1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/* Data and Control Flow Analysis for Trees.
Copyright (C) 2001-2019 Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
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 _TREE_CFG_H
#define _TREE_CFG_H
/* Location to track pending stmt for edge insertion. */
#define PENDING_STMT(e) ((e)->insns.g)
/* Garbage collection and PCH support for edge_def. */
extern void gt_ggc_mx (edge_def *e);
extern void gt_pch_nx (edge_def *e);
extern void gt_pch_nx (edge_def *e, gt_pointer_operator, void *);
extern void init_empty_tree_cfg_for_function (struct function *);
extern void init_empty_tree_cfg (void);
extern void start_recording_case_labels (void);
extern void end_recording_case_labels (void);
extern basic_block label_to_block (struct function *, tree);
extern void cleanup_dead_labels (void);
extern bool group_case_labels_stmt (gswitch *);
extern bool group_case_labels (void);
extern void replace_uses_by (tree, tree);
extern basic_block single_noncomplex_succ (basic_block bb);
extern void notice_special_calls (gcall *);
extern void clear_special_calls (void);
extern edge find_taken_edge (basic_block, tree);
extern void gimple_debug_bb (basic_block);
extern basic_block gimple_debug_bb_n (int);
extern void gimple_debug_cfg (int);
extern void gimple_dump_cfg (FILE *, dump_flags_t);
extern void dump_cfg_stats (FILE *);
extern void debug_cfg_stats (void);
extern bool computed_goto_p (gimple *);
extern bool stmt_can_make_abnormal_goto (gimple *);
extern basic_block get_abnormal_succ_dispatcher (basic_block);
extern bool is_ctrl_stmt (gimple *);
extern bool is_ctrl_altering_stmt (gimple *);
extern bool simple_goto_p (gimple *);
extern bool stmt_ends_bb_p (gimple *);
extern bool gimple_seq_unreachable_p (gimple_seq);
extern bool assert_unreachable_fallthru_edge_p (edge);
extern void delete_tree_cfg_annotations (function *);
extern gphi *get_virtual_phi (basic_block);
extern gimple *first_stmt (basic_block);
extern gimple *last_stmt (basic_block);
extern gimple *last_and_only_stmt (basic_block);
extern void verify_gimple_in_seq (gimple_seq);
extern void verify_gimple_in_cfg (struct function *, bool);
extern tree gimple_block_label (basic_block);
extern void add_phi_args_after_copy_bb (basic_block);
extern void add_phi_args_after_copy (basic_block *, unsigned, edge);
extern basic_block split_edge_bb_loc (edge);
extern bool gimple_duplicate_sese_region (edge, edge, basic_block *, unsigned,
basic_block *, bool);
extern bool gimple_duplicate_sese_tail (edge, edge, basic_block *, unsigned,
basic_block *);
extern void gather_blocks_in_sese_region (basic_block entry, basic_block exit,
vec<basic_block> *bbs_p);
extern void verify_sese (basic_block, basic_block, vec<basic_block> *);
extern bool gather_ssa_name_hash_map_from (tree const &, tree const &, void *);
extern void fold_loop_internal_call (gimple *, tree);
extern basic_block move_sese_region_to_fn (struct function *, basic_block,
basic_block, tree);
extern void dump_function_to_file (tree, FILE *, dump_flags_t);
extern void debug_function (tree, dump_flags_t);
extern void print_loops_bb (FILE *, basic_block, int, int);
extern void print_loops (FILE *, int);
extern void debug (class loop &ref);
extern void debug (class loop *ptr);
extern void debug_verbose (class loop &ref);
extern void debug_verbose (class loop *ptr);
extern void debug_loops (int);
extern void debug_loop (class loop *, int);
extern void debug_loop_num (unsigned, int);
extern void remove_edge_and_dominated_blocks (edge);
extern bool gimple_purge_dead_eh_edges (basic_block);
extern bool gimple_purge_all_dead_eh_edges (const_bitmap);
extern bool gimple_purge_dead_abnormal_call_edges (basic_block);
extern bool gimple_purge_all_dead_abnormal_call_edges (const_bitmap);
extern tree gimplify_build3 (gimple_stmt_iterator *, enum tree_code,
tree, tree, tree, tree);
extern tree gimplify_build2 (gimple_stmt_iterator *, enum tree_code,
tree, tree, tree);
extern tree gimplify_build1 (gimple_stmt_iterator *, enum tree_code,
tree, tree);
extern void extract_true_false_edges_from_block (basic_block, edge *, edge *);
extern tree find_case_label_for_value (const gswitch *switch_stmt, tree val);
extern edge find_taken_edge_switch_expr (const gswitch *switch_stmt, tree val);
extern unsigned int execute_fixup_cfg (void);
extern unsigned int split_critical_edges (bool for_edge_insertion_p = false);
extern basic_block insert_cond_bb (basic_block, gimple *, gimple *,
profile_probability);
extern bool gimple_find_sub_bbs (gimple_seq, gimple_stmt_iterator *);
extern bool extract_true_false_controlled_edges (basic_block, basic_block,
edge *, edge *);
extern void generate_range_test (basic_block bb, tree index, tree low,
tree high, tree *lhs, tree *rhs);
extern basic_block gimple_switch_label_bb (function *, gswitch *, unsigned);
extern basic_block gimple_switch_default_bb (function *, gswitch *);
extern edge gimple_switch_edge (function *, gswitch *, unsigned);
extern edge gimple_switch_default_edge (function *, gswitch *);
/* Return true if the LHS of a call should be removed. */
inline bool
should_remove_lhs_p (tree lhs)
{
return (lhs
&& TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (lhs))) == INTEGER_CST
&& !TREE_ADDRESSABLE (TREE_TYPE (lhs)));
}
inline unsigned int
split_edges_for_insertion ()
{
return split_critical_edges (/*for_edge_insertion_p=*/true);
}
#endif /* _TREE_CFG_H */
|
