[interpreter] Fix destroyed new.target register use.

test/mjsunit/regress/regress-crbug-645103.js

Index: test/mjsunit/regress/regress-crbug-645103.js
diff --git a/test/mjsunit/regress/regress-crbug-645103.js b/test/mjsunit/regress/regress-crbug-645103.js
new file mode 100644
index 0000000000000000000000000000000000000000..4f5f6629015d0a680940ef4cd1760f18a74ca7d2
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-645103.js
@@ -0,0 +1,17 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --ignition-staging --turbo
+
+class Base {}
+class Subclass extends Base {
+  constructor() {
+    %DeoptimizeNow();
+    super();
+  }
+}
+new Subclass();
+new Subclass();
+%OptimizeFunctionOnNextCall(Subclass);
+new Subclass();