2007-03-01 Paul Brook <paul@codesourcery.com>
[official-gcc.git] / gcc / tree-scalar-evolution.h
blob464fe8fc519cc23fc2f4de6d073c1fe936b17eee
1 /* Scalar evolution detector.
2 Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
3 Contributed by Sebastian Pop <s.pop@laposte.net>
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
20 02110-1301, USA. */
22 #ifndef GCC_TREE_SCALAR_EVOLUTION_H
23 #define GCC_TREE_SCALAR_EVOLUTION_H
25 extern tree number_of_latch_executions (struct loop *);
26 extern tree number_of_exit_cond_executions (struct loop *);
27 extern tree get_loop_exit_condition (struct loop *);
29 extern void scev_initialize (void);
30 extern void scev_reset (void);
31 extern void scev_finalize (void);
32 extern tree analyze_scalar_evolution (struct loop *, tree);
33 extern tree instantiate_parameters (struct loop *, tree);
34 extern void gather_stats_on_scev_database (void);
35 extern void scev_analysis (void);
36 unsigned int scev_const_prop (void);
38 extern bool simple_iv (struct loop *, tree, tree, affine_iv *, bool);
40 /* Returns the loop of the polynomial chrec CHREC. */
42 static inline struct loop *
43 get_chrec_loop (tree chrec)
45 return get_loop (CHREC_VARIABLE (chrec));
48 #endif /* GCC_TREE_SCALAR_EVOLUTION_H */