1 files changed, 25 insertions, 0 deletions
diff --git a/tests/opt/opt_share_large_pmux_cat_multipart.v b/tests/opt/opt_share_large_pmux_cat_multipart.v
new file mode 100644
index 000000000..34d2bd9a8
--- /dev/null
+++ b/tests/opt/opt_share_large_pmux_cat_multipart.v
@@ -0,0 +1,25 @@
+module opt_share_test(
+  input [15:0]      a,
+  input [15:0]      b,
+  input [15:0]      c,
+  input [15:0]      d,
+  input [2:0]       sel,
+  output reg [31:0] res
+  );
+
+  wire [15:0]       add0_res = a+d;
+
+  always @* begin
+    case(sel)
+      0: res = {add0_res, a};
+      1: res = {a - b, add0_res[7], 15'b0};
+      2: res = {b-a, b};
+      3: res = {d, b - c};
+      4: res = {d, b - a};
+      5: res = {c, d};
+      6: res = {a - c, b-d};
+      default: res = 32'bx;
+    endcase
+  end
+
+endmodule