Index: llvm/lib/Target/Mips/CMakeLists.txt
--- llvm/lib/Target/Mips/CMakeLists.txt.orig
+++ llvm/lib/Target/Mips/CMakeLists.txt
@@ -55,6 +55,7 @@ add_llvm_target(MipsCodeGen
   MipsPostLegalizerCombiner.cpp
   MipsRegisterBankInfo.cpp
   MipsRegisterInfo.cpp
+  MipsReturnProtectorLowering.cpp
   MipsSEFrameLowering.cpp
   MipsSEInstrInfo.cpp
   MipsSEISelDAGToDAG.cpp
