gcc/tree-scalar-evolution.h

   1 /* Scalar evolution detector.
   2    Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
   3    Contributed by Sebastian Pop <s.pop@laposte.net>
   4
   5 This file is part of GCC.
   6
   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.
  11
  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.
  16
  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.  */
  21
  22 #ifndef GCC_TREE_SCALAR_EVOLUTION_H
  23 #define GCC_TREE_SCALAR_EVOLUTION_H
  24
  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 *);
  28
  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);
  37
  38 extern bool simple_iv (struct loop *, tree, tree, affine_iv *, bool);
  39
  40 /* Returns the loop of the polynomial chrec CHREC.  */
  41
  42 static inline struct loop *
  43 get_chrec_loop (tree chrec)
  44 {
  45   return get_loop (CHREC_VARIABLE (chrec));
  46 }
  47
  48 #endif  /* GCC_TREE_SCALAR_EVOLUTION_H  */