diff --git a/llvm/utils/gn/secondary/llvm/lib/Target/AMDGPU/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Target/AMDGPU/BUILD.gn
index f82497e60e83..e860c9465c66 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Target/AMDGPU/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Target/AMDGPU/BUILD.gn
@@ -178,6 +178,7 @@ static_library("LLVMAMDGPUCodeGen") {
     "GCNIterativeScheduler.cpp",
     "GCNMinRegStrategy.cpp",
     "GCNNSAReassign.cpp",
+    "GCNPreRAOptimizations.cpp",
     "GCNRegPressure.cpp",
     "GCNSchedStrategy.cpp",
     "R600AsmPrinter.cpp",