[clang] [libcxx] [Clang] Support atomic operations on _BitInt(N) (PR #204815)

[Erich Keane via cfe-commits]

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@@ -10412,8 +10412,6 @@ QualType Sema::BuildAtomicType(QualType T, SourceLocation Loc) {
     else if (!T.isTriviallyCopyableType(Context) && getLangOpts().CPlusPlus)
       // Some other non-trivially-copyable type (probably a C++ class)
       DisallowedKind = 7;
-    else if (T->isBitIntType())
-      DisallowedKind = 8;
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erichkeane wrote:

We should take this out of the list for the diagnostic (along with moving the one below up to 8).

https://github.com/llvm/llvm-project/pull/204815