gcc/ChangeLog-setmem_long_and

	* config/s390/s390.md ("*setmem_long_and")
	("*setmem_long_and_31z"): Use zero_extend instead of and.
gcc/testsuite/ChangeLog-setmem_long_and

	* gcc.target/s390/md/setmem_long-1.c: Remove xfail, skip with -O0.