1 /* Exported functions from alias.c 2 Copyright (C) 2004-2018 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 3, 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 COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_ALIAS_H 21 #define GCC_ALIAS_H 22 23 extern alias_set_type new_alias_set (void); 24 extern alias_set_type get_alias_set (tree); 25 extern alias_set_type get_deref_alias_set (tree); 26 extern alias_set_type get_varargs_alias_set (void); 27 extern alias_set_type get_frame_alias_set (void); 28 extern tree component_uses_parent_alias_set_from (const_tree); 29 extern bool alias_set_subset_of (alias_set_type, alias_set_type); 30 extern void record_alias_subset (alias_set_type, alias_set_type); 31 extern void record_component_aliases (tree); 32 extern int alias_sets_conflict_p (alias_set_type, alias_set_type); 33 extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type); 34 extern int objects_must_conflict_p (tree, tree); 35 extern int nonoverlapping_memrefs_p (const_rtx, const_rtx, bool); 36 extern void dump_alias_stats_in_alias_c (FILE *s); 37 tree reference_alias_ptr_type (tree); 38 bool alias_ptr_types_compatible_p (tree, tree); 39 int compare_base_decls (tree, tree); 40 41 /* This alias set can be used to force a memory to conflict with all 42 other memories, creating a barrier across which no memory reference 43 can move. Note that there are other legacy ways to create such 44 memory barriers, including an address of SCRATCH. */ 45 #define ALIAS_SET_MEMORY_BARRIER ((alias_set_type) -1) 46 47 #endif /* GCC_ALIAS_H */ 48