llvm-project

ffcbaa25 - [ADT] Refactor DenseMapInfo for integer types (NFC) (#155549)

[ADT] Refactor DenseMapInfo for integer types (NFC) (#155549) This patch consolidates DenseMapInfo<T> for integer types T with a common templated implementation. DenseMapInfo<char> is excluded because it uses ~0 for the empty key despite char being a signed type. Also, we preserve the tombstone key value for long, which is: std::numeric_limits<long>::max() - 1