tree-ssa-loop-manip.h revision 1.1.1.2 
1/* Header file for High-level loop manipulation functions.
2   Copyright (C) 2013-2016 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 (bitmap, unsigned);
28extern void rewrite_virtuals_into_loop_closed_ssa (struct loop *);
29extern void verify_loop_closed_ssa (bool);
30
31static inline void
32checking_verify_loop_closed_ssa (bool verify_ssa_p)
33{
34  if (flag_checking)
35    verify_loop_closed_ssa (verify_ssa_p);
36}
37
38extern basic_block split_loop_exit_edge (edge);
39extern basic_block ip_end_pos (struct loop *);
40extern basic_block ip_normal_pos (struct loop *);
41extern void standard_iv_increment_position (struct loop *,
42					    gimple_stmt_iterator *, bool *);
43extern bool gimple_duplicate_loop_to_header_edge (struct loop *, edge,
44						  unsigned int, sbitmap,
45						  edge, vec<edge> *,
46						  int);
47extern bool can_unroll_loop_p (struct loop *loop, unsigned factor,
48			       struct tree_niter_desc *niter);
49extern void tree_transform_and_unroll_loop (struct loop *, unsigned,
50					    edge, struct tree_niter_desc *,
51					    transform_callback, void *);
52extern void tree_unroll_loop (struct loop *, unsigned,
53			      edge, struct tree_niter_desc *);
54extern tree canonicalize_loop_ivs (struct loop *, tree *, bool);
55
56
57
58#endif /* GCC_TREE_SSA_LOOP_MANIP_H */
59