diff --git a/gcc9-pr90303.patch b/gcc9-pr90303.patch
new file mode 100644
index 0000000..f67c9dd
--- /dev/null
+++ b/gcc9-pr90303.patch
@@ -0,0 +1,39 @@
+2019-05-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/90303
+	* ipa-devirt.c (obj_type_ref_class, get_odr_type): Don't use
+	TYPE_CANONICAL for TYPE_STRUCTURAL_EQUALITY_P types in !in_lto_p mode.
+
+	* g++.target/i386/pr90303.C: New test.
+
+--- gcc/ipa-devirt.c	(revision 270834)
++++ gcc/ipa-devirt.c	(revision 270835)
+@@ -2020,7 +2020,7 @@ obj_type_ref_class (const_tree ref)
+   ref = TREE_VALUE (TYPE_ARG_TYPES (ref));
+   gcc_checking_assert (TREE_CODE (ref) == POINTER_TYPE);
+   tree ret = TREE_TYPE (ref);
+-  if (!in_lto_p)
++  if (!in_lto_p && !TYPE_STRUCTURAL_EQUALITY_P (ret))
+     ret = TYPE_CANONICAL (ret);
+   else
+     ret = get_odr_type (ret)->type;
+@@ -2042,7 +2042,7 @@ get_odr_type (tree type, bool insert)
+   int base_id = -1;
+ 
+   type = TYPE_MAIN_VARIANT (type);
+-  if (!in_lto_p)
++  if (!in_lto_p && !TYPE_STRUCTURAL_EQUALITY_P (type))
+     type = TYPE_CANONICAL (type);
+ 
+   gcc_checking_assert (can_be_name_hashed_p (type)
+--- gcc/testsuite/g++.target/i386/pr90303.C	(nonexistent)
++++ gcc/testsuite/g++.target/i386/pr90303.C	(revision 270835)
+@@ -0,0 +1,8 @@
++// PR tree-optimization/90303
++// { dg-do compile { target ia32 } }
++// { dg-additional-options "-O2" }
++
++struct A { virtual void foo (); };
++template <class> class B : A {};
++typedef void (__attribute__((fastcall)) F) ();
++B<F> e;