11193     const FunctionDecl *OldFD, const FunctionDecl *NewFD,  in areMultiversionVariantFunctionsCompatible()  argument
11220   if (NoProtoDiagID.getDiagID() != 0 && OldFD &&  in areMultiversionVariantFunctionsCompatible()
11221       !OldFD->getType()->getAs<FunctionProtoType>()) {  in areMultiversionVariantFunctionsCompatible()
11222     Diag(OldFD->getLocation(), NoProtoDiagID);  in areMultiversionVariantFunctionsCompatible()
11271   if (OldFD) {  in areMultiversionVariantFunctionsCompatible()
11272     QualType OldQType = Context.getCanonicalType(OldFD->getType());  in areMultiversionVariantFunctionsCompatible()
11285     if (OldFD->getConstexprKind() != NewFD->getConstexprKind())  in areMultiversionVariantFunctionsCompatible()
11288     if (OldFD->isInlineSpecified() != NewFD->isInlineSpecified())  in areMultiversionVariantFunctionsCompatible()
11291     if (OldFD->getFormalLinkage() != NewFD->getFormalLinkage())  in areMultiversionVariantFunctionsCompatible()
11294     if (!CLinkageMayDiffer && OldFD->isExternC() != NewFD->isExternC())  in areMultiversionVariantFunctionsCompatible()
11298             OldFD->getType()->getAs<FunctionProtoType>(), OldFD->getLocation(),  in areMultiversionVariantFunctionsCompatible()
11305 static bool CheckMultiVersionAdditionalRules(Sema &S, const FunctionDecl *OldFD,  in CheckMultiVersionAdditionalRules()  argument
11311     if (OldFD)  in CheckMultiVersionAdditionalRules()
11312       S.Diag(OldFD->getLocation(), diag::note_previous_declaration);  in CheckMultiVersionAdditionalRules()
11320   if (CausesMV && OldFD &&  in CheckMultiVersionAdditionalRules()
11321       checkNonMultiVersionCompatAttributes(S, OldFD, NewFD, MVKind))  in CheckMultiVersionAdditionalRules()
11328   if (OldFD && CausesMV && OldFD->isUsed(false))  in CheckMultiVersionAdditionalRules()
11332       OldFD, NewFD, S.PDiag(diag::err_multiversion_noproto),  in CheckMultiVersionAdditionalRules()
11385 static bool CheckTargetCausesMultiVersioning(Sema &S, FunctionDecl *OldFD,  in CheckTargetCausesMultiVersioning()  argument
11392   const auto *OldTA = OldFD->getAttr<TargetAttr>();  in CheckTargetCausesMultiVersioning()
11393   const auto *OldTVA = OldFD->getAttr<TargetVersionAttr>();  in CheckTargetCausesMultiVersioning()
11403   if (CheckMultiVersionAdditionalRules(S, OldFD, NewFD, true,  in CheckTargetCausesMultiVersioning()
11416   if (!OldFD->isMultiVersion() &&  in CheckTargetCausesMultiVersioning()
11420     OldDecl = OldFD;  in CheckTargetCausesMultiVersioning()
11421     OldFD->setIsMultiVersion();  in CheckTargetCausesMultiVersioning()
11426   if (CheckMultiVersionValue(S, OldFD)) {  in CheckTargetCausesMultiVersioning()
11444       S.Diag(OldFD->getLocation(), diag::note_previous_declaration);  in CheckTargetCausesMultiVersioning()
11460       S.Diag(OldFD->getLocation(), diag::note_previous_declaration);  in CheckTargetCausesMultiVersioning()
11466   for (const auto *FD : OldFD->redecls()) {  in CheckTargetCausesMultiVersioning()
11482   OldFD->setIsMultiVersion();  in CheckTargetCausesMultiVersioning()
11505     Sema &S, FunctionDecl *OldFD, FunctionDecl *NewFD,  in CheckMultiVersionAdditionalDecl()  argument
11511   MultiVersionKind OldMVKind = OldFD->getMultiVersionKind();  in CheckMultiVersionAdditionalDecl()
11515     S.Diag(OldFD->getLocation(), diag::note_previous_declaration);  in CheckMultiVersionAdditionalDecl()
11697   if (CheckMultiVersionAdditionalRules(S, OldFD, NewFD,  in CheckMultiVersionAdditionalDecl()
11698                                        !OldFD->isMultiVersion(), NewMVKind)) {  in CheckMultiVersionAdditionalDecl()
11704   if (!OldFD->isMultiVersion()) {  in CheckMultiVersionAdditionalDecl()
11705     OldFD->setIsMultiVersion();  in CheckMultiVersionAdditionalDecl()
11708     OldDecl = OldFD;  in CheckMultiVersionAdditionalDecl()
11764   FunctionDecl *OldFD = OldDecl->getAsFunction();  in CheckMultiVersionFunction()  local
11766   if (!OldFD->isMultiVersion() && MVKind == MultiVersionKind::None) {  in CheckMultiVersionFunction()
11767     if (NewTVA || !OldFD->getAttr<TargetVersionAttr>())  in CheckMultiVersionFunction()
11778       OldFD->setIsMultiVersion();  in CheckMultiVersionFunction()
11779       OldDecl = OldFD;  in CheckMultiVersionFunction()
11787   if (OldFD->isMultiVersion() && MVKind == MultiVersionKind::None &&  in CheckMultiVersionFunction()
11788       OldFD->getMultiVersionKind() != MultiVersionKind::TargetClones &&  in CheckMultiVersionFunction()
11789       OldFD->getMultiVersionKind() != MultiVersionKind::TargetVersion) {  in CheckMultiVersionFunction()
11791         << (OldFD->getMultiVersionKind() != MultiVersionKind::Target);  in CheckMultiVersionFunction()
11796   if (!OldFD->isMultiVersion()) {  in CheckMultiVersionFunction()
11800       return CheckTargetCausesMultiVersioning(S, OldFD, NewFD, Redeclaration,  in CheckMultiVersionFunction()
11803       if (OldFD->isUsed(false)) {  in CheckMultiVersionFunction()
11807       OldFD->setIsMultiVersion();  in CheckMultiVersionFunction()
11820   return CheckMultiVersionAdditionalDecl(S, OldFD, NewFD, MVKind, NewCPUDisp,  in CheckMultiVersionFunction()
12002       auto *OldFD = OldTemplateDecl->getTemplatedDecl();  in CheckFunctionDeclaration()  local
12012       NewFD->setPreviousDeclaration(OldFD);  in CheckFunctionDeclaration()
12026         if (OldFD->isDeleted()) {  in CheckFunctionDeclaration()
12028           assert(OldFD->getCanonicalDecl() == OldFD);  in CheckFunctionDeclaration()
12030           OldFD->setDeletedAsWritten(false);  in CheckFunctionDeclaration()
12036         auto *OldFD = cast<FunctionDecl>(OldDecl);  in CheckFunctionDeclaration()  local
12038         NewFD->setPreviousDeclaration(OldFD);  in CheckFunctionDeclaration()
12040           NewFD->setAccess(OldFD->getAccess());  in CheckFunctionDeclaration()