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Diffstat (limited to 'tests/opt/opt_merge_init.ys')
-rw-r--r-- | tests/opt/opt_merge_init.ys | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tests/opt/opt_merge_init.ys b/tests/opt/opt_merge_init.ys index a29c29df6..0176f09c7 100644 --- a/tests/opt/opt_merge_init.ys +++ b/tests/opt/opt_merge_init.ys @@ -20,6 +20,7 @@ endmodule EOT opt_merge +select -assert-count 1 t:$dff select -assert-count 1 a:init=1'0 @@ -46,4 +47,31 @@ endmodule EOT opt_merge +select -assert-count 1 t:$dff select -assert-count 1 a:init=2'bx1 + + +design -reset +read_verilog -icells <<EOT +module top(input clk, i, (* init = 1'b0 *) output o, /* NB: no init here! */ output p); + \$dff #( + .CLK_POLARITY(1'h1), + .WIDTH(32'd1) + ) ffo ( + .CLK(clk), + .D(i), + .Q(o) + ); + \$dff #( + .CLK_POLARITY(1'h1), + .WIDTH(32'd1) + ) ffp ( + .CLK(clk), + .D(i), + .Q(p) + ); +endmodule +EOT + +opt_merge +select -assert-count 2 t:$dff |