1/* Exported functions from alias.c 2 Copyright (C) 2004 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 2, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along with GCC; see the file COPYING. If not, write to the Free 18Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 1902110-1301, USA. */ 20 21#ifndef GCC_ALIAS_H 22#define GCC_ALIAS_H 23 24extern HOST_WIDE_INT new_alias_set (void); 25extern HOST_WIDE_INT get_varargs_alias_set (void); 26extern HOST_WIDE_INT get_frame_alias_set (void); 27extern bool component_uses_parent_alias_set (tree); 28 29/* This alias set can be used to force a memory to conflict with all 30 other memories, creating a barrier across which no memory reference 31 can move. Note that there are other legacy ways to create such 32 memory barriers, including an address of SCRATCH. */ 33#define ALIAS_SET_MEMORY_BARRIER ((HOST_WIDE_INT) -1) 34 35#endif /* GCC_ALIAS_H */ 36