1 /* PR rtl-optimization/49390 */
2
3 struct S { unsigned int s1; unsigned int s2; };
4 struct T { unsigned int t1; struct S t2; };
5 struct U { unsigned short u1; unsigned short u2; };
6 struct V { struct U v1; struct T v2; };
7 struct S a;
8 char *b;
9 union { char b[64]; struct V v; } u;
10 volatile int v;
11 extern void abort (void);
12
13 __attribute__((noinline, noclone)) void
foo(int x,void * y,unsigned int z,unsigned int w)14 foo (int x, void *y, unsigned int z, unsigned int w)
15 {
16 if (x != 4 || y != (void *) &u.v.v2)
17 abort ();
18 v = z + w;
19 v = 16384;
20 }
21
22 __attribute__((noinline, noclone)) void
bar(struct S x)23 bar (struct S x)
24 {
25 v = x.s1;
26 v = x.s2;
27 }
28
29 __attribute__((noinline, noclone)) int
baz(struct S * x)30 baz (struct S *x)
31 {
32 v = x->s1;
33 v = x->s2;
34 v = 0;
35 return v + 1;
36 }
37
38 __attribute__((noinline, noclone)) void
test(struct S * c)39 test (struct S *c)
40 {
41 struct T *d;
42 struct S e = a;
43 unsigned int f, g;
44 if (c == 0)
45 c = &e;
46 else
47 {
48 if (c->s2 % 8192 <= 15 || (8192 - c->s2 % 8192) <= 31)
49 foo (1, 0, c->s1, c->s2);
50 }
51 if (!baz (c))
52 return;
53 g = (((struct U *) b)->u2 & 2) ? 32 : __builtin_offsetof (struct V, v2);
54 f = c->s2 % 8192;
55 if (f == 0)
56 {
57 e.s2 += g;
58 f = g;
59 }
60 else if (f < g)
61 {
62 foo (2, 0, c->s1, c->s2);
63 return;
64 }
65 if ((((struct U *) b)->u2 & 1) && f == g)
66 {
67 bar (*c);
68 foo (3, 0, c->s1, c->s2);
69 return;
70 }
71 d = (struct T *) (b + c->s2 % 8192);
72 if (d->t2.s1 >= c->s1 && (d->t2.s1 != c->s1 || d->t2.s2 >= c->s2))
73 foo (4, d, c->s1, c->s2);
74 return;
75 }
76
77 int
main()78 main ()
79 {
80 struct S *c = 0;
81 asm ("" : "+r" (c) : "r" (&a));
82 u.v.v2.t2.s1 = 8192;
83 b = u.b;
84 test (c);
85 if (v != 16384)
86 abort ();
87 return 0;
88 }
89