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Add -match-init option to dff2dffs.

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This commit is contained in:
Marcin Kościelnicki 2019-09-10 16:31:50 +00:00
parent c7f1368cd2
commit f72765090c
3 changed files with 77 additions and 3 deletions
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50
tests/techmap/dff2dffs.ys Normal file
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read_verilog << EOT
module top(...);
input clk;
input d;
input sr;
output reg q0, q1, q2, q3, q4, q5;
initial q0 = 1'b0;
initial q1 = 1'b0;
initial q2 = 1'b1;
initial q3 = 1'b1;
initial q4 = 1'bx;
initial q5 = 1'bx;
always @(posedge clk) begin
q0 <= sr ? 1'b0 : d;
q1 <= sr ? 1'b1 : d;
q2 <= sr ? 1'b0 : d;
q3 <= sr ? 1'b1 : d;
q4 <= sr ? 1'b0 : d;
q5 <= sr ? 1'b1 : d;
end
endmodule
EOT
proc
simplemap
design -save ref
dff2dffs
clean
select -assert-count 1 w:q0 %x t:$__DFFS_PP0_ %i
select -assert-count 1 w:q1 %x t:$__DFFS_PP1_ %i
select -assert-count 1 w:q2 %x t:$__DFFS_PP0_ %i
select -assert-count 1 w:q3 %x t:$__DFFS_PP1_ %i
select -assert-count 1 w:q4 %x t:$__DFFS_PP0_ %i
select -assert-count 1 w:q5 %x t:$__DFFS_PP1_ %i
design -load ref
dff2dffs -match-init
clean
select -assert-count 1 w:q0 %x t:$__DFFS_PP0_ %i
select -assert-count 0 w:q1 %x t:$__DFFS_PP1_ %i
select -assert-count 0 w:q2 %x t:$__DFFS_PP0_ %i
select -assert-count 1 w:q3 %x t:$__DFFS_PP1_ %i
select -assert-count 1 w:q4 %x t:$__DFFS_PP0_ %i
select -assert-count 1 w:q5 %x t:$__DFFS_PP1_ %i