port-hp300: saw this whilst compiling a -current kernel over nfs

Subject: saw this whilst compiling a -current kernel over nfs
To: None <port-hp300@NetBSD.ORG>
From: The architect <spberry@traveler.ansci.iastate.edu>
List: port-hp300
Date: 02/24/1996 16:11:09

../../../../nfs/nfs_vnops.c: In function `nfsspec_close':
../../../../nfs/nfs_vnops.c:3254: internal error--insn does not satisfy its constraints:
(insn 139 54 56 (set (reg:DI 10 a2)
        (mem/s:DI (plus:SI (reg:SI 11 a3)
                (const_int 168)))) 39 {movdi} (nil)
    (nil))
cc: Internal compiler error: program cc1 got fatal signal 6
*** Error code 1

Stop.

sources are dated 022396 or so.
any ideas?