typedef struct prop_value_d prop_value_t;
+/* Type of value ranges. See value_range_d for a description of these
+ types. */
+enum value_range_type { VR_UNDEFINED, VR_RANGE, VR_ANTI_RANGE, VR_VARYING };
+
+/* Range of values that can be associated with an SSA_NAME after VRP
+ has executed. */
+struct value_range_d
+{
+ /* Lattice value represented by this range. */
+ enum value_range_type type;
+
+ /* Minimum and maximum values represented by this range. These
+ values should be interpreted as follows:
+
+ - If TYPE is VR_UNDEFINED or VR_VARYING then MIN and MAX must
+ be NULL.
+
+ - If TYPE == VR_RANGE then MIN holds the minimum value and
+ MAX holds the maximum value of the range [MIN, MAX].
+
+ - If TYPE == ANTI_RANGE the variable is known to NOT
+ take any values in the range [MIN, MAX]. */
+ tree min;
+ tree max;
+
+ /* Set of SSA names whose value ranges are equivalent to this one.
+ This set is only valid when TYPE is VR_RANGE or VR_ANTI_RANGE. */
+ bitmap equiv;
+};
+
+typedef struct value_range_d value_range_t;
+
+
/* Call-back functions used by the value propagation engine. */
typedef enum ssa_prop_result (*ssa_prop_visit_stmt_fn) (tree, edge *, tree *);
typedef enum ssa_prop_result (*ssa_prop_visit_phi_fn) (tree);
bool stmt_makes_single_store (tree);
prop_value_t *get_value_loaded_by (tree, prop_value_t *);
bool replace_uses_in (tree, bool *, prop_value_t *);
-void substitute_and_fold (prop_value_t *);
+void substitute_and_fold (prop_value_t *, bool);
#endif /* _TREE_SSA_PROPAGATE_H */