verilator/test_regress/t/t_unoptflat_simple.v
Jeremy Bennett bb2822f4b5 Add --report-unoptflat, bug611.
Signed-off-by: Wilson Snyder <wsnyder@wsnyder.org>
2013-02-26 22:26:47 -05:00

33 lines
589 B
Systemverilog

// DESCRIPTION: Verilator: Simple test of unoptflat
//
// Simple demonstration of an UNOPTFLAT combinatorial loop, using just 2 bits.
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2013 by Jeremy Bennett.
module t (/*AUTOARG*/
// Inputs
clk
);
input clk;
wire [1:0] x = { x[0], clk };
initial begin
x = 0;
end
always @(posedge clk or negedge clk) begin
`ifdef TEST_VERBOSE
$write("x = %x\n", x);
`endif
if (x[1] != 0) begin
$write("*-* All Finished *-*\n");
$finish;
end
end
endmodule