[clang] [Clang][CodeGen] Add metadata for load from reference (PR #98746)

[Nikita Popov via cfe-commits]

https://github.com/nikic commented:

I think this is missing some test coverage for the `!align` values. Right now it just includes test updates, and I don't think the actual value is checked anywhere.

https://github.com/llvm/llvm-project/pull/98746