GCC Middle and Back End API Reference
tree-ssa-loop-niter.h
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1 /* Header file for loop interation estimates.
2  Copyright (C) 2013 Free Software Foundation, Inc.
3 
4 This file is part of GCC.
5 
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.
10 
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.
15 
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/>. */
19 
20 #ifndef GCC_TREE_SSA_LOOP_NITER_H
21 #define GCC_TREE_SSA_LOOP_NITER_H
22 
23 extern tree expand_simple_operations (tree);
24 extern bool loop_only_exit_p (const struct loop *, const_edge);
25 extern bool number_of_iterations_exit (struct loop *, edge,
26  struct tree_niter_desc *niter, bool,
27  bool every_iteration = true);
28 extern tree find_loop_niter (struct loop *, edge *);
29 extern bool finite_loop_p (struct loop *);
30 extern tree loop_niter_by_eval (struct loop *, edge);
31 extern tree find_loop_niter_by_eval (struct loop *, edge *);
32 extern bool estimated_loop_iterations (struct loop *, double_int *);
33 extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
34 extern bool max_loop_iterations (struct loop *, double_int *);
35 extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
36 extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
37 extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
38 extern bool max_stmt_executions (struct loop *, double_int *);
39 extern bool estimated_stmt_executions (struct loop *, double_int *);
40 extern void estimate_numbers_of_iterations (void);
41 extern bool stmt_dominates_stmt_p (gimple, gimple);
42 extern bool nowrap_type_p (tree);
43 extern bool scev_probably_wraps_p (tree, tree, gimple, struct loop *, bool);
44 extern void free_numbers_of_iterations_estimates_loop (struct loop *);
45 extern void free_numbers_of_iterations_estimates (void);
46 extern void substitute_in_loop_info (struct loop *, tree, tree);
47 
48 #endif /* GCC_TREE_SSA_LOOP_NITER_H */