branch_control.sv

module branch_control(b_control, r1, r2, branch_sel);
  input logic [2:0] b_control;
  input logic [31:0] r1;
  input logic [31:0] r2;
  output logic [0:0] branch_sel;
  always_comb
    begin
      case(b_control)
        3'b000: begin // BEQ
          if (r1 == r2)
            branch_sel = 1'b1;
          else
            branch_sel = 1'b0;
        end
        3'b001: begin // BNE
          if (r1 != r2)
            branch_sel = 1'b1;
          else
            branch_sel = 1'b0;
        end
        3'b100: begin // BLT
          if ($signed(r1) < $signed(r2))
            branch_sel = 1'b1;
          else
            branch_sel = 1'b0;
        end
        3'b110: begin // BLTU
          if (r1 < r2)
            branch_sel = 1'b1;
          else
            branch_sel = 1'b0;
        end
        3'b101: begin // BGE
          if ($signed(r1) >= $signed(r2))
            branch_sel = 1'b1;
          else
            branch_sel = 1'b0;
        end
        3'b111: begin // BGEU
          if (r1 >= r2)
            branch_sel = 1'b1;
          else
            branch_sel = 1'b0;
        end
        //3'b011: N/A
        default: begin 
          branch_sel = 1'b0;
        end
      endcase
    end
endmodule