[llvm] [aarch64][win] Add support for import call optimization (equivalent to MSVC /d2ImportCallOptimization) (PR #121516)

[Daniel Paoliello via llvm-commits]

dpaoliello wrote:

> > > It looks like the change introduced a use-after-poison
> > 
> > 
> > Investigating...
> 
> I found the root cause: even though I modeled "Called Globals" after "Call Site Info", I didn't all the move/copy/erase functions that keep the Calle Site Info in-sync with changes to the instructions. It should be an easy fix since I can rename and update the existing functions.

PR with fix: #122762

https://github.com/llvm/llvm-project/pull/121516