gcc/
	* cselib.c (find_slot_memmode): Delete.
	(cselib_hasher): Change compare_type to a struct.
	(cselib_hasher::equal): Update accordingly.  Don't expect wrapped
	constants.
	(preserve_constants_and_equivs): Adjust for new compare_type.
	(cselib_find_slot): Likewise.  Take the mode of the rtx as argument.
	(wrap_constant): Delete.
	(cselib_lookup_mem, cselib_lookup_1): Update calls to cselib_find_slot.

From-SVN: r209843