[clang] [clang] Add typed variants for C23 stdbit.h builtins (PR #192718)

[Eli Friedman via cfe-commits]

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@@ -3884,6 +3899,61 @@ Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID,
   case Builtin::BIstdc_count_zeros:
   case Builtin::BIstdc_count_ones:
   case Builtin::BIstdc_bit_width:
+  case Builtin::BIstdc_leading_zeros_uc:
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efriedma-quic wrote:

Does BuiltinStdCBuiltin actually generate any useful diagnostics for the typed builtins?  Unlike the generic builtins, we know the signature, so we've already done regular type-checking at this point.

https://github.com/llvm/llvm-project/pull/192718