On Fri, Jan 31, 2025 at 2:02 PM kernel test robot <lkp@xxxxxxxxx> wrote: > > 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: loongarch-randconfig-001-20250131 (https://download.01.org/0day-ci/archive/20250131/202501312051.0vJPrrIL-lkp@xxxxxxxxx/config) > compiler: loongarch64-linux-gcc (GCC) 14.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501312051.0vJPrrIL-lkp@xxxxxxxxx/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@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202501312051.0vJPrrIL-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > loongarch64-linux-ld: lib/bch.o: in function `solve_linear_system.constprop.0.isra.0': > >> bch.c:(.text+0xd18): undefined reference to `__paritydi2' Hm, my config cross-compiles to: bstrpick.d $r4,$r4,31,0 vrepli.d $vr0,0 vinsgr2vr.d $vr0,$r4,0 vpcnt.d $vr0,$vr0 vpickve2gr.du $r4,$vr0,0 andi $r4,$r4,1 jr $r1 It looks that __has_builtin() does not mean that there will be no call to a library function?! Uros.
