diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp
index c1cc00b68d6..294b70a8d4f 100644
--- a/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -867,14 +867,14 @@ private:
       if (isPowerOf2_32(Val) && Val <= MaxVectorWidth)
         Width = Val;
       else
-        DEBUG(dbgs() << "LV: ignoring invalid width hint metadata");
+        DEBUG(dbgs() << "LV: ignoring invalid width hint metadata\n");
     } else if (Hint == "unroll") {
       if (isPowerOf2_32(Val) && Val <= MaxUnrollFactor)
         Unroll = Val;
       else
-        DEBUG(dbgs() << "LV: ignoring invalid unroll hint metadata");
+        DEBUG(dbgs() << "LV: ignoring invalid unroll hint metadata\n");
     } else {
-      DEBUG(dbgs() << "LV: ignoring unknown hint " << Hint);
+      DEBUG(dbgs() << "LV: ignoring unknown hint " << Hint << '\n');
     }
   }
 };
@@ -915,7 +915,7 @@ struct LoopVectorize : public LoopPass {
       return false;
 
     if (DL == NULL) {
-      DEBUG(dbgs() << "LV: Not vectorizing because of missing data layout");
+      DEBUG(dbgs() << "LV: Not vectorizing because of missing data layout\n");
       return false;
     }
 
@@ -966,8 +966,8 @@ struct LoopVectorize : public LoopPass {
     }
 
     DEBUG(dbgs() << "LV: Found a vectorizable loop ("<< VF.Width << ") in "<<
-          F->getParent()->getModuleIdentifier()<<"\n");
-    DEBUG(dbgs() << "LV: Unroll Factor is " << UF << "\n");
+          F->getParent()->getModuleIdentifier() << '\n');
+    DEBUG(dbgs() << "LV: Unroll Factor is " << UF << '\n');
 
     if (VF.Width == 1) {
       if (UF == 1)
@@ -1400,7 +1400,7 @@ InnerLoopVectorizer::addRuntimeCheck(LoopVectorizationLegality *Legal,
       Starts.push_back(Ptr);
       Ends.push_back(Ptr);
     } else {
-      DEBUG(dbgs() << "LV: Adding RT check for range:" << *Ptr <<"\n");
+      DEBUG(dbgs() << "LV: Adding RT check for range:" << *Ptr << '\n');
 
       Value *Start = Exp.expandCodeFor(PtrRtCheck->Starts[i], PtrArithTy, Loc);
       Value *End = Exp.expandCodeFor(PtrRtCheck->Ends[i], PtrArithTy, Loc);
@@ -2745,7 +2745,7 @@ bool LoopVectorizationLegality::canVectorize() {
   // We need to have a loop header.
   BasicBlock *Latch = TheLoop->getLoopLatch();
   DEBUG(dbgs() << "LV: Found a loop: " <<
-        TheLoop->getHeader()->getName() << "\n");
+        TheLoop->getHeader()->getName() << '\n');
 
   // ScalarEvolution needs to be able to find the exit count.
   const SCEV *ExitCount = SE->getBackedgeTakenCount(TheLoop);
@@ -2815,7 +2815,7 @@ static bool hasOutsideLoopUser(const Loop *TheLoop, Instruction *Inst,
       Instruction *U = cast<Instruction>(*I);
       // This user may be a reduction exit value.
       if (!TheLoop->contains(U)) {
-        DEBUG(dbgs() << "LV: Found an outside user for : "<< *U << "\n");
+        DEBUG(dbgs() << "LV: Found an outside user for : " << *U << '\n');
         return true;
       }
     }
@@ -2953,7 +2953,7 @@ bool LoopVectorizationLegality::canVectorizeInstrs() {
       // Check that the instruction return type is vectorizable.
       if (!VectorType::isValidElementType(it->getType()) &&
           !it->getType()->isVoidTy()) {
-        DEBUG(dbgs() << "LV: Found unvectorizable type." << "\n");
+        DEBUG(dbgs() << "LV: Found unvectorizable type.\n");
         return false;
       }
 
@@ -3158,7 +3158,7 @@ bool AccessAnalysis::canCheckPtrAtRT(
 
       RtCheck.insert(SE, TheLoop, Ptr, IsWrite, DepId);
 
-      DEBUG(dbgs() << "LV: Found a runtime check ptr:" << *Ptr <<"\n");
+      DEBUG(dbgs() << "LV: Found a runtime check ptr:" << *Ptr << '\n');
     } else {
       CanDoRT = false;
     }
@@ -3223,7 +3223,7 @@ void AccessAnalysis::processMemAccesses(bool UseDeferred) {
                         !isa<Argument>(UnderlyingObj)) &&
            !isIdentifiedObject(UnderlyingObj))) {
         DEBUG(dbgs() << "LV: Found an unidentified " <<
-              (IsWrite ?  "write" : "read" ) << " ptr:" << *UnderlyingObj <<
+              (IsWrite ?  "write" : "read" ) << " ptr: " << *UnderlyingObj <<
               "\n");
         IsRTCheckNeeded = (IsRTCheckNeeded ||
                            !isIdentifiedObject(UnderlyingObj) ||
@@ -3567,7 +3567,7 @@ bool MemoryDepChecker::isDependent(const MemAccessInfo &A, unsigned AIdx,
   if (Val == 0) {
     if (ATy == BTy)
       return false;
-    DEBUG(dbgs() << "LV: Zero dependence difference but different types");
+    DEBUG(dbgs() << "LV: Zero dependence difference but different types\n");
     return true;
   }
 
@@ -3576,7 +3576,7 @@ bool MemoryDepChecker::isDependent(const MemAccessInfo &A, unsigned AIdx,
   // Positive distance bigger than max vectorization factor.
   if (ATy != BTy) {
     DEBUG(dbgs() <<
-          "LV: ReadWrite-Write positive dependency with different types");
+          "LV: ReadWrite-Write positive dependency with different types\n");
     return false;
   }
 
@@ -3593,7 +3593,7 @@ bool MemoryDepChecker::isDependent(const MemAccessInfo &A, unsigned AIdx,
       2*TypeByteSize > MaxSafeDepDistBytes ||
       Distance < TypeByteSize * ForcedUnroll * ForcedFactor) {
     DEBUG(dbgs() << "LV: Failure because of Positive distance "
-        << Val.getSExtValue() << "\n");
+        << Val.getSExtValue() << '\n');
     return true;
   }
 
@@ -3606,7 +3606,7 @@ bool MemoryDepChecker::isDependent(const MemAccessInfo &A, unsigned AIdx,
      return true;
 
   DEBUG(dbgs() << "LV: Positive distance " << Val.getSExtValue() <<
-        " with max VF=" << MaxSafeDepDistBytes/TypeByteSize << "\n");
+        " with max VF = " << MaxSafeDepDistBytes / TypeByteSize << '\n');
 
   return false;
 }
@@ -3833,7 +3833,7 @@ bool LoopVectorizationLegality::canVectorizeMemory() {
     MaxSafeDepDistBytes = DepChecker.getMaxSafeDepDistBytes();
   }
 
-  DEBUG(dbgs() << "LV: We "<< (NeedRTCheck ? "" : "don't") <<
+  DEBUG(dbgs() << "LV: We" << (NeedRTCheck ? "" : " don't") <<
         " need a runtime memory check.\n");
 
   return CanVecMem;
@@ -4209,7 +4209,7 @@ LoopVectorizationCostModel::selectVectorizationFactor(bool OptForSize,
 
   // Find the trip count.
   unsigned TC = SE->getSmallConstantTripCount(TheLoop, TheLoop->getLoopLatch());
-  DEBUG(dbgs() << "LV: Found trip count:"<<TC<<"\n");
+  DEBUG(dbgs() << "LV: Found trip count: " << TC << '\n');
 
   unsigned WidestType = getWidestType();
   unsigned WidestRegister = TTI.getRegisterBitWidth(true);
@@ -4220,7 +4220,8 @@ LoopVectorizationCostModel::selectVectorizationFactor(bool OptForSize,
                     WidestRegister : MaxSafeDepDist);
   unsigned MaxVectorSize = WidestRegister / WidestType;
   DEBUG(dbgs() << "LV: The Widest type: " << WidestType << " bits.\n");
-  DEBUG(dbgs() << "LV: The Widest register is:" << WidestRegister << "bits.\n");
+  DEBUG(dbgs() << "LV: The Widest register is: "
+          << WidestRegister << " bits.\n");
 
   if (MaxVectorSize == 0) {
     DEBUG(dbgs() << "LV: The target has no vector registers.\n");
@@ -4256,7 +4257,7 @@ LoopVectorizationCostModel::selectVectorizationFactor(bool OptForSize,
 
   if (UserVF != 0) {
     assert(isPowerOf2_32(UserVF) && "VF needs to be a power of two");
-    DEBUG(dbgs() << "LV: Using user VF "<<UserVF<<".\n");
+    DEBUG(dbgs() << "LV: Using user VF " << UserVF << ".\n");
 
     Factor.Width = UserVF;
     return Factor;
@@ -4264,13 +4265,13 @@ LoopVectorizationCostModel::selectVectorizationFactor(bool OptForSize,
 
   float Cost = expectedCost(1);
   unsigned Width = 1;
-  DEBUG(dbgs() << "LV: Scalar loop costs: "<< (int)Cost << ".\n");
+  DEBUG(dbgs() << "LV: Scalar loop costs: " << (int)Cost << ".\n");
   for (unsigned i=2; i <= VF; i*=2) {
     // Notice that the vector loop needs to be executed less times, so
     // we need to divide the cost of the vector loops by the width of
     // the vector elements.
     float VectorCost = expectedCost(i) / (float)i;
-    DEBUG(dbgs() << "LV: Vector loop of width "<< i << " costs: " <<
+    DEBUG(dbgs() << "LV: Vector loop of width " << i << " costs: " <<
           (int)VectorCost << ".\n");
     if (VectorCost < Cost) {
       Cost = VectorCost;
@@ -4407,7 +4408,7 @@ LoopVectorizationCostModel::selectUnrollFactor(bool OptForSize,
   }
 
   if (HasReductions) {
-    DEBUG(dbgs() << "LV: Unrolling because of reductions. \n");
+    DEBUG(dbgs() << "LV: Unrolling because of reductions.\n");
     return UF;
   }
 
@@ -4415,14 +4416,14 @@ LoopVectorizationCostModel::selectUnrollFactor(bool OptForSize,
   // We assume that the cost overhead is 1 and we use the cost model
   // to estimate the cost of the loop and unroll until the cost of the
   // loop overhead is about 5% of the cost of the loop.
-  DEBUG(dbgs() << "LV: Loop cost is "<< LoopCost <<" \n");
+  DEBUG(dbgs() << "LV: Loop cost is " << LoopCost << '\n');
   if (LoopCost < SmallLoopCost) {
-    DEBUG(dbgs() << "LV: Unrolling to reduce branch cost. \n");
+    DEBUG(dbgs() << "LV: Unrolling to reduce branch cost.\n");
     unsigned NewUF = SmallLoopCost / (LoopCost + 1);
     return std::min(NewUF, UF);
   }
 
-  DEBUG(dbgs() << "LV: Not Unrolling. \n");
+  DEBUG(dbgs() << "LV: Not Unrolling.\n");
   return 1;
 }
 
@@ -4523,16 +4524,16 @@ LoopVectorizationCostModel::calculateRegisterUsage() {
     MaxUsage = std::max(MaxUsage, OpenIntervals.size());
 
     DEBUG(dbgs() << "LV(REG): At #" << i << " Interval # " <<
-          OpenIntervals.size() <<"\n");
+          OpenIntervals.size() << '\n');
 
     // Add the current instruction to the list of open intervals.
     OpenIntervals.insert(I);
   }
 
   unsigned Invariant = LoopInvariants.size();
-  DEBUG(dbgs() << "LV(REG): Found max usage: " << MaxUsage << " \n");
-  DEBUG(dbgs() << "LV(REG): Found invariant usage: " << Invariant << " \n");
-  DEBUG(dbgs() << "LV(REG): LoopSize: " << R.NumInstructions << " \n");
+  DEBUG(dbgs() << "LV(REG): Found max usage: " << MaxUsage << '\n');
+  DEBUG(dbgs() << "LV(REG): Found invariant usage: " << Invariant << '\n');
+  DEBUG(dbgs() << "LV(REG): LoopSize: " << R.NumInstructions << '\n');
 
   R.LoopInvariantRegs = Invariant;
   R.MaxLocalUsers = MaxUsage;
@@ -4556,8 +4557,8 @@ unsigned LoopVectorizationCostModel::expectedCost(unsigned VF) {
 
       unsigned C = getInstructionCost(it, VF);
       BlockCost += C;
-      DEBUG(dbgs() << "LV: Found an estimated cost of "<< C <<" for VF " <<
-            VF << " For instruction: "<< *it << "\n");
+      DEBUG(dbgs() << "LV: Found an estimated cost of " << C << " for VF " <<
+            VF << " For instruction: " << *it << '\n');
     }
 
     // We assume that if-converted blocks have a 50% chance of being executed.