2010-01-07  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-interchange.c (memory_stride_in_loop): Renamed
	pdr_stride_in_loop.
	(memory_strides_in_loop): Renamed memory_strides_in_loop_1.
	(memory_strides_in_loop): Memoize the memory strides per loop.
	(lst_interchange_profitable_p): Do not initialize to zero the memory
	strides.
	* graphite-poly.h (struct lst): Add a field memory_strides.
	(LST_LOOP_MEMORY_STRIDES): New.
	(new_lst_loop): Initialize LST_LOOP_MEMORY_STRIDES to -1.
	(free_lst): Clear LST_LOOP_MEMORY_STRIDES.

From-SVN: r155725