[llvm] [LSR] Do not consider uses in lifetime intrinsics (PR #149492)

[Nikita Popov via llvm-commits]

nikic wrote:

> We have other intrinsics like this that convey information, but get dropped late - assumes spring to mind. Do we have some utility for an ignorable use somewhere?

We have isAssumeLikeIntrinsic().

https://github.com/llvm/llvm-project/pull/149492