[llvm] Fix parsing out-of-order ValueInfos (PR #73239)

[Steven Wu via llvm-commits]

cachemeifyoucan wrote:

I am not really familiar with devirtualization part of the summary but is the real bug that there should not be two `^4` in the same module?

Maybe we should correctly error out instead of assertion in this case.

https://github.com/llvm/llvm-project/pull/73239