re PR target/14533 (s390x internal compiler error: in legitimize_pic_address, at config/s390/s390.c:2276)

	PR target/14533
	* config/s390/s390.c (legitimize_pic_address): Don't abort on UNSPEC
	other than UNSPEC_GOTOFF.

	* gcc.dg/20040311-2.c: New test.

From-SVN: r79442