Constrain only on INTEGER_TYPE

Passes bootstrap, no regressions.

With this patch gcc bootstraps with graphite.
make BOOT_CFLAGS="-g -O2 -fgraphite-identity -floop-interchange -floop-block"

gcc/ChangeLog:

2015-08-12  Aditya Kumar  <hiraditya@msn.com>

        * graphite-scop-detection.c (stmt_simple_for_scop_p):
	Constrain only on INTEGER_TYPE

From-SVN: r227150

gcc/ChangeLog

+2015-08-24  Aditya Kumar  <aditya.k7@samsung.com>
+
+	* graphite-scop-detection.c (stmt_simple_for_scop_p):
+	Constrain only on INTEGER_TYPE.
+
 2015-08-24  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR target/67211

gcc/graphite-scop-detection.c

@@ -409,8 +409,8 @@ stmt_simple_for_scop_p (basic_block scop_entry, loop_p outermost_loop,
 	  {
 	    tree op = gimple_op (stmt, i);
 	    if (!graphite_can_represent_expr (scop_entry, loop, op)
-		/* We can not handle REAL_TYPE. Failed for pr39260.  */
-		|| TREE_CODE (TREE_TYPE (op)) == REAL_TYPE)
+		/* We can only constrain on integer type.  */
+		|| (TREE_CODE (TREE_TYPE (op)) != INTEGER_TYPE))
 	      {
 		if (dump_file && (dump_flags & TDF_DETAILS))
 		  {