diff --git a/llvm/include/llvm/CodeGen/MachineLoopUtils.h b/llvm/include/llvm/CodeGen/MachineLoopUtils.h
index 2cb0134ca84835..ec0b3529c0d603 100644
--- a/llvm/include/llvm/CodeGen/MachineLoopUtils.h
+++ b/llvm/include/llvm/CodeGen/MachineLoopUtils.h
@@ -37,10 +37,6 @@ MachineBasicBlock *PeelSingleBlockLoop(LoopPeelDirection Direction,
                                        MachineRegisterInfo &MRI,
                                        const TargetInstrInfo *TII);
 
-/// Return true if PhysReg is live outside the loop, i.e. determine if it
-/// is live in the loop exit blocks, and false otherwise.
-bool isRegLiveInExitBlocks(MachineLoop *Loop, int PhysReg);
-
 } // namespace llvm
 
 #endif // LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H
diff --git a/llvm/lib/CodeGen/MachineLoopUtils.cpp b/llvm/lib/CodeGen/MachineLoopUtils.cpp
index 2295e1ca6d4efc..fdcc8472f1c200 100644
--- a/llvm/lib/CodeGen/MachineLoopUtils.cpp
+++ b/llvm/lib/CodeGen/MachineLoopUtils.cpp
@@ -130,14 +130,3 @@ MachineBasicBlock *llvm::PeelSingleBlockLoop(LoopPeelDirection Direction,
 
   return NewBB;
 }
-
-bool llvm::isRegLiveInExitBlocks(MachineLoop *Loop, int PhysReg) {
-  SmallVector<MachineBasicBlock *, 4> ExitBlocks;
-  Loop->getExitBlocks(ExitBlocks);
-
-  for (auto *MBB : ExitBlocks)
-    if (MBB->isLiveIn(PhysReg))
-      return true;
-
-  return false;
-}