File: t_array_pattern_unpacked.v

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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2009 by Iztok Jeras.
// SPDX-License-Identifier: CC0-1.0

module t (/*AUTOARG*/);

   logic [3:0] array_simp [1:0] [3:0];  // descending range array

   int         irep[1:2][1:6];

   initial begin
      array_simp[0] = '{ 4'd3, 4'd2, 4'd1, 4'd0};
      if ({array_simp[0][3],array_simp[0][2],array_simp[0][1],array_simp[0][0]}
          !== 16'h3210) $stop;

      // verilator lint_off WIDTH
      array_simp[0] = '{ 3 ,2 ,1, 0 };
      // verilator lint_on WIDTH
      if ({array_simp[0][3],array_simp[0][2],array_simp[0][1],array_simp[0][0]}
          !== 16'h3210) $stop;

      // Doesn't seem to work for unpacked arrays in other simulators
      //array_simp[0] = '{ 1:4'd3, default:13 };
      //if ({array_simp[0][3],array_simp[0][2],array_simp[0][1],array_simp[0][0]} !== 16'hDD3D) $stop;

      array_simp = '{ '{ 4'd3, 4'd2, 4'd1, 4'd0 }, '{ 4'd1, 4'd2, 4'd3, 4'd4 }};
      if ({array_simp[1][3],array_simp[1][2],array_simp[1][1],array_simp[1][0],
           array_simp[0][3],array_simp[0][2],array_simp[0][1],array_simp[0][0]}
          !== 32'h3210_1234) $stop;

      // Doesn't seem to work for unpacked arrays in other simulators
      array_simp = '{2{ '{4'd3, 4'd2, 4'd1, 4'd0 } }};
      if ({array_simp[1][3],array_simp[1][2],array_simp[1][1],array_simp[1][0],
           array_simp[0][3],array_simp[0][2],array_simp[0][1],array_simp[0][0]}
          !== 32'h3210_3210) $stop;

      array_simp = '{2{ '{4{ 4'd3 }} }};
      if ({array_simp[1][3],array_simp[1][2],array_simp[1][1],array_simp[1][0],
           array_simp[0][3],array_simp[0][2],array_simp[0][1],array_simp[0][0]}
          !== 32'h3333_3333) $stop;

      // Not legal in other simulators - replication doesn't match
      // However IEEE suggests this is legal.
      //array_simp = '{2{ '{2{ 4'd3, 4'd2 }} }};  // Note it's not '{3,2}

      // Replication
      irep = '{2{ '{3 {4, 5}}}};
      if ({irep[1][1], irep[1][2], irep[1][3], irep[1][4], irep[1][5], irep[1][6]}
          != {32'h4, 32'h5, 32'h4, 32'h5, 32'h4, 32'h5}) $stop;
      if ({irep[2][1], irep[2][2], irep[2][3], irep[2][4], irep[2][5], irep[2][6]}
          != {32'h4, 32'h5, 32'h4, 32'h5, 32'h4, 32'h5}) $stop;

      $write("*-* All Finished *-*\n");
      $finish;
   end

endmodule