int aarch64_fpconst_pow_of_2 (rtx);
machine_mode aarch64_hard_regno_caller_save_mode (unsigned, unsigned,
machine_mode);
-int aarch64_hard_regno_nregs (unsigned, machine_mode);
int aarch64_uxt_size (int, HOST_WIDE_INT);
int aarch64_vec_fpconst_pow_of_2 (rtx);
rtx aarch64_eh_return_handler_rtx (void);