| // DESCRIPTION: Verilator: Verilog Test module |
| // |
| // This file ONLY is placed into the Public Domain, for any use, |
| // without warranty, 2003 by Wilson Snyder. |
| |
| module t (/*AUTOARG*/ |
| // Inputs |
| clk |
| ); |
| |
| input clk; |
| reg [7:0] cyc; initial cyc=0; |
| |
| reg [31:0] loops; |
| reg [31:0] loops2; |
| |
| always @ (posedge clk) begin |
| cyc <= cyc+8'd1; |
| if (cyc == 8'd1) begin |
| $write("[%0t] t_loop: Running\n",$time); |
| // Unwind < |
| loops = 0; |
| loops2 = 0; |
| for (int i=0; i<16; i=i+1) begin |
| loops = loops + i; // surefire lint_off_line ASWEMB |
| loops2 = loops2 + i; // surefire lint_off_line ASWEMB |
| end |
| if (loops !== 120) $stop; |
| if (loops2 !== 120) $stop; |
| // Check we can declare the same signal twice |
| loops = 0; |
| for (int i=0; i<=16; i=i+1) begin |
| loops = loops + 1; |
| end |
| if (loops !== 17) $stop; |
| // Check type is correct |
| loops = 0; |
| for (byte unsigned i=5; i>4; i=i+1) begin |
| loops = loops + 1; |
| end |
| if (loops !== 251) $stop; |
| // Check large loops |
| loops = 0; |
| for (int i=0; i<100000; i=i+1) begin |
| loops = loops + 1; |
| end |
| if (loops !== 100000) $stop; |
| $write("*-* All Finished *-*\n"); |
| $finish; |
| end |
| end |
| |
| endmodule |