blob: b834b0b159d324219fa2ef38ae1fe4be2f206a90 [file] [log] [blame]
/* { dg-do compile } */
/* { dg-require-effective-target stdint_types } */
/* { dg-options "-O2" } */
/* { dg-options "-O2 -mstrict-align" { target { powerpc*-*-linux* powerpc*-*-elf* } } } */
#include <stdint.h>
typedef struct {
int64_t counter;
} atomic64_t;
struct buffer_page {
void *a, *b;
atomic64_t entries;
};
static __inline__ __attribute__((always_inline)) int64_t
atomic64_read(const atomic64_t *v)
{
int64_t t;
__asm__ __volatile__("" : "=r"(t) : "m"(v->counter));
return t;
}
int rb_remove_pages(void *p)
{
struct buffer_page *blah = (void *)((intptr_t) p & -4);
return atomic64_read(&blah->entries);
}