* target.h (struct gcc_target): Add memory_move_cost field.
	* target-def.h (TARGET_MEMORY_MOVE_COST): New.
	(TARGET_INITIALIZER): Use TARGET_MEMORY_MOVE_COST.
	* targhooks.c (default_memory_move_cost): New function.
	* targhooks.h (default_memory_move_cost): Declare function.
	* reload.h (memory_move_cost): Declare.
	(memory_move_secondary_cost): Change type of 'in' argument to bool.
	* reginfo.c (memory_move_cost): New function.
	(memory_move_secondary_cost): Change type of 'in' argument to bool.
	* ira.h (ira_memory_move_cost): Update comment.
	* ira.c: (ira_memory_move_cost): Update comment.
	(setup_class_subset_and_memory_move_costs): Replace MEMORY_MOVE_COST
	with memory_move_cost.
	* postreload.c (reload_cse_simplify_set): (Ditto.).
	* reload1.c (choose_reload_regs): (Ditto.).
	* doc/tm.texi (TARGET_MEMORY_MOVE_COST): New.
	(MEMORY_MOVE_COST):  Revise documentation.

	* config/i386/i386.h (MEMORY_MOVE_COST): Remove macro.
	* config/i386/i386-protos.h (int ix86_memory_move_cost): Remove.
	* config/i386/i386.h (ix86_memory_move_cost): Make static. Change
	type of 'in' argument to bool.
	(TARGET_MEMORY_MOVE_COST): Define.

From-SVN: r160323