[llvm] [AArch64] Stack probing for dynamic allocas in SelectionDAG (PR #66525)

[Momchil Velikov via llvm-commits]

momchil-velikov wrote:

> Oh, I see, the new code is effectively guarded by an `!isTargetWindows()`. I guess that's fine, then. Opened #73975 to track the Windows-specific bits I've noted on the reviews.
> 
> You might want to put a note in AArch64FrameLowering::hasReservedCallFrame mentioning that you're making assumptions about the implementation elsewhere. (We could conceivably mess with the way that works in the future.)

I'm missing something here. Which assumptions?

https://github.com/llvm/llvm-project/pull/66525