[backport gcc-4.8/trunk r189374 <mikpe@it.uu.se>]

gcc/

2012-07-09  Richard Guenther  <rguenther@suse.de>

	PR bootstrap/53898
	* graphite-optimize-isl.c: Make sure CU is not empty.

--- gcc-4.8-20120708/gcc/graphite-optimize-isl.c.~1~	2012-07-04 11:15:09.000000000 +0200
+++ gcc-4.8-20120708/gcc/graphite-optimize-isl.c	2012-07-09 15:47:40.000000000 +0200
@@ -28,6 +28,7 @@ along with GCC; see the file COPYING3.  
 #include <isl/band.h>
 #include <isl/aff.h>
 #include <isl/options.h>
+#endif
 
 #include "system.h"
 #include "coretypes.h"
@@ -39,6 +40,7 @@ along with GCC; see the file COPYING3.  
 #include "tree-scalar-evolution.h"
 #include "sese.h"
 
+#ifdef HAVE_cloog
 #include "graphite-poly.h"
 
 static isl_union_set *