gcc/tree-ssa-loop-niter.h

   1 /* Header file for loop interation estimates.
   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_NITER_H
  21 #define GCC_TREE_SSA_LOOP_NITER_H
  22
  23 extern tree expand_simple_operations (tree, tree = NULL);
  24 extern tree simplify_using_initial_conditions (struct loop *, tree);
  25 extern bool loop_only_exit_p (const struct loop *, const_edge);
  26 extern bool number_of_iterations_exit (struct loop *, edge,
  27                                        struct tree_niter_desc *niter, bool,
  28                                        bool every_iteration = true);
  29 extern bool number_of_iterations_exit_assumptions (struct loop *, edge,
  30                                                    struct tree_niter_desc *,
  31                                                    gcond **, bool = true);
  32 extern tree find_loop_niter (struct loop *, edge *);
  33 extern bool finite_loop_p (struct loop *);
  34 extern tree loop_niter_by_eval (struct loop *, edge);
  35 extern tree find_loop_niter_by_eval (struct loop *, edge *);
  36 extern bool estimated_loop_iterations (struct loop *, widest_int *);
  37 extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
  38 extern bool max_loop_iterations (struct loop *, widest_int *);
  39 extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
  40 extern bool likely_max_loop_iterations (struct loop *, widest_int *);
  41 extern HOST_WIDE_INT likely_max_loop_iterations_int (struct loop *);
  42 extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
  43 extern HOST_WIDE_INT likely_max_stmt_executions_int (struct loop *);
  44 extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
  45 extern bool max_stmt_executions (struct loop *, widest_int *);
  46 extern bool likely_max_stmt_executions (struct loop *, widest_int *);
  47 extern bool estimated_stmt_executions (struct loop *, widest_int *);
  48 extern void estimate_numbers_of_iterations (function *);
  49 extern void estimate_numbers_of_iterations (struct loop *);
  50 extern bool stmt_dominates_stmt_p (gimple *, gimple *);
  51 extern bool nowrap_type_p (tree);
  52 extern bool scev_probably_wraps_p (tree, tree, tree, gimple *,
  53                                    struct loop *, bool);
  54 extern void free_numbers_of_iterations_estimates (struct loop *);
  55 extern void free_numbers_of_iterations_estimates (function *);
  56 extern void substitute_in_loop_info (struct loop *, tree, tree);
  57
  58 #endif /* GCC_TREE_SSA_LOOP_NITER_H */