rs6000.h (CLASS_MAX_NREGS): DF goes in 1 register on e500v2.

rs6000.h (CLASS_MAX_NREGS): DF goes in 1 register on e500v2.

	* config/rs6000/rs6000.h (CLASS_MAX_NREGS): DF goes in 1 register
	on e500v2.
	(CANNOT_CHANGE_MODE_CLASS): Restrict DI mode changes on e500v2.
	(PREDICATE_CODES): Add rs6k_nonimmediate_operand.

	* config/rs6000/rs6000.c (invalid_e500_subreg): New.
	(rs6k_nonimmediate_operand): New.
	(rs6000_legitimate_offset_address_p): Handle DI modes on e500v2
	correctly.
	(legitimate_lo_sum_address_p): Same.
	(rs6000_legitimize_address): Same.
	(rs6000_legitimize_reload_address): Same.
	(rs6000_legitimate_address): Same.
	(spe_build_register_parallel): Pass DF and DC modes in a DI
	register.

	* config/rs6000/rs6000.md ("*movsi_internal1"): Change predicate
	to rs6k_nonimmediate_operand.

	* config/rs6000/spe.md ("*frob_df_di"): New.
	("*frob_di_df"): New.
	("*frob_di_df_2"): New.
	("*mov_sidf_e500_subreg0"): New.
	("*mov_sidf_e500_subreg4"): New.
	("*movdf_e500_double"): Change predicate to
	rs6k_nonimmediate_operand.

From-SVN: r93665