1/* Header file for High-level loop manipulation functions.
2 Copyright (C) 2013-2017 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20#ifndef GCC_TREE_SSA_LOOP_MANIP_H
21#define GCC_TREE_SSA_LOOP_MANIP_H
22
23typedef void (*transform_callback)(struct loop *, void *);
24
25extern void create_iv (tree, tree, tree, struct loop *, gimple_stmt_iterator *,
26 bool, tree *, tree *);
27extern void rewrite_into_loop_closed_ssa_1 (bitmap, unsigned, int,
28 struct loop *);
29extern void rewrite_into_loop_closed_ssa (bitmap, unsigned);
30extern void rewrite_virtuals_into_loop_closed_ssa (struct loop *);
31extern void verify_loop_closed_ssa (bool, struct loop * = NULL);
32
33static inline void
34checking_verify_loop_closed_ssa (bool verify_ssa_p, struct loop *loop = NULL)
35{
36 if (flag_checking)
37 verify_loop_closed_ssa (verify_ssa_p, loop);
38}
39
40extern basic_block split_loop_exit_edge (edge);
41extern basic_block ip_end_pos (struct loop *);
42extern basic_block ip_normal_pos (struct loop *);
43extern void standard_iv_increment_position (struct loop *,
44 gimple_stmt_iterator *, bool *);
45extern bool gimple_duplicate_loop_to_header_edge (struct loop *, edge,
46 unsigned int, sbitmap,
47 edge, vec<edge> *,
48 int);
49extern bool can_unroll_loop_p (struct loop *loop, unsigned factor,
50 struct tree_niter_desc *niter);
51extern gcov_type niter_for_unrolled_loop (struct loop *, unsigned);
52extern void tree_transform_and_unroll_loop (struct loop *, unsigned,
53 edge, struct tree_niter_desc *,
54 transform_callback, void *);
55extern void tree_unroll_loop (struct loop *, unsigned,
56 edge, struct tree_niter_desc *);
57extern tree canonicalize_loop_ivs (struct loop *, tree *, bool);
58
59
60
61#endif /* GCC_TREE_SSA_LOOP_MANIP_H */
62