[clang] [llvm] [HLSL] Implement explicit layout for default constant buffer ($Globals) (PR #128991)

[Alex Sepkowski via cfe-commits]

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@@ -174,21 +176,45 @@ createBufferHandleType(const HLSLBufferDecl *BufDecl) {
   return cast<HLSLAttributedResourceType>(QT.getTypePtr());
 }
 
+// Iterates over all declarations in the HLSL buffer and based on the
+// packoffset or register(c#) annotations it fills outs the Layout
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alsepkow wrote:

Found it 🥳
[dx-graphics-hlsl-variable-register](https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-variable-register )

https://github.com/llvm/llvm-project/pull/128991