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1 /* Header file for loop interation estimates.
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2 Copyright (C) 2013-2018 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_TREE_SSA_LOOP_NITER_H
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21 #define GCC_TREE_SSA_LOOP_NITER_H
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22
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23 extern tree expand_simple_operations (tree, tree = NULL);
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24 extern tree simplify_using_initial_conditions (struct loop *, tree);
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25 extern bool loop_only_exit_p (const struct loop *, const_edge);
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26 extern bool number_of_iterations_exit (struct loop *, edge,
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27 struct tree_niter_desc *niter, bool,
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28 bool every_iteration = true);
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29 extern bool number_of_iterations_exit_assumptions (struct loop *, edge,
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30 struct tree_niter_desc *,
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31 gcond **, bool = true);
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32 extern tree find_loop_niter (struct loop *, edge *);
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33 extern bool finite_loop_p (struct loop *);
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34 extern tree loop_niter_by_eval (struct loop *, edge);
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35 extern tree find_loop_niter_by_eval (struct loop *, edge *);
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36 extern bool estimated_loop_iterations (struct loop *, widest_int *);
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37 extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
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38 extern bool max_loop_iterations (struct loop *, widest_int *);
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39 extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
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40 extern bool likely_max_loop_iterations (struct loop *, widest_int *);
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41 extern HOST_WIDE_INT likely_max_loop_iterations_int (struct loop *);
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42 extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
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43 extern HOST_WIDE_INT likely_max_stmt_executions_int (struct loop *);
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44 extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
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45 extern bool max_stmt_executions (struct loop *, widest_int *);
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46 extern bool likely_max_stmt_executions (struct loop *, widest_int *);
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47 extern bool estimated_stmt_executions (struct loop *, widest_int *);
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48 extern void estimate_numbers_of_iterations (function *);
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49 extern void estimate_numbers_of_iterations (struct loop *);
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50 extern bool stmt_dominates_stmt_p (gimple *, gimple *);
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51 extern bool nowrap_type_p (tree);
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52 extern bool scev_probably_wraps_p (tree, tree, tree, gimple *,
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53 struct loop *, bool);
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54 extern void free_numbers_of_iterations_estimates (struct loop *);
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55 extern void free_numbers_of_iterations_estimates (function *);
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56 extern void substitute_in_loop_info (struct loop *, tree, tree);
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57
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58 #endif /* GCC_TREE_SSA_LOOP_NITER_H */
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