/* 
   Copyright 1994-2003 Free Software Foundation, Inc.

   This program 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 2 of the License, or
   (at your option) any later version.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  

   You may contact the author at:

   mailto::camille@bluegrass.net

   or by snail mail at:

   David Lindauer
   850 Washburn Ave Apt 99
   Louisville, KY 40222
*/
/*
 * iopt.h
 *
 * icode optimization structures
 */
#define DUMP_GCSE_INFO

#define isset(array,bit) ((array)[(bit)/8] & bittab[(bit) & 7])
#define setbit(array,bit)   (array)[(bit)/8] |= bittab[(bit) & 7]
#define clearbit(array,bit)   (array)[(bit)/8] &= ~bittab[(bit) & 7]


/*
 * basic blocks are kept in this type of structure
 * and marked with an i_block inn the icode
 */
#define BLOCKLIST_VISITED 1

typedef struct _blocklist {
	struct _blocklist *link;
	struct _block {
		short blocknum;
      short dfstnum ;
      short flags ;
      short callcount ;
		struct _blocklist *flowfwd,*flowback;
		BYTE *p_in,*p_out,*p_gen,*p_kill;
      BYTE *p_ain,*p_aout,*p_agen,*p_akill;
      BYTE *p_cin,*p_cout,*p_cgen,*p_ckill;
      BYTE *p_def, *p_use, *p_live_in, *p_live_out ;
      BYTE *p_pin, *p_pout ;
		QUAD *head,*tail;
	} *block;
} BLOCKLIST;

typedef struct _block BLOCK;
/*
 * common code elimination uses this to track
 * all the gotos branching to a given label
 */
typedef struct _comgo {
	char size;
	QUAD *head, *tail;
} COMGOREC;
/*
 * DAG structures
 */

typedef struct _daglist {
	struct _daglist *link;
	BYTE *key;
	BYTE *rv;
} DAGLIST;

typedef struct _list2 {
   struct _list2 *link ;
   int id ;
   struct _l2data {
      IMODE *ans ;
      QUAD *val ;
   } data ;
} LIST2 ;
      
typedef struct _list3 {
   struct _list3 *link ;
   IMODE *ans ;
   LIST *decllist ;
} LIST3 ;

#include "iopt.p"