1/* { dg-do compile } */ 2/* { dg-options "-O2" } */ 3/* { dg-final { scan-assembler-not "builtin_bswap" } } */ 4 5long foo (long a) 6{ 7 long b; 8 9#if __LP64__ 10 b = __builtin_bswap64 (a); 11#else 12 b = __builtin_bswap32 (a); 13#endif 14 15 return b; 16} 17