74 lines
1.0 KiB
C
74 lines
1.0 KiB
C
/* PRs target/15569, rtl-optimization/15681 */
|
|
/* { dg-do compile } */
|
|
/* { dg-options "-Os -frename-registers" } */
|
|
/* { dg-options "-mconstant-gp -Os -frename-registers" { target ia64-*-* } } */
|
|
|
|
struct S { struct S *a, *b; };
|
|
struct T { struct S e; unsigned long a; int b, c; void *d; } f;
|
|
|
|
unsigned long f1 (unsigned long);
|
|
void f2 (int, struct T *);
|
|
void *f3 (void *);
|
|
unsigned long volatile g;
|
|
|
|
static void
|
|
f4 (struct T *p)
|
|
{
|
|
f1 (f1 (((unsigned long) g - p->a) >> 20));
|
|
}
|
|
|
|
static struct T *
|
|
f5 (void)
|
|
{
|
|
struct T *g, *p;
|
|
struct T *q = 0;
|
|
for (g = p = &f; (g = p = (struct T *) (g->e.a)) != &f;)
|
|
if (p->b)
|
|
{
|
|
f4 (p);
|
|
if (p->c & 0x80000)
|
|
return p;
|
|
}
|
|
return q;
|
|
}
|
|
|
|
static void
|
|
f6 (struct T *p)
|
|
{
|
|
f2 (9, p);
|
|
}
|
|
|
|
static inline void *
|
|
f7 (struct T *t)
|
|
{
|
|
void *d;
|
|
d = t->d;
|
|
if (d)
|
|
d = f3 (d);
|
|
return d;
|
|
}
|
|
|
|
static void *
|
|
f8 (struct T *p)
|
|
{
|
|
void *d = f7 (p);
|
|
if (!d)
|
|
return 0;
|
|
f6 (p);
|
|
return d;
|
|
}
|
|
|
|
static void
|
|
f9 (void)
|
|
{
|
|
struct T *p;
|
|
p = f5 ();
|
|
f8 (p);
|
|
}
|
|
|
|
void
|
|
test (void)
|
|
{
|
|
f9 ();
|
|
}
|