[llvm] [AArch64] Fold tbl1 intrinsic into dup when broadcasting (PR #170872)

[David Green via llvm-commits]

davemgreen wrote:

Hi - yes with #169748 this is likely already handled. This is where I would expect an optimization like this to be, but we would usually add DAG combines for things that are not already optimized in IR or that can be produced during ISel (usually from legalization artifacts).

https://github.com/llvm/llvm-project/pull/170872