* config/arm/arm-protots.h (vfp_mem_operand): Rename ...
	(arm_coproc_mem_operand): ... To this.
	* config/arm/arm.c (arm_legitimate_address_p): Allow ldrd modes.
	(arm_legitimate_index_p): Ditto.
	(vfp_mem_operand): Rename ...
	(arm_coproc_mem_operand): ... To this.  Handle writeback modes.
	(vfp_secondary_reload_class): Use it.
	(output_move_double): Use doubleword load/store instructions.
	(arm_hard_regno_mode_ok): Only allow even reg pairs for ldrd.
	* config/arm/arm.h (TARGET_LDRD): Define.
	(EXTRA_CONSTRAINT_STR_ARM): Add 'Uy'.
	* config/gcc/arm/arm.md (arm_movdi): Allow all valid memory operands.
	New splitter for invalid doubleword loads.
	* config/arm/iwmmxt.md (iwmmxt_arm_movdi): Use Uy constraint.
	* config/arm/vfp.md (arm_movdi_vfp): Allow all valid memory operands.
	* doc/md.texi: Document Uy constraint.

From-SVN: r81543