diff --git a/test_regress/t/t_math_pick.pl b/test_regress/t/t_math_pick.pl new file mode 100755 index 000000000..f91289753 --- /dev/null +++ b/test_regress/t/t_math_pick.pl @@ -0,0 +1,18 @@ +#!/usr/bin/perl +if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; } +# DESCRIPTION: Verilator: Verilog Test driver/expect definition +# +# Copyright 2003 by Wilson Snyder. This program is free software; you can +# redistribute it and/or modify it under the terms of either the GNU +# Lesser General Public License Version 3 or the Perl Artistic License +# Version 2.0. + +compile ( + ); + +execute ( + check_finished=>1, + ); + +ok(1); +1; diff --git a/test_regress/t/t_math_pick.v b/test_regress/t/t_math_pick.v new file mode 100644 index 000000000..1e865f89f --- /dev/null +++ b/test_regress/t/t_math_pick.v @@ -0,0 +1,82 @@ +// DESCRIPTION: Verilator: Verilog Test module +// +// This file ONLY is placed into the Public Domain, for any use, +// without warranty, 2013. + +module t (/*AUTOARG*/ + // Inputs + clk + ); + input clk; + + integer cyc=0; + reg [63:0] crc; + reg [63:0] sum; + + // Take CRC data and apply to testblock inputs + wire pick1 = crc[0]; + wire [13:0][1:0] data1 = crc[27+1:1]; + wire [3:0][2:0][1:0] data2 = crc[23+29:29]; + + /*AUTOWIRE*/ + // Beginning of automatic wires (for undeclared instantiated-module outputs) + logic [15:0] [1:0] datao; // From test of Test.v + // End of automatics + + Test test (/*AUTOINST*/ + // Outputs + .datao (datao/*[15:0][1:0]*/), + // Inputs + .pick1 (pick1), + .data1 (data1/*[13:0][1:0]*/), + .data2 (data2/*[2:0][3:0][1:0]*/)); + + // Aggregate outputs into a single result vector + wire [63:0] result = {32'h0, datao}; + + // Test loop + always @ (posedge clk) begin +`ifdef TEST_VERBOSE + $write("[%0t] cyc==%0d crc=%x result=%x\n",$time, cyc, crc, result); +`endif + cyc <= cyc + 1; + crc <= {crc[62:0], crc[63]^crc[2]^crc[0]}; + sum <= result ^ {sum[62:0],sum[63]^sum[2]^sum[0]}; + if (cyc==0) begin + // Setup + crc <= 64'h5aef0c8d_d70a4497; + sum <= 64'h0; + end + else if (cyc<10) begin + sum <= 64'h0; + end + else if (cyc<90) begin + end + else if (cyc==99) begin + $write("[%0t] cyc==%0d crc=%x sum=%x\n",$time, cyc, crc, sum); + if (crc !== 64'hc77bb9b3784ea091) $stop; + // What checksum will we end up with (above print should match) +`define EXPECTED_SUM 64'h3ff4bf0e6407b281 + if (sum !== `EXPECTED_SUM) $stop; + $write("*-* All Finished *-*\n"); + $finish; + end + end + +endmodule + +module Test + ( + input logic pick1, + input logic [13:0] [1:0] data1, // 14 x 2 = 28 bits + input logic [ 3:0] [2:0] [1:0] data2, // 4 x 3 x 2 = 24 bits + output logic [15:0] [1:0] datao // 16 x 2 = 32 bits + ); + // verilator lint_off WIDTH + always_comb datao[13: 0] // 28 bits + = (pick1) + ? {data1} // 28 bits + : {'0, data2}; // 25-28 bits, perhaps not legal as '0 is unsized + // verilator lint_on WIDTH + always_comb datao[15:14] = '0; +endmodule