diff --git a/lib/Target/NVPTX/ManagedStringPool.h b/lib/Target/NVPTX/ManagedStringPool.h
index a2d670f8d39..7fc0156216f 100644
--- a/lib/Target/NVPTX/ManagedStringPool.h
+++ b/lib/Target/NVPTX/ManagedStringPool.h
@@ -27,7 +27,8 @@ class ManagedStringPool {
   SmallVector<std::string *, 8> Pool;
 
 public:
-  ManagedStringPool() {}
+  ManagedStringPool() = default;
+
   ~ManagedStringPool() {
     SmallVectorImpl<std::string *>::iterator Current = Pool.begin();
     while (Current != Pool.end()) {
@@ -43,6 +44,6 @@ public:
   }
 };
 
-}
+} // end namespace llvm
 
-#endif
+#endif // LLVM_LIB_TARGET_NVPTX_MANAGEDSTRINGPOOL_H
diff --git a/lib/Target/NVPTX/NVPTXAsmPrinter.cpp b/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
index 04c8d5c0443..3c2594c77f4 100644
--- a/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
+++ b/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
@@ -12,42 +12,83 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "NVPTXAsmPrinter.h"
 #include "InstPrinter/NVPTXInstPrinter.h"
+#include "MCTargetDesc/NVPTXBaseInfo.h"
 #include "MCTargetDesc/NVPTXMCAsmInfo.h"
 #include "NVPTX.h"
-#include "NVPTXInstrInfo.h"
+#include "NVPTXAsmPrinter.h"
 #include "NVPTXMCExpr.h"
 #include "NVPTXMachineFunctionInfo.h"
 #include "NVPTXRegisterInfo.h"
+#include "NVPTXSubtarget.h"
 #include "NVPTXTargetMachine.h"
 #include "NVPTXUtilities.h"
 #include "cl_common_defines.h"
+#include "llvm/ADT/APFloat.h"
+#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/Analysis/ConstantFolding.h"
 #include "llvm/CodeGen/Analysis.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineLoopInfo.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/MachineOperand.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/MachineValueType.h"
+#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/IR/Attributes.h"
+#include "llvm/IR/BasicBlock.h"
+#include "llvm/IR/Constant.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DebugInfo.h"
+#include "llvm/IR/DebugInfoMetadata.h"
+#include "llvm/IR/DebugLoc.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalValue.h"
 #include "llvm/IR/GlobalVariable.h"
-#include "llvm/IR/Mangler.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Operator.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/User.h"
+#include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCInstrDesc.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
 #include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/TargetRegistry.h"
+#include "llvm/Target/TargetLowering.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Transforms/Utils/UnrollLoop.h"
+#include <cassert>
+#include <cstdint>
+#include <cstring>
+#include <new>
 #include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+
 using namespace llvm;
 
 #define DEPOTNAME "__local_depot"
@@ -62,11 +103,11 @@ InterleaveSrc("nvptx-emit-src", cl::ZeroOrMore, cl::Hidden,
               cl::desc("NVPTX Specific: Emit source line in ptx file"),
               cl::init(false));
 
-namespace {
 /// DiscoverDependentGlobals - Return a set of GlobalVariables on which \p V
 /// depends.
-void DiscoverDependentGlobals(const Value *V,
-                              DenseSet<const GlobalVariable *> &Globals) {
+static void
+DiscoverDependentGlobals(const Value *V,
+                         DenseSet<const GlobalVariable *> &Globals) {
   if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
     Globals.insert(GV);
   else {
@@ -80,11 +121,12 @@ void DiscoverDependentGlobals(const Value *V,
 
 /// VisitGlobalVariableForEmission - Add \p GV to the list of GlobalVariable
 /// instances to be emitted, but only after any dependents have been added
-/// first.
-void VisitGlobalVariableForEmission(
-    const GlobalVariable *GV, SmallVectorImpl<const GlobalVariable *> &Order,
-    DenseSet<const GlobalVariable *> &Visited,
-    DenseSet<const GlobalVariable *> &Visiting) {
+/// first.s
+static void
+VisitGlobalVariableForEmission(const GlobalVariable *GV,
+                               SmallVectorImpl<const GlobalVariable *> &Order,
+                               DenseSet<const GlobalVariable *> &Visited,
+                               DenseSet<const GlobalVariable *> &Visiting) {
   // Have we already visited this one?
   if (Visited.count(GV))
     return;
@@ -108,7 +150,6 @@ void VisitGlobalVariableForEmission(
   Visited.insert(GV);
   Visiting.erase(GV);
 }
-}
 
 void NVPTXAsmPrinter::emitLineNumberAsDotLoc(const MachineInstr &MI) {
   if (!EmitLineNumbers)
@@ -369,7 +410,7 @@ void NVPTXAsmPrinter::printReturnValStr(const Function *F, raw_ostream &O) {
     } else if (Ty->isAggregateType() || Ty->isVectorTy()) {
       unsigned totalsz = DL.getTypeAllocSize(Ty);
       unsigned retAlignment = 0;
-      if (!llvm::getAlign(*F, 0, retAlignment))
+      if (!getAlign(*F, 0, retAlignment))
         retAlignment = DL.getABITypeAlignment(Ty);
       O << ".param .align " << retAlignment << " .b8 func_retval0[" << totalsz
         << "]";
@@ -401,7 +442,6 @@ void NVPTXAsmPrinter::printReturnValStr(const Function *F, raw_ostream &O) {
     }
   }
   O << ") ";
-  return;
 }
 
 void NVPTXAsmPrinter::printReturnValStr(const MachineFunction &MF,
@@ -459,7 +499,7 @@ void NVPTXAsmPrinter::EmitFunctionEntryLabel() {
   MRI = &MF->getRegInfo();
   F = MF->getFunction();
   emitLinkageDirective(F, O);
-  if (llvm::isKernelFunction(*F))
+  if (isKernelFunction(*F))
     O << ".entry ";
   else {
     O << ".func ";
@@ -470,7 +510,7 @@ void NVPTXAsmPrinter::EmitFunctionEntryLabel() {
 
   emitFunctionParamList(*MF, O);
 
-  if (llvm::isKernelFunction(*F))
+  if (isKernelFunction(*F))
     emitKernelFunctionDirectives(*F, O);
 
   OutStreamer->EmitRawText(O.str());
@@ -513,15 +553,15 @@ void NVPTXAsmPrinter::emitKernelFunctionDirectives(const Function &F,
   // If none of reqntid* is specified, don't output reqntid directive.
   unsigned reqntidx, reqntidy, reqntidz;
   bool specified = false;
-  if (!llvm::getReqNTIDx(F, reqntidx))
+  if (!getReqNTIDx(F, reqntidx))
     reqntidx = 1;
   else
     specified = true;
-  if (!llvm::getReqNTIDy(F, reqntidy))
+  if (!getReqNTIDy(F, reqntidy))
     reqntidy = 1;
   else
     specified = true;
-  if (!llvm::getReqNTIDz(F, reqntidz))
+  if (!getReqNTIDz(F, reqntidz))
     reqntidz = 1;
   else
     specified = true;
@@ -535,15 +575,15 @@ void NVPTXAsmPrinter::emitKernelFunctionDirectives(const Function &F,
   // If none of maxntid* is specified, don't output maxntid directive.
   unsigned maxntidx, maxntidy, maxntidz;
   specified = false;
-  if (!llvm::getMaxNTIDx(F, maxntidx))
+  if (!getMaxNTIDx(F, maxntidx))
     maxntidx = 1;
   else
     specified = true;
-  if (!llvm::getMaxNTIDy(F, maxntidy))
+  if (!getMaxNTIDy(F, maxntidy))
     maxntidy = 1;
   else
     specified = true;
-  if (!llvm::getMaxNTIDz(F, maxntidz))
+  if (!getMaxNTIDz(F, maxntidz))
     maxntidz = 1;
   else
     specified = true;
@@ -553,11 +593,11 @@ void NVPTXAsmPrinter::emitKernelFunctionDirectives(const Function &F,
       << "\n";
 
   unsigned mincta;
-  if (llvm::getMinCTASm(F, mincta))
+  if (getMinCTASm(F, mincta))
     O << ".minnctapersm " << mincta << "\n";
 
   unsigned maxnreg;
-  if (llvm::getMaxNReg(F, maxnreg))
+  if (getMaxNReg(F, maxnreg))
     O << ".maxnreg " << maxnreg << "\n";
 }
 
@@ -617,12 +657,9 @@ void NVPTXAsmPrinter::printVecModifiedImmediate(
     llvm_unreachable("Unknown Modifier on immediate operand");
 }
 
-
-
 void NVPTXAsmPrinter::emitDeclaration(const Function *F, raw_ostream &O) {
-
   emitLinkageDirective(F, O);
-  if (llvm::isKernelFunction(*F))
+  if (isKernelFunction(*F))
     O << ".entry ";
   else
     O << ".func ";
@@ -684,7 +721,7 @@ static bool canDemoteGlobalVar(const GlobalVariable *gv, Function const *&f) {
   if (!gv->hasInternalLinkage())
     return false;
   PointerType *Pty = gv->getType();
-  if (Pty->getAddressSpace() != llvm::ADDRESS_SPACE_SHARED)
+  if (Pty->getAddressSpace() != ADDRESS_SPACE_SHARED)
     return false;
 
   const Function *oneFunc = nullptr;
@@ -699,7 +736,7 @@ static bool canDemoteGlobalVar(const GlobalVariable *gv, Function const *&f) {
 }
 
 static bool useFuncSeen(const Constant *C,
-                        llvm::DenseMap<const Function *, bool> &seenMap) {
+                        DenseMap<const Function *, bool> &seenMap) {
   for (const User *U : C->users()) {
     if (const Constant *cu = dyn_cast<Constant>(U)) {
       if (useFuncSeen(cu, seenMap))
@@ -719,7 +756,7 @@ static bool useFuncSeen(const Constant *C,
 }
 
 void NVPTXAsmPrinter::emitDeclarations(const Module &M, raw_ostream &O) {
-  llvm::DenseMap<const Function *, bool> seenMap;
+  DenseMap<const Function *, bool> seenMap;
   for (Module::const_iterator FI = M.begin(), FE = M.end(); FI != FE; ++FI) {
     const Function *F = &*FI;
 
@@ -1040,7 +1077,6 @@ void NVPTXAsmPrinter::emitLinkageDirective(const GlobalValue *V,
 void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
                                          raw_ostream &O,
                                          bool processDemoted) {
-
   // Skip meta data
   if (GVar->hasSection()) {
     if (GVar->getSection() == "llvm.metadata")
@@ -1069,13 +1105,13 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
     O << ".weak ";
   }
 
-  if (llvm::isTexture(*GVar)) {
-    O << ".global .texref " << llvm::getTextureName(*GVar) << ";\n";
+  if (isTexture(*GVar)) {
+    O << ".global .texref " << getTextureName(*GVar) << ";\n";
     return;
   }
 
-  if (llvm::isSurface(*GVar)) {
-    O << ".global .surfref " << llvm::getSurfaceName(*GVar) << ";\n";
+  if (isSurface(*GVar)) {
+    O << ".global .surfref " << getSurfaceName(*GVar) << ";\n";
     return;
   }
 
@@ -1088,8 +1124,8 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
     return;
   }
 
-  if (llvm::isSampler(*GVar)) {
-    O << ".global .samplerref " << llvm::getSamplerName(*GVar);
+  if (isSampler(*GVar)) {
+    O << ".global .samplerref " << getSamplerName(*GVar);
 
     const Constant *Initializer = nullptr;
     if (GVar->hasInitializer())
@@ -1150,12 +1186,11 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
   }
 
   if (GVar->hasPrivateLinkage()) {
-
-    if (!strncmp(GVar->getName().data(), "unrollpragma", 12))
+    if (strncmp(GVar->getName().data(), "unrollpragma", 12) == 0)
       return;
 
     // FIXME - need better way (e.g. Metadata) to avoid generating this global
-    if (!strncmp(GVar->getName().data(), "filename", 8))
+    if (strncmp(GVar->getName().data(), "filename", 8) == 0)
       return;
     if (GVar->use_empty())
       return;
@@ -1199,8 +1234,8 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
     // Ptx allows variable initilization only for constant and global state
     // spaces.
     if (GVar->hasInitializer()) {
-      if ((PTy->getAddressSpace() == llvm::ADDRESS_SPACE_GLOBAL) ||
-          (PTy->getAddressSpace() == llvm::ADDRESS_SPACE_CONST)) {
+      if ((PTy->getAddressSpace() == ADDRESS_SPACE_GLOBAL) ||
+          (PTy->getAddressSpace() == ADDRESS_SPACE_CONST)) {
         const Constant *Initializer = GVar->getInitializer();
         // 'undef' is treated as there is no value specified.
         if (!Initializer->isNullValue() && !isa<UndefValue>(Initializer)) {
@@ -1233,8 +1268,8 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
       ElementSize = DL.getTypeStoreSize(ETy);
       // Ptx allows variable initilization only for constant and
       // global state spaces.
-      if (((PTy->getAddressSpace() == llvm::ADDRESS_SPACE_GLOBAL) ||
-           (PTy->getAddressSpace() == llvm::ADDRESS_SPACE_CONST)) &&
+      if (((PTy->getAddressSpace() == ADDRESS_SPACE_GLOBAL) ||
+           (PTy->getAddressSpace() == ADDRESS_SPACE_CONST)) &&
           GVar->hasInitializer()) {
         const Constant *Initializer = GVar->getInitializer();
         if (!isa<UndefValue>(Initializer) && !Initializer->isNullValue()) {
@@ -1285,7 +1320,6 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
     default:
       llvm_unreachable("type not supported yet");
     }
-
   }
   O << ";\n";
 }
@@ -1305,16 +1339,16 @@ void NVPTXAsmPrinter::emitDemotedVars(const Function *f, raw_ostream &O) {
 void NVPTXAsmPrinter::emitPTXAddressSpace(unsigned int AddressSpace,
                                           raw_ostream &O) const {
   switch (AddressSpace) {
-  case llvm::ADDRESS_SPACE_LOCAL:
+  case ADDRESS_SPACE_LOCAL:
     O << "local";
     break;
-  case llvm::ADDRESS_SPACE_GLOBAL:
+  case ADDRESS_SPACE_GLOBAL:
     O << "global";
     break;
-  case llvm::ADDRESS_SPACE_CONST:
+  case ADDRESS_SPACE_CONST:
     O << "const";
     break;
-  case llvm::ADDRESS_SPACE_SHARED:
+  case ADDRESS_SPACE_SHARED:
     O << "shared";
     break;
   default:
@@ -1363,7 +1397,6 @@ NVPTXAsmPrinter::getPTXFundamentalTypeStr(Type *Ty, bool useB4PTR) const {
 
 void NVPTXAsmPrinter::emitPTXGlobalVariable(const GlobalVariable *GVar,
                                             raw_ostream &O) {
-
   const DataLayout &DL = getDataLayout();
 
   // GlobalVariables are always constant pointers themselves.
@@ -1406,7 +1439,6 @@ void NVPTXAsmPrinter::emitPTXGlobalVariable(const GlobalVariable *GVar,
   default:
     llvm_unreachable("type not supported yet");
   }
-  return;
 }
 
 static unsigned int getOpenCLAlignment(const DataLayout &DL, Type *Ty) {
@@ -1450,7 +1482,7 @@ void NVPTXAsmPrinter::emitFunctionParamList(const Function *F, raw_ostream &O) {
   Function::const_arg_iterator I, E;
   unsigned paramIndex = 0;
   bool first = true;
-  bool isKernelFunc = llvm::isKernelFunction(*F);
+  bool isKernelFunc = isKernelFunction(*F);
   bool isABI = (nvptxSubtarget->getSmVersion() >= 20);
   MVT thePointerTy = TLI->getPointerTy(DL);
 
@@ -1533,13 +1565,13 @@ void NVPTXAsmPrinter::emitFunctionParamList(const Function *F, raw_ostream &O) {
             default:
               O << ".ptr ";
               break;
-            case llvm::ADDRESS_SPACE_CONST:
+            case ADDRESS_SPACE_CONST:
               O << ".ptr .const ";
               break;
-            case llvm::ADDRESS_SPACE_SHARED:
+            case ADDRESS_SPACE_SHARED:
               O << ".ptr .shared ";
               break;
-            case llvm::ADDRESS_SPACE_GLOBAL:
+            case ADDRESS_SPACE_GLOBAL:
               O << ".ptr .global ";
               break;
             }
@@ -1820,7 +1852,6 @@ static void ConvertDoubleToBytes(unsigned char *p, double val) {
 
 void NVPTXAsmPrinter::bufferLEByte(const Constant *CPV, int Bytes,
                                    AggBuffer *aggBuffer) {
-
   const DataLayout &DL = getDataLayout();
 
   if (isa<UndefValue>(CPV) || CPV->isNullValue()) {
@@ -1985,7 +2016,6 @@ void NVPTXAsmPrinter::bufferAggregateConstant(const Constant *CPV,
 // buildTypeNameMap - Run through symbol table looking for type names.
 //
 
-
 bool NVPTXAsmPrinter::ignoreLoc(const MachineInstr &MI) {
   switch (MI.getOpcode()) {
   default:
@@ -2100,7 +2130,7 @@ NVPTXAsmPrinter::lowerConstantForGV(const Constant *CV, bool ProcessingGeneric)
     raw_string_ostream OS(S);
     OS << "Unsupported expression in static initializer: ";
     CE->printAsOperand(OS, /*PrintType=*/ false,
-                       !MF ? 0 : MF->getFunction()->getParent());
+                       !MF ? nullptr : MF->getFunction()->getParent());
     report_fatal_error(OS.str());
   }
 
@@ -2330,7 +2360,7 @@ void NVPTXAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
                                       raw_ostream &O, const char *Modifier) {
   printOperand(MI, opNum, O);
 
-  if (Modifier && !strcmp(Modifier, "add")) {
+  if (Modifier && strcmp(Modifier, "add") == 0) {
     O << ", ";
     printOperand(MI, opNum + 1, O);
   } else {
diff --git a/lib/Target/NVPTX/NVPTXAsmPrinter.h b/lib/Target/NVPTX/NVPTXAsmPrinter.h
index 3dcc0e358a1..8ec3476b871 100644
--- a/lib/Target/NVPTX/NVPTXAsmPrinter.h
+++ b/lib/Target/NVPTX/NVPTXAsmPrinter.h
@@ -1,4 +1,4 @@
-//===-- NVPTXAsmPrinter.h - NVPTX LLVM assembly writer --------------------===//
+//===-- NVPTXAsmPrinter.h - NVPTX LLVM assembly writer ----------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -18,17 +18,34 @@
 #include "NVPTX.h"
 #include "NVPTXSubtarget.h"
 #include "NVPTXTargetMachine.h"
-#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
 #include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineLoopInfo.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DebugLoc.h"
+#include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
-#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/Value.h"
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/FormattedStream.h"
+#include "llvm/PassAnalysisSupport.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
+#include <algorithm>
+#include <cassert>
 #include <fstream>
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
 
 // The ptx syntax and format is very different from that usually seem in a .s
 // file,
@@ -40,7 +57,8 @@
 // (subclass of MCStreamer).
 
 namespace llvm {
-  class MCOperand;
+
+class MCOperand;
 
 class LineReader {
 private:
@@ -49,14 +67,17 @@ private:
   char buff[512];
   std::string theFileName;
   SmallVector<unsigned, 32> lineOffset;
+
 public:
   LineReader(std::string filename) {
     theCurLine = 0;
     fstr.open(filename.c_str());
     theFileName = filename;
   }
-  std::string fileName() { return theFileName; }
+
   ~LineReader() { fstr.close(); }
+
+  std::string fileName() { return theFileName; }
   std::string readLine(unsigned line);
 };
 
@@ -107,6 +128,7 @@ class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter {
       numSymbols = 0;
       EmitGeneric = AP.EmitGeneric;
     }
+
     unsigned addBytes(unsigned char *Ptr, int Num, int Bytes) {
       assert((curpos + Num) <= size);
       assert((curpos + Bytes) <= size);
@@ -120,6 +142,7 @@ class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter {
       }
       return curpos;
     }
+
     unsigned addZeros(int Num) {
       assert((curpos + Num) <= size);
       for (int i = 0; i < Num; ++i) {
@@ -128,12 +151,14 @@ class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter {
       }
       return curpos;
     }
+
     void addSymbol(const Value *GVar, const Value *GVarBeforeStripping) {
       symbolPosInBuffer.push_back(curpos);
       Symbols.push_back(GVar);
       SymbolsBeforeStripping.push_back(GVarBeforeStripping);
       numSymbols++;
     }
+
     void print() {
       if (numSymbols == 0) {
         // print out in bytes
@@ -267,7 +292,7 @@ private:
   std::map<Type *, std::string> TypeNameMap;
 
   // List of variables demoted to a function scope.
-  std::map<const Function *, std::vector<const GlobalVariable *> > localDecls;
+  std::map<const Function *, std::vector<const GlobalVariable *>> localDecls;
 
   // To record filename to ID mapping
   std::map<std::string, unsigned> filenameMap;
@@ -292,7 +317,8 @@ private:
 
   bool isLoopHeaderOfNoUnroll(const MachineBasicBlock &MBB) const;
 
-  LineReader *reader;
+  LineReader *reader = nullptr;
+
   LineReader *getReader(const std::string &);
 
   // Used to control the need to emit .generic() in the initializer of
@@ -312,20 +338,17 @@ public:
   NVPTXAsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer)
       : AsmPrinter(TM, std::move(Streamer)),
         EmitGeneric(static_cast<NVPTXTargetMachine &>(TM).getDrvInterface() ==
-                    NVPTX::CUDA) {
-    CurrentBankselLabelInBasicBlock = "";
-    reader = nullptr;
-  }
+                    NVPTX::CUDA) {}
 
-  ~NVPTXAsmPrinter() {
-    if (!reader)
-      delete reader;
+  ~NVPTXAsmPrinter() override {
+    delete reader;
   }
 
   bool runOnMachineFunction(MachineFunction &F) override {
     nvptxSubtarget = &F.getSubtarget<NVPTXSubtarget>();
     return AsmPrinter::runOnMachineFunction(F);
   }
+
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<MachineLoopInfo>();
     AsmPrinter::getAnalysisUsage(AU);
@@ -338,6 +361,7 @@ public:
   DebugLoc prevDebugLoc;
   void emitLineNumberAsDotLoc(const MachineInstr &);
 };
-} // end of namespace
 
-#endif
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_NVPTX_NVPTXASMPRINTER_H
diff --git a/lib/Target/NVPTX/NVPTXISelLowering.cpp b/lib/Target/NVPTX/NVPTXISelLowering.cpp
index 2e4764feff1..7a760fd38d0 100644
--- a/lib/Target/NVPTX/NVPTXISelLowering.cpp
+++ b/lib/Target/NVPTX/NVPTXISelLowering.cpp
@@ -1,3 +1,4 @@
+//===-- NVPTXISelLowering.cpp - NVPTX DAG Lowering Implementation ---------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -11,31 +12,55 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "NVPTXISelLowering.h"
+#include "MCTargetDesc/NVPTXBaseInfo.h"
 #include "NVPTX.h"
+#include "NVPTXISelLowering.h"
+#include "NVPTXSection.h"
+#include "NVPTXSubtarget.h"
 #include "NVPTXTargetMachine.h"
 #include "NVPTXTargetObjectFile.h"
 #include "NVPTXUtilities.h"
+#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
 #include "llvm/CodeGen/Analysis.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/CodeGen/MachineValueType.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/SelectionDAGNodes.h"
+#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/IR/Argument.h"
+#include "llvm/IR/Attributes.h"
 #include "llvm/IR/CallSite.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/GlobalValue.h"
-#include "llvm/IR/IntrinsicInst.h"
-#include "llvm/IR/Intrinsics.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/Instructions.h"
 #include "llvm/IR/Module.h"
-#include "llvm/MC/MCSectionELF.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/Value.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/CodeGen.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetCallingConv.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <iterator>
 #include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
 
 #undef DEBUG_TYPE
 #define DEBUG_TYPE "nvptx-lower"
@@ -109,7 +134,6 @@ static void ComputePTXValueVTs(const TargetLowering &TLI, const DataLayout &DL,
 NVPTXTargetLowering::NVPTXTargetLowering(const NVPTXTargetMachine &TM,
                                          const NVPTXSubtarget &STI)
     : TargetLowering(TM), nvTM(&TM), STI(STI) {
-
   // always lower memset, memcpy, and memmove intrinsics to load/store
   // instructions, rather
   // then generating calls to memset, mempcy or memmove.
@@ -981,7 +1005,7 @@ std::string NVPTXTargetLowering::getPrototype(
         unsigned align = 0;
         const CallInst *CallI = cast<CallInst>(CS->getInstruction());
         // +1 because index 0 is reserved for return type alignment
-        if (!llvm::getAlign(*CallI, i + 1, align))
+        if (!getAlign(*CallI, i + 1, align))
           align = DL.getABITypeAlignment(Ty);
         unsigned sz = DL.getTypeAllocSize(Ty);
         O << ".param .align " << align << " .b8 ";
@@ -1047,7 +1071,7 @@ unsigned NVPTXTargetLowering::getArgumentAlignment(SDValue Callee,
     // With bitcast'd call targets, the instruction will be the call
     if (isa<CallInst>(CalleeI)) {
       // Check if we have call alignment metadata
-      if (llvm::getAlign(*cast<CallInst>(CalleeI), Idx, Align))
+      if (getAlign(*cast<CallInst>(CalleeI), Idx, Align))
         return Align;
 
       const Value *CalleeV = cast<CallInst>(CalleeI)->getCalledValue();
@@ -1070,7 +1094,7 @@ unsigned NVPTXTargetLowering::getArgumentAlignment(SDValue Callee,
   // Check for function alignment information if we found that the
   // ultimate target is a Function
   if (DirectCallee)
-    if (llvm::getAlign(*cast<Function>(DirectCallee), Idx, Align))
+    if (getAlign(*cast<Function>(DirectCallee), Idx, Align))
       return Align;
 
   // Call is indirect or alignment information is not available, fall back to
@@ -1747,7 +1771,6 @@ SDValue NVPTXTargetLowering::LowerShiftRightParts(SDValue Op,
   unsigned Opc = (Op.getOpcode() == ISD::SRA_PARTS) ? ISD::SRA : ISD::SRL;
 
   if (VTBits == 32 && STI.getSmVersion() >= 35) {
-
     // For 32bit and sm35, we can use the funnel shift 'shf' instruction.
     // {dHi, dLo} = {aHi, aLo} >> Amt
     //   dHi = aHi >> Amt
@@ -1761,7 +1784,6 @@ SDValue NVPTXTargetLowering::LowerShiftRightParts(SDValue Op,
     return DAG.getMergeValues(Ops, dl);
   }
   else {
-
     // {dHi, dLo} = {aHi, aLo} >> Amt
     // - if (Amt>=size) then
     //      dLo = aHi >> (Amt-size)
@@ -1809,7 +1831,6 @@ SDValue NVPTXTargetLowering::LowerShiftLeftParts(SDValue Op,
   SDValue ShAmt  = Op.getOperand(2);
 
   if (VTBits == 32 && STI.getSmVersion() >= 35) {
-
     // For 32bit and sm35, we can use the funnel shift 'shf' instruction.
     // {dHi, dLo} = {aHi, aLo} << Amt
     //   dHi = shf.l.clamp aLo, aHi, Amt
@@ -1823,7 +1844,6 @@ SDValue NVPTXTargetLowering::LowerShiftLeftParts(SDValue Op,
     return DAG.getMergeValues(Ops, dl);
   }
   else {
-
     // {dHi, dLo} = {aHi, aLo} << Amt
     // - if (Amt>=size) then
     //      dLo = aLo << Amt (all 0)
@@ -2002,11 +2022,10 @@ NVPTXTargetLowering::LowerSTOREVector(SDValue Op, SelectionDAG &DAG) const {
     case 2:
       Opcode = NVPTXISD::StoreV2;
       break;
-    case 4: {
+    case 4:
       Opcode = NVPTXISD::StoreV4;
       break;
     }
-    }
 
     SmallVector<SDValue, 8> Ops;
 
@@ -2140,7 +2159,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
             theArgs[i],
             (theArgs[i]->getParent() ? theArgs[i]->getParent()->getParent()
                                      : nullptr))) {
-      assert(llvm::isKernelFunction(*F) &&
+      assert(isKernelFunction(*F) &&
              "Only kernels can have image/sampler params");
       InVals.push_back(DAG.getConstant(i + 1, dl, MVT::i32));
       continue;
@@ -2193,7 +2212,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
                            0);
         assert(vtparts.size() > 0 && "empty aggregate type not expected");
         bool aggregateIsPacked = false;
-        if (StructType *STy = llvm::dyn_cast<StructType>(Ty))
+        if (StructType *STy = dyn_cast<StructType>(Ty))
           aggregateIsPacked = STy->isPacked();
 
         SDValue Arg = getParamSymbol(DAG, idx, PtrVT);
@@ -2202,7 +2221,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
           EVT partVT = vtparts[parti];
           Value *srcValue = Constant::getNullValue(
               PointerType::get(partVT.getTypeForEVT(F->getContext()),
-                               llvm::ADDRESS_SPACE_PARAM));
+                               ADDRESS_SPACE_PARAM));
           SDValue srcAddr =
               DAG.getNode(ISD::ADD, dl, PtrVT, Arg,
                           DAG.getConstant(offsets[parti], dl, PtrVT));
@@ -2242,7 +2261,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
         if (NumElts == 1) {
           // We only have one element, so just directly load it
           Value *SrcValue = Constant::getNullValue(PointerType::get(
-              EltVT.getTypeForEVT(F->getContext()), llvm::ADDRESS_SPACE_PARAM));
+              EltVT.getTypeForEVT(F->getContext()), ADDRESS_SPACE_PARAM));
           SDValue P = DAG.getLoad(
               EltVT, dl, Root, Arg, MachinePointerInfo(SrcValue),
               DL.getABITypeAlignment(EltVT.getTypeForEVT(F->getContext())),
@@ -2260,7 +2279,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
           // f32,f32 = load ...
           EVT VecVT = EVT::getVectorVT(F->getContext(), EltVT, 2);
           Value *SrcValue = Constant::getNullValue(PointerType::get(
-              VecVT.getTypeForEVT(F->getContext()), llvm::ADDRESS_SPACE_PARAM));
+              VecVT.getTypeForEVT(F->getContext()), ADDRESS_SPACE_PARAM));
           SDValue P = DAG.getLoad(
               VecVT, dl, Root, Arg, MachinePointerInfo(SrcValue),
               DL.getABITypeAlignment(VecVT.getTypeForEVT(F->getContext())),
@@ -2301,7 +2320,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
           for (unsigned i = 0; i < NumElts; i += VecSize) {
             Value *SrcValue = Constant::getNullValue(
                 PointerType::get(VecVT.getTypeForEVT(F->getContext()),
-                                 llvm::ADDRESS_SPACE_PARAM));
+                                 ADDRESS_SPACE_PARAM));
             SDValue SrcAddr = DAG.getNode(ISD::ADD, dl, PtrVT, Arg,
                                           DAG.getConstant(Ofst, dl, PtrVT));
             SDValue P = DAG.getLoad(
@@ -2335,7 +2354,7 @@ SDValue NVPTXTargetLowering::LowerFormalArguments(
       // If ABI, load from the param symbol
       SDValue Arg = getParamSymbol(DAG, idx, PtrVT);
       Value *srcValue = Constant::getNullValue(PointerType::get(
-          ObjectVT.getTypeForEVT(F->getContext()), llvm::ADDRESS_SPACE_PARAM));
+          ObjectVT.getTypeForEVT(F->getContext()), ADDRESS_SPACE_PARAM));
       SDValue p;
        if (ObjectVT.getSizeInBits() < Ins[InsIdx].VT.getSizeInBits()) {
         ISD::LoadExtType ExtOp = Ins[InsIdx].Flags.isSExt() ? 
@@ -2424,7 +2443,6 @@ NVPTXTargetLowering::LowerReturn(SDValue Chain, CallingConv::ID CallConv,
       Chain = DAG.getMemIntrinsicNode(NVPTXISD::StoreRetval, dl,
                                       DAG.getVTList(MVT::Other), Ops,
                                       EltVT, MachinePointerInfo());
-
     } else if (NumElts == 2) {
       // V2 store
       SDValue StoreVal0 = OutVals[0];
@@ -2558,7 +2576,6 @@ NVPTXTargetLowering::LowerReturn(SDValue Chain, CallingConv::ID CallConv,
   return DAG.getNode(NVPTXISD::RET_FLAG, dl, MVT::Other, Chain);
 }
 
-
 void NVPTXTargetLowering::LowerAsmOperandForConstraint(
     SDValue Op, std::string &Constraint, std::vector<SDValue> &Ops,
     SelectionDAG &DAG) const {
@@ -3306,7 +3323,7 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
     Info.memVT = getValueType(DL, I.getType());
     Info.ptrVal = I.getArgOperand(0);
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = true;
     Info.align = 0;
@@ -3326,7 +3343,7 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
       Info.memVT = getValueType(DL, I.getType());
     Info.ptrVal = I.getArgOperand(0);
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = cast<ConstantInt>(I.getArgOperand(1))->getZExtValue();
@@ -3347,7 +3364,7 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
       Info.memVT = getValueType(DL, I.getType());
     Info.ptrVal = I.getArgOperand(0);
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = cast<ConstantInt>(I.getArgOperand(1))->getZExtValue();
@@ -3410,17 +3427,17 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
   case Intrinsic::nvvm_tld4_unified_r_2d_v4f32_f32:
   case Intrinsic::nvvm_tld4_unified_g_2d_v4f32_f32:
   case Intrinsic::nvvm_tld4_unified_b_2d_v4f32_f32:
-  case Intrinsic::nvvm_tld4_unified_a_2d_v4f32_f32: {
+  case Intrinsic::nvvm_tld4_unified_a_2d_v4f32_f32:
     Info.opc = getOpcForTextureInstr(Intrinsic);
     Info.memVT = MVT::v4f32;
     Info.ptrVal = nullptr;
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = 16;
     return true;
-  }
+
   case Intrinsic::nvvm_tex_1d_v4s32_s32:
   case Intrinsic::nvvm_tex_1d_v4s32_f32:
   case Intrinsic::nvvm_tex_1d_level_v4s32_f32:
@@ -3532,17 +3549,17 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
   case Intrinsic::nvvm_tld4_unified_r_2d_v4u32_f32:
   case Intrinsic::nvvm_tld4_unified_g_2d_v4u32_f32:
   case Intrinsic::nvvm_tld4_unified_b_2d_v4u32_f32:
-  case Intrinsic::nvvm_tld4_unified_a_2d_v4u32_f32: {
+  case Intrinsic::nvvm_tld4_unified_a_2d_v4u32_f32:
     Info.opc = getOpcForTextureInstr(Intrinsic);
     Info.memVT = MVT::v4i32;
     Info.ptrVal = nullptr;
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = 16;
     return true;
-  }
+
   case Intrinsic::nvvm_suld_1d_i8_clamp:
   case Intrinsic::nvvm_suld_1d_v2i8_clamp:
   case Intrinsic::nvvm_suld_1d_v4i8_clamp:
@@ -3587,17 +3604,17 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
   case Intrinsic::nvvm_suld_2d_array_v4i8_zero:
   case Intrinsic::nvvm_suld_3d_i8_zero:
   case Intrinsic::nvvm_suld_3d_v2i8_zero:
-  case Intrinsic::nvvm_suld_3d_v4i8_zero: {
+  case Intrinsic::nvvm_suld_3d_v4i8_zero:
     Info.opc = getOpcForSurfaceInstr(Intrinsic);
     Info.memVT = MVT::i8;
     Info.ptrVal = nullptr;
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = 16;
     return true;
-  }
+
   case Intrinsic::nvvm_suld_1d_i16_clamp:
   case Intrinsic::nvvm_suld_1d_v2i16_clamp:
   case Intrinsic::nvvm_suld_1d_v4i16_clamp:
@@ -3642,17 +3659,17 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
   case Intrinsic::nvvm_suld_2d_array_v4i16_zero:
   case Intrinsic::nvvm_suld_3d_i16_zero:
   case Intrinsic::nvvm_suld_3d_v2i16_zero:
-  case Intrinsic::nvvm_suld_3d_v4i16_zero: {
+  case Intrinsic::nvvm_suld_3d_v4i16_zero:
     Info.opc = getOpcForSurfaceInstr(Intrinsic);
     Info.memVT = MVT::i16;
     Info.ptrVal = nullptr;
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = 16;
     return true;
-  }
+
   case Intrinsic::nvvm_suld_1d_i32_clamp:
   case Intrinsic::nvvm_suld_1d_v2i32_clamp:
   case Intrinsic::nvvm_suld_1d_v4i32_clamp:
@@ -3697,17 +3714,17 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
   case Intrinsic::nvvm_suld_2d_array_v4i32_zero:
   case Intrinsic::nvvm_suld_3d_i32_zero:
   case Intrinsic::nvvm_suld_3d_v2i32_zero:
-  case Intrinsic::nvvm_suld_3d_v4i32_zero: {
+  case Intrinsic::nvvm_suld_3d_v4i32_zero:
     Info.opc = getOpcForSurfaceInstr(Intrinsic);
     Info.memVT = MVT::i32;
     Info.ptrVal = nullptr;
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = 16;
     return true;
-  }
+
   case Intrinsic::nvvm_suld_1d_i64_clamp:
   case Intrinsic::nvvm_suld_1d_v2i64_clamp:
   case Intrinsic::nvvm_suld_1d_array_i64_clamp:
@@ -3737,18 +3754,17 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
   case Intrinsic::nvvm_suld_2d_array_i64_zero:
   case Intrinsic::nvvm_suld_2d_array_v2i64_zero:
   case Intrinsic::nvvm_suld_3d_i64_zero:
-  case Intrinsic::nvvm_suld_3d_v2i64_zero: {
+  case Intrinsic::nvvm_suld_3d_v2i64_zero:
     Info.opc = getOpcForSurfaceInstr(Intrinsic);
     Info.memVT = MVT::i64;
     Info.ptrVal = nullptr;
     Info.offset = 0;
-    Info.vol = 0;
+    Info.vol = false;
     Info.readMem = true;
     Info.writeMem = false;
     Info.align = 16;
     return true;
   }
-  }
   return false;
 }
 
@@ -3760,7 +3776,6 @@ bool NVPTXTargetLowering::getTgtMemIntrinsic(
 bool NVPTXTargetLowering::isLegalAddressingMode(const DataLayout &DL,
                                                 const AddrMode &AM, Type *Ty,
                                                 unsigned AS) const {
-
   // AddrMode - This represents an addressing mode of:
   //    BaseGV + BaseOffs + BaseReg + Scale*ScaleReg
   //
@@ -4059,7 +4074,7 @@ static SDValue PerformANDCombine(SDNode *N,
     }
 
     bool AddTo = false;
-    if (AExt.getNode() != 0) {
+    if (AExt.getNode() != nullptr) {
       // Re-insert the ext as a zext.
       Val = DCI.DAG.getNode(ISD::ZERO_EXTEND, SDLoc(N),
                             AExt.getValueType(), Val);
@@ -4204,7 +4219,6 @@ static bool IsMulWideOperandDemotable(SDValue Op,
 static bool AreMulWideOperandsDemotable(SDValue LHS, SDValue RHS,
                                         unsigned OptSize,
                                         bool &IsSigned) {
-
   OperandSignedness LHSSign;
 
   // The LHS operand must be a demotable op
diff --git a/lib/Target/NVPTX/NVPTXInstrInfo.td b/lib/Target/NVPTX/NVPTXInstrInfo.td
index 92a88c7f250..0fbb0448e4c 100644
--- a/lib/Target/NVPTX/NVPTXInstrInfo.td
+++ b/lib/Target/NVPTX/NVPTXInstrInfo.td
@@ -144,7 +144,7 @@ def do_SQRTF32_RN : Predicate<"usePrecSqrtF32()">;
 def hasHWROT32 : Predicate<"Subtarget->hasHWROT32()">;
 def noHWROT32 : Predicate<"!Subtarget->hasHWROT32()">;
 
-def true : Predicate<"1">;
+def true : Predicate<"true">;
 
 def hasPTX31 : Predicate<"Subtarget->getPTXVersion() >= 31">;
 
diff --git a/lib/Target/NVPTX/NVPTXSection.h b/lib/Target/NVPTX/NVPTXSection.h
index cad4f5668fd..b0472de980f 100644
--- a/lib/Target/NVPTX/NVPTXSection.h
+++ b/lib/Target/NVPTX/NVPTXSection.h
@@ -1,4 +1,4 @@
-//===- NVPTXSection.h - NVPTX-specific section representation -*- C++ -*-===//
+//===- NVPTXSection.h - NVPTX-specific section representation ---*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -14,18 +14,20 @@
 #ifndef LLVM_LIB_TARGET_NVPTX_NVPTXSECTION_H
 #define LLVM_LIB_TARGET_NVPTX_NVPTXSECTION_H
 
-#include "llvm/IR/GlobalVariable.h"
 #include "llvm/MC/MCSection.h"
+#include "llvm/MC/SectionKind.h"
 
 namespace llvm {
+
 /// Represents a section in PTX PTX does not have sections. We create this class
 /// in order to use the ASMPrint interface.
 ///
 class NVPTXSection final : public MCSection {
   virtual void anchor();
+
 public:
   NVPTXSection(SectionVariant V, SectionKind K) : MCSection(V, K, nullptr) {}
-  ~NVPTXSection() {}
+  ~NVPTXSection() = default;
 
   /// Override this as NVPTX has its own way of printing switching
   /// to a section.
@@ -40,4 +42,4 @@ public:
 
 } // end namespace llvm
 
-#endif
+#endif // LLVM_LIB_TARGET_NVPTX_NVPTXSECTION_H
diff --git a/lib/Target/NVPTX/NVPTXTargetMachine.cpp b/lib/Target/NVPTX/NVPTXTargetMachine.cpp
index 6c68a2c9370..eb357e0a4d5 100644
--- a/lib/Target/NVPTX/NVPTXTargetMachine.cpp
+++ b/lib/Target/NVPTX/NVPTXTargetMachine.cpp
@@ -11,41 +11,28 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "NVPTXTargetMachine.h"
-#include "MCTargetDesc/NVPTXMCAsmInfo.h"
 #include "NVPTX.h"
 #include "NVPTXAllocaHoisting.h"
 #include "NVPTXLowerAggrCopies.h"
+#include "NVPTXTargetMachine.h"
 #include "NVPTXTargetObjectFile.h"
 #include "NVPTXTargetTransformInfo.h"
-#include "llvm/Analysis/Passes.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/TargetPassConfig.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/IRPrintingPasses.h"
 #include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/Verifier.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCInstrInfo.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/FormattedStream.h"
 #include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetLowering.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
-#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/GVN.h"
 #include "llvm/Transforms/Vectorize.h"
+#include <cassert>
+#include <string>
 
 using namespace llvm;
 
@@ -57,6 +44,7 @@ static cl::opt<bool>
                                cl::init(false), cl::Hidden);
 
 namespace llvm {
+
 void initializeNVVMIntrRangePass(PassRegistry&);
 void initializeNVVMReflectPass(PassRegistry&);
 void initializeGenericToNVVMPass(PassRegistry&);
@@ -66,7 +54,8 @@ void initializeNVPTXInferAddressSpacesPass(PassRegistry &);
 void initializeNVPTXLowerAggrCopiesPass(PassRegistry &);
 void initializeNVPTXLowerArgsPass(PassRegistry &);
 void initializeNVPTXLowerAllocaPass(PassRegistry &);
-}
+
+} // end namespace llvm
 
 extern "C" void LLVMInitializeNVPTXTarget() {
   // Register the target.
@@ -109,7 +98,7 @@ NVPTXTargetMachine::NVPTXTargetMachine(const Target &T, const Triple &TT,
     : LLVMTargetMachine(T, computeDataLayout(is64bit), TT, CPU, FS, Options,
                         Reloc::PIC_, CM, OL),
       is64bit(is64bit),
-      TLOF(make_unique<NVPTXTargetObjectFile>()),
+      TLOF(llvm::make_unique<NVPTXTargetObjectFile>()),
       Subtarget(TT, CPU, FS, *this) {
   if (TT.getOS() == Triple::NVCL)
     drvInterface = NVPTX::NVCL;
@@ -118,7 +107,7 @@ NVPTXTargetMachine::NVPTXTargetMachine(const Target &T, const Triple &TT,
   initAsmInfo();
 }
 
-NVPTXTargetMachine::~NVPTXTargetMachine() {}
+NVPTXTargetMachine::~NVPTXTargetMachine() = default;
 
 void NVPTXTargetMachine32::anchor() {}
 
@@ -141,6 +130,7 @@ NVPTXTargetMachine64::NVPTXTargetMachine64(const Target &T, const Triple &TT,
     : NVPTXTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, true) {}
 
 namespace {
+
 class NVPTXPassConfig : public TargetPassConfig {
 public:
   NVPTXPassConfig(NVPTXTargetMachine *TM, PassManagerBase &PM)
@@ -170,6 +160,7 @@ private:
   // Add passes that perform straight-line scalar optimizations.
   void addStraightLineScalarOptimizationPasses();
 };
+
 } // end anonymous namespace
 
 TargetPassConfig *NVPTXTargetMachine::createPassConfig(PassManagerBase &PM) {
diff --git a/lib/Target/NVPTX/NVPTXTargetObjectFile.h b/lib/Target/NVPTX/NVPTXTargetObjectFile.h
index dc367a90594..69c59d0296a 100644
--- a/lib/Target/NVPTX/NVPTXTargetObjectFile.h
+++ b/lib/Target/NVPTX/NVPTXTargetObjectFile.h
@@ -11,14 +11,13 @@
 #define LLVM_LIB_TARGET_NVPTX_NVPTXTARGETOBJECTFILE_H
 
 #include "NVPTXSection.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/SectionKind.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
 
 namespace llvm {
-class GlobalVariable;
-class Module;
 
 class NVPTXTargetObjectFile : public TargetLoweringObjectFile {
-
 public:
   NVPTXTargetObjectFile() {
     TextSection = nullptr;
@@ -43,7 +42,7 @@ public:
     DwarfMacinfoSection = nullptr;
   }
 
-  virtual ~NVPTXTargetObjectFile();
+  ~NVPTXTargetObjectFile() override;
 
   void Initialize(MCContext &ctx, const TargetMachine &TM) override {
     TargetLoweringObjectFile::Initialize(ctx, TM);
@@ -52,7 +51,6 @@ public:
     BSSSection = new NVPTXSection(MCSection::SV_ELF, SectionKind::getBSS());
     ReadOnlySection =
         new NVPTXSection(MCSection::SV_ELF, SectionKind::getReadOnly());
-
     StaticCtorSection =
         new NVPTXSection(MCSection::SV_ELF, SectionKind::getMetadata());
     StaticDtorSection =
@@ -102,4 +100,4 @@ public:
 
 } // end namespace llvm
 
-#endif
+#endif // LLVM_LIB_TARGET_NVPTX_NVPTXTARGETOBJECTFILE_H