Signed integer comparison:
            name = lhs <cmpop> rhs

        where cmpop can be '==', '!=', '<', '<=', '>', '>='

def icmp_signed(self, cmpop, lhs, rhs, name=''):
        """
        Signed integer comparison:
            name = lhs <cmpop> rhs

        where cmpop can be '==', '!=', '<', '<=', '>', '>='
        """
        return self._icmp('s', cmpop, lhs, rhs, name)