* config/s390/s390.c (s390_const_ok_for_constraint_p): Add 'P'

	constraint.
	(legitimate_reload_constant_p): Fix handling of lliXX operands.
	Accept double-word constants that can be split.
	* config/s390/s390.md ("movti"): Use 'P' constraint.
	("*movdi_31", "*movdf_31"): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@103088 138bc75d-0d04-0410-961f-82ee72b054a4