1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -mserialize" } */
       3  /* { dg-final { scan-assembler-times "\tserialize"  1 } } */
       4  
       5  #include <x86intrin.h>
       6  
       7  void
       8  foo (void)
       9  {
      10     _serialize ();
      11  }