llvm-project

b4ae4192 - [clang] [NFC] explicitly check if ParentMap contains key (#121736)

[clang] [NFC] explicitly check if ParentMap contains key (#121736) The implementation of ParentMap assumes that the key is absent if it is mapped to nullptr. This breaks when trying to store a tuple as the value type. Remove this assumption by explicit uses of `try_emplace()`.