Adding Enzyme

.gitmodules

diff --git a/.gitmodules b/.gitmodules
index 16a38f7..dae1d90 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "third_party/llvm-project"]
 	path = externals/llvm-project
 	url = https://github.com/llvm/llvm-project.git
+[submodule "externals/Enzyme"]
+	path = externals/Enzyme
+	url = https://github.com/EnzymeAD/Enzyme.git

externals/Enzyme

diff --git a/externals/Enzyme b/externals/Enzyme
new file mode 160000
index 0000000..cf89592
--- /dev/null
+++ b/externals/Enzyme
@@ -0,0 +1 @@
+Subproject commit cf89592eb10c2e94352954a127fc8697aef40953