[llvm] [NFC] Refactoring DXContainerYaml Root Parameter representation (PR #138318)

[Finn Plummer via llvm-commits]

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@@ -112,98 +113,17 @@ struct DescriptorTableYaml {
   SmallVector<DescriptorRangeYaml> Ranges;
 };
 
+using ParameterData =
+    std::variant<RootConstantsYaml, RootDescriptorYaml, DescriptorTableYaml>;
+
 struct RootParameterYamlDesc {
   uint32_t Type;
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inbelic wrote:

Ah, I see, this maps to a `RootParamterHeader`

https://github.com/llvm/llvm-project/pull/138318