add tactic to eliminate enumeration sorts in favor of bit-vectors

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/tactic/bv/dt2bv_tactic.h

@@ -0,0 +1,32 @@
+/*++
+Copyright (c) 2016 Microsoft Corporation
+
+Module Name:
+
+    dt2bv_tactic.h
+
+Abstract:
+
+    Tactic that eliminates finite domain data-types.
+
+Author:
+
+    nbjorner 2016-07-22
+
+Revision History:
+
+--*/
+#ifndef DT2BV_TACTIC_H_
+#define DT2BV_TACTIC_H_
+
+#include"params.h"
+class ast_manager;
+class tactic;
+
+tactic * mk_dt2bv_tactic(ast_manager & m, params_ref const & p = params_ref());
+
+/*
+    ADD_TACTIC("dt2bv", "eliminate finite domain data-types. Replace by bit-vectors.", "mk_dt2bv_tactic(m, p)")
+*/
+
+#endif