llvm-project

2f0cd0c6 - [NFCI] Move ProfOStream from InstrProfWriter.cpp to InstrProf.h/cpp (#136791)

[NFCI] Move ProfOStream from InstrProfWriter.cpp to InstrProf.h/cpp (#136791) ProfOStream is a wrapper class for output stream, and used by InstrProfWriter.cpp to serialize various profiles, like PGO profiles and MemProf. This change proposes to move it into InstrProf.h/cpp. After this is in, InstrProfWriter can dispatch serialization of various formats into methods like `obj->serialize()`, and the serialization code could be move out of InstrProfWriter.cpp into individual classes (each in a smaller cpp file). One example is that we can gradually move writeMemprof [1] into llvm/*/ProfileData/MemProf.h/cpp, where a couple of classes already have `serialize/deserialize` methods. [1] https://github.com/llvm/llvm-project/blob/85b35a90770b6053f91d79ca685cdfa4bf6499a4/llvm/lib/ProfileData/InstrProfWriter.cpp#L774-L791