module CACHE_DIN_SELECT(din_data, din_data_reg, din_fetch, din_out, rewrite, rewrite_valid, byte_rpl, w, byte, fetch_word_rdy, valid, data);    input [31:0] din_data;    wire [31:0] din_data;    input [31:0] din_data_reg;    wire [31:0] din_data_reg;    input [31:0] din_fetch;    wire [31:0] din_fetch;    input [31:0] din_out;    wire [31:0] din_out;    input rewrite;    wire rewrite;    input rewrite_valid;    wire rewrite_valid;    input byte_rpl;    wire byte_rpl;    input [1:0] w;    wire [1:0] w;    input [1:0] byte;    wire [1:0] byte;    input fetch_word_rdy;    wire fetch_word_rdy;    output valid;    reg valid;    output [31:0] data;    reg [31:0] data;    reg v;    reg [31:0] d;        always @(din_data or din_data_reg or din_fetch or din_out or w or byte or fetch_word_rdy or rewrite or rewrite_valid or byte_rpl)        begin : select            v = 0;            if (rewrite)            begin                d = din_out;                if (byte_rpl)                    case (byte) //synopsys parallel_case                    0:                      d[31:24] = din_data_reg[7:0];                    1:                      d[23:16] = din_data_reg[7:0];                    2:                      d[15:8] = din_data_reg[7:0];                    default : begin                         d[7:0] = din_data_reg[7:0];                        end                    endcase                v = rewrite_valid;            end            else            begin                if (fetch_word_rdy)                begin                    d = din_fetch;                    v = 1;                end                else                begin                    d = din_data;                    v = 1;                end            end            data = d;            valid = v;        endendmodule