Handle POINTER_TYPE_P in EVRP

Handle POINTER_TYPE_P in EVRP
gcc/ChangeLog:

2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* tree-vrp.c (evrp_dom_walker::before_dom_children): Handle
	  POINTER_TYPE_P.


gcc/testsuite/ChangeLog:

2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* gcc.dg/tree-ssa/evrp4.c: New test.

From-SVN: r240841

gcc/ChangeLog

+2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>
+
+	* tree-vrp.c (evrp_dom_walker::before_dom_children): Handle
+	  POINTER_TYPE_P.
+
 2016-10-05  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/71661

gcc/testsuite/ChangeLog

+2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>
+
+	* gcc.dg/tree-ssa/evrp4.c: New test.
+
 2016-10-06  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/71661

gcc/testsuite/gcc.dg/tree-ssa/evrp4.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-evrp" } */
+
+int foo (int *p);
+
+struct st
+{
+  int a;
+  int b;
+};
+
+int bar (struct st *s)
+{
+
+  if (!s)
+    return 0;
+  foo (&s->a);
+}
+
+/* { dg-final { scan-tree-dump "\~\\\[0B, 0B\\\]" "evrp" } } */

gcc/tree-vrp.c

@@ -10666,7 +10666,8 @@ evrp_dom_walker::before_dom_children (basic_block bb)
 	  && gimple_code (stmt) == GIMPLE_COND
 	  && (op0 = gimple_cond_lhs (stmt))
 	  && TREE_CODE (op0) == SSA_NAME
-	  && INTEGRAL_TYPE_P (TREE_TYPE (gimple_cond_lhs (stmt))))
+	  && (INTEGRAL_TYPE_P (TREE_TYPE (gimple_cond_lhs (stmt)))
+	      || POINTER_TYPE_P (TREE_TYPE (gimple_cond_lhs (stmt)))))
 	{
 	  /* Entering a new scope.  Try to see if we can find a VR
 	     here.  */