* cselib.c (cselib_invalidate_mem_1): Move too ...
	(cselib_invalidate_mem): ... here; use new list
	(dummy_val, first_containing_mem): New static variables.
	(clear_table): Initialize first_containing_mem.
	(discard_useless_values):  Compact the containing_mem list.
	(add_mem_for_addr): Add to the list.
	* cselib.h (cselib_val): Add next_containing_mem.

From-SVN: r64191