[llvm] [SLP] Use known bits of each value in computeMinimumValueSizes (PR #82013)

[Alexey Bataev via llvm-commits]

alexey-bataev wrote:

There is a general rework of the whole analysis https://github.com/llvm/llvm-project/pull/78976

https://github.com/llvm/llvm-project/pull/82013