1 /* Header file for High-level loop manipulation functions.
2    Copyright (C) 2013-2014 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_MANIP_H
21 #define GCC_TREE_SSA_LOOP_MANIP_H
22 
23 typedef void (*transform_callback)(struct loop *, void *);
24 
25 extern void create_iv (tree, tree, tree, struct loop *, gimple_stmt_iterator *,
26 		       bool, tree *, tree *);
27 extern void rewrite_into_loop_closed_ssa (bitmap, unsigned);
28 extern void verify_loop_closed_ssa (bool);
29 extern basic_block split_loop_exit_edge (edge);
30 extern basic_block ip_end_pos (struct loop *);
31 extern basic_block ip_normal_pos (struct loop *);
32 extern void standard_iv_increment_position (struct loop *,
33 					    gimple_stmt_iterator *, bool *);
34 extern bool gimple_duplicate_loop_to_header_edge (struct loop *, edge,
35 						  unsigned int, sbitmap,
36 						  edge, vec<edge> *,
37 						  int);
38 extern bool can_unroll_loop_p (struct loop *loop, unsigned factor,
39 			       struct tree_niter_desc *niter);
40 extern void tree_transform_and_unroll_loop (struct loop *, unsigned,
41 					    edge, struct tree_niter_desc *,
42 					    transform_callback, void *);
43 extern void tree_unroll_loop (struct loop *, unsigned,
44 			      edge, struct tree_niter_desc *);
45 extern tree canonicalize_loop_ivs (struct loop *, tree *, bool);
46 
47 
48 
49 #endif /* GCC_TREE_SSA_LOOP_MANIP_H */
50