Mercurial > hg > CbC > CbC_gcc
comparison gcc/alias.h @ 0:a06113de4d67
first commit
| author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 17 Jul 2009 14:47:48 +0900 |
| parents | |
| children | 77e2b8dfacca |
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| -1:000000000000 | 0:a06113de4d67 |
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| 1 /* Exported functions from alias.c | |
| 2 Copyright (C) 2004, 2007, 2008, 2009 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 #include "coretypes.h" | |
| 24 | |
| 25 /* The type of an alias set. Code currently assumes that variables of | |
| 26 this type can take the values 0 (the alias set which aliases | |
| 27 everything) and -1 (sometimes indicating that the alias set is | |
| 28 unknown, sometimes indicating a memory barrier) and -2 (indicating | |
| 29 that the alias set should be set to a unique value but has not been | |
| 30 set yet). */ | |
| 31 typedef int alias_set_type; | |
| 32 | |
| 33 extern alias_set_type new_alias_set (void); | |
| 34 extern alias_set_type get_alias_set (tree); | |
| 35 extern alias_set_type get_varargs_alias_set (void); | |
| 36 extern alias_set_type get_frame_alias_set (void); | |
| 37 extern bool component_uses_parent_alias_set (const_tree); | |
| 38 extern bool alias_set_subset_of (alias_set_type, alias_set_type); | |
| 39 extern void record_alias_subset (alias_set_type, alias_set_type); | |
| 40 extern void record_component_aliases (tree); | |
| 41 extern int alias_sets_conflict_p (alias_set_type, alias_set_type); | |
| 42 extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type); | |
| 43 extern int objects_must_conflict_p (tree, tree); | |
| 44 extern int nonoverlapping_memrefs_p (const_rtx, const_rtx); | |
| 45 extern bool insn_alias_sets_conflict_p (rtx, rtx); | |
| 46 | |
| 47 /* This alias set can be used to force a memory to conflict with all | |
| 48 other memories, creating a barrier across which no memory reference | |
| 49 can move. Note that there are other legacy ways to create such | |
| 50 memory barriers, including an address of SCRATCH. */ | |
| 51 #define ALIAS_SET_MEMORY_BARRIER ((alias_set_type) -1) | |
| 52 | |
| 53 #endif /* GCC_ALIAS_H */ |