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-rw-r--r--tests/simple/peepopt.v8
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/simple/peepopt.v b/tests/simple/peepopt.v
index 1bf427897..b4d113dba 100644
--- a/tests/simple/peepopt.v
+++ b/tests/simple/peepopt.v
@@ -11,3 +11,11 @@ wire [3:0] t;
assign t = i * 3;
assign o = t / 3;
endmodule
+
+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
+
+module peepopt_dffmuxext_unsigned(input clk, ce, input [1:0] i, output reg [3:0] o);
+ always @(posedge clk) if (ce) o <= i;
+endmodule