1  /* Header file for High-level loop manipulation functions.
       2     Copyright (C) 2013-2023 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  #ifndef GCC_TREE_SSA_LOOP_MANIP_H
      21  #define GCC_TREE_SSA_LOOP_MANIP_H
      22  
      23  typedef void (*transform_callback)(class loop *, void *);
      24  
      25  extern void create_iv (tree, tree, tree, class loop *, gimple_stmt_iterator *,
      26  		       bool, tree *, tree *);
      27  extern void rewrite_into_loop_closed_ssa (bitmap, unsigned);
      28  extern void verify_loop_closed_ssa (bool, class loop * = NULL);
      29  
      30  inline void
      31  checking_verify_loop_closed_ssa (bool verify_ssa_p, class loop *loop = NULL)
      32  {
      33    if (flag_checking)
      34      verify_loop_closed_ssa (verify_ssa_p, loop);
      35  }
      36  
      37  extern basic_block split_loop_exit_edge (edge, bool = false);
      38  extern basic_block ip_end_pos (class loop *);
      39  extern basic_block ip_normal_pos (class loop *);
      40  extern void standard_iv_increment_position (class loop *,
      41  					    gimple_stmt_iterator *, bool *);
      42  extern bool
      43  gimple_duplicate_loop_body_to_header_edge (class loop *, edge, unsigned int,
      44  					   sbitmap, edge, vec<edge> *, int);
      45  extern bool can_unroll_loop_p (class loop *loop, unsigned factor,
      46  			       class tree_niter_desc *niter);
      47  extern gcov_type niter_for_unrolled_loop (class loop *, unsigned);
      48  extern void tree_transform_and_unroll_loop (class loop *, unsigned,
      49  					    tree_niter_desc *,
      50  					    transform_callback, void *);
      51  extern void tree_unroll_loop (class loop *, unsigned, tree_niter_desc *);
      52  extern tree canonicalize_loop_ivs (class loop *, tree *, bool);
      53  extern unsigned int loop_invariant_motion_in_fun (function *, bool);
      54  
      55  
      56  #endif /* GCC_TREE_SSA_LOOP_MANIP_H */