[PR 88214] Check that an argument is a pointer

2018-12-10  Martin Jambor  <mjambor@suse.cz>

	PR ipa/88214
	* ipa-prop.c (determine_locally_known_aggregate_parts): Make sure
	we check pointers against pointers.

	testsuite/
	* gcc.dg/ipa/pr88214.c: New test.

From-SVN: r266953

gcc/ChangeLog

+2018-12-10  Martin Jambor  <mjambor@suse.cz>
+
+	PR ipa/88214
+	* ipa-prop.c (determine_locally_known_aggregate_parts): Make sure
+	we check pointers against pointers.
+
 2018-12-10  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/88415

gcc/ipa-prop.c

@@ -1569,7 +1569,8 @@ determine_locally_known_aggregate_parts (gcall *call, tree arg,
       if (TREE_CODE (arg) == SSA_NAME)
 	{
 	  tree type_size;
-          if (!tree_fits_uhwi_p (TYPE_SIZE (TREE_TYPE (arg_type))))
+          if (!tree_fits_uhwi_p (TYPE_SIZE (TREE_TYPE (arg_type)))
+	      || !POINTER_TYPE_P (TREE_TYPE (arg)))
             return;
 	  check_ref = true;
 	  arg_base = arg;

gcc/testsuite/ChangeLog

+2018-12-10  Martin Jambor  <mjambor@suse.cz>
+
+	PR ipa/88214
+	* gcc.dg/ipa/pr88214.c: New test.
+
 2018-12-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR testsuite/88369

gcc/testsuite/gcc.dg/ipa/pr88214.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void i();
+  short a;
+  void b(e) char * e;
+  {
+    i();
+    b(a);
+  }