gcc/gcc/testsuite/gcc.dg/pr46685.c

41 lines
689 B
C

/* { dg-do compile } */
/* { dg-require-effective-target freorder } */
/* { dg-require-effective-target fpic } */
/* { dg-options "-O2 -freorder-blocks-and-partition -fpic" } */
__attribute__((noinline, noclone))
void bar (void *x)
{
asm volatile ("" : : "r" (x) : "memory");
}
__attribute__((noinline, noclone))
void baz (void)
{
asm volatile ("" : : : "memory");
}
__attribute__((noinline, noclone))
int foo (int x)
{
__label__ lab;
if (__builtin_expect (x, 0))
{
lab:
baz ();
return 2;
}
bar (&&lab);
return 1;
}
int
main (void)
{
int x, i;
asm volatile ("" : "=r" (x) : "0" (0));
for (i = 0; i < 1000000; i++)
foo (x);
return 0;
}