1 /* Exported functions from alias.c 2 Copyright (C) 2004-2020 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 ends_tbaa_access_path_p (const_tree); 30 extern bool alias_set_subset_of (alias_set_type, alias_set_type); 31 extern void record_alias_subset (alias_set_type, alias_set_type); 32 extern void record_component_aliases (tree); 33 extern int alias_sets_conflict_p (alias_set_type, alias_set_type); 34 extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type); 35 extern int objects_must_conflict_p (tree, tree); 36 extern int nonoverlapping_memrefs_p (const_rtx, const_rtx, bool); 37 extern void dump_alias_stats_in_alias_c (FILE *s); 38 tree reference_alias_ptr_type (tree); 39 bool alias_ptr_types_compatible_p (tree, tree); 40 int compare_base_decls (tree, tree); 41 bool refs_same_for_tbaa_p (tree, tree); 42 43 /* This alias set can be used to force a memory to conflict with all 44 other memories, creating a barrier across which no memory reference 45 can move. Note that there are other legacy ways to create such 46 memory barriers, including an address of SCRATCH. */ 47 #define ALIAS_SET_MEMORY_BARRIER ((alias_set_type) -1) 48 49 #endif /* GCC_ALIAS_H */ 50