add array access function in the right order

we used to add the access functions in the wrong order, Fortran style, leading to unprofitable interchanges.

	* graphite-sese-to-poly.c (pdr_add_memory_accesses): Iterate in
	the same order as adding data reference access functions.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r231465

gcc/ChangeLog

 2015-12-09  Aditya Kumar  <aditya.k7@samsung.com>
 	    Sebastian Pop  <s.pop@samsung.com>
 
+	* graphite-sese-to-poly.c (pdr_add_memory_accesses): Iterate in
+	the same order as adding data reference access functions.
+
+2015-12-09  Aditya Kumar  <aditya.k7@samsung.com>
+	    Sebastian Pop  <s.pop@samsung.com>
+
 	* graphite-optimize-isl.c (optimize_isl): Improve dump message.
 
 2015-12-09  Marek Polacek  <polacek@redhat.com>

gcc/graphite-sese-to-poly.c

@@ -912,7 +912,7 @@ pdr_add_memory_accesses (isl_map *acc, dr_info &dri)
   for (i = 0; i < nb_subscripts; i++)
     {
       isl_pw_aff *aff;
-      tree afn = DR_ACCESS_FN (dr, nb_subscripts - 1 - i);
+      tree afn = DR_ACCESS_FN (dr, i);
 
       aff = extract_affine (scop, afn,
 			    isl_space_domain (isl_map_get_space (acc)));