[llvm-branch-commits] [llvm] release/20.x: [AArch64][SME] Prevent spills of ZT0 when ZA is not enabled (PR #137683)

[Benjamin Maxwell via llvm-branch-commits]

MacDue wrote:

@sdesmalen-arm What do you think about merging this PR to the release branch?

https://github.com/llvm/llvm-project/pull/137683