[clang] [clang][AMDGPU] Clean-up handling of named barrier type (PR #207687)

[Matt Arsenault via cfe-commits]

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@@ -6171,6 +6171,12 @@ LangAS CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D) {
 
   if (LangOpts.CUDA && LangOpts.CUDAIsDevice) {
     if (D) {
+      // TOOD: Forbid type on struct fields
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arsenm wrote:

The title says it is forbidden?

https://github.com/llvm/llvm-project/pull/207687