diff --git a/.gitmodules b/.gitmodules
index ddc4c9a4..788b3aaa 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -34,3 +34,6 @@
 [submodule "third_party/midout"]
 	path = third_party/midout
 	url = https://github.com/MegEngine/midout.git
+[submodule "third_party/llvm-project"]
+	path = third_party/llvm-project
+	url = https://github.com/llvm/llvm-project.git
diff --git a/third_party/llvm-project b/third_party/llvm-project
new file mode 160000
index 00000000..b2589200
--- /dev/null
+++ b/third_party/llvm-project
@@ -0,0 +1 @@
+Subproject commit b2589200957af50e7d166afca9df6ad46d7418c6