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[official-gcc.git] / gcc / tree-ssa-loop-niter.h
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1 /* Header file for loop interation estimates.
2 Copyright (C) 2013-2021 Free Software Foundation, Inc.
4 This file is part of GCC.
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.
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.
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/>. */
20 #ifndef GCC_TREE_SSA_LOOP_NITER_H
21 #define GCC_TREE_SSA_LOOP_NITER_H
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);
64 #endif /* GCC_TREE_SSA_LOOP_NITER_H */