+/**
+ * Check, if two phi operands interfere.
+ * @param a A node which is operand to a phi function.
+ * @param b Another node which is operand to a phi function.
+ * @return 1, if @p a and @p b interfere, 0 if not.
+ */
+int phi_ops_interfere(const ir_node *a, const ir_node *b);
+
+#endif /* BERA_T_H */