return pos, checkOp
}

func genResult(rr *RuleRewrite, arch arch, result, pos string) {
	move := result[0] == '@'
	if move {
		// parse @block directive
		s := strings.SplitN(result[1:], " ", 2)
		rr.add(stmtf("b = %s", s[0]))
		result = s[1]
	}
	cse := make(map[string]string)
	genResult0(rr, arch, result, true, move, pos, cse)
}