2012-07-05 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>

	* config/s390/s390-protos.h (s390_expand_movmem)
	(s390_expand_cmpmem): Add return value.
	* config/s390/s390.c (s390_expand_movmem, s390_expand_cmpmem):
	Return FALSE to use the library function in some cases.
	* config/s390/s390.md (movmem, cmpmem): Evaluate return value of C
	helper functions.

From-SVN: r189288