[clang] [Clang][CodeGen] Emit alignment information for indirect arguments (PR #201999)

[Sayan Sivakumaran via cfe-commits]

sivakusayan wrote:

I'm going to temporarily `git checkout --theirs` through the UI so I can merge from `main` through the UI. I'll then make the test fix locally and push it up. The last time I squash merged from main instead of through the UI I accidentally added a bunch of unrelated reviewers, though it's possible I did something wrong...

Give me a sec, CI will temporarily complain about the broken `win-fp128.c` test.

https://github.com/llvm/llvm-project/pull/201999