[llvm] [llvm] Use LazyValueInfo to improve llvm.objectsize computation (PR #114673)

[Harald van Dijk via llvm-commits]

https://github.com/hvdijk approved this pull request.

Thanks, looks good to me!

You updated the commit according to the change requested by @nikic, but the PR title and description are still the original, so just make sure that when you merge and squash, you do not accidentally overwrite your correct commit message with the older PR description :)

https://github.com/llvm/llvm-project/pull/114673