Slow Java

class C<U> { U fu; C() {} C(C<U> other) { this.fu = other.fu; } C(U fu) { this.fu = fu; } static <U> C<U> m(C<U> src) { return new C<U>(src); } public static void main(String argv[]) { /* type inference is expected here: */ C<String> c2 = m(new C<>(m(new C<>() )) ); C<String> c3 = m(new C<>(m(new C<>(m(new C<>() )) )) ); C<String> c4 = m(new C<>(m(new C<>(m(new C<>(m(new C<>() )) )) )) ); // Javac(1.04), ECJ(.71s) C<String> c5 = m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>() )) )) )) )) ); // Javac(2.02s), ECJ(1.17s) C<String> c6 = m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>() )) )) )) )) )) ); // Javac(4.84s) ECJ(1.67s) C<String> c7 = m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>() )) )) )) )) )) )) ); // Javac(14.99s) ECJ(10.82s) C<String> c8 = m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>() )) )) )) )) )) )) )) ); // Javac(79.62s) ECJ(134.64s) C<String> c9 = m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>() )) )) )) )) )) )) )) )) ); // Javac(437s) ECJ(1305s) C<String> c10 = m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>(m(new C<>()))))))))))))))))))); // 3600 } }