[llvm] [AVR] Fix a bug in selection of ANY_EXTEND (PR #132398)

[via llvm-commits]

dakkshesh07 wrote:

> > I can't reproduce the original crash - [this](https://github.com/llvm/llvm-project/issues/132203#issuecomment-2742909317) compiles successfully on my LLVM ([fbaf3b8](https://github.com/llvm/llvm-project/commit/fbaf3b895c028c055290588221cde3f5146cd661), i.e. main from a couple of minutes ago).
> 
> Did you do `-DLLVM_ENABLE_EXPENSIVE_CHECKS=On` before building llvm from source? Maybe you can try this `-DLLVM_ENABLE_EXPENSIVE_CHECKS=On` when doing cmake ?

Can confirm, with expensive checks enabled the crash occurs otherwise it doesn't. 

https://github.com/llvm/llvm-project/pull/132398