[Bug target/52698] -maddress-mode=long doesn't work

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52698

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> 2012-03-25 23:43:11 UTC ---
If

(plus:DI (plus:DI (zero_extend:DI (unspec:SI [
                    (const_int 0 [0])
                ] UNSPEC_TP))
        (reg:DI 97))
    (reg:DI 2 cx [orig:98 D.1709 ] [98]))

leads to reload problem, shouldn't we simply not generate

(zero_extend:DI (unspec:SI [(const_int 0 [0])] UNSPEC_TP))

to begin with, given that OS provides

(unspec:DI [(const_int 0 [0])] UNSPEC_TP)