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

[Younan Zhang via cfe-commits]

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@@ -183,6 +183,9 @@ Non-comprehensive list of changes in this release
 
 - Added header ``endian.h`` which contains byte order helpers specified in POSIX
 
+- Improved the performance of ``auto`` deduction by adding a fast path
+  for simple cases, including ``auto``, ``const auto``, and ``auto*``. (#GH186274)
+  
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zyn0217 wrote:

I think you should move it to section `Improvements`

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