[llvm-branch-commits] [llvm] [llvm-reduce] Run AssignGUIDPass when loading BC (PR #208965)

[Mircea Trofin via llvm-branch-commits]

mtrofin wrote:

> > Do we know why it might not have GUID metadata? Is it a reducer artifact? I.e. should the reducer know not the remove GUID if present?
> 
> I ran into this error with ThinLTO BC straight out of clang in a distributed ThinLTO setup. I'm still not sure why GUIDs were not fully present, but they were missing from somewhere.
> 

I'd +1 understanding the root cause first?

https://github.com/llvm/llvm-project/pull/208965