llvm-project

8615ead9 - [clang] NFCI: Make `ModuleFile::File` non-optional (#74892)

[clang] NFCI: Make `ModuleFile::File` non-optional (#74892) AFAICT, `ModuleFile::File` can be `std::nullopt` only for PCM files loaded from the standard input. This patch starts setting that variable to `FileManager::getSTDIN()` in that case, which makes it possible to remove the optionality, and also simplifies code that actually reads the file. This is part of an effort to get rid of `Optional{File,Directory}EntryRefDegradesTo{File,Directory}EntryPtr`.