[llvm] [clang] [AArch64][SVE2.1] Add intrinsics for quadword loads/stores with unscaled offset (PR #70474)

[David Sherwood via cfe-commits]

https://github.com/david-arm commented:

Wow, this is a huge patch. :) It took me a few hours to work through all the tests, and it's quite possible I've missed something. However, overall it looks fine and I can't see any major issues. I think there is one missing test, but once that's fixed I'll approve it!

https://github.com/llvm/llvm-project/pull/70474