/* Exported functions from alias.c
- Copyright (C) 2004 Free Software Foundation, Inc.
+ 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+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);
-extern bool alias_set_subset_of (HOST_WIDE_INT, HOST_WIDE_INT);
+/* The type of an alias set. */
+typedef HOST_WIDE_INT alias_set_type;
+
+extern alias_set_type new_alias_set (void);
+extern alias_set_type get_varargs_alias_set (void);
+extern alias_set_type get_frame_alias_set (void);
+extern bool component_uses_parent_alias_set (const_tree);
+extern bool alias_set_subset_of (alias_set_type, alias_set_type);
/* 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)
+#define ALIAS_SET_MEMORY_BARRIER ((alias_set_type) -1)
#endif /* GCC_ALIAS_H */