From 00828a9eb902ab0d39cb7e1db45a19efa9130a00 Mon Sep 17 00:00:00 2001
From: vczh <vczh@outlook.com>
Date: Sat, 6 Jan 2024 01:13:40 -0800
Subject: [PATCH] Update README.md

---
 Tools/README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Tools/README.md b/Tools/README.md
index 3edbabee..63929bf9 100644
--- a/Tools/README.md
+++ b/Tools/README.md
@@ -19,6 +19,8 @@
   - GacGen
   - GlrParserGen
 
+**NOTE** Optimization is not turned on at this moment, tool performance could be slow especially for GacGen. You could change the makefile if you need to.
+
 ## macOS
 
 (editing...)