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
139
140
141
142
143
144
145
146
147
148
149
|
/* Iterator for walking a chain of inlining locations.
Copyright (C) 2022-2025 Free Software Foundation, Inc.
Contributed by David Malcolm <dmalcolm@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 GCC_ANALYZER_INLINING_ITERATOR_H
#define GCC_ANALYZER_INLINING_ITERATOR_H
/* Iterator for walking a chain of inlining locations.
The fndecls and locations will be traversed from innermost to outermost.
For example, given:
inline void inner (void)
{
...LOCATION HERE...
}
void outer (void)
{
inner (); <-- CALLSITE
}
then the fndecl will be "inner" on the initial iteration, and "outer" on
the second (final) iteration.
Compare with lhd_print_error_function, cp_print_error_function,
and optrecord_json_writer::inlining_chain_to_json. */
class inlining_iterator
{
public:
inlining_iterator (location_t loc)
: m_abstract_origin (LOCATION_BLOCK (loc)),
m_callsite (UNKNOWN_LOCATION), m_fndecl (NULL),
m_next_abstract_origin (NULL)
{
prepare_iteration ();
}
bool done_p () const { return m_abstract_origin == NULL; }
void next ()
{
m_abstract_origin = m_next_abstract_origin;
prepare_iteration ();
}
tree get_fndecl () const { return m_fndecl; }
location_t get_callsite () const { return m_callsite; }
tree get_block () const { return m_abstract_origin; }
private:
void prepare_iteration ()
{
if (done_p ())
return;
tree block = m_abstract_origin;
m_callsite = BLOCK_SOURCE_LOCATION (block);
m_fndecl = NULL;
block = BLOCK_SUPERCONTEXT (block);
while (block && TREE_CODE (block) == BLOCK
&& BLOCK_ABSTRACT_ORIGIN (block))
{
tree ao = BLOCK_ABSTRACT_ORIGIN (block);
if (TREE_CODE (ao) == FUNCTION_DECL)
{
m_fndecl = ao;
break;
}
else if (TREE_CODE (ao) != BLOCK)
break;
block = BLOCK_SUPERCONTEXT (block);
}
if (m_fndecl)
m_next_abstract_origin = block;
else
{
while (block && TREE_CODE (block) == BLOCK)
block = BLOCK_SUPERCONTEXT (block);
if (block && TREE_CODE (block) == FUNCTION_DECL)
m_fndecl = block;
m_next_abstract_origin = NULL;
}
}
tree m_abstract_origin;
location_t m_callsite;
tree m_fndecl;
tree m_next_abstract_origin;
};
/* A class for fixing up fndecls and stack depths in checker_event, based
on inlining records.
The early inliner runs before the analyzer, which can lead to confusing
output.
Tne base fndecl and depth within a checker_event are from call strings
in program_points, which reflect the call strings after inlining.
This class lets us offset the depth and fix up the reported fndecl and
stack depth to better reflect the user's original code. */
class inlining_info
{
public:
inlining_info (location_t loc)
{
inlining_iterator iter (loc);
m_inner_fndecl = iter.get_fndecl ();
int num_frames = 0;
while (!iter.done_p ())
{
m_outer_fndecl = iter.get_fndecl ();
num_frames++;
iter.next ();
}
if (num_frames > 1)
m_extra_frames = num_frames - 1;
else
m_extra_frames = 0;
}
tree get_inner_fndecl () const { return m_inner_fndecl; }
int get_extra_frames () const { return m_extra_frames; }
private:
tree m_outer_fndecl;
tree m_inner_fndecl;
int m_extra_frames;
};
#endif /* GCC_ANALYZER_INLINING_ITERATOR_H */
|
