re PR lto/84044 (Spurious -Wodr warning with -flto)

	PR lto/84044
	* ipa-devirt.c (odr_types_equivalent_p): Use operand_equal_p to
	compare ENUM values.
	* g++.dg/lto/odr-4_0.C: New testcase.
	* g++.dg/lto/odr-4_1.C: New testcase.

From-SVN: r266334

gcc/ChangeLog

+2018-11-20  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR lto/84044
+	* ipa-devirt.c (odr_types_equivalent_p): Use operand_equal_p to
+	compare ENUM values.
+
 2018-11-20  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/87895

gcc/ipa-devirt.c

@@ -1343,7 +1343,7 @@ odr_types_equivalent_p (tree t1, tree t2, bool warn, bool *warned,
 			   " is defined in another translation unit"));
 	      return false;
 	    }
-	  if (TREE_VALUE (v1) != TREE_VALUE (v2))
+	  if (!operand_equal_p (TREE_VALUE (v1), TREE_VALUE (v2), 0))
 	    {
 	      warn_odr (t1, t2, NULL, NULL, warn, warned,
 			G_("an enum with different values is defined"

gcc/testsuite/ChangeLog

+2018-11-20  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR lto/84044
+	* g++.dg/lto/odr-4_0.C: New testcase.
+	* g++.dg/lto/odr-4_1.C: New testcase.
+
 2018-11-20  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/88110

gcc/testsuite/g++.dg/lto/odr-4_0.C

+// { dg-lto-do link }
+// { dg-lto-options { -O2 -flto }  } 
+struct B {
+  enum class E { V0, V1 };
+  virtual ~B();
+  E e;
+};
+
+B b;
+
+int main() {}

gcc/testsuite/g++.dg/lto/odr-4_1.C

+struct B {
+  enum class E { V0, V1 };
+  virtual ~B();
+  E e;
+};
+
+B::~B() = default;
+
+