[clang] [clang]: support std::meta::info for primitive types (PR #190356)

[Daniel M. Katz via cfe-commits]

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@@ -6158,6 +6085,9 @@ void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
   if (getLangOpts().OpenCL && ASTTy->isSamplerT())
     return;
 
+  if (getLangOpts().Reflection && ASTTy->isMetaInfoType())
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katzdm wrote:

I think that emitting a zeroed-out constant, and dealing with the consteval-only aspect later, would be quite reasonable. If we can give a warning, all the better.

https://github.com/llvm/llvm-project/pull/190356