[Bug target/77308] surprisingly large stack usage for sha512 on arm

[bernd.edlinger at hotmail dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77308

--- Comment #24 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Bernd Edlinger from comment #23)
> @@ -5020,7 +5020,7 @@
>  (define_insn_and_split "one_cmpldi2"
>    [(set (match_operand:DI 0 "s_register_operand"	 "=w,&r,&r,?w")
>  	(not:DI (match_operand:DI 1 "s_register_operand" " w, 0, r, w")))]

BTW: who knows what it is good for to have
=w
 w

on the first alternative, and on the 4th alternative
?w
 w

"?" does only make the alternative less attractive, but it is otherwise
exactly the same as the first one, right?