code generator fails to assign a register to a var with an unreachable def

javac compiles the following to unverifiable code:


class T {
    public static void main(String[] args) {
        switch (args.length) {
        case 1:
            if (true)
                break;
            int i = 1;
        case 0:
            i = 2;
            System.out.print(i + " ");
        }
        System.out.print(args.getClass().getName());
    }
}