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-rw-r--r--tests/various/peepopt.ys19
1 files changed, 18 insertions, 1 deletions
diff --git a/tests/various/peepopt.ys b/tests/various/peepopt.ys
index 33555264d..2a660d5c9 100644
--- a/tests/various/peepopt.ys
+++ b/tests/various/peepopt.ys
@@ -49,12 +49,29 @@ select -assert-count 0 t:*
design -reset
read_verilog <<EOT
+module peepopt_dffmuxext_unsigned(input clk, ce, input [1:0] i, output reg [3:0] o);
+ always @(posedge clk) if (ce) o <= i;
+endmodule
+EOT
+
+proc
+equiv_opt -assert peepopt
+design -load postopt
+clean
+select -assert-count 1 t:$dff r:WIDTH=2 %i
+select -assert-count 1 t:$mux r:WIDTH=2 %i
+select -assert-count 0 t:$dff t:$mux %% t:* %D
+
+####################
+
+design -reset
+read_verilog <<EOT
module peepopt_dffmuxext_signed(input clk, ce, input signed [1:0] i, output reg signed [3:0] o);
always @(posedge clk) if (ce) o <= i;
endmodule
EOT
-prep -nokeepdc
+proc
equiv_opt -assert peepopt
design -load postopt
clean