1  /* Control flow optimization header file.
       2     Copyright (C) 2014-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  
      21  #ifndef GCC_CFGCLEANUP_H
      22  #define GCC_CFGCLEANUP_H
      23  
      24  enum replace_direction { dir_none, dir_forward, dir_backward, dir_both };
      25  
      26  extern int flow_find_cross_jump (basic_block, basic_block, rtx_insn **,
      27  				 rtx_insn **, enum replace_direction*);
      28  extern int flow_find_head_matching_sequence (basic_block, basic_block,
      29  					     rtx_insn **, rtx_insn **, int);
      30  extern bool delete_unreachable_blocks (void);
      31  extern void delete_dead_jumptables (void);
      32  extern bool cleanup_cfg (int);
      33  extern bool bb_is_just_return (basic_block, rtx_insn **, rtx_insn **);
      34  
      35  #endif /* GCC_CFGCLEANUP_H */