[clang] [llvm] [DirectX] Add DirectXTargetCodeGenInfo (PR #104856)

[Damyan Pepper via cfe-commits]

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@@ -879,6 +879,10 @@ static TargetTypeInfo getTargetTypeInfo(const TargetExtType *Ty) {
         ScalableVectorType::get(Type::getInt8Ty(C), TotalNumElts));
   }
 
+  // DirectX intangible types
+  if (Name.starts_with("dx."))
+    return TargetTypeInfo(PointerType::get(C, 0), TargetExtType::CanBeGlobal);
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damyanp wrote:

What does the `CanBeGlobal` flag do? I notice that `spirv.` also gets `HasZeroInit`. Are we sure we don't need that here as well?

https://github.com/llvm/llvm-project/pull/104856