2001-01-22  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

        * rs6000.h (INIT_EXPANDERS): Delete.
        (RETURN_ADDR_RTX): Call rs6000_return_addr().
        * rs6000.c (rs6000_override_options): Call *_machine_status from
        here...
        (rs6000_init_expanders): ...instead of here. Delete.
        (rs6000_mark_machine_status): New function.
        (rs6000_init_machine_status): Use xcalloc.
        (rs6000_return_addr): Generate RTX for the return address.
        (rs6000_ra_ever_killed): New, check if LR was ever destroyed.
        (rs6000_stack_info): Use it.

From-SVN: r39188