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dd637013 | 1 | /* Control flow graph analysis header file. |
a5544970 | 2 | Copyright (C) 2014-2019 Free Software Foundation, Inc. |
dd637013 AM |
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 | ||
21 | #ifndef GCC_CFGANAL_H | |
22 | #define GCC_CFGANAL_H | |
23 | ||
24 | /* This structure maintains an edge list vector. */ | |
25 | /* FIXME: Make this a vec<edge>. */ | |
26 | struct edge_list | |
27 | { | |
28 | int num_edges; | |
29 | edge *index_to_edge; | |
30 | }; | |
31 | ||
32 | ||
33 | /* Class to compute and manage control dependences on an edge-list. */ | |
34 | class control_dependences | |
35 | { | |
36 | public: | |
30fd2977 | 37 | control_dependences (); |
dd637013 AM |
38 | ~control_dependences (); |
39 | bitmap get_edges_dependent_on (int); | |
30fd2977 RB |
40 | basic_block get_edge_src (int); |
41 | basic_block get_edge_dest (int); | |
dd637013 AM |
42 | |
43 | private: | |
44 | void set_control_dependence_map_bit (basic_block, int); | |
45 | void clear_control_dependence_bitmap (basic_block); | |
46 | void find_control_dependence (int); | |
47 | vec<bitmap> control_dependence_map; | |
30fd2977 | 48 | vec<std::pair<int, int> > m_el; |
dd637013 AM |
49 | }; |
50 | ||
51 | extern bool mark_dfs_back_edges (void); | |
52 | extern void find_unreachable_blocks (void); | |
a352b710 | 53 | extern void verify_no_unreachable_blocks (void); |
dd637013 AM |
54 | struct edge_list * create_edge_list (void); |
55 | void free_edge_list (struct edge_list *); | |
56 | void print_edge_list (FILE *, struct edge_list *); | |
57 | void verify_edge_list (FILE *, struct edge_list *); | |
58 | edge find_edge (basic_block, basic_block); | |
59 | int find_edge_index (struct edge_list *, basic_block, basic_block); | |
60 | extern void remove_fake_edges (void); | |
61 | extern void remove_fake_exit_edges (void); | |
62 | extern void add_noreturn_fake_exit_edges (void); | |
63 | extern void connect_infinite_loops_to_exit (void); | |
64 | extern int post_order_compute (int *, bool, bool); | |
65 | extern basic_block dfs_find_deadend (basic_block); | |
6fa95e09 | 66 | extern void inverted_post_order_compute (vec<int> *postorder, sbitmap *start_points = 0); |
dd637013 AM |
67 | extern int pre_and_rev_post_order_compute_fn (struct function *, |
68 | int *, int *, bool); | |
69 | extern int pre_and_rev_post_order_compute (int *, int *, bool); | |
78ea9abc RB |
70 | extern int rev_post_order_and_mark_dfs_back_seme (struct function *, edge, |
71 | bitmap, bool, int *); | |
dd637013 AM |
72 | extern int dfs_enumerate_from (basic_block, int, |
73 | bool (*)(const_basic_block, const void *), | |
74 | basic_block *, int, const void *); | |
75 | extern void compute_dominance_frontiers (struct bitmap_head *); | |
76 | extern bitmap compute_idf (bitmap, struct bitmap_head *); | |
77 | extern void bitmap_intersection_of_succs (sbitmap, sbitmap *, basic_block); | |
78 | extern void bitmap_intersection_of_preds (sbitmap, sbitmap *, basic_block); | |
79 | extern void bitmap_union_of_succs (sbitmap, sbitmap *, basic_block); | |
80 | extern void bitmap_union_of_preds (sbitmap, sbitmap *, basic_block); | |
81 | extern basic_block * single_pred_before_succ_order (void); | |
2965f127 JL |
82 | extern edge single_incoming_edge_ignoring_loop_edges (basic_block, bool); |
83 | extern edge single_pred_edge_ignoring_loop_edges (basic_block, bool); | |
84 | ||
dd637013 AM |
85 | |
86 | #endif /* GCC_CFGANAL_H */ |