[clang] [lld] [llvm] [Windows] Add support for emitting PGO/LTO magic strings in the Windows PE debug directory (PR #114260)

[Mikołaj Piróg via cfe-commits]

mikolaj-pirog wrote:

I would like to benchmark `lld` after this change, since I have added a loop that goes through every section of every object file. Could someone point in the direction of a good benchmark for that? I was thinking I can benchmark on the linking of `clang` or any other big project as a reference 

https://github.com/llvm/llvm-project/pull/114260