1  /* { dg-do compile } */
       2  /* { dg-options "-mprefetchwt1 -O2" } */
       3  /* { dg-final { scan-assembler "\[ \\t\]+prefetchwt1\[ \\t\]+" } } */
       4  
       5  #include <x86intrin.h>
       6  
       7  void *p;
       8  
       9  void extern
      10  prefetchw__test (void)
      11  {
      12      _mm_prefetch (p, _MM_HINT_ET1);
      13  }
      14