gcc/tree-ssa-loop-manip.h

   1 /* Header file for High-level loop manipulation functions.
   2    Copyright (C) 2013-2018 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)(struct loop *, void *);
  24
  25 extern void create_iv (tree, tree, tree, struct loop *, gimple_stmt_iterator *,
  26                        bool, tree *, tree *);
  27 extern void rewrite_into_loop_closed_ssa_1 (bitmap, unsigned, int,
  28                                             struct loop *);
  29 extern void rewrite_into_loop_closed_ssa (bitmap, unsigned);
  30 extern void rewrite_virtuals_into_loop_closed_ssa (struct loop *);
  31 extern void verify_loop_closed_ssa (bool, struct loop * = NULL);
  32
  33 static inline void
  34 checking_verify_loop_closed_ssa (bool verify_ssa_p, struct loop *loop = NULL)
  35 {
  36   if (flag_checking)
  37     verify_loop_closed_ssa (verify_ssa_p, loop);
  38 }
  39
  40 extern basic_block split_loop_exit_edge (edge, bool = false);
  41 extern basic_block ip_end_pos (struct loop *);
  42 extern basic_block ip_normal_pos (struct loop *);
  43 extern void standard_iv_increment_position (struct loop *,
  44                                             gimple_stmt_iterator *, bool *);
  45 extern bool gimple_duplicate_loop_to_header_edge (struct loop *, edge,
  46                                                   unsigned int, sbitmap,
  47                                                   edge, vec<edge> *,
  48                                                   int);
  49 extern bool can_unroll_loop_p (struct loop *loop, unsigned factor,
  50                                struct tree_niter_desc *niter);
  51 extern gcov_type niter_for_unrolled_loop (struct loop *, unsigned);
  52 extern void tree_transform_and_unroll_loop (struct loop *, unsigned,
  53                                             edge, struct tree_niter_desc *,
  54                                             transform_callback, void *);
  55 extern void tree_unroll_loop (struct loop *, unsigned,
  56                               edge, struct tree_niter_desc *);
  57 extern tree canonicalize_loop_ivs (struct loop *, tree *, bool);
  58
  59
  60
  61 #endif /* GCC_TREE_SSA_LOOP_MANIP_H */