[llvm] [AArch64][SelectionDAG] Add CodeGen support for scalar FEAT_CPA (PR #105669)

[Rodolfo Wottrich via llvm-commits]

rgwott wrote:

> maybe the commit message should link to https://developer.arm.com/documentation/ddi0602/2024-12/Base-Instructions/ADDPT--Add-checked-pointer- instead of the top-level instruction reference?

I mean, yes and no. This is just one of the CPA instructions (although the most important one). I will make reference to it alongside the link.



https://github.com/llvm/llvm-project/pull/105669