sdcc/src/SDCCpeeph.h

   1 /*-------------------------------------------------------------------------
   2   SDCCpeeph.h - Header file for The peep hole optimizer: for interpreting
   3                 the peep hole rules
   4
   5   Copyright (C) 1999, Sandeep Dutta . sandeep.dutta@usa.net
   6
   7   This program is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU General Public License as published by the
   9   Free Software Foundation; either version 2, or (at your option) any
  10   later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with this program; if not, write to the Free Software
  19   Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20 -------------------------------------------------------------------------*/
  21
  22 #ifndef  SDCCPEEPH_H
  23 #define SDCCPEEPH_H 1
  24
  25 #include "SDCCgen.h"
  26
  27 #define MAX_PATTERN_LEN 256
  28
  29 typedef struct peepRule
  30   {
  31     lineNode *match;
  32     lineNode *replace;
  33     unsigned int restart:1;
  34     unsigned int barrier:1;
  35     char *cond;
  36     hTab *vars;
  37     struct peepRule *next;
  38   }
  39 peepRule;
  40
  41 typedef struct
  42   {
  43     char name[SDCC_NAME_MAX + 1];
  44     int refCount;
  45     /* needed for deadMove: */
  46     bool passedLabel;
  47     int jmpToCount;
  48   }
  49 labelHashEntry;
  50
  51 bool isLabelDefinition (const char *line, const char **start, int *len,
  52                         bool isPeepRule);
  53
  54 extern hTab *labelHash;
  55 labelHashEntry *getLabelRef (const char *label, lineNode *head);
  56
  57 void initPeepHole (void);
  58 void peepHole (lineNode **);
  59
  60 const char * StrStr (const char * str1, const char * str2);
  61
  62 #endif