diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index bb27ab9..fbf26cc 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -3201,7 +3201,7 @@
   CharUnits sz = getTypeSizeInChars(type);
 
   // Make all integer and enum types at least as large as an int
-  if (sz.isPositive() && type->isIntegralType())
+  if (sz.isPositive() && type->isIntegralOrEnumerationType())
     sz = std::max(sz, getTypeSizeInChars(IntTy));
   // Treat arrays as pointers, since that's how they're passed in.
   else if (type->isArrayType())
diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index 68fcb35..db2473b 100644
--- a/lib/AST/Expr.cpp
+++ b/lib/AST/Expr.cpp
@@ -37,7 +37,7 @@
   // If this value has _Bool type, it is obvious 0/1.
   if (getType()->isBooleanType()) return true;
   // If this is a non-scalar-integer type, we don't care enough to try. 
-  if (!getType()->isIntegralType()) return false;
+  if (!getType()->isIntegralOrEnumerationType()) return false;
   
   if (const ParenExpr *PE = dyn_cast<ParenExpr>(this))
     return PE->getSubExpr()->isKnownToHaveBooleanValue();
@@ -160,7 +160,7 @@
   //  (VD) - a constant with integral or enumeration type and is
   //         initialized with an expression that is value-dependent.
   else if (VarDecl *Var = dyn_cast<VarDecl>(D)) {
-    if (Var->getType()->isIntegralType() &&
+    if (Var->getType()->isIntegralOrEnumerationType() &&
         Var->getType().getCVRQualifiers() == Qualifiers::Const) {
       if (const Expr *Init = Var->getAnyInitializer())
         if (Init->isValueDependent())
@@ -1598,7 +1598,7 @@
 
     if (CastExpr *P = dyn_cast<CastExpr>(E)) {
       // We ignore integer <-> casts that are of the same width, ptr<->ptr and
-      // ptr<->int casts of the same width.  We also ignore all identify casts.
+      // ptr<->int casts of the same width.  We also ignore all identity casts.
       Expr *SE = P->getSubExpr();
 
       if (Ctx.hasSameUnqualifiedType(E->getType(), SE->getType())) {
@@ -1797,7 +1797,8 @@
       // If the unthinkable happens, fall through to the safest alternative.
         
     case NPC_ValueDependentIsNull:
-      return isTypeDependent() || getType()->isIntegralType();
+      return isTypeDependent() || 
+             (getType()->isIntegralType() && !getType()->isEnumeralType());
         
     case NPC_ValueDependentIsNotNull:
       return false;
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index d97d625..bec3792 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -157,7 +157,7 @@
 
 static bool HandleConversionToBool(const Expr* E, bool& Result,
                                    EvalInfo &Info) {
-  if (E->getType()->isIntegralType()) {
+  if (E->getType()->isIntegralOrEnumerationType()) {
     APSInt IntResult;
     if (!EvaluateInteger(E, IntResult, Info))
       return false;
@@ -542,7 +542,7 @@
         SubExpr->getType()->isBlockPointerType())
       return Visit(SubExpr);
 
-    if (SubExpr->getType()->isIntegralType()) {
+    if (SubExpr->getType()->isIntegralOrEnumerationType()) {
       APValue Value;
       if (!EvaluateIntegerOrLValue(SubExpr, Value, Info))
         break;
@@ -839,7 +839,8 @@
     : Info(info), Result(result) {}
 
   bool Success(const llvm::APSInt &SI, const Expr *E) {
-    assert(E->getType()->isIntegralType() && "Invalid evaluation result.");
+    assert(E->getType()->isIntegralOrEnumerationType() && 
+           "Invalid evaluation result.");
     assert(SI.isSigned() == E->getType()->isSignedIntegerType() &&
            "Invalid evaluation result.");
     assert(SI.getBitWidth() == Info.Ctx.getIntWidth(E->getType()) &&
@@ -849,7 +850,8 @@
   }
 
   bool Success(const llvm::APInt &I, const Expr *E) {
-    assert(E->getType()->isIntegralType() && "Invalid evaluation result.");
+    assert(E->getType()->isIntegralOrEnumerationType() && 
+           "Invalid evaluation result.");
     assert(I.getBitWidth() == Info.Ctx.getIntWidth(E->getType()) &&
            "Invalid evaluation result.");
     Result = APValue(APSInt(I));
@@ -858,7 +860,8 @@
   }
 
   bool Success(uint64_t Value, const Expr *E) {
-    assert(E->getType()->isIntegralType() && "Invalid evaluation result.");
+    assert(E->getType()->isIntegralOrEnumerationType() && 
+           "Invalid evaluation result.");
     Result = APValue(Info.Ctx.MakeIntValue(Value, E->getType()));
     return true;
   }
@@ -964,12 +967,12 @@
 } // end anonymous namespace
 
 static bool EvaluateIntegerOrLValue(const Expr* E, APValue &Result, EvalInfo &Info) {
-  assert(E->getType()->isIntegralType());
+  assert(E->getType()->isIntegralOrEnumerationType());
   return IntExprEvaluator(Info, Result).Visit(const_cast<Expr*>(E));
 }
 
 static bool EvaluateInteger(const Expr* E, APSInt &Result, EvalInfo &Info) {
-  assert(E->getType()->isIntegralType());
+  assert(E->getType()->isIntegralOrEnumerationType());
 
   APValue Val;
   if (!EvaluateIntegerOrLValue(E, Val, Info) || !Val.isInt())
@@ -1335,8 +1338,8 @@
       return Success(Result, E);
     }
   }
-  if (!LHSTy->isIntegralType() ||
-      !RHSTy->isIntegralType()) {
+  if (!LHSTy->isIntegralOrEnumerationType() ||
+      !RHSTy->isIntegralOrEnumerationType()) {
     // We can't continue from here for non-integral types, and they
     // could potentially confuse the following operations.
     return false;
@@ -1591,7 +1594,7 @@
   }
 
   // Only handle integral operations...
-  if (!E->getSubExpr()->getType()->isIntegralType())
+  if (!E->getSubExpr()->getType()->isIntegralOrEnumerationType())
     return false;
 
   // Get the operand value into 'Result'.
@@ -1634,7 +1637,7 @@
   }
 
   // Handle simple integer->integer casts.
-  if (SrcType->isIntegralType()) {
+  if (SrcType->isIntegralOrEnumerationType()) {
     if (!Visit(SubExpr))
       return false;
 
@@ -1929,7 +1932,7 @@
 bool FloatExprEvaluator::VisitCastExpr(CastExpr *E) {
   Expr* SubExpr = E->getSubExpr();
 
-  if (SubExpr->getType()->isIntegralType()) {
+  if (SubExpr->getType()->isIntegralOrEnumerationType()) {
     APSInt IntResult;
     if (!EvaluateInteger(SubExpr, IntResult, Info))
       return false;
@@ -2337,7 +2340,7 @@
 
 static ICEDiag CheckICE(const Expr* E, ASTContext &Ctx) {
   assert(!E->isValueDependent() && "Should not see value dependent exprs!");
-  if (!E->getType()->isIntegralType()) {
+  if (!E->getType()->isIntegralOrEnumerationType()) {
     return ICEDiag(2, E->getLocStart());
   }
 
@@ -2600,7 +2603,7 @@
   case Expr::CXXReinterpretCastExprClass:
   case Expr::CXXConstCastExprClass: {
     const Expr *SubExpr = cast<CastExpr>(E)->getSubExpr();
-    if (SubExpr->getType()->isIntegralType())
+    if (SubExpr->getType()->isIntegralOrEnumerationType())
       return CheckICE(SubExpr, Ctx);
     if (isa<FloatingLiteral>(SubExpr->IgnoreParens()))
       return NoDiag();
diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index 1d91e76..92fffd1 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -450,6 +450,17 @@
   return false;
 }
 
+bool Type::isIntegralOrEnumerationType() const {
+  if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType))
+    return BT->getKind() >= BuiltinType::Bool &&
+           BT->getKind() <= BuiltinType::Int128;
+  
+  if (isa<EnumType>(CanonicalType))
+    return true;
+  
+  return false;  
+}
+
 bool Type::isEnumeralType() const {
   if (const TagType *TT = dyn_cast<TagType>(CanonicalType))
     return TT->getDecl()->isEnum();
diff --git a/lib/Checker/CFRefCount.cpp b/lib/Checker/CFRefCount.cpp
index 42e6f67..c2c4733 100644
--- a/lib/Checker/CFRefCount.cpp
+++ b/lib/Checker/CFRefCount.cpp
@@ -2659,7 +2659,7 @@
           // approriately delegated to the respective StoreManagers while
           // still allowing us to do checker-specific logic (e.g.,
           // invalidating reference counts), probably via callbacks.
-          if (ER->getElementType()->isIntegralType()) {
+          if (ER->getElementType()->isIntegralOrEnumerationType()) {
             const MemRegion *superReg = ER->getSuperRegion();
             if (isa<VarRegion>(superReg) || isa<FieldRegion>(superReg) ||
                 isa<ObjCIvarRegion>(superReg))
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp
index ad024bd..a4f192b 100644
--- a/lib/CodeGen/TargetInfo.cpp
+++ b/lib/CodeGen/TargetInfo.cpp
@@ -894,7 +894,7 @@
     QualType ET = Context.getCanonicalType(CT->getElementType());
 
     uint64_t Size = Context.getTypeSize(Ty);
-    if (ET->isIntegralType()) {
+    if (ET->isIntegralOrEnumerationType()) {
       if (Size <= 64)
         Current = Integer;
       else if (Size <= 128)
diff --git a/lib/Sema/SemaCXXCast.cpp b/lib/Sema/SemaCXXCast.cpp
index 16f0af1..9827086 100644
--- a/lib/Sema/SemaCXXCast.cpp
+++ b/lib/Sema/SemaCXXCast.cpp
@@ -1163,7 +1163,7 @@
     return TC_Success;
   }
 
-  if (SrcType->isIntegralType() || SrcType->isEnumeralType()) {
+  if (SrcType->isIntegralOrEnumerationType()) {
     assert(destIsPtr && "One type must be a pointer");
     // C++ 5.2.10p5: A value of integral or enumeration type can be explicitly
     //   converted to a pointer.
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index e3d20bd..39fbc6a 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -3949,7 +3949,7 @@
     QualType T = VDecl->getType();
     if (!T->isDependentType() &&
         (!Context.getCanonicalType(T).isConstQualified() ||
-         !T->isIntegralType())) {
+         !T->isIntegralOrEnumerationType())) {
       Diag(VDecl->getLocation(), diag::err_member_initialization)
         << VDecl->getDeclName() << Init->getSourceRange();
       VDecl->setInvalidDecl();
@@ -3960,7 +3960,7 @@
       //   can specify a constant-initializer which shall be an
       //   integral constant expression (5.19).
       if (!Init->isTypeDependent() &&
-          !Init->getType()->isIntegralType()) {
+          !Init->getType()->isIntegralOrEnumerationType()) {
         // We have a non-dependent, non-integral or enumeration type.
         Diag(Init->getSourceRange().getBegin(),
              diag::err_in_class_initializer_non_integral_type)
@@ -5573,7 +5573,7 @@
 
   // C99 6.7.2.1p4 - verify the field type.
   // C++ 9.6p3: A bit-field shall have integral or enumeration type.
-  if (!FieldTy->isDependentType() && !FieldTy->isIntegralType()) {
+  if (!FieldTy->isDependentType() && !FieldTy->isIntegralOrEnumerationType()) {
     // Handle incomplete types with specific error.
     if (RequireCompleteType(FieldLoc, FieldTy, diag::err_field_incomplete))
       return true;
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index c6dcc3b..89848af 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -1525,7 +1525,7 @@
   if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType())
     S.Diag(Attr.getLoc(), diag::err_mode_not_primitive);
   else if (IntegerMode) {
-    if (!OldTy->isIntegralType())
+    if (!OldTy->isIntegralOrEnumerationType())
       S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
   } else if (ComplexMode) {
     if (!OldTy->isComplexType())
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index bb5fa71..347b597 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -3913,7 +3913,8 @@
 
   if (!castType->isArithmeticType()) {
     QualType castExprType = castExpr->getType();
-    if (!castExprType->isIntegralType() && castExprType->isArithmeticType())
+    if (!castExprType->isIntegralType() && 
+        castExprType->isArithmeticType())
       return Diag(castExpr->getLocStart(),
                   diag::err_cast_pointer_from_non_pointer_int)
         << castExprType << castExpr->getSourceRange();
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index 4c93fba..e478d9a 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -720,7 +720,7 @@
   Expr *ArraySize = (Expr *)ArraySizeE.get();
   if (ArraySize && !ArraySize->isTypeDependent()) {
     QualType SizeType = ArraySize->getType();
-    if (!SizeType->isIntegralType() && !SizeType->isEnumeralType())
+    if (!SizeType->isIntegralOrEnumerationType())
       return ExprError(Diag(ArraySize->getSourceRange().getBegin(),
                             diag::err_array_size_not_integral)
         << SizeType << ArraySize->getSourceRange());
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 89eb90b..3de8e73 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -962,7 +962,7 @@
     // Complex promotion (Clang extension)
     SCS.Second = ICK_Complex_Promotion;
     FromType = ToType.getUnqualifiedType();
-  } else if ((FromType->isIntegralType() || FromType->isEnumeralType()) &&
+  } else if (FromType->isIntegralOrEnumerationType() &&
            (ToType->isIntegralType() && !ToType->isEnumeralType())) {
     // Integral conversions (C++ 4.7).
     SCS.Second = ICK_Integral_Conversion;
@@ -983,7 +983,7 @@
   } else if ((FromType->isFloatingType() &&
               ToType->isIntegralType() && (!ToType->isBooleanType() &&
                                            !ToType->isEnumeralType())) ||
-             ((FromType->isIntegralType() || FromType->isEnumeralType()) &&
+             (FromType->isIntegralOrEnumerationType() &&
               ToType->isFloatingType())) {
     // Floating-integral conversions (C++ 4.9).
     SCS.Second = ICK_Floating_Integral;
@@ -1273,7 +1273,7 @@
   // Handle value-dependent integral null pointer constants correctly.
   // http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#903
   if (Expr->isValueDependent() && !Expr->isTypeDependent() &&
-      Expr->getType()->isIntegralType())
+      Expr->getType()->isIntegerType() && !Expr->getType()->isEnumeralType())
     return !InOverloadResolution;
 
   return Expr->isNullPointerConstant(Context,
diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index 0c510fb..cd71239 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -403,7 +403,7 @@
   if (const CastExpr *ImplicitCast = dyn_cast<ImplicitCastExpr>(expr)) {
     const Expr *ExprBeforePromotion = ImplicitCast->getSubExpr();
     QualType TypeBeforePromotion = ExprBeforePromotion->getType();
-    if (TypeBeforePromotion->isIntegralType()) {
+    if (TypeBeforePromotion->isIntegralOrEnumerationType()) {
       return TypeBeforePromotion;
     }
   }
@@ -445,7 +445,7 @@
       if (CXXConversionDecl *Conversion
             = dyn_cast<CXXConversionDecl>((*I)->getUnderlyingDecl()))
         if (Conversion->getConversionType().getNonReferenceType()
-              ->isIntegralType()) {
+              ->isIntegralOrEnumerationType()) {
           if (Conversion->isExplicit())
             ExplicitConversions.addDecl(I.getDecl(), I.getAccess());
           else
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index 234665c..a2d4de5 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -549,7 +549,7 @@
   // (optionally cv-qualified) types:
   //
   //       -- integral or enumeration type,
-  if (T->isIntegralType() || T->isEnumeralType() ||
+  if (T->isIntegralOrEnumerationType() ||
       //   -- pointer to object or pointer to function,
       (T->isPointerType() &&
        (T->getAs<PointerType>()->getPointeeType()->isObjectType() ||
@@ -2777,7 +2777,7 @@
   //        conversions (4.7) are applied.
   QualType ParamType = InstantiatedParamType;
   QualType ArgType = Arg->getType();
-  if (ParamType->isIntegralType() || ParamType->isEnumeralType()) {
+  if (ParamType->isIntegralOrEnumerationType()) {
     // C++ [temp.arg.nontype]p1:
     //   A template-argument for a non-type, non-template
     //   template-parameter shall be one of:
@@ -2787,7 +2787,7 @@
     //     -- the name of a non-type template-parameter; or
     SourceLocation NonConstantLoc;
     llvm::APSInt Value;
-    if (!ArgType->isIntegralType() && !ArgType->isEnumeralType()) {
+    if (!ArgType->isIntegralOrEnumerationType()) {
       Diag(Arg->getSourceRange().getBegin(),
            diag::err_template_arg_not_integral_or_enumeral)
         << ArgType << Arg->getSourceRange();