message: Add support for powerpc*
diff: asm volatile ("div %0, %0, zero" : "=r" (dummy));
  asm volatile ("" ::: "memory");
  }}
  +#elif defined(__powerpc__)
  + namespace bee { inline void cpu_relax() { asm volatile("ori 0,0,0" ::: "memory"); }}
  #else
  #error unsupport platform
  #endif
  