511                                     DiagnosticsEngine &Diags, bool IsSystem,  in checkDiagnosticMappings()  argument
515   if (IsSystem) {  in checkDiagnosticMappings()
602   return checkDiagnosticMappings(*Diags, ExistingDiags, TopM->IsSystem,  in ReadDiagnosticOptions()
2889           bool IsSystem = I >= NumUserInputs;  in ReadControlBlock()  local
2892               FI.FilenameAsRequested, IsSystem, FI.Overridden,  in ReadControlBlock()
5773       bool IsSystem = Record[Idx++];  in ReadSubmoduleBlock()  local
5824       CurrentModule->IsSystem = IsSystem || CurrentModule->IsSystem;  in ReadSubmoduleBlock()
9469                             bool IsSystem)>  in visitInputFileInfos()
9476     bool IsSystem = I >= NumUserInputs;  in visitInputFileInfos()  local
9478     Visitor(IFI, IsSystem);  in visitInputFileInfos()
9491     bool IsSystem = I >= NumUserInputs;  in visitInputFiles()  local
9493     Visitor(IF, IsSystem);  in visitInputFiles()