diff --git a/include/llvm/CodeGen/MachineInstrBuilder.h b/include/llvm/CodeGen/MachineInstrBuilder.h
index 99849a64c56..9192474b952 100644
--- a/include/llvm/CodeGen/MachineInstrBuilder.h
+++ b/include/llvm/CodeGen/MachineInstrBuilder.h
@@ -34,6 +34,7 @@ namespace RegState {
     Undef          = 0x20,
     EarlyClobber   = 0x40,
     Debug          = 0x80,
+    InternalRead   = 0x100,
     DefineNoRead   = Define | Undef,
     ImplicitDefine = Implicit | Define,
     ImplicitKill   = Implicit | Kill
@@ -67,7 +68,8 @@ public:
                                              flags & RegState::Undef,
                                              flags & RegState::EarlyClobber,
                                              SubReg,
-                                             flags & RegState::Debug));
+                                             flags & RegState::Debug,
+                                             flags & RegState::InternalRead));
     return *this;
   }
 
@@ -310,6 +312,9 @@ inline unsigned getDeadRegState(bool B) {
 inline unsigned getUndefRegState(bool B) {
   return B ? RegState::Undef : 0;
 }
+inline unsigned getInternalReadRegState(bool B) {
+  return B ? RegState::InternalRead : 0;
+}
 
 } // End llvm namespace
 
diff --git a/include/llvm/CodeGen/MachineOperand.h b/include/llvm/CodeGen/MachineOperand.h
index d244dd92103..9ccbfe92347 100644
--- a/include/llvm/CodeGen/MachineOperand.h
+++ b/include/llvm/CodeGen/MachineOperand.h
@@ -542,14 +542,15 @@ public:
                                   bool isUndef = false,
                                   bool isEarlyClobber = false,
                                   unsigned SubReg = 0,
-                                  bool isDebug = false) {
+                                  bool isDebug = false,
+                                  bool isInternalRead = false) {
     MachineOperand Op(MachineOperand::MO_Register);
     Op.IsDef = isDef;
     Op.IsImp = isImp;
     Op.IsKill = isKill;
     Op.IsDead = isDead;
     Op.IsUndef = isUndef;
-    Op.IsInternalRead = false;
+    Op.IsInternalRead = isInternalRead;
     Op.IsEarlyClobber = isEarlyClobber;
     Op.IsDebug = isDebug;
     Op.SmallContents.RegNo = Reg;