cwh_preg.cxx

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/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if 
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU General Public License along
  with this program; if not, write the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston MA 02111-1307, USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/


/* ====================================================================
 * ====================================================================
 *
 *
 * Revision history:
 *  dd-mmm-95 - Original Version
 *
 * Description: This file contains routines to provide pregs. 
 *              Copied from edwhirl.c, but later all the code to
 *              recycle pregs was removed.
 *
 * ====================================================================
 * ====================================================================
 */

static char *source_file = __FILE__;

#ifdef _KEEP_RCS_ID
#endif /* _KEEP_RCS_ID */

/* sgi includes */

#include "defs.h" 
#include "stab.h"
#include "strtab.h"
#include "wn.h"

/* conversion removes */

#include "cwh_defines.h"
#include "cwh_preg.h"
#include "cwh_addr.h"



#define MTYPE_MAX MTYPE_V

static TYPE_ID preg_ty_typeid[MTYPE_MAX];
static TYPE_ID preg_bt_typeid[MTYPE_MAX];

/*=============================================
 *
 * cwh_preg_next_preg
 * 
 * Get the next preg of the given MTYPE.
 *
 *=============================================
 */
extern PREG_det
cwh_preg_next_preg (TYPE_ID    btype,
                    char     * name,
                    WN       * home_wn )
{

  PREG_det det ;

  DevAssert(((btype < MTYPE_MAX) && (btype > MTYPE_FIRST)),
            ("Missing mtype - 2")) ;
  
  det.preg_ty = Be_Type_Tbl(preg_ty_typeid[btype]) ;
  det.preg_st = MTYPE_To_PREG(preg_bt_typeid[btype]);
  det.preg    = Create_Preg (btype, name);
  
  return (det);
} 

/*=============================================
 *
 * cwh_preg_temp_save
 * 
 * Saves the given WN in a preg, whose type is
 * that of the expression, and returns a 
 * LDID of the preg. 
 *
 *=============================================
 */
extern WN *
cwh_preg_temp_save(char * name, WN  * expr )
{
  TYPE_ID  bt;
  PREG_NUM pr;
  WN      *wn;
  
  bt = WNRTY(expr);
  pr = Create_Preg(bt,Index_To_Str(Save_Str(name)));
  cwh_addr_store_ST(MTYPE_To_PREG(bt), pr, 0, expr);

  wn = WN_LdidPreg(bt,pr);
  return wn;
}

/*=============================================
 *
 * fe_preg_init
 *
 * Set up preg tables.
 *
 *=============================================
 */
extern void
fe_preg_init (void)
{
  int i ;

  for (i = 0 ; i < MTYPE_MAX ; i++ ) {
    preg_ty_typeid[i] = MTYPE_I4 ;   
    preg_bt_typeid[i] = MTYPE_I4 ;
  }

  preg_ty_typeid[MTYPE_I8] = MTYPE_I8 ;   preg_bt_typeid[MTYPE_I8] = MTYPE_I8 ;

  preg_ty_typeid[MTYPE_U1] = MTYPE_U4 ;   
  preg_ty_typeid[MTYPE_U2] = MTYPE_U4 ;   
  preg_ty_typeid[MTYPE_U4] = MTYPE_U4 ;   
  preg_ty_typeid[MTYPE_U8] = MTYPE_U8 ;   preg_bt_typeid[MTYPE_U8] = MTYPE_I8 ;

  preg_ty_typeid[MTYPE_F4] = MTYPE_F4 ;   preg_bt_typeid[MTYPE_F4] = MTYPE_F4 ;
  preg_ty_typeid[MTYPE_F8] = MTYPE_F8 ;   preg_bt_typeid[MTYPE_F8] = MTYPE_F8 ;
  preg_ty_typeid[MTYPE_FQ] = MTYPE_FQ ;   preg_bt_typeid[MTYPE_FQ] = MTYPE_FQ ;

  preg_ty_typeid[MTYPE_C4] = MTYPE_F4 ;   preg_bt_typeid[MTYPE_C4] = MTYPE_F4 ;
  preg_ty_typeid[MTYPE_C8] = MTYPE_F8 ;   preg_bt_typeid[MTYPE_C8] = MTYPE_F8 ;
  preg_ty_typeid[MTYPE_CQ] = MTYPE_FQ ;   preg_bt_typeid[MTYPE_CQ] = MTYPE_FQ ;


} /* fe_preg_init */