diff --git a/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
index 476353e958d781..bf9f70ded77743 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
@@ -94,6 +94,8 @@ static_library("Support") {
     "LockFileManager.cpp",
     "LowLevelType.cpp",
     "MD5.cpp",
+    "MSP430AttributeParser.cpp",
+    "MSP430Attributes.cpp",
     "ManagedStatic.cpp",
     "MathExtras.cpp",
     "MemAlloc.cpp",