[llvm] [ValueTracking] Support Array and Structure in contains* check (PR #226748)

[Nikita Popov via llvm-commits]

nikic wrote:

> Some notes: It is very confusing that Vector is not an aggregate and ConstantVector is an ConstantAggregate:)

ConstantVector is a ConstantAggregate. You are probably confusing it with ConstantDataVector? (Only ConstantAggregate can contain undef/poison.)

https://github.com/llvm/llvm-project/pull/226748