Use get_ptr_nonnull in tree-vrp

Use get_ptr_nonnull in tree-vrp
gcc/testsuite/ChangeLog:

2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* gcc.dg/ipa/vrp4.c: Adjust testcase.

gcc/ChangeLog:

2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* tree-vrp.c (get_value_range): Check get_ptr_nonnull.

From-SVN: r241289

gcc/ChangeLog

 2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>
 
+	* tree-vrp.c (get_value_range): Check get_ptr_nonnull.
+
+2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>
+
 	* ipa-prop.c (ipa_compute_jump_functions_for_edge): Set value range
 	for pointer type too.
 	(ipcp_update_vr): set_ptr_nonnull for pointer.

gcc/testsuite/ChangeLog

 2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>
 
+	* gcc.dg/ipa/vrp4.c: Adjust testcase.
+
+2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>
+
 	* gcc.dg/ipa/vrp4.c: New test.
 
 2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>

gcc/testsuite/gcc.dg/ipa/vrp4.c

 /* { dg-do compile } */
-/* { dg-options "-O2 -fdump-ipa-cp-details" } */
+/* { dg-options "-O2 -fdump-ipa-cp-details -fdump-tree-vrp1" } */
 
 static __attribute__((noinline, noclone))
 int foo (int *p)
@@ -25,3 +25,4 @@ int bar (struct st *s)
 }
 
 /* { dg-final { scan-ipa-dump "Setting nonnull for 0" "cp" } } */
+/* { dg-final { scan-tree-dump-times "if" 1 "vrp1" } } */

gcc/tree-vrp.c

@@ -685,7 +685,8 @@ get_value_range (const_tree var)
 	     anti-ranges for pointers.  Note that this is only valid with
 	     default definitions of PARM_DECLs.  */
 	  if (POINTER_TYPE_P (TREE_TYPE (sym))
-	      && nonnull_arg_p (sym))
+	      && (nonnull_arg_p (sym)
+		  || get_ptr_nonnull (var)))
 	    set_value_range_to_nonnull (vr, TREE_TYPE (sym));
 	  else if (INTEGRAL_TYPE_P (TREE_TYPE (sym)))
 	    {