gcc/ChangeLog

	* config/s390/s390.c (s390_expand_setmem): Use new expanders.
	* config/s390/s390.md ("*setmem_long")
	("*setmem_long_and", "*setmem_long_31z"): Fix warnings.
	("setmem_long_<P:mode>"): New expanders.
	("setmem_long"): Removed.

gcc/testsuite/ChangeLog

	* gcc.target/s390/md/setmem_long-1.c: New test.
	* gcc.target/s390/md/setmem_long-2.c: New test.