): FirLiteralExpression? {
        val concatenated = buildString {
            for (arg in stringConcatenationCall.arguments) {
                val evaluated = evaluate(arg) ?: return null
                append(evaluated.value.toString())
            }
        }

        return ConstantValueKind.String.toLiteralExpression(stringConcatenationCall.source, concatenated)
    }

    private fun evaluateFunctionCall(

  %15 = mhlo.add %13, %4 : tensor<32x32xi64>
  %16 = mhlo.select %14, %15, %13 : tensor<32x32xi1>, tensor<32x32xi64>
  %17 = mhlo.reshape %16 : (tensor<32x32xi64>) -> tensor<32x32x1xi64>
  %18 = "mhlo.concatenate"(%12, %17) <{dimension = 2 : i64}> : (tensor<32x32x1xi64>, tensor<32x32x1xi64>) -> tensor<32x32x2xi64>