1 files changed, 27 insertions, 0 deletions
diff --git a/tests/opt/opt_share_bug2335.ys b/tests/opt/opt_share_bug2335.ys
new file mode 100644
index 000000000..0846a9ec3
--- /dev/null
+++ b/tests/opt/opt_share_bug2335.ys
@@ -0,0 +1,27 @@
+read_verilog <<EOT
+
+module top(...);
+
+input [3:0] A, B, C;
+input S;
+input [1:0] T;
+output [3:0] X;
+output reg [3:0] Y;
+
+wire [3:0] D = A + B;
+
+assign X = S ? D : A + C;
+always @* begin
+        case(T)
+        2'b01: Y <= A;
+        2'b10: Y <= B;
+        default: Y <= D;
+        endcase
+end
+
+endmodule
+
+EOT
+
+proc
+equiv_opt -assert opt_share