gcc/alias.h

   1 /* Exported functions from alias.c
   2    Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the Free
  18 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301, USA.  */
  20
  21 #ifndef GCC_ALIAS_H
  22 #define GCC_ALIAS_H
  23
  24 extern HOST_WIDE_INT new_alias_set (void);
  25 extern HOST_WIDE_INT get_varargs_alias_set (void);
  26 extern HOST_WIDE_INT get_frame_alias_set (void);
  27 extern bool component_uses_parent_alias_set (tree);
  28 extern bool alias_set_subset_of (HOST_WIDE_INT, HOST_WIDE_INT);
  29
  30 /* This alias set can be used to force a memory to conflict with all
  31    other memories, creating a barrier across which no memory reference
  32    can move.  Note that there are other legacy ways to create such
  33    memory barriers, including an address of SCRATCH.  */
  34 #define ALIAS_SET_MEMORY_BARRIER        ((HOST_WIDE_INT) -1)
  35
  36 #endif /* GCC_ALIAS_H */