diff --git a/llvm/include/llvm/CodeGen/MachineInstr.h b/llvm/include/llvm/CodeGen/MachineInstr.h
index 4cb39c5f0a6a..0a1b927d2e9c 100644
--- a/llvm/include/llvm/CodeGen/MachineInstr.h
+++ b/llvm/include/llvm/CodeGen/MachineInstr.h
@@ -1199,12 +1199,22 @@ public:
 
   /// Wrapper for findRegisterDefOperandIdx, it returns
   /// a pointer to the MachineOperand rather than an index.
-  MachineOperand *findRegisterDefOperand(unsigned Reg, bool isDead = false,
-                                      const TargetRegisterInfo *TRI = nullptr) {
-    int Idx = findRegisterDefOperandIdx(Reg, isDead, false, TRI);
+  MachineOperand *
+  findRegisterDefOperand(unsigned Reg, bool isDead = false,
+                         bool Overlap = false,
+                         const TargetRegisterInfo *TRI = nullptr) {
+    int Idx = findRegisterDefOperandIdx(Reg, isDead, Overlap, TRI);
     return (Idx == -1) ? nullptr : &getOperand(Idx);
   }
 
+  const MachineOperand *
+  findRegisterDefOperand(unsigned Reg, bool isDead = false,
+                         bool Overlap = false,
+                         const TargetRegisterInfo *TRI = nullptr) const {
+    return const_cast<MachineInstr *>(this)->findRegisterDefOperand(
+        Reg, isDead, Overlap, TRI);
+  }
+
   /// Find the index of the first operand in the
   /// operand list that is used to represent the predicate. It returns -1 if
   /// none is found.
diff --git a/llvm/lib/CodeGen/LiveVariables.cpp b/llvm/lib/CodeGen/LiveVariables.cpp
index fd0ea35aadac..aaff982ef1b0 100644
--- a/llvm/lib/CodeGen/LiveVariables.cpp
+++ b/llvm/lib/CodeGen/LiveVariables.cpp
@@ -400,7 +400,7 @@ bool LiveVariables::HandlePhysRegKill(unsigned Reg, MachineInstr *MI) {
                                                 true/*IsImp*/, true/*IsKill*/));
     else {
       MachineOperand *MO =
-        LastRefOrPartRef->findRegisterDefOperand(Reg, false, TRI);
+        LastRefOrPartRef->findRegisterDefOperand(Reg, false, false, TRI);
       bool NeedEC = MO->isEarlyClobber() && MO->getReg() != Reg;
       // If the last reference is the last def, then it's not used at all.
       // That is, unless we are currently processing the last reference itself.
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 0b8e9caa09b7..95f5eb91ee1e 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1917,7 +1917,7 @@ void MachineInstr::setRegisterDefReadUndef(unsigned Reg, bool IsUndef) {
 void MachineInstr::addRegisterDefined(unsigned Reg,
                                       const TargetRegisterInfo *RegInfo) {
   if (TargetRegisterInfo::isPhysicalRegister(Reg)) {
-    MachineOperand *MO = findRegisterDefOperand(Reg, false, RegInfo);
+    MachineOperand *MO = findRegisterDefOperand(Reg, false, false, RegInfo);
     if (MO)
       return;
   } else {
diff --git a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 5cbc9e2a88b0..059e5f7c8dd3 100644
--- a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -1140,7 +1140,8 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
     // then remove the early-clobber flag.
     for (unsigned Reg : ECRegs) {
       if (MIB->readsRegister(Reg, TRI)) {
-        MachineOperand *MO = MIB->findRegisterDefOperand(Reg, false, TRI);
+        MachineOperand *MO = 
+            MIB->findRegisterDefOperand(Reg, false, false, TRI);
         assert(MO && "No def operand for clobbered register?");
         MO->setIsEarlyClobber(false);
       }