[clang] [lldb] [HLSL] Implement intangible AST type (PR #97362)

[Justin Bogner via cfe-commits]

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@@ -115,6 +116,18 @@ GlobalVariable *replaceBuffer(CGHLSLRuntime::Buffer &Buf) {
 
 } // namespace
 
+llvm::Type *CGHLSLRuntime::convertHLSLSpecificType(const Type *T) {
+  assert(T->isHLSLSpecificType() && "Not an HLSL specific type!");
+
+  // Check if the target has a specific translation for this type first.
+  if (llvm::Type *TargetTy = CGM.getTargetCodeGenInfo().getHLSLType(CGM, T))
+    return TargetTy;
+
+  // TODO: What do we actually want to do generically here? OpenCL uses a
+  // pointer in a particular address space.
+  llvm_unreachable("Generic handling of HLSL types is not implemented yet");
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bogner wrote:

For DirectX and SPIR-V we'll implement `getHLSLType` and this should really be unreachable, but we may want to do something generic in the future if/when we want to generate code for GPU or CPU targets directly generically. Something like the OpenCL approach mentioned in the comment might make sense in that case.

https://github.com/llvm/llvm-project/pull/97362