[llvm] [VPlan] Compute cost of replicating calls in VPlan. (NFCI) (PR #154291)

[David Sherwood via llvm-commits]

https://github.com/david-arm commented:

Thanks for this! Nice to see the legacy cost model being removed in more places. :) I just had one comment about the existing code.

https://github.com/llvm/llvm-project/pull/154291