1/* Header file for loop interation estimates.
2 Copyright (C) 2013-2017 Free Software Foundation, Inc.
4This file is part of GCC.
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
23extern tree expand_simple_operations (tree, tree = NULL);
24extern tree simplify_using_initial_conditions (struct loop *, tree);
25extern bool loop_only_exit_p (const struct loop *, const_edge);
26extern bool number_of_iterations_exit (struct loop *, edge,
27 struct tree_niter_desc *niter, bool,
28 bool every_iteration = true);
29extern bool number_of_iterations_exit_assumptions (struct loop *, edge,
30 struct tree_niter_desc *,
31 gcond **, bool = true);
32extern tree find_loop_niter (struct loop *, edge *);
33extern bool finite_loop_p (struct loop *);
34extern tree loop_niter_by_eval (struct loop *, edge);
35extern tree find_loop_niter_by_eval (struct loop *, edge *);
36extern bool estimated_loop_iterations (struct loop *, widest_int *);
37extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
38extern bool max_loop_iterations (struct loop *, widest_int *);
39extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
40extern bool likely_max_loop_iterations (struct loop *, widest_int *);
41extern HOST_WIDE_INT likely_max_loop_iterations_int (struct loop *);
42extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
43extern HOST_WIDE_INT likely_max_stmt_executions_int (struct loop *);
44extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
45extern bool max_stmt_executions (struct loop *, widest_int *);
46extern bool likely_max_stmt_executions (struct loop *, widest_int *);
47extern bool estimated_stmt_executions (struct loop *, widest_int *);
48extern void estimate_numbers_of_iterations (function *);
49extern void estimate_numbers_of_iterations (struct loop *);
50extern bool stmt_dominates_stmt_p (gimple *, gimple *);
51extern bool nowrap_type_p (tree);
52extern bool scev_probably_wraps_p (tree, tree, tree, gimple *,
53 struct loop *, bool);
54extern void free_numbers_of_iterations_estimates (struct loop *);
55extern void free_numbers_of_iterations_estimates (function *);
56extern void substitute_in_loop_info (struct loop *, tree, tree);
58#endif /* GCC_TREE_SSA_LOOP_NITER_H */