|
111
|
1 /* PR target/55940 */
|
|
|
2 /* { dg-do run } */
|
|
|
3 /* { dg-options "-Os" } */
|
|
|
4 /* { dg-additional-options "-mpreferred-stack-boundary=2" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
|
|
|
5
|
|
|
6 struct S { int s; unsigned long t; };
|
|
|
7
|
|
|
8 __attribute__ ((noinline, noclone)) unsigned long long
|
|
|
9 bar (struct S *x, unsigned long y)
|
|
|
10 {
|
|
|
11 asm volatile ("" : : "r" (x), "r" (y) : "memory");
|
|
|
12 return x->s + y;
|
|
|
13 }
|
|
|
14
|
|
|
15 __attribute__ ((noinline, noclone)) unsigned long long
|
|
|
16 foo (struct S *x, unsigned long y)
|
|
|
17 {
|
|
|
18 unsigned long a;
|
|
|
19 if (__builtin_expect (((__UINTPTR_TYPE__) (x) + 0x1000U < 0x2000U), 0))
|
|
|
20 return ~0ULL;
|
|
|
21 if (__builtin_expect (x->s <= 0 || x->s > 9, 0))
|
|
|
22 return ~0ULL;
|
|
|
23 a = x->t >> 12;
|
|
|
24 if (y == a)
|
|
|
25 return ~0ULL;
|
|
|
26 if (x->s == 3)
|
|
|
27 return x->t + y * 4096;
|
|
|
28 return bar (x, y);
|
|
|
29 }
|
|
|
30
|
|
|
31 int va, vb, vc, vd;
|
|
|
32
|
|
|
33 int
|
|
|
34 main ()
|
|
|
35 {
|
|
|
36 struct S s;
|
|
|
37 asm volatile ("" : : : "memory");
|
|
|
38 int a = va, b = vb, c = vc, d = vd;
|
|
|
39 asm volatile ("" : : : "memory");
|
|
|
40 int i;
|
|
|
41 for (i = 0; i < 64; i++)
|
|
|
42 if (foo ((struct S *) 0, 0) != ~0ULL)
|
|
|
43 __builtin_abort ();
|
|
|
44 s.s = 3;
|
|
|
45 s.t = 2 << 12;
|
|
|
46 if (foo (&s, 2) != ~0ULL)
|
|
|
47 __builtin_abort ();
|
|
|
48 if (foo (&s, 3) != (2 << 12) + 3 * 4096)
|
|
|
49 __builtin_abort ();
|
|
|
50 asm volatile ("" : : : "memory");
|
|
|
51 va = a; vb = b; vc = c; vd = d;
|
|
|
52 asm volatile ("" : : : "memory");
|
|
|
53 return 0;
|
|
|
54 }
|
