gcc/tree-ssa-loop-niter.h

   1 /* Header file for loop interation estimates.
   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_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 (class loop *, tree);
  25 extern bool loop_only_exit_p (const class loop *, basic_block *body,
  26                               const_edge);
  27 extern bool number_of_iterations_exit (class loop *, edge,
  28                                        class tree_niter_desc *niter, bool,
  29                                        bool every_iteration = true,
  30                                        basic_block * = NULL);
  31 extern bool number_of_iterations_exit_assumptions (class loop *, edge,
  32                                                    class tree_niter_desc *,
  33                                                    gcond **, bool = true,
  34                                                    basic_block * = NULL);
  35 extern tree find_loop_niter (class loop *, edge *);
  36 extern bool finite_loop_p (class loop *);
  37 extern tree loop_niter_by_eval (class loop *, edge);
  38 extern tree find_loop_niter_by_eval (class loop *, edge *);
  39 extern bool estimated_loop_iterations (class loop *, widest_int *);
  40 extern HOST_WIDE_INT estimated_loop_iterations_int (class loop *);
  41 extern bool max_loop_iterations (class loop *, widest_int *);
  42 extern HOST_WIDE_INT max_loop_iterations_int (class loop *);
  43 extern bool likely_max_loop_iterations (class loop *, widest_int *);
  44 extern HOST_WIDE_INT likely_max_loop_iterations_int (class loop *);
  45 extern HOST_WIDE_INT max_stmt_executions_int (class loop *);
  46 extern HOST_WIDE_INT likely_max_stmt_executions_int (class loop *);
  47 extern HOST_WIDE_INT estimated_stmt_executions_int (class loop *);
  48 extern bool max_stmt_executions (class loop *, widest_int *);
  49 extern bool likely_max_stmt_executions (class loop *, widest_int *);
  50 extern bool estimated_stmt_executions (class loop *, widest_int *);
  51 extern void estimate_numbers_of_iterations (function *);
  52 extern void estimate_numbers_of_iterations (class loop *);
  53 extern bool stmt_dominates_stmt_p (gimple *, gimple *);
  54 extern bool nowrap_type_p (tree);
  55 extern bool scev_probably_wraps_p (tree, tree, tree, gimple *,
  56                                    class loop *, bool);
  57 extern void free_numbers_of_iterations_estimates (class loop *);
  58 extern void free_numbers_of_iterations_estimates (function *);
  59 extern tree simplify_replace_tree (tree, tree,
  60                                    tree, tree (*)(tree, void *) = NULL,
  61                                    void * = NULL, bool do_fold = true);
  62 extern void substitute_in_loop_info (class loop *, tree, tree);
  63
  64 #endif /* GCC_TREE_SSA_LOOP_NITER_H */