[llvm-branch-commits] [llvm] DAG: Avoid breaking legal vector_shuffle with multiple uses (PR #123712)

[Philip Reames via llvm-branch-commits]

https://github.com/preames approved this pull request.

LGTM

I suspect we'll want to refine the profitability here over the time, but this seems reasonable as a stepping stone.

https://github.com/llvm/llvm-project/pull/123712