[llvm] [ArgPromotion] Handle pointer arguments of recursive calls (PR #78735)

[Vedant Paranjape via llvm-commits]

vedantparanjape-amd wrote:

> Can you please update the PR description? It doesn't explain at all what (and why) the PR does and just mentions that it causes a compiler crash -- which it presumably no longer does?

Yes, I will do this.

https://github.com/llvm/llvm-project/pull/78735