[llvm] Default aarch64-min-jump-table-entries to 9 (PR #98391)

[David Sherwood via llvm-commits]

david-arm wrote:

Have you run this patch several times with perlbench from SPEC2017 to verify the before and after results? At the time I created https://github.com/llvm/llvm-project/pull/71166 I saw an improvement in performance, although I realise perlbench can be noisy. Do you have any SPEC2017 results you can share on this PR? Thanks!

https://github.com/llvm/llvm-project/pull/98391