reload.c (find_reloads_subreg_address): Remove FORCE_REPLACE parameter.

reload.c (find_reloads_subreg_address): Remove FORCE_REPLACE parameter.

	* reload.c (find_reloads_subreg_address): Remove FORCE_REPLACE
	parameter.  Always replace normal subreg with memory reference
	whenever possible.  Return NULL otherwise.
	(find_reloads_toplev): Always call find_reloads_subreg_address
	for subregs of registers equivalent to a memory location.
	Only recurse further if find_reloads_subreg_address fails.
	(find_reloads_address_1): Only call find_reloads_subreg_address
	for subregs of registers equivalent to a memory location.
	Properly handle failure of find_reloads_subreg_address.

From-SVN: r192499