module tb;
    logic [31:0] pc, result;
    logic [19:0] imm20;
    logic auipc;
    string trace_file;
    upper_immediate dut (.*);
    initial begin
        if ($value$plusargs("trace=%s", trace_file)) begin $dumpfile(trace_file); $dumpvars(0, tb); end
        pc = 32'h100; imm20 = 20'h12345; auipc = 0; #1;
        if (result !== 32'h12345000) $fatal(1, "FAIL lui=%h", result);
        auipc = 1; #1;
        if (result !== 32'h12345100) $fatal(1, "FAIL auipc=%h", result);
        $display("PASS task01 lui=12345000 auipc=12345100");
        $finish;
    end
endmodule