vrp55.c: Use keeps_null_pointer_checks to determine correct test response.

        * gcc.dg/tree-ssa/vrp55.c: Use keeps_null_pointer_checks to determine
        correct test response.

From-SVN: r201843

gcc/testsuite/ChangeLog

@@ -5,6 +5,9 @@
 	* gcc.dg/tree-ssa/ssa-dom-thread-4.c [avr-*-*]: Expect 6 times
 	"Threaded".
 
+	* gcc.dg/tree-ssa/vrp55.c: Use keeps_null_pointer_checks to determine
+	correct test response.
+
 2013-08-18  Jan Hubicka  <jh@suse.cz>
 
 	* g++.dg/ipa/type-inheritance-1.C: New testcase.

gcc/testsuite/gcc.dg/tree-ssa/vrp55.c

@@ -9,6 +9,7 @@ fu (char *p, int x)
     arf ();
 }
 
-/* { dg-final { scan-tree-dump-times "Threaded jump" 1 "vrp1" } } */
+/* { dg-final { scan-tree-dump-times "Threaded jump" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
+/* { dg-final { scan-tree-dump-times "Threaded jump" 0 "vrp1" { target {   keeps_null_pointer_checks } } } } */
 /* { dg-final { cleanup-tree-dump "vrp1" } } */