private void visit_ifxx(int address, int jccOpcode) {
private void visit_ifxx(int type, int address, int jccOpcode) {
    private void visit_ifxx(int address, int jccOpcode) {        //IMPROVE: Constant case / Local case        RefItem v = vstack.popRef();        v.load(eContext);        Register r = v.getRegister();        os.writeTEST(r, r);        //TODO: shall I flush the stack before a jump?        os.writeJCC(helper.getInstrLabel(address), jccOpcode);        v.release(eContext);    }