[clang] [Clang][C++23] Core language changes from P1467R9 extended floating-point types and standard names. (PR #78503)

[via cfe-commits]

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@@ -4446,6 +4455,73 @@ CompareStandardConversionSequences(Sema &S, SourceLocation Loc,
                ? ImplicitConversionSequence::Better
                : ImplicitConversionSequence::Worse;
 
+  // C++23 12.2.4.3p4:
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cor3ntin wrote:

Can you add the stable label?

https://github.com/llvm/llvm-project/pull/78503