gcc/tree-ssa-loop-manip.h

   1 /* Header file for High-level loop manipulation functions.
   2    Copyright (C) 2013-2022 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 static 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 */