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comparison gcc/testsuite/gcc.dg/sibcall-7.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* Simple check that tail recursive call optimization is also
2 controlled by -foptimize-sibling-calls.
3
4 Copyright (C) 2006 Free Software Foundation Inc.
5 Original test by Hans-Peter Nilsson <hp@bitrange.com> */
6
7 /* On IA64 the call frame is allocated on the register stack, not the
8 normal stack. */
9
10 /* { dg-do run { target { ! "ia64-*-*" } } } */
11 /* { dg-options "-O2 -fno-optimize-sibling-calls" } */
12
13
14 extern void abort (void);
15
16 extern void recurser_void (int);
17 extern void track (int);
18
19 int main (void)
20 {
21 recurser_void (0);
22 return 0;
23 }
24
25 void recurser_void (int n)
26 {
27 if (n == 0 || n == 7)
28 track (n);
29
30 if (n == 10)
31 return;
32
33 recurser_void (n + 1);
34 }
35
36 void *trackpoint;
37
38 void track (int n)
39 {
40 char stackpos[1];
41
42 if (n == 0)
43 trackpoint = stackpos;
44 else if (n != 7 || trackpoint == stackpos)
45 abort ();
46 }