HDL Coder RAM mapping failed

I am practicing HDL Coder and I have an error.

I originally wanted to ignore this problem, but I found that the FPGA implementation would fail.

Because too many LUTs are used. How can I modify my code?

_fixpt:26 Warning 'g' : RAM mapping failed for variable, 'g', because it has a non-scalar sub-matrix access.

_fixpt:0 Warning 'g2' : RAM mapping failed for variable, 'g2', because it has a non-scalar sub-matrix access.

function P= test(in,win)

persistent g

L=zeros(1,16);

persistent g2

E= zeros(1, 16);
if isempty(g)
     g = zeros(1, 16);
    g2 = zeros(1, 16);

end

     if win<=16
       E(:,win)=in;
       g=E+g;
     elseif win>16
        L(:,win-16)=in; 

     end

if win==16
%  Y=g3;
        Y=g;
 Y=reshape(Y,4,4); 

          W=eye(4,4);
           A=W*Y;
           A=reshape(A,1,16); 
           g2=A;
  end
  % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
  if win>16
  %   g2=A;
  S=g2;
  P=S(:,win-16);   
  %     end
       else
      P=0;
  end

Answer 1

[Kiran Kintali]

HDL Coder would need input types to infer the intermediate and output types.

Please specify

 in = <sample value>; % define in
 win = <sample value>; % define win

To repeat the issue using the following commands

c = coder.config('hdl');
codegen -args {in, win} -config c -report test