Revert r25841.

2018-04-18  Martin Liska  <mliska@suse.cz>

	Revert
	2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

	PR lto/84805
	* ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
	incomplete types.

From-SVN: r259477

gcc/ChangeLog

+2018-04-18  Martin Liska  <mliska@suse.cz>
+
+	Revert
+	2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR lto/84805
+	* ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
+	incomplete types.
+
 2018-04-18  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/85388

gcc/ipa-devirt.c

@@ -690,8 +690,6 @@ odr_subtypes_equivalent_p (tree t1, tree t2,
 	 therefore which call will report the ODR violation, if any.  */
 	 if (!odr_type_p (t1)
 	     || !odr_type_p (t2)
-	     || !COMPLETE_TYPE_P (t1)
-	     || !COMPLETE_TYPE_P (t2)
 	     || (!get_odr_type (t1, true)->odr_violated
 		 && !get_odr_type (t2, true)->odr_violated))
         return true;