[clang] [compiler-rt] [llvm] [ASan] Add metadata to renamed instructions so ASan doesn't use the i… (PR #119387)

[via llvm-commits]

gbMattN wrote:

> I don't see (from description) why it's needed.

A reproducer of the issue can be seen [failing on godbolt here](https://godbolt.org/z/KjPP4jrod)
This is based off [this bugzilla ticket](https://bugs.llvm.org/show_bug.cgi?id=47982)

I forgot to put this at the top when I undrafted the pull request, apologies for the confusion.

https://github.com/llvm/llvm-project/pull/119387