[clang] [CIR] Upstream a batch of passing tests from CIR-Incubator (PR #157333)

[Burhan Söğüt via cfe-commits]

bursot wrote:

> I added suggestions for two different patterns with the correct code. Please check the same pattern, and feel free to put any pattern that it's confusing so we can discuss it

Please could you look the last commits. Is those true.

https://github.com/llvm/llvm-project/pull/157333