[Bug bootstrap/90418] [10 Regression] powerpc-darwin9 bootstrap fails after r271013

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90418

--- Comment #9 from David Edelsohn <dje at gcc dot gnu.org> ---
Changing

  /* Extra stack adjustment for exception handler return.  */
  if (crtl->calls_eh_return)
    emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx,
                           EH_RETURN_STACKADJ_RTX));

is not sufficient for AIX, at least.  I am testing an additional change to the
earlier code to load exception handler data.