370   if (T1.isNull() || T2.isNull())  in IsStructurallyEquivalent()
371     return T1.isNull() && T2.isNull();  in IsStructurallyEquivalent()
1473   if (ToElementType.isNull())  in VisitComplexType()
1481   if (ToPointeeType.isNull())  in VisitPointerType()
1490   if (ToPointeeType.isNull())  in VisitBlockPointerType()
1500   if (ToPointeeType.isNull())  in VisitLValueReferenceType()
1510   if (ToPointeeType.isNull())  in VisitRValueReferenceType()
1519   if (ToPointeeType.isNull())  in VisitMemberPointerType()
1529   if (ToElementType.isNull())  in VisitConstantArrayType()
1541   if (ToElementType.isNull())  in VisitIncompleteArrayType()
1551   if (ToElementType.isNull())  in VisitVariableArrayType()
1567   if (ToElementType.isNull())  in VisitVectorType()
1577   if (ToElementType.isNull())  in VisitExtVectorType()
1589   if (ToResultType.isNull())  in VisitFunctionNoProtoType()
1598   if (ToResultType.isNull())  in VisitFunctionProtoType()
1605     if (ArgType.isNull())  in VisitFunctionProtoType()
1614     if (ExceptionType.isNull())  in VisitFunctionProtoType()
1641   if (ToInnerType.isNull())  in VisitParenType()
1666   if (ToUnderlyingType.isNull())  in VisitTypeOfType()
1679   if (UnderlyingType.isNull())  in VisitDecltypeType()
1688   if (ToBaseType.isNull() || ToUnderlyingType.isNull())  in VisitUnaryTransformType()
1700   if (!FromDeduced.isNull()) {  in VisitAutoType()
1702     if (ToDeduced.isNull())  in VisitAutoType()
1734   if (!FromModifiedType.isNull()) {  in VisitAttributedType()
1736     if (ToModifiedType.isNull())  in VisitAttributedType()
1739   if (!FromEquivalentType.isNull()) {  in VisitAttributedType()
1741     if (ToEquivalentType.isNull())  in VisitAttributedType()
1752   if (ToTemplate.isNull())  in VisitTemplateSpecializationType()
1764     if (ToCanonType.isNull())  in VisitTemplateSpecializationType()
1783   if (ToNamedType.isNull())  in VisitElaboratedType()
1801   if (ToBaseType.isNull())  in VisitObjCObjectType()
1821   if (ToPointeeType.isNull())  in VisitObjCObjectPointerType()
2002       if (T.isNull())  in ImportDefinition()
2058   if (T.isNull())  in ImportDefinition()
2062   if (ToPromotionType.isNull())  in ImportDefinition()
2105     if (ToType.isNull())  in ImportTemplateArgument()
2112     if (ToType.isNull())  in ImportTemplateArgument()
2120     if (!To || ToType.isNull())  in ImportTemplateArgument()
2127     if (ToType.isNull())  in ImportTemplateArgument()
2134     if (ToTemplate.isNull())  in ImportTemplateArgument()
2143     if (ToTemplate.isNull())  in ImportTemplateArgument()
2175     if (To.isNull() && !FromArgs[I].isNull())  in ImportTemplateArguments()
2367   if (T.isNull())  in VisitTypedefNameDecl()
2463   if (ToIntegerType.isNull())  in VisitEnumDecl()
2621   if (T.isNull())  in VisitEnumConstantDecl()
2750   if (T.isNull())  in VisitFunctionDecl()
2829     if (T.isNull())  in VisitFunctionDecl()
2908   if (T.isNull())  in VisitFieldDecl()
2970   if (T.isNull())  in VisitIndirectFieldDecl()
3027   if (T.isNull())  in VisitObjCIvarDecl()
3087               if (T.isNull())  in VisitVarDecl()
3146   if (T.isNull())  in VisitVarDecl()
3184   if (T.isNull())  in VisitImplicitParamDecl()
3210   if (T.isNull())  in VisitParmVarDecl()
3296   if (ResultTy.isNull())  in VisitObjCMethodDecl()
3962   if (T.isNull())  in VisitNonTypeTemplateParmDecl()
4252   if (T.isNull())  in VisitVarTemplateDecl()
4363     if (T.isNull())  in VisitVarTemplateSpecializationDecl()
4424   if (T.isNull())  in VisitDeclRefExpr()
4443   if (T.isNull())  in VisitIntegerLiteral()
4453   if (T.isNull())  in VisitCharacterLiteral()
4474   if (T.isNull())  in VisitUnaryOperator()
4514   if (T.isNull())  in VisitBinaryOperator()
4534   if (T.isNull())  in VisitCompoundAssignOperator()
4538   if (CompLHSType.isNull())  in VisitCompoundAssignOperator()
4542   if (CompResultType.isNull())  in VisitCompoundAssignOperator()
4571   if (T.isNull())  in VisitImplicitCastExpr()
4588   if (T.isNull())  in VisitCStyleCastExpr()
4624   if (FromT.isNull())  in Import()
4638   if (ToT.isNull())  in Import()
4654   if (T.isNull())  in Import()
4830       if (!T.isNull()) {  in Import()
4910     if (replacement.isNull()) return TemplateName();  in Import()
4927     if (ArgPack.isNull())  in Import()
5062     if (T.isNull())  in Import()
5071     if (T.isNull())  in Import()
5080     if (T.isNull())  in Import()
5111   if (FromSel.isNull())  in Import()