515   FunctionDecl *fn = dyn_cast<FunctionDecl>(CurContext);  in makeUnavailableInSystemHeader()
602   FunctionDecl *FD = getCurFunctionDecl();  in diagnoseZeroToNullptrConversion()
727   if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {  in ShouldRemoveFromUnused()
737     const FunctionDecl *DeclToCheck;  in ShouldRemoveFromUnused()
782   if (auto *FD = dyn_cast<FunctionDecl>(ND))  in isFunctionOrVarDeclExternC()
821     if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {  in getUndefinedButUsed()
884       if (const auto *BaseD = dyn_cast<FunctionDecl>(VD)) {  in checkUndefinedButUsed()
889           const auto *Func = cast<FunctionDecl>(  in checkUndefinedButUsed()
898     } else if (auto *FD = dyn_cast<FunctionDecl>(VD)) {  in checkUndefinedButUsed()
995       if (const FunctionDecl *FD =  in IsRecordFullyDefined()
996           dyn_cast<FunctionDecl>((*I)->getFriendDecl()))  in IsRecordFullyDefined()
1077       if (auto Func = dyn_cast<FunctionDecl>(PII.first))  in ActOnEndOfTranslationUnitFragment()
1186         !(isa<FunctionDecl>(PrevDecl) || isa<VarDecl>(PrevDecl)))  in ActOnEndOfTranslationUnit()
1261       if (auto *FD = dyn_cast<FunctionDecl>(D)) {  in ActOnEndOfTranslationUnit()
1347       if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I)) {  in ActOnEndOfTranslationUnit()
1348         const FunctionDecl *DiagD;  in ActOnEndOfTranslationUnit()
1468 FunctionDecl *Sema::getCurFunctionDecl(bool AllowLambda) {  in getCurFunctionDecl()
1470   return dyn_cast<FunctionDecl>(DC);  in getCurFunctionDecl()
1482   if (isa<ObjCMethodDecl>(DC) || isa<FunctionDecl>(DC))  in getCurFunctionOrMethodDecl()
1599   auto *FD = dyn_cast<FunctionDecl>(CurContext);  in hasUncompilableErrorOccurred()
1614 static void emitCallStackNotes(Sema &S, FunctionDecl *FD) {  in emitCallStackNotes()
1665   llvm::SmallVector<CanonicalDeclPtr<FunctionDecl>, 4> UsePath;
1695     if (auto *FD = dyn_cast<FunctionDecl>(D))  in visitUsedDecl()
1716   void checkFunc(SourceLocation Loc, FunctionDecl *FD) {  in checkFunc()
1718     FunctionDecl *Caller = UsePath.empty() ? nullptr : UsePath.back();  in checkFunc()
1747     if (auto *FD = dyn_cast<FunctionDecl>(D)) {  in checkRecordedDecl()
1756   void emitDeferredDiags(FunctionDecl *FD, bool ShowCallStack) {  in emitDeferredDiags()
1826                                                    FunctionDecl *Fn, Sema &S)  in SemaDiagnosticBuilder()
1872 Sema::targetDiag(SourceLocation Loc, unsigned DiagID, FunctionDecl *FD) {  in targetDiag()
1940   FunctionDecl *FD = isa<FunctionDecl>(C) ? cast<FunctionDecl>(C)  in checkTypeSupport()
1941                                           : dyn_cast_or_null<FunctionDecl>(D);  in checkTypeSupport()
2460       if (const FunctionDecl *OverloadDecl  in tryExprAsCall()
2461             = dyn_cast<FunctionDecl>((*it)->getUnderlyingDecl())) {  in tryExprAsCall()
2497     if (const FunctionDecl *Fun = dyn_cast<FunctionDecl>(DeclRef->getDecl())) {  in tryExprAsCall()
2576     const FunctionDecl *OverloadDecl = cast<FunctionDecl>(*It);  in notePlausibleOverloads()
2605     if (const auto *FD = dyn_cast<FunctionDecl>(ND))  in IsCPUDispatchCPUSpecificMultiVersion()
2718       return isa<FunctionDecl>(ND) || isa<FunctionTemplateDecl>(ND) ||  in isDeclaratorFunctionLike()