Hi Jan-Benedict.
../../../gcc/gcc/config/rl78/rl78.c:390:14: error: enumeration value ‘MUL_RL78’ not handled in switch [-Werror=switch] switch (rl78_mul_type)
../../../gcc/gcc/config/rl78/rl78.c:4649:34: error: unused parameter ‘x’ [-Werror=unused-parameter] rl78_preferred_reload_class (rtx x, reg_class_t rclass)
These are now fixed. Cheers Nick