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
|
/* Test program for profiling information collection (_mcount/gprof).
Copyright (C) 2017-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sys/cdefs.h>
/* This program does not use the test harness because we want tight
control over the call graph. */
__attribute__ ((weak)) __attribute_optimization_barrier__ void
f1 (void)
{
}
__attribute__ ((weak)) __attribute_optimization_barrier__ void
f2 (void)
{
f1 ();
/* Prevent tail call. */
asm volatile ("");
}
__attribute__ ((weak)) __attribute_optimization_barrier__ void
f3 (int count)
{
for (int i = 0; i < count; ++i)
{
f1 ();
f2 ();
}
}
int
main (void)
{
f3 (1000);
return 0;
}
|
