186         (Header.ModTime && File->getModificationTime() != *Header.ModTime))  in findHeader()
272   } else if (Header.HasBuiltinHeader && !Header.Size && !Header.ModTime) {  in resolveHeader()
285     if (!Header.Size && !Header.ModTime)  in resolveHeader()
1124   if ((Header.Size || Header.ModTime) && !Header.IsUmbrella &&  in addUnresolvedHeader()
1128     if (Header.ModTime)  in addUnresolvedHeader()
1129       LazyHeadersByModTime[*Header.ModTime].push_back(Mod);  in addUnresolvedHeader()
2289       enum Attribute { Size, ModTime, Unknown };  in parseHeaderDecl()  enumerator
2294                   .Case("mtime", ModTime)  in parseHeaderDecl()
2309       case ModTime:  in parseHeaderDecl()
2310         if (Header.ModTime)  in parseHeaderDecl()
2318         Header.ModTime = Tok.getInteger();  in parseHeaderDecl()