/* Header file for loop interation estimates.
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Copyright (C) 2013-2016 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_TREE_SSA_LOOP_NITER_H
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#define GCC_TREE_SSA_LOOP_NITER_H
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extern tree expand_simple_operations (tree, tree = NULL);
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extern tree simplify_using_initial_conditions (struct loop *,
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tree, tree = NULL);
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extern bool loop_only_exit_p (const struct loop *, const_edge);
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extern bool number_of_iterations_exit (struct loop *, edge,
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struct tree_niter_desc *niter, bool,
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bool every_iteration = true);
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extern tree find_loop_niter (struct loop *, edge *);
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extern bool finite_loop_p (struct loop *);
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extern tree loop_niter_by_eval (struct loop *, edge);
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extern tree find_loop_niter_by_eval (struct loop *, edge *);
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extern bool estimated_loop_iterations (struct loop *, widest_int *);
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extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
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extern bool max_loop_iterations (struct loop *, widest_int *);
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extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
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extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
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extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
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extern bool max_stmt_executions (struct loop *, widest_int *);
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extern bool estimated_stmt_executions (struct loop *, widest_int *);
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extern void estimate_numbers_of_iterations (void);
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extern bool stmt_dominates_stmt_p (gimple *, gimple *);
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extern bool nowrap_type_p (tree);
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extern bool scev_probably_wraps_p (tree, tree, gimple *, struct loop *, bool);
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extern void free_loop_control_ivs (struct loop *);
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extern void free_numbers_of_iterations_estimates_loop (struct loop *);
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extern void free_numbers_of_iterations_estimates (function *);
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extern void substitute_in_loop_info (struct loop *, tree, tree);
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#endif /* GCC_TREE_SSA_LOOP_NITER_H */
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