gcc/m2/gm2-compiler/M2Optimize.def

   1 (* M2Optimize.def removes redundant quadruples.
   2
   3 Copyright (C) 2001-2023 Free Software Foundation, Inc.
   4 Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
   5
   6 This file is part of GNU Modula-2.
   7
   8 GNU Modula-2 is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GNU Modula-2 is distributed in the hope that it will be useful, but
  14 WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Modula-2; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  *)
  21
  22 DEFINITION MODULE M2Optimize ;
  23
  24 (*
  25     Title      : M2Optimize.def
  26     Author     : Gaius Mulley
  27     System     : UNIX (gm2)
  28     Date       : Fri Aug 20 14:51:00 1999
  29     Description: provides a very simple branch optimization module so that
  30                  we dont give too many redundant gotos to gcc.
  31 *)
  32
  33
  34 EXPORT QUALIFIED FoldBranches, RemoveProcedures, DisplayReachable ;
  35
  36
  37 (*
  38    FoldBranches - folds unneccessary branches in the list of quadruples.
  39 *)
  40
  41 PROCEDURE FoldBranches (start, end: CARDINAL) ;
  42
  43
  44 (*
  45    RemoveProcedures - removes any procedures that are never referenced
  46                       by the quadruples.
  47 *)
  48
  49 PROCEDURE RemoveProcedures (scope: CARDINAL) ;
  50
  51
  52 (*
  53    DisplayReachable - displays the data structures surrounding Reachablity.
  54 *)
  55
  56 PROCEDURE DisplayReachable ;
  57
  58
  59 END M2Optimize.