Index: include/clang/AST/RecursiveASTVisitor.h
===================================================================
--- include/clang/AST/RecursiveASTVisitor.h
+++ include/clang/AST/RecursiveASTVisitor.h
@@ -11,13 +11,14 @@
 //  traverses the entire AST.
 //
 //===----------------------------------------------------------------------===//
+
 #ifndef LLVM_CLANG_AST_RECURSIVEASTVISITOR_H
 #define LLVM_CLANG_AST_RECURSIVEASTVISITOR_H
 
-#include <type_traits>
-
 #include "clang/AST/Attr.h"
 #include "clang/AST/Decl.h"
+#include "clang/AST/DeclarationName.h"
+#include "clang/AST/DeclBase.h"
 #include "clang/AST/DeclCXX.h"
 #include "clang/AST/DeclFriend.h"
 #include "clang/AST/DeclObjC.h"
@@ -27,7 +28,9 @@
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/ExprObjC.h"
 #include "clang/AST/ExprOpenMP.h"
+#include "clang/AST/LambdaCapture.h"
 #include "clang/AST/NestedNameSpecifier.h"
+#include "clang/AST/OpenMPClause.h"
 #include "clang/AST/Stmt.h"
 #include "clang/AST/StmtCXX.h"
 #include "clang/AST/StmtObjC.h"
@@ -36,6 +39,14 @@
 #include "clang/AST/TemplateName.h"
 #include "clang/AST/Type.h"
 #include "clang/AST/TypeLoc.h"
+#include "clang/Basic/OpenMPKinds.h"
+#include "clang/Basic/Specifiers.h"
+#include "llvm/ADT/PointerIntPair.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/Casting.h"
+#include <algorithm>
+#include <cstddef>
+#include <type_traits>
 
 // The following three macros are used for meta programming.  The code
 // using them is responsible for defining macro OPERATOR().
@@ -70,7 +81,7 @@
   do {                                                                         \
     if (!getDerived().CALL_EXPR)                                               \
       return false;                                                            \
-  } while (0)
+  } while (false)
 
 /// \brief A class that does preorder depth-first traversal on the
 /// entire Clang AST and visits each node.
@@ -320,7 +331,7 @@
   do {                                                                         \
     if (!TRAVERSE_STMT_BASE(Stmt, Stmt, S, Queue))                             \
       return false;                                                            \
-  } while (0)
+  } while (false)
 
 public:
 // Declare Traverse*() for all concrete Stmt classes.
@@ -2000,6 +2011,7 @@
 DEF_TRAVERSE_STMT(ObjCAtTryStmt, {})
 DEF_TRAVERSE_STMT(ObjCForCollectionStmt, {})
 DEF_TRAVERSE_STMT(ObjCAutoreleasePoolStmt, {})
+
 DEF_TRAVERSE_STMT(CXXForRangeStmt, {
   if (!getDerived().shouldVisitImplicitCode()) {
     TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getLoopVarStmt());
@@ -2009,10 +2021,12 @@
     return true;
   }
 })
+
 DEF_TRAVERSE_STMT(MSDependentExistsStmt, {
   TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc()));
   TRY_TO(TraverseDeclarationNameInfo(S->getNameInfo()));
 })
+
 DEF_TRAVERSE_STMT(ReturnStmt, {})
 DEF_TRAVERSE_STMT(SwitchStmt, {})
 DEF_TRAVERSE_STMT(WhileStmt, {})
@@ -2254,14 +2268,18 @@
 DEF_TRAVERSE_STMT(AddrLabelExpr, {})
 DEF_TRAVERSE_STMT(ArraySubscriptExpr, {})
 DEF_TRAVERSE_STMT(OMPArraySectionExpr, {})
+
 DEF_TRAVERSE_STMT(BlockExpr, {
   TRY_TO(TraverseDecl(S->getBlockDecl()));
   return true; // no child statements to loop through.
 })
+
 DEF_TRAVERSE_STMT(ChooseExpr, {})
+
 DEF_TRAVERSE_STMT(CompoundLiteralExpr, {
   TRY_TO(TraverseTypeLoc(S->getTypeSourceInfo()->getTypeLoc()));
 })
+
 DEF_TRAVERSE_STMT(CXXBindTemporaryExpr, {})
 DEF_TRAVERSE_STMT(CXXBoolLiteralExpr, {})
 DEF_TRAVERSE_STMT(CXXDefaultArgExpr, {})
@@ -2270,6 +2288,7 @@
 DEF_TRAVERSE_STMT(ExprWithCleanups, {})
 DEF_TRAVERSE_STMT(CXXNullPtrLiteralExpr, {})
 DEF_TRAVERSE_STMT(CXXStdInitializerListExpr, {})
+
 DEF_TRAVERSE_STMT(CXXPseudoDestructorExpr, {
   TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc()));
   if (TypeSourceInfo *ScopeInfo = S->getScopeTypeInfo())
@@ -2277,6 +2296,7 @@
   if (TypeSourceInfo *DestroyedTypeInfo = S->getDestroyedTypeInfo())
     TRY_TO(TraverseTypeLoc(DestroyedTypeInfo->getTypeLoc()));
 })
+
 DEF_TRAVERSE_STMT(CXXThisExpr, {})
 DEF_TRAVERSE_STMT(CXXThrowExpr, {})
 DEF_TRAVERSE_STMT(UserDefinedLiteral, {})
@@ -2287,30 +2307,37 @@
 DEF_TRAVERSE_STMT(ImplicitValueInitExpr, {})
 DEF_TRAVERSE_STMT(NoInitExpr, {})
 DEF_TRAVERSE_STMT(ObjCBoolLiteralExpr, {})
+
 DEF_TRAVERSE_STMT(ObjCEncodeExpr, {
   if (TypeSourceInfo *TInfo = S->getEncodedTypeSourceInfo())
     TRY_TO(TraverseTypeLoc(TInfo->getTypeLoc()));
 })
+
 DEF_TRAVERSE_STMT(ObjCIsaExpr, {})
 DEF_TRAVERSE_STMT(ObjCIvarRefExpr, {})
+
 DEF_TRAVERSE_STMT(ObjCMessageExpr, {
   if (TypeSourceInfo *TInfo = S->getClassReceiverTypeInfo())
     TRY_TO(TraverseTypeLoc(TInfo->getTypeLoc()));
 })
+
 DEF_TRAVERSE_STMT(ObjCPropertyRefExpr, {})
 DEF_TRAVERSE_STMT(ObjCSubscriptRefExpr, {})
 DEF_TRAVERSE_STMT(ObjCProtocolExpr, {})
 DEF_TRAVERSE_STMT(ObjCSelectorExpr, {})
 DEF_TRAVERSE_STMT(ObjCIndirectCopyRestoreExpr, {})
+
 DEF_TRAVERSE_STMT(ObjCBridgedCastExpr, {
   TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc()));
 })
+
 DEF_TRAVERSE_STMT(ParenExpr, {})
 DEF_TRAVERSE_STMT(ParenListExpr, {})
 DEF_TRAVERSE_STMT(PredefinedExpr, {})
 DEF_TRAVERSE_STMT(ShuffleVectorExpr, {})
 DEF_TRAVERSE_STMT(ConvertVectorExpr, {})
 DEF_TRAVERSE_STMT(StmtExpr, {})
+
 DEF_TRAVERSE_STMT(UnresolvedLookupExpr, {
   TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc()));
   if (S->hasExplicitTemplateArgs()) {
@@ -2364,12 +2391,14 @@
     return true;
   }
 })
+
 DEF_TRAVERSE_STMT(CoreturnStmt, {
   if (!getDerived().shouldVisitImplicitCode()) {
     TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOperand());
     return true;
   }
 })
+
 DEF_TRAVERSE_STMT(CoawaitExpr, {
   if (!getDerived().shouldVisitImplicitCode()) {
     TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOperand());
Index: include/clang/Basic/IdentifierTable.h
===================================================================
--- include/clang/Basic/IdentifierTable.h
+++ include/clang/Basic/IdentifierTable.h
@@ -18,14 +18,21 @@
 
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/TokenKinds.h"
+#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Allocator.h"
 #include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
 #include <string>
+#include <new>
+#include <utility>
 
 namespace llvm {
   template <typename T> struct DenseMapInfo;
-}
+} // end namespace llvm
 
 namespace clang {
   class LangOptions;
@@ -38,7 +45,6 @@
   /// \brief A simple pair of identifier info and location.
   typedef std::pair<IdentifierInfo*, SourceLocation> IdentifierLocPair;
 
-
 /// One of these records is kept for each identifier that
 /// is lexed.  This contains information about whether the token was \#define'd,
 /// is a language keyword, or if it is a front-end token of some sort (e.g. a
@@ -85,13 +91,13 @@
 public:
   IdentifierInfo();
 
-
   /// \brief Return true if this is the identifier for the specified string.
   ///
   /// This is intended to be used for string literals only: II->isStr("foo").
   template <std::size_t StrLen>
   bool isStr(const char (&Str)[StrLen]) const {
-    return getLength() == StrLen-1 && !memcmp(getNameStart(), Str, StrLen-1);
+    return getLength() == StrLen-1 &&
+           memcmp(getNameStart(), Str, StrLen-1) == 0;
   }
 
   /// \brief Return the beginning of the actual null-terminated string for this
@@ -137,7 +143,7 @@
 
     HasMacro = Val;
     if (Val) {
-      NeedsHandleIdentifier = 1;
+      NeedsHandleIdentifier = true;
       HadMacro = true;
     } else {
       RecomputeNeedsHandleIdentifier();
@@ -229,7 +235,7 @@
   void setIsExtensionToken(bool Val) {
     IsExtension = Val;
     if (Val)
-      NeedsHandleIdentifier = 1;
+      NeedsHandleIdentifier = true;
     else
       RecomputeNeedsHandleIdentifier();
   }
@@ -243,7 +249,7 @@
   void setIsFutureCompatKeyword(bool Val) {
     IsFutureCompatKeyword = Val;
     if (Val)
-      NeedsHandleIdentifier = 1;
+      NeedsHandleIdentifier = true;
     else
       RecomputeNeedsHandleIdentifier();
   }
@@ -253,7 +259,7 @@
   void setIsPoisoned(bool Value = true) {
     IsPoisoned = Value;
     if (Value)
-      NeedsHandleIdentifier = 1;
+      NeedsHandleIdentifier = true;
     else
       RecomputeNeedsHandleIdentifier();
   }
@@ -266,7 +272,7 @@
   void setIsCPlusPlusOperatorKeyword(bool Val = true) {
     IsCPPOperatorKeyword = Val;
     if (Val)
-      NeedsHandleIdentifier = 1;
+      NeedsHandleIdentifier = true;
     else
       RecomputeNeedsHandleIdentifier();
   }
@@ -371,6 +377,7 @@
 class PoisonIdentifierRAIIObject {
   IdentifierInfo *const II;
   const bool OldValue;
+
 public:
   PoisonIdentifierRAIIObject(IdentifierInfo *II, bool NewValue)
     : II(II), OldValue(II ? II->isPoisoned() : false) {
@@ -823,7 +830,7 @@
   unsigned ExtraKindOrNumArgs;
 };
 
-}  // end namespace clang
+} // end namespace clang
 
 namespace llvm {
 /// Define DenseMapInfo so that Selectors can be used as keys in DenseMap and
@@ -833,6 +840,7 @@
   static inline clang::Selector getEmptyKey() {
     return clang::Selector::getEmptyMarker();
   }
+
   static inline clang::Selector getTombstoneKey() {
     return clang::Selector::getTombstoneMarker();
   }
@@ -855,9 +863,11 @@
   static inline const void *getAsVoidPointer(clang::Selector P) {
     return P.getAsOpaquePtr();
   }
+
   static inline clang::Selector getFromVoidPointer(const void *P) {
     return clang::Selector(reinterpret_cast<uintptr_t>(P));
   }
+
   enum { NumLowBitsAvailable = 0 };  
 };
 
@@ -869,9 +879,11 @@
   static inline void *getAsVoidPointer(clang::IdentifierInfo* P) {
     return P;
   }
+
   static inline clang::IdentifierInfo *getFromVoidPointer(void *P) {
     return static_cast<clang::IdentifierInfo*>(P);
   }
+
   enum { NumLowBitsAvailable = 1 };
 };
 
@@ -881,11 +893,14 @@
   static inline const void *getAsVoidPointer(const clang::IdentifierInfo* P) {
     return P;
   }
+
   static inline const clang::IdentifierInfo *getFromVoidPointer(const void *P) {
     return static_cast<const clang::IdentifierInfo*>(P);
   }
+
   enum { NumLowBitsAvailable = 1 };
 };
 
-}  // end namespace llvm
-#endif
+} // end namespace llvm
+
+#endif // LLVM_CLANG_BASIC_IDENTIFIERTABLE_H
Index: lib/Basic/FileManager.cpp
===================================================================
--- lib/Basic/FileManager.cpp
+++ lib/Basic/FileManager.cpp
@@ -20,16 +20,19 @@
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/FileSystemStatCache.h"
 #include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringRef.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/raw_ostream.h"
+#include <climits>
+#include <cstdint>
+#include <cstdlib>
 #include <map>
-#include <set>
 #include <string>
-#include <system_error>
+#include <utility>
 
 using namespace clang;
 
@@ -494,7 +497,6 @@
   UniqueRealFiles.erase(Entry->getUniqueID());
 }
 
-
 void FileManager::GetUniqueIDMapping(
                    SmallVectorImpl<const FileEntry *> &UIDToFiles) const {
   UIDToFiles.clear();