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Diffstat (limited to 'gcc-4.9/gcc/alias.h')
| -rw-r--r-- | gcc-4.9/gcc/alias.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/alias.h b/gcc-4.9/gcc/alias.h new file mode 100644 index 000000000..58fda9d0e --- /dev/null +++ b/gcc-4.9/gcc/alias.h @@ -0,0 +1,53 @@ +/* Exported functions from alias.c + Copyright (C) 2004-2014 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 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_ALIAS_H +#define GCC_ALIAS_H + +/* The type of an alias set. Code currently assumes that variables of + this type can take the values 0 (the alias set which aliases + everything) and -1 (sometimes indicating that the alias set is + unknown, sometimes indicating a memory barrier) and -2 (indicating + that the alias set should be set to a unique value but has not been + set yet). */ +typedef int alias_set_type; + +extern alias_set_type new_alias_set (void); +extern alias_set_type get_alias_set (tree); +extern alias_set_type get_deref_alias_set (tree); +extern alias_set_type get_varargs_alias_set (void); +extern alias_set_type get_frame_alias_set (void); +extern tree component_uses_parent_alias_set_from (const_tree); +extern bool alias_set_subset_of (alias_set_type, alias_set_type); +extern void record_alias_subset (alias_set_type, alias_set_type); +extern void record_component_aliases (tree); +extern int alias_sets_conflict_p (alias_set_type, alias_set_type); +extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type); +extern int objects_must_conflict_p (tree, tree); +extern int nonoverlapping_memrefs_p (const_rtx, const_rtx, bool); +tree reference_alias_ptr_type (tree); +bool alias_ptr_types_compatible_p (tree, tree); + +/* 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 ((alias_set_type) -1) + +#endif /* GCC_ALIAS_H */ |