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/* { dg-do run { target { lzcnt && { ! ia32 } } } } */

/* { dg-options "-O2 -mlzcnt -fno-inline" } */

#include <x86intrin.h>

#include "lzcnt-check.h"

long long calc_lzcnt_u64 (long long src)

{

  int i;

  int res = 0;

  while ((res < 64) && (((src >> (63 - res)) & 1) == 0))

    ++res;

  return res;

}

static void

lzcnt_test ()

{

  unsigned i;

  long long src = 0xce7ace0ce7ace0;

  long long res, res_ref;

  for (i=0; i<5; ++i) {

    src = src >> i;

    res_ref = calc_lzcnt_u64 (src);

    res = __lzcnt64 (src);

    if (res != res_ref)

      abort();

  }

}