1/* { dg-do run { target *-*-linux* *-*-gnu* } } */
2/* { dg-require-effective-target ia32 } */
3/* { dg-options "-O2 -fomit-frame-pointer" } */
4
5extern void abort (void);
6extern void exit (int);
7
8struct s {
9  struct { int a; } a;
10  int b;
11  struct { struct { int a; } a; struct t { struct t *a, *b; } b; } c;
12};
13
14int bar(int (*fn)(void *), void *arg, unsigned long flags)
15{
16  return 0;
17}
18
19int baz(void *x)
20{
21  return 0;
22}
23
24void do_check (struct s *) asm ("do_check") __attribute__((regparm(1)));
25
26void __attribute__((regparm(1))) do_check(struct s *x)
27{
28  if (x->a.a || x->b || x->c.a.a)
29    abort();
30  if (x->c.b.a != &x->c.b || x->c.b.b != &x->c.b)
31    abort();
32}
33
34#define NT "\n\t"
35
36asm ("\n"
37"___checkme:"
38NT	"pushl %eax; pushl %ebx; pushl %ecx; pushl %edx; pushl %esi; pushl %edi"
39
40NT	"pushl $0; pushl $0; pushl $0; pushl $0; pushl $0"
41NT	"pushl $0; pushl $0; pushl $0; pushl $0; pushl $0"
42
43NT	"movl %ecx, %eax"
44NT	"call do_check"
45
46NT	"popl %eax; popl %eax; popl %eax; popl %eax; popl %eax"
47NT	"popl %eax; popl %eax; popl %eax; popl %eax; popl %eax"
48
49NT	"popl %edi; popl %esi; popl %edx; popl %ecx; popl %ebx;	popl %eax"
50NT	"ret"
51);
52
53extern inline void do_asm(struct s * x)
54{
55  asm volatile("call ___checkme" : : "c" (x) : "memory");
56}
57
58int foo(void)
59{
60  struct s x = { { 0 }, 0, { { 0 }, { &x.c.b, &x.c.b } } };
61  bar(baz, &x, 1);
62  do_asm(&x);
63  bar(baz, &x, 1);
64  do_asm(&x);
65  return 0;
66}
67
68int main()
69{
70  foo();
71  exit(0);
72}
73