* config/alpha/alpha.c (struct machine_function): Add gp_save_rtx.

        (alpha_gp_save_rtx): Use assign_stack_local instead of
        gen_mem_addressof.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@84015 138bc75d-0d04-0410-961f-82ee72b054a4