[llvm] [VPlan] Simplify VPBlendRecipes to select instructions (PR #133993)

[Ramkumar Ramachandra via llvm-commits]

https://github.com/artagnon commented:

Not sure what to think of this, as I don't see a test case with a compelling diff. Can you add one to motivate the patch?

https://github.com/llvm/llvm-project/pull/133993