diff --git a/llvm/utils/gn/secondary/llvm/lib/Transforms/IPO/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Transforms/IPO/BUILD.gn
index c088d482ad6d..e6a2a876be10 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Transforms/IPO/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Transforms/IPO/BUILD.gn
@@ -40,6 +40,7 @@ static_library("IPO") {
     "GlobalSplit.cpp",
     "HotColdSplitting.cpp",
     "IPO.cpp",
+    "IROutliner.cpp",
     "InferFunctionAttrs.cpp",
     "InlineSimple.cpp",
     "Inliner.cpp",