+#ifndef __PREDICTAE_H__
+#define __PREDICATE_H__
+
#include "funcinst.h"
+#include "hashset.h"
+
+unsigned int pred_expr_hash (struct pred_expr *);
+bool pred_expr_equal(struct pred_expr *, struct pred_expr *);
+typedef HashSet<struct pred_expr *, uintptr_t, 0, model_malloc, model_calloc, model_free, pred_expr_hash, pred_expr_equal> PredExprSet;
+typedef HSIterator<struct pred_expr *, uintptr_t, 0, model_malloc, model_calloc, model_free, pred_expr_hash, pred_expr_equal> PredExprSetIter;
typedef enum predicate_token {
- EQUALITY, NULLITY
+ NOPREDICATE, EQUALITY, NULLITY
} token_t;
/* If token is EQUALITY, then the predicate asserts whether
* this load should read the same value as the last value
* read at memory location specified in predicate_expr.
*/
-struct predicate_expr {
+struct pred_expr {
+ pred_expr(token_t token, FuncInst * inst, bool value) :
+ token(token),
+ func_inst(inst),
+ value(value)
+ {}
+
token_t token;
- void * location;
+ FuncInst * func_inst;
bool value;
+
+ MEMALLOC
};
+/* Used by predicate generator */
+struct half_pred_expr {
+ half_pred_expr(token_t token, FuncInst * inst) :
+ token(token),
+ func_inst(inst)
+ {}
+
+ token_t token;
+ FuncInst * func_inst;
+
+ SNAPSHOTALLOC
+};
+
+
class Predicate {
public:
- Predicate();
+ Predicate(FuncInst * func_inst, bool is_entry = false);
~Predicate();
FuncInst * get_func_inst() { return func_inst; }
- ModelList<predicate_expr> * get_predicates() { return &predicates; }
- void add_predicate(predicate_expr predicate);
+ PredExprSet * get_pred_expressions() { return &pred_expressions; }
+
+ void add_predicate_expr(token_t token, FuncInst * func_inst, bool value);
+ void add_child(Predicate * child);
+ void set_parent(Predicate * parent_pred) { parent = parent_pred; }
+ void add_backedge(Predicate * back_pred) { backedges.add(back_pred); }
+ void copy_predicate_expr(Predicate * other);
+
+ ModelVector<Predicate *> * get_children() { return &children; }
+ Predicate * get_parent() { return parent; }
+ PredSet * get_backedges() { return &backedges; }
+
+ bool is_entry_predicate() { return entry_predicate; }
+ void set_entry_predicate() { entry_predicate = true; }
+
+ void print_predicate();
+ void print_pred_subtree();
MEMALLOC
private:
FuncInst * func_inst;
- /* may have multiple precicates */
- ModelList<predicate_expr> predicates;
+ bool entry_predicate;
+
+ /* may have multiple predicate expressions */
+ PredExprSet pred_expressions;
+ ModelVector<Predicate *> children;
+
+ /* only a single parent may exist */
+ Predicate * parent;
+
+ /* may have multiple back edges, e.g. nested loops */
+ PredSet backedges;
};
+
+#endif /* __PREDICATE_H__ */