fix compile without ISL

	* toplev.c (process_options): Do not use flag_loop_block,
	flag_loop_interchange, and flag_loop_strip_mine.  Add check for
	flag_loop_optimize_isl.

From-SVN: r227282

gcc/ChangeLog

 2015-08-27  Sebastian Pop  <s.pop@samsung.com>
 
+	* toplev.c (process_options): Do not use flag_loop_block,
+	flag_loop_interchange, and flag_loop_strip_mine.  Add check for
+	flag_loop_optimize_isl.
+
+2015-08-27  Sebastian Pop  <s.pop@samsung.com>
+
 	* Makefile.in (OBJS): Remove graphite-blocking.o and
 	graphite-interchange.o.
 	* common.opt (floop-strip-mine, floop-interchange, floop-block):

gcc/toplev.c

@@ -1316,10 +1316,8 @@ process_options (void)
 
 #ifndef HAVE_isl
   if (flag_graphite
+      || flag_loop_optimize_isl
       || flag_graphite_identity
-      || flag_loop_block
-      || flag_loop_interchange
-      || flag_loop_strip_mine
       || flag_loop_parallelize_all)
     sorry ("Graphite loop optimizations cannot be used (ISL is not available)" 
 	   "(-fgraphite, -fgraphite-identity, -floop-block, "