gcc-4.9/gcc/testsuite/gcc.target/i386/bmi2-check.h


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#include <stdio.h>
#include <stdlib.h>

#include "cpuid.h"

static void bmi2_test (void);

static void
__attribute__ ((noinline))
do_test (void)
{
  bmi2_test ();
}

int
main ()
{
  unsigned int eax, ebx, ecx, edx;

  if (__get_cpuid_max (0, NULL) < 7)
    return 0;

  __cpuid_count (7, 0,  eax, ebx, ecx, edx);

  /* Run BMI2 test only if host has BMI2 support.  */
  if (ebx & bit_BMI2)
    {
      do_test ();
#ifdef DEBUG
      printf ("PASSED\n");
#endif
    }
#ifdef DEBUG
  else
    printf ("SKIPPED\n");
#endif

  return 0;
}