[llvm] [VPlan] Consider address computation cost in VPInterleaveRecipe. (PR #148808)

[Mel Chen via llvm-commits]

Mel-Chen wrote:

Could you first add a few lit test cases for interleaved accesses with factor 5 as a pre-commit? Also, I suggest making the change in getInterleavedMemoryOpCost, which might be a more appropriate place.

https://github.com/llvm/llvm-project/pull/148808