[llvm] Use (de)interleaving intrinsics for fixed-length vectors (PR #202583)

[Luke Lau via llvm-commits]

lukel97 wrote:

> /test-suite

You need to be a member of the committers team to use the /test-suite command since the workflow does arbitrary code execution. But it looks like you're a member of the llvm organisation, just not the committers team? Maybe you need to request commit access again. In any case If you resolve the merge conflicts I can kick off another run for you 

https://github.com/llvm/llvm-project/pull/202583