[llvm-branch-commits] [llvm] [AArch64] Prepare for split ZPR and PPR area allocation (NFCI) (PR #142391)

[Benjamin Maxwell via llvm-branch-commits]

MacDue wrote:

This is a stacked PR. Please see the final PR for context.

1. https://github.com/llvm/llvm-project/pull/142390
2. :point_right: https://github.com/llvm/llvm-project/pull/142391
3. https://github.com/llvm/llvm-project/pull/142392 

https://github.com/llvm/llvm-project/pull/142391