experiment with adding NULLITY predicate

[c11tester.git] / predicate.h

diff --git a/predicate.h b/predicate.h
index 3dfb8d5baba24ea1fc28518c5878e0fb916818e1..dbb959ea4b0cb84cee1bcbc198f71bf741547654 100644 (file)
--- a/predicate.h
+++ b/predicate.h
@@ -34,14 +34,22 @@ struct pred_expr {
 
 class Predicate {
 public:
-       Predicate(FuncInst * func_inst);
+       Predicate(FuncInst * func_inst, bool is_entry = false);
        ~Predicate();
 
        FuncInst * get_func_inst() { return func_inst; }
        PredExprSet * get_pred_expressions() { return &pred_expressions; }
        void add_predicate(token_t token, void * location, bool value);
        void add_child(Predicate * child);
+       void set_parent(Predicate * parent_pred) { parent = parent_pred; }
+       void set_backedge(Predicate * back_pred) { backedge = back_pred; }
+
        ModelVector<Predicate *> * get_children() { return &children; }
+       Predicate * get_parent() { return parent; }
+       Predicate * get_backedge() { return backedge; }
+
+       bool is_entry_predicate() { return entry_predicate; }
+       void set_entry_predicate() { entry_predicate = true; }
 
        void print_predicate();
        void print_pred_subtree();
@@ -49,9 +57,17 @@ public:
        MEMALLOC
 private:
        FuncInst * func_inst;
-       /* may have multiple precicates */
+       bool entry_predicate;
+
+       /* may have multiple predicates */
        PredExprSet pred_expressions;
        ModelVector<Predicate *> children;
+
+       /* only a single parent may exist */
+       Predicate * parent;
+
+       /* assume almost one back edge exists */
+       Predicate * backedge;
 };
 
 #endif /* __PREDICATE_H__ */