[llvm] [AArch64][SVE] Pair SVE fill/spill into LDP/STP with -msve-vector-bits=128. (PR #134068)

[David Spickett via llvm-commits]

DavidSpickett wrote:

Reverted due to https://lab.llvm.org/buildbot/#/builders/41/builds/6016. That build is SVE(1) running on Graviton 3.

Vector length specific fails in the same way - https://lab.llvm.org/buildbot/#/builders/4/builds/6128, as does SVE2 VLA https://lab.llvm.org/buildbot/#/builders/199/builds/2674.

https://github.com/llvm/llvm-project/pull/134068