if else inside generate statement

[shainky]

hi,
can i use if else inside generate statement?

---

Code dot - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
generate
      for (i = 0; i < my_size; i = i + 1)
    begin : size
                    u_mux(.in(index[i]),
                  .sel(idx_int[i]),
                  .out(side[4*i +: 4]));
           if (i == 'd0)
           assign my_data[64*i +: 64] = {{56{1'b0}},data[8*i +: 8]}; 
       else if (i == 'd1) 
            assign my_data[64*i +: 64] = (datasize == 1'b1) ? {{48{1'b0}}, data[8*i +: 16]} : 
                        {{56{1'b0}},data[8*i +: 8]}; 
       else  
            assign my_data[64*i +: 64] = {{56{1'b0}},data[((8*i)+8) +: 8]}; 
 
end 
   endgenerate

---

I think we cannot use assign statement with if statement.
But the moment i am removing assign statement i am getting spyglass lint errors.
Is this code synthesizable?

 

[FvM]

A generate if can be used in this place, because the if condition is static, only depending on generate var i.

Regular if statements can be only used inside a sequential block or function.

 

[ads-ee]

The if is used to select how the least significant 64-bit words are assigned to the my_data bus. As the if is used to conditionally assign 64-bits it is required, otherwise the three assigns would conflict with each other.

It should have no problen synthesizing.