[akpm-mm:mm-nonmm-unstable 52/52] lib/bch.c:317:undefined reference to `__paritydi2'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
head:   1b9f78ccbffefb107cd92e20cfccd03ff2fa9d0e
commit: 1b9f78ccbffefb107cd92e20cfccd03ff2fa9d0e [52/52] lib/bch.c: use __builtin_parity() when available
config: arm64-randconfig-002-20250131 (https://download.01.org/0day-ci/archive/20250131/202501312159.l6jNRaYy-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501312159.l6jNRaYy-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501312159.l6jNRaYy-lkp@intel.com/

All errors (new ones prefixed by >>):

   aarch64-linux-ld: lib/bch.o: in function `parity':
>> lib/bch.c:317:(.text+0x10e8): undefined reference to `__paritydi2'
>> lib/bch.c:317:(.text+0x10e8): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `__paritydi2'


vim +317 lib/bch.c

   313	
   314	static inline int parity(unsigned int x)
   315	{
   316	#if __has_builtin(__builtin_parity)
 > 317		return __builtin_parity(x);
   318	#else
   319		/*
   320		 * public domain code snippet, lifted from
   321		 * http://www-graphics.stanford.edu/~seander/bithacks.html
   322		 */
   323		x ^= x >> 1;
   324		x ^= x >> 2;
   325		x = (x & 0x11111111U) * 0x11111111U;
   326		return (x >> 28) & 1;
   327	#endif
   328	}
   329	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki