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-rw-r--r--tests/various/peepopt.ys21
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/various/peepopt.ys b/tests/various/peepopt.ys
index 6bca62e2b..734a22408 100644
--- a/tests/various/peepopt.ys
+++ b/tests/various/peepopt.ys
@@ -173,3 +173,24 @@ select -assert-count 1 t:$dff r:WIDTH=2 %i
select -assert-count 2 t:$mux
select -assert-count 2 t:$mux r:WIDTH=2 %i
select -assert-count 0 t:$logic_not t:$dff t:$mux %% t:* %D
+
+####################
+
+design -reset
+read_verilog <<EOT
+module peepopt_dffmuxext_signed_rst_init(input clk, ce, rstn, input signed [1:0] i, output reg signed [3:0] o);
+ initial o <= 4'b0010;
+ always @(posedge clk) begin
+ if (ce) o <= i;
+ if (!rstn) o <= 4'b1111;
+ end
+endmodule
+EOT
+
+proc
+equiv_opt -assert peepopt
+design -load postopt
+select -assert-count 1 t:$dff r:WIDTH=4 %i
+select -assert-count 2 t:$mux
+select -assert-count 2 t:$mux r:WIDTH=4 %i
+select -assert-count 0 t:$logic_not t:$dff t:$mux %% t:* %D