llvm-project

f3867f90 - [llvm] Use *Map::try_emplace (NFC) (#143321)

[llvm] Use *Map::try_emplace (NFC) (#143321) - try_emplace(Key) is shorter than insert(std::make_pair(Key, 0)). - try_emplace performs value initialization without value parameters. - We overwrite values on successful insertion anyway.