yosys/tests/verilog/unbased_unsized_shift.sv

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Systemverilog
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module pass_through(
input [63:0] inp,
output [63:0] out
);
assign out = inp;
endmodule
module top;
logic [63:0] s0c, s1c, sxc, s0d, s1d, sxd, d;
pass_through pt(8, d);
assign s0c = '0 << 8;
assign s1c = '1 << 8;
assign sxc = 'x << 8;
assign s0d = '0 << d;
assign s1d = '1 << d;
assign sxd = 'x << d;
always @* begin
assert (s0c === 64'h0000_0000_0000_0000);
assert (s1c === 64'hFFFF_FFFF_FFFF_FF00);
assert (sxc === 64'hxxxx_xxxx_xxxx_xx00);
assert (s0d === 64'h0000_0000_0000_0000);
assert (s1d === 64'hFFFF_FFFF_FFFF_FF00);
assert (sxd === 64'hxxxx_xxxx_xxxx_xx00);
end
endmodule