[clang] [llvm] [ABI] Add IndirectAliased kind to abi::ArgInfo (PR #225005)

[Steffen Larsen via llvm-commits]

https://github.com/steffenlarsen commented:

What is the use-case for this distinction? Do you have a follow-up patch that shows it in-use?

https://github.com/llvm/llvm-project/pull/225005