[llvm] [StackFrameLayoutAnalysis] Add basic Scalable stack slot output (PR #99883)

[David Green via llvm-commits]

davemgreen wrote:

> I’ll see if I can find a way to sort out the offsets being incorrect.

Thanks folks. I'd be interested if there was a good way to handle this. Unfortunately we might need to invent something. The AArch64 stack frame can have scalable and fixed-width objects combined in its layout, where some parts are fp-based and others are sp. I don't know if there is a way at the moment to get the real offset and was wondering what the best way to add it might be.

https://github.com/llvm/llvm-project/pull/99883