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/* Header file for loop interation estimates.
Copyright (C) 2013-2015 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_TREE_SSA_LOOP_NITER_H
#define GCC_TREE_SSA_LOOP_NITER_H
extern tree expand_simple_operations (tree, tree = NULL);
extern tree simplify_using_initial_conditions (struct loop *,
tree, tree = NULL);
extern bool loop_only_exit_p (const struct loop *, const_edge);
extern bool number_of_iterations_exit (struct loop *, edge,
struct tree_niter_desc *niter, bool,
bool every_iteration = true);
extern tree find_loop_niter (struct loop *, edge *);
extern bool finite_loop_p (struct loop *);
extern tree loop_niter_by_eval (struct loop *, edge);
extern tree find_loop_niter_by_eval (struct loop *, edge *);
extern bool estimated_loop_iterations (struct loop *, widest_int *);
extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
extern bool max_loop_iterations (struct loop *, widest_int *);
extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
extern bool max_stmt_executions (struct loop *, widest_int *);
extern bool estimated_stmt_executions (struct loop *, widest_int *);
extern void estimate_numbers_of_iterations (void);
extern bool stmt_dominates_stmt_p (gimple *, gimple *);
extern bool nowrap_type_p (tree);
extern bool scev_probably_wraps_p (tree, tree, gimple *, struct loop *, bool);
extern void free_loop_control_ivs (struct loop *);
extern void free_numbers_of_iterations_estimates_loop (struct loop *);
extern void free_numbers_of_iterations_estimates (function *);
extern void substitute_in_loop_info (struct loop *, tree, tree);
#endif /* GCC_TREE_SSA_LOOP_NITER_H */
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