sparc.c (eligible_for_epilogue_delay): False if current_function_calls_eh_return.

        * config/sparc/sparc.c (eligible_for_epilogue_delay): False if
        current_function_calls_eh_return.
        (output_function_epilogue): Handle eh_return.
        * config/sparc/sparc.h (DOESNT_NEED_UNWINDER): Remove.
        (EH_RETURN_DATA_REGNO): New.
        (EH_RETURN_STACKADJ_RTX): New.
        (EH_RETURN_HANDLER_RTX): New.
        * config/sparc/sparc.md (call/short branch peepholes): Check
        can_throw_internal instead of in_same_eh_region.

From-SVN: r40928