1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  /* { dg-final { scan-assembler-not "bswap\[ \t\]" } } */
       4  
       5  short foo (short x)
       6  {
       7    return __builtin_bswap16 (x);
       8  }