[llvm] [SLP]Initial support for (masked)loads + compress and (masked)interleaved (PR #132099)

[David Spickett via llvm-commits]

DavidSpickett wrote:

This did not fail on SVE VLA (vector length agnostic aka scalable vectors), but did on VLS (vector length specific aka fixed size vectors)

https://github.com/llvm/llvm-project/pull/132099