[clang] [Sema] Fast-path simple plain auto deduction in DeduceAutoType (PR #188196)

[Younan Zhang via cfe-commits]

https://github.com/zyn0217 commented:

Did you run check-clang? I would expect there are lot of test failures regarding dependent contexts.

Also in case any AI agent is involved, please read the AI policy before we move forward. Thanks. https://llvm.org/docs/AIToolPolicy.html

https://github.com/llvm/llvm-project/pull/188196