PR target/25311
	* config/s390/s390.c (struct s390_address): New field literal_pool.
	(s390_decompose_address): Compute literal_pool field.  Do not 
	assume register %r13 is always (and solely) used as pool base.
	(s390_extra_constraint_str): Use literal_pool field.

	PR target/25311
	* gcc.c-torture/compile/pr25311.c: New test.

From-SVN: r108278