tree-loop-distribution.c (params.h): Include header file.
* tree-loop-distribution.c (params.h): Include header file.
(MAX_DATAREFS_NUM, DR_INDEX): New macro.
(datarefs_vec): New global var.
(create_rdg_vertices): Use datarefs_vec directly.
(free_rdg): Don't free data references.
(build_rdg): Update use. Don't free data references.
(distribute_loop): Compute global variable for data references.
Bail out if there are too many data references.