gcc/tree-ssa-threadedge.h

   1 /* Header file for SSA jump threading.
   2    Copyright (C) 2013-2017 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_THREADEDGE_H
  21 #define GCC_TREE_SSA_THREADEDGE_H
  22
  23 extern vec<tree> ssa_name_values;
  24 #define SSA_NAME_VALUE(x) \
  25     (SSA_NAME_VERSION (x) < ssa_name_values.length () \
  26      ? ssa_name_values[SSA_NAME_VERSION (x)] \
  27      : NULL_TREE)
  28 extern void set_ssa_name_value (tree, tree);
  29 extern void threadedge_initialize_values (void);
  30 extern void threadedge_finalize_values (void);
  31 extern bool potentially_threadable_block (basic_block);
  32 extern void propagate_threaded_block_debug_into (basic_block, basic_block);
  33 extern void thread_across_edge (gcond *, edge, bool,
  34                                 const_and_copies *,
  35                                 avail_exprs_stack *,
  36                                 tree (*) (gimple *, gimple *,
  37                                           avail_exprs_stack *));
  38
  39 #endif /* GCC_TREE_SSA_THREADEDGE_H */