[llvm-branch-commits] [llvm] [AArch64][SME] Support split ZPR and PPR area allocation (PR #142392)

[Benjamin Maxwell via llvm-branch-commits]

MacDue wrote:

Rebased this PR stack on the changes from #138609... Which makes things even hairier :sweat_smile: It would be nice if all these modes were not so intertwined in the code.  

https://github.com/llvm/llvm-project/pull/142392