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 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