gcc/libgomp/testsuite/libgomp.c/atomic-5.c

41 lines
635 B
C

/* PR middle-end/36106 */
/* { dg-additional-options "-mcx16" { target { { i?86-*-* x86_64-*-* } && lp64 } } } */
#ifdef __x86_64__
# include "cpuid.h"
#endif
extern void abort (void);
int __attribute__((noinline))
do_test (void)
{
long double d = .0L;
int i;
#pragma omp parallel for shared (d)
for (i = 0; i < 10; i++)
#pragma omp atomic
d += 1.0L;
if (d != 10.0L)
abort ();
return 0;
}
int
main (void)
{
#ifdef __x86_64__
unsigned int eax, ebx, ecx, edx;
if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
return 0;
if (!(ecx & bit_CMPXCHG16B))
return 0;
#endif
do_test ();
return 0;
}