* i386.md (QImode patterns): Remove '*' before the 'r' constraints.
	* i386.h (procesor_costs): Add movzbl_load field.
	(HARD_REGNO_MODE_OK): Accept QImode on non PARTIAL_REGISTER_STALL in
	non-Q registers, accept DImode registers anywhere.
	(Q_CLASS_P): New.
	(MEMORY_MOVE_COST): Calculate QImode moves correctly.
	* i386.c (*_cost): Set value for movxbl_load field.

From-SVN: r30746