spe.md (SPE64): New mode macro.

	* config/rs6000/spe.md (SPE64): New mode macro.
	(mov_sidf_e500_subreg0): Change to mov_si<mode>_e500_subreg0.  Add
	memory load.
	(mov_si<mode>_e500_subreg0_2): New.
	(mov_sidf_e500_subreg4): Change to mov_si<mode>_e500_subreg4.  Add
	memory load.
	(mov_si<mode>_e500_subreg4_2): New.
	* config/rs6000/predicates.md (input_operand): Do not allow
	invalid E500 subregs.
	(rs6000_nonimmediate_operand): Check for invalid E500 subregs also
	if TARGET_SPE.
	* config/rs6000/rs6000.c (invalid_e500_subreg): Check for subregs
	involving DFmode if TARGET_E500_DOUBLE.  Check for subregs
	involving vector modes if TARGET_SPE.

From-SVN: r119094