1 | /* Test program for profiling information collection (_mcount/gprof). |
2 | Copyright (C) 2017-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | /* This program does not use the test harness because we want tight |
20 | control over the call graph. */ |
21 | |
22 | __attribute__ ((noinline, noclone, weak)) void |
23 | f1 (void) |
24 | { |
25 | } |
26 | |
27 | __attribute__ ((noinline, noclone, weak)) void |
28 | f2 (void) |
29 | { |
30 | f1 (); |
31 | /* Prevent tail call. */ |
32 | asm volatile ("" ); |
33 | } |
34 | |
35 | __attribute__ ((noinline, noclone, weak)) void |
36 | f3 (int count) |
37 | { |
38 | for (int i = 0; i < count; ++i) |
39 | { |
40 | f1 (); |
41 | f2 (); |
42 | } |
43 | } |
44 | |
45 | int |
46 | main (void) |
47 | { |
48 | f3 (count: 1000); |
49 | return 0; |
50 | } |
51 | |