diff --git a/.gitignore b/.gitignore
index dd5de6b7..4f2fc845 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,5 @@ src/device/stm32/*.s
 src/device/sam/*.go
 src/device/sam/*.s
 vendor
+llvm
+llvm-build