[clang] [Clang] Bypass TAD during overload resolution if a perfect match exists (PR #136018)

[via cfe-commits]

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@@ -96,6 +96,12 @@ C++ Language Changes
       asm((std::string_view("nop")) ::: (std::string_view("memory")));
     }
 
+- Clang now implements the changes to overload resolution proposed by section 1 and 2 of
+  `P3606 <https://wg21.link/P3606R0>`_. If a non-template candidate exists in an overload set that is
+  a perfect match (all conversion sequences are identity conversions) template candiates are not instantiated.
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h-vetinari wrote:

```suggestion
  a perfect match (all conversion sequences are identity conversions) template candidates are not instantiated.
```

https://github.com/llvm/llvm-project/pull/136018