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/* Exported functions from alias.c

   Copyright (C) 2004, 2007 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License as published by the Free

Software Foundation; either version 3, or (at your option) any later

version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#ifndef GCC_ALIAS_H

#define GCC_ALIAS_H

extern HOST_WIDE_INT new_alias_set (void);

extern HOST_WIDE_INT get_varargs_alias_set (void);

extern HOST_WIDE_INT get_frame_alias_set (void);

extern bool component_uses_parent_alias_set (tree);

/* This alias set can be used to force a memory to conflict with all

   other memories, creating a barrier across which no memory reference

   can move.  Note that there are other legacy ways to create such

   memory barriers, including an address of SCRATCH.  */

#define ALIAS_SET_MEMORY_BARRIER        ((HOST_WIDE_INT) -1)

#endif /* GCC_ALIAS_H */