I would classify these as "obvious" but please make sure they go in
before the poison patch ;-)
> And this will be needed to make those ports do what was intended:
>
> * config/rl78/rl78.h: Replace SMALL_REGISTER_CLASSES with hook.
> * config/rx/rx.h: Remove SMALL_REGISTER_CLASSES.
>
> Index: config/rl78/rl78.h
> ===================================================================
> --- config/rl78/rl78.h (revision 184217)
> +++ config/rl78/rl78.h (working copy)
> @@ -258,7 +258,7 @@ enum reg_class
> { 0xff7fffff, 0x0000001f } /* All registers. */ \
> }
>
> -#define SMALL_REGISTER_CLASSES 1
> +#define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
> #define N_REG_CLASSES (int) LIM_REG_CLASSES
> #define CLASS_MAX_NREGS(CLASS, MODE) ((GET_MODE_SIZE (MODE) \
> + UNITS_PER_WORD - 1) \
