(* M2Optimize.def removes redundant quadruples.

Copyright (C) 2001-2023 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.

This file is part of GNU Modula-2.

GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Modula-2; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  *)

DEFINITION MODULE M2Optimize ;

(*
    Title      : M2Optimize.def
    Author     : Gaius Mulley
    System     : UNIX (gm2)
    Date       : Fri Aug 20 14:51:00 1999
    Description: provides a very simple branch optimization module so that
                 we dont give too many redundant gotos to gcc.
*)


EXPORT QUALIFIED FoldBranches, RemoveProcedures, DisplayReachable ;


(*
   FoldBranches - folds unneccessary branches in the list of quadruples.
*)

PROCEDURE FoldBranches (start, end: CARDINAL) ;


(*
   RemoveProcedures - removes any procedures that are never referenced
                      by the quadruples.
*)

PROCEDURE RemoveProcedures (scope: CARDINAL) ;


(*
   DisplayReachable - displays the data structures surrounding Reachablity.
*)

PROCEDURE DisplayReachable ;


END M2Optimize.