[llvm] [ValueTypes] Automatically assign value numbers (NFC) (PR #169071)

[Sergei Barannikov via llvm-commits]

https://github.com/s-barannikov commented:

Can you confirm that the generated file is the same?
Also, some targets use PtrValueType to define their own types; can this cause issues?


https://github.com/llvm/llvm-project/pull/169071