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369451ec JH |
1 | /* IPA reference lists. |
2 | Copyright (C) 2010 | |
3 | Free Software Foundation, Inc. | |
4 | Contributed by Jan Hubicka | |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | struct cgraph_node; | |
23 | struct varpool_node; | |
5932a4d4 JH |
24 | union symtab_node_def; |
25 | typedef union symtab_node_def *symtab_node; | |
26 | typedef const union symtab_node_def *const_symtab_node; | |
27 | ||
369451ec JH |
28 | |
29 | /* How the reference is done. */ | |
30 | enum GTY(()) ipa_ref_use | |
31 | { | |
32 | IPA_REF_LOAD, | |
33 | IPA_REF_STORE, | |
39e2db00 JH |
34 | IPA_REF_ADDR, |
35 | IPA_REF_ALIAS | |
369451ec JH |
36 | }; |
37 | ||
369451ec JH |
38 | /* Record of reference in callgraph or varpool. */ |
39 | struct GTY(()) ipa_ref | |
40 | { | |
5932a4d4 JH |
41 | symtab_node referring; |
42 | symtab_node referred; | |
369451ec | 43 | gimple stmt; |
5932a4d4 | 44 | unsigned int referred_index; |
369451ec JH |
45 | ENUM_BITFIELD (ipa_ref_use) use:2; |
46 | }; | |
47 | ||
48 | typedef struct ipa_ref ipa_ref_t; | |
49 | typedef struct ipa_ref *ipa_ref_ptr; | |
50 | ||
51 | DEF_VEC_O(ipa_ref_t); | |
52 | DEF_VEC_ALLOC_O(ipa_ref_t,gc); | |
53 | DEF_VEC_P(ipa_ref_ptr); | |
54 | DEF_VEC_ALLOC_P(ipa_ref_ptr,heap); | |
55 | ||
56 | /* List of references. This is stored in both callgraph and varpool nodes. */ | |
57 | struct GTY(()) ipa_ref_list | |
58 | { | |
59 | /* Store actual references in references vector. */ | |
60 | VEC(ipa_ref_t,gc) *references; | |
61 | /* Refering is vector of pointers to references. It must not live in GGC space | |
62 | or GGC will try to mark middle of references vectors. */ | |
5932a4d4 | 63 | VEC(ipa_ref_ptr,heap) * GTY((skip)) referring; |
369451ec JH |
64 | }; |
65 | ||
5932a4d4 JH |
66 | struct ipa_ref * ipa_record_reference (symtab_node, |
67 | symtab_node, | |
369451ec JH |
68 | enum ipa_ref_use, gimple); |
69 | ||
70 | void ipa_remove_reference (struct ipa_ref *); | |
71 | void ipa_remove_all_references (struct ipa_ref_list *); | |
5932a4d4 | 72 | void ipa_remove_all_referring (struct ipa_ref_list *); |
369451ec | 73 | void ipa_dump_references (FILE *, struct ipa_ref_list *); |
5932a4d4 JH |
74 | void ipa_dump_referring (FILE *, struct ipa_ref_list *); |
75 | void ipa_clone_references (symtab_node, struct ipa_ref_list *); | |
76 | void ipa_clone_referring (symtab_node, struct ipa_ref_list *); | |
f10ea640 | 77 | bool ipa_ref_cannot_lead_to_return (struct ipa_ref *); |
39e2db00 | 78 | bool ipa_ref_has_aliases_p (struct ipa_ref_list *); |