1 | /* Calculate (post)dominators header file. |
2 | Copyright (C) 2014-2023 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 |
7 | under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 3, or (at your option) |
9 | any later version. |
10 | |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
14 | License 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_DOMINANCE_H |
21 | #define GCC_DOMINANCE_H |
22 | |
23 | enum cdi_direction |
24 | { |
25 | CDI_DOMINATORS = 1, |
26 | CDI_POST_DOMINATORS = 2 |
27 | }; |
28 | |
29 | /* State of dominance information. */ |
30 | |
31 | enum dom_state |
32 | { |
33 | DOM_NONE, /* Not computed at all. */ |
34 | DOM_NO_FAST_QUERY, /* The data is OK, but the fast query data are not usable. */ |
35 | DOM_OK /* Everything is ok. */ |
36 | }; |
37 | |
38 | extern void calculate_dominance_info (enum cdi_direction, bool = true); |
39 | extern void calculate_dominance_info_for_region (enum cdi_direction, |
40 | vec<basic_block>); |
41 | extern void free_dominance_info (function *, enum cdi_direction); |
42 | extern void free_dominance_info (enum cdi_direction); |
43 | extern void free_dominance_info_for_region (function *, |
44 | enum cdi_direction, |
45 | vec<basic_block>); |
46 | extern basic_block get_immediate_dominator (enum cdi_direction, basic_block); |
47 | extern void set_immediate_dominator (enum cdi_direction, basic_block, |
48 | basic_block); |
49 | extern auto_vec<basic_block> get_dominated_by (enum cdi_direction, basic_block); |
50 | extern auto_vec<basic_block> get_dominated_by_region (enum cdi_direction, |
51 | basic_block *, |
52 | unsigned); |
53 | extern auto_vec<basic_block> get_dominated_to_depth (enum cdi_direction, |
54 | basic_block, int); |
55 | extern auto_vec<basic_block> get_all_dominated_blocks (enum cdi_direction, |
56 | basic_block); |
57 | extern void redirect_immediate_dominators (enum cdi_direction, basic_block, |
58 | basic_block); |
59 | extern basic_block nearest_common_dominator (enum cdi_direction, |
60 | basic_block, basic_block); |
61 | extern basic_block nearest_common_dominator_for_set (enum cdi_direction, |
62 | bitmap); |
63 | extern bool dominated_by_p (enum cdi_direction, const_basic_block, |
64 | const_basic_block); |
65 | unsigned bb_dom_dfs_in (enum cdi_direction, basic_block); |
66 | unsigned bb_dom_dfs_out (enum cdi_direction, basic_block); |
67 | extern void verify_dominators (enum cdi_direction); |
68 | |
69 | /* Verify invariants of computed dominance information, if internal consistency |
70 | checks are enabled. */ |
71 | |
72 | inline void |
73 | checking_verify_dominators (cdi_direction dir) |
74 | { |
75 | if (flag_checking) |
76 | verify_dominators (dir); |
77 | } |
78 | |
79 | basic_block recompute_dominator (enum cdi_direction, basic_block); |
80 | extern void iterate_fix_dominators (enum cdi_direction, |
81 | vec<basic_block> &, bool); |
82 | extern void add_to_dominance_info (enum cdi_direction, basic_block); |
83 | extern void delete_from_dominance_info (enum cdi_direction, basic_block); |
84 | extern basic_block first_dom_son (enum cdi_direction, basic_block); |
85 | extern basic_block next_dom_son (enum cdi_direction, basic_block); |
86 | extern enum dom_state dom_info_state (function *, enum cdi_direction); |
87 | extern enum dom_state dom_info_state (enum cdi_direction); |
88 | extern void set_dom_info_availability (enum cdi_direction, enum dom_state); |
89 | extern bool dom_info_available_p (function *, enum cdi_direction); |
90 | extern bool dom_info_available_p (enum cdi_direction); |
91 | |
92 | |
93 | |
94 | #endif /* GCC_DOMINANCE_H */ |
95 | |