From 7f9ecddb7f868a083ace6c82f97d80c2dd72dd29 Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 1 May 2020 14:07:33 -0700
Subject: [PATCH] Add testcase for #2010

---
 tests/opt/bug2010.ys | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 tests/opt/bug2010.ys

diff --git a/tests/opt/bug2010.ys b/tests/opt/bug2010.ys
new file mode 100644
index 000000000..cef820867
--- /dev/null
+++ b/tests/opt/bug2010.ys
@@ -0,0 +1,10 @@
+read_verilog <<EOT
+module test (
+        input signed [1:0] n,
+        output [3:0] dout
+);
+        assign dout = n + 4'sd 4;
+endmodule
+EOT
+
+equiv_opt -assert opt -fine
-- 
2.30.2