[llvm] [VPlan] Recursively match operands of interleave group (PR #164839)

[Ramkumar Ramachandra via llvm-commits]

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artagnon wrote:

I don't think this regression can be resolved without chainUsesScalarValues (one of my other patches) or something of the nature.

https://github.com/llvm/llvm-project/pull/164839