diff --git a/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
index 0e5528957d16e..44c86b0b9d89c 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
@@ -109,6 +109,7 @@ static_library("Support") {
     "NativeFormatting.cpp",
     "OptimizedStructLayout.cpp",
     "Optional.cpp",
+    "PGOOptions.cpp",
     "Parallel.cpp",
     "PluginLoader.cpp",
     "PrettyStackTrace.cpp",