Fix PR45229: gcc.c-torture/execute/20000412-4.c ICEs with -fgraphite-identity.

2010-08-17  Sebastian Pop  <sebastian.pop@amd.com>

	PR middle-end/45229
	* graphite-sese-to-poly.c (rewrite_cross_bb_scalar_deps): Do not
	handle GIMPLE_CALLs with no LHS.

From-SVN: r164785

gcc/ChangeLog

+2010-09-30  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR middle-end/45229
+	* graphite-sese-to-poly.c (rewrite_cross_bb_scalar_deps): Do not
+	handle GIMPLE_CALLs with no LHS.
+
 2010-09-30  Riyadh Baghdadi <baghdadi.mr@gmail.com>
 
 	* graphite-poly.c (init_graphite_out_file): New.

gcc/ChangeLog.graphite

+2010-08-17  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR middle-end/45229
+	* graphite-sese-to-poly.c (rewrite_cross_bb_scalar_deps): Do not
+	handle GIMPLE_CALLs with no LHS.
+
 2010-08-17  Riyadh Baghdadi  <baghdadi.mr@gmail.com>
 	    Sebastian Pop  <sebastian.pop@amd.com>
 

gcc/graphite-sese-to-poly.c

@@ -2465,7 +2465,8 @@ rewrite_cross_bb_scalar_deps (sese region, gimple_stmt_iterator *gsi)
       return false;
     }
 
-  if (!is_gimple_reg (def))
+  if (!def
+      || !is_gimple_reg (def))
     return false;
 
   if (scev_analyzable_p (def, region))