_t num_pointers;
+
+  /* Number of function calls found in the program.  */
+  size_t num_calls_found;
+
+  /* Number of const/pure function calls found in the program.  */
+  size_t num_pure_const_calls_found;
+
+  /* Total number of virtual operands that will be needed to represent
+     all the aliases of all the pointers found in the program.  */
+  long total_alias_vops;
+
+  /* Variables that have been written to.  */
+  bitmap written_vars;
+
+  /* Pointers that have been used in an indirect store operation.  */
+  bitmap dereferenced_ptrs_store;
+
+  /* Pointers that have been used in an indirect load operation.  */
+  bitmap dereferenced_ptrs_load;
+
+  /* Memory tag for all the PTR_IS_REF_ALL pointers.  */
+  tree ref_all_symbol_mem_tag;
+};
+
+/* Keep track of how many times each pointer has been dereferenced in
+   the program using the aux variable.  This is used by the alias
+   grouping heuristic in compute_flow_insensitive_aliasing.  */
+#define NUM_REFERENCES(ANN) ((size_t)((ANN)->common.aux))
+#define NUM_REFERENCES_CLEAR(ANN) ((ANN)->common.aux) = 0
+#define NUM_REFERENCES_INC(ANN) (ANN)->common.aux = (void*) (((size_t)((ANN)->common.aux)) + 1)
+#define NUM_REFERENCES_SET(ANN, VAL) (ANN)->common.aux = (void*) ((void *)(VAL))
+
+/* In tree-ssa-alias.c.  */
+enum escape_type is_escape_site (tree);
+
+/* In tree-ssa-structalias.c.  */
+extern void compute_points_to_sets (struct alias_info *);
+extern void delete_points_to_sets (void);
 extern void dump_constraint (FILE *, constraint_t);
 extern void dump_constraints (FILE *);
 extern void debug_constraint (constraint_t);
 extern void debug_constraints (void);
 extern void dump_solution_for_var (FILE *, unsigned int);
 extern void debug_solution_for_var (unsigned int);
-#endif /* TREE_ALIAS_COMMON */
+extern void dump_sa_points_to_info (FILE *);
+extern void debug_sa_points_to_info (void);
+
+#endif /* TREE_SSA_STRUCTALIAS_H  */