diff --git a/llvm/utils/gn/secondary/llvm/lib/IR/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/IR/BUILD.gn
index a93b714c0111..cfd183fd5704 100644
--- a/llvm/utils/gn/secondary/llvm/lib/IR/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/IR/BUILD.gn
@@ -39,6 +39,7 @@ static_library("IR") {
     "DiagnosticInfo.cpp",
     "DiagnosticPrinter.cpp",
     "Dominators.cpp",
+    "FPEnv.cpp",
     "Function.cpp",
     "GVMaterializer.cpp",
     "Globals.cpp",