1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -mclzero" } */
       3  
       4  /* Verify that they work in both 32bit and 64bit.  */
       5  
       6  #include <x86intrin.h>
       7  
       8  void
       9  foo (void *k)
      10  {
      11     _mm_clzero (k);
      12  }
      13