diff --git a/lib/Transforms/ObjCARC/ObjCARC.h b/lib/Transforms/ObjCARC/ObjCARC.h
index 61602260be3..ba98e0a9c81 100644
--- a/lib/Transforms/ObjCARC/ObjCARC.h
+++ b/lib/Transforms/ObjCARC/ObjCARC.h
@@ -264,11 +264,11 @@ static inline Value *GetObjCArg(Value *Inst) {
   return StripPointerCastsAndObjCCalls(cast<CallInst>(Inst)->getArgOperand(0));
 }
 
-static inline bool isNullOrUndef(const Value *V) {
+static inline bool IsNullOrUndef(const Value *V) {
   return isa<ConstantPointerNull>(V) || isa<UndefValue>(V);
 }
 
-static inline bool isNoopInstruction(const Instruction *I) {
+static inline bool IsNoopInstruction(const Instruction *I) {
   return isa<BitCastInst>(I) ||
     (isa<GetElementPtrInst>(I) &&
      cast<GetElementPtrInst>(I)->hasAllZeroIndices());
diff --git a/lib/Transforms/ObjCARC/ObjCARCContract.cpp b/lib/Transforms/ObjCARC/ObjCARCContract.cpp
index 5d0865e8bea..b96c64fe81d 100644
--- a/lib/Transforms/ObjCARC/ObjCARCContract.cpp
+++ b/lib/Transforms/ObjCARC/ObjCARCContract.cpp
@@ -410,7 +410,7 @@ bool ObjCARCContract::runOnFunction(Function &F) {
           break;
         }
         --BBI;
-      } while (isNoopInstruction(BBI));
+      } while (IsNoopInstruction(BBI));
 
       if (&*BBI == GetObjCArg(Inst)) {
         DEBUG(dbgs() << "ObjCARCContract: Adding inline asm marker for "
@@ -429,7 +429,7 @@ bool ObjCARCContract::runOnFunction(Function &F) {
     case IC_InitWeak: {
       // objc_initWeak(p, null) => *p = null
       CallInst *CI = cast<CallInst>(Inst);
-      if (isNullOrUndef(CI->getArgOperand(1))) {
+      if (IsNullOrUndef(CI->getArgOperand(1))) {
         Value *Null =
           ConstantPointerNull::get(cast<PointerType>(CI->getType()));
         Changed = true;
diff --git a/lib/Transforms/ObjCARC/ObjCARCOpts.cpp b/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
index 88ac8a20665..27bc2bb5312 100644
--- a/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
+++ b/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
@@ -961,7 +961,7 @@ ObjCARCOpt::OptimizeRetainCall(Function &F, Instruction *Retain) {
   // Check that the call is next to the retain.
   BasicBlock::const_iterator I = Call;
   ++I;
-  while (isNoopInstruction(I)) ++I;
+  while (IsNoopInstruction(I)) ++I;
   if (&*I != Retain)
     return;
 
@@ -993,14 +993,14 @@ ObjCARCOpt::OptimizeRetainRVCall(Function &F, Instruction *RetainRV) {
     if (Call->getParent() == RetainRV->getParent()) {
       BasicBlock::const_iterator I = Call;
       ++I;
-      while (isNoopInstruction(I)) ++I;
+      while (IsNoopInstruction(I)) ++I;
       if (&*I == RetainRV)
         return false;
     } else if (const InvokeInst *II = dyn_cast<InvokeInst>(Call)) {
       BasicBlock *RetainRVParent = RetainRV->getParent();
       if (II->getNormalDest() == RetainRVParent) {
         BasicBlock::const_iterator I = RetainRVParent->begin();
-        while (isNoopInstruction(I)) ++I;
+        while (IsNoopInstruction(I)) ++I;
         if (&*I == RetainRV)
           return false;
       }
@@ -1011,7 +1011,7 @@ ObjCARCOpt::OptimizeRetainRVCall(Function &F, Instruction *RetainRV) {
   // pointer. In this case, we can delete the pair.
   BasicBlock::iterator I = RetainRV, Begin = RetainRV->getParent()->begin();
   if (I != Begin) {
-    do --I; while (I != Begin && isNoopInstruction(I));
+    do --I; while (I != Begin && IsNoopInstruction(I));
     if (GetBasicInstructionClass(I) == IC_AutoreleaseRV &&
         GetObjCArg(I) == Arg) {
       Changed = true;
@@ -1128,7 +1128,7 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
     case IC_InitWeak:
     case IC_DestroyWeak: {
       CallInst *CI = cast<CallInst>(Inst);
-      if (isNullOrUndef(CI->getArgOperand(0))) {
+      if (IsNullOrUndef(CI->getArgOperand(0))) {
         Changed = true;
         Type *Ty = CI->getArgOperand(0)->getType();
         new StoreInst(UndefValue::get(cast<PointerType>(Ty)->getElementType()),
@@ -1149,8 +1149,8 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
     case IC_CopyWeak:
     case IC_MoveWeak: {
       CallInst *CI = cast<CallInst>(Inst);
-      if (isNullOrUndef(CI->getArgOperand(0)) ||
-          isNullOrUndef(CI->getArgOperand(1))) {
+      if (IsNullOrUndef(CI->getArgOperand(0)) ||
+          IsNullOrUndef(CI->getArgOperand(1))) {
         Changed = true;
         Type *Ty = CI->getArgOperand(0)->getType();
         new StoreInst(UndefValue::get(cast<PointerType>(Ty)->getElementType()),
@@ -1248,7 +1248,7 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
     const Value *Arg = GetObjCArg(Inst);
 
     // ARC calls with null are no-ops. Delete them.
-    if (isNullOrUndef(Arg)) {
+    if (IsNullOrUndef(Arg)) {
       Changed = true;
       ++NumNoops;
       DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: ARC calls with "
@@ -1283,7 +1283,7 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
       for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) {
         Value *Incoming =
           StripPointerCastsAndObjCCalls(PN->getIncomingValue(i));
-        if (isNullOrUndef(Incoming))
+        if (IsNullOrUndef(Incoming))
           HasNull = true;
         else if (cast<TerminatorInst>(PN->getIncomingBlock(i)->back())
                    .getNumSuccessors() != 1) {
@@ -1337,7 +1337,7 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
           for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) {
             Value *Incoming =
               StripPointerCastsAndObjCCalls(PN->getIncomingValue(i));
-            if (!isNullOrUndef(Incoming)) {
+            if (!IsNullOrUndef(Incoming)) {
               CallInst *Clone = cast<CallInst>(CInst->clone());
               Value *Op = PN->getIncomingValue(i);
               Instruction *InsertPos = &PN->getIncomingBlock(i)->back();