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/* PR middle-end/36106 */

/* { dg-options "-O2" } */

/* { dg-options "-O2 -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;

}