[llvm] [DXIL][Doc] Update specification of to use TableGen list instead of dag (PR #99055)

[S. Bharadwaj Yadavalli via llvm-commits]

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@@ -172,112 +177,257 @@ Shader Model version is represented as follows:
      int Minor = minor;
    }
 
-   // Valid Shader model version records
 
-   // Definition of Shader Model 6.0 - 6.8 and DXIL Version 1.0 - 1.8
+Concrete representations of valid DXIL versions are defined as follows:
+
+.. code-block::
+
+   // Definition of DXIL Version 1.0 - 1.8
    foreach i = 0...8 in {
-     def SM6_#i : Version<6, i>;
-     def DX1_#i : Version<1, i>;
+     def DXIL1_#i : Version<1, i>;
    }
 
-A shader model version predicate class is defined as
+Shader Stage Specification
+==========================
+
+Various shader stages such as ``compute``, ``pixel``, ``vertex``, etc., are represented
+as follows
 
 .. code-block::
 
-   class SMVersion<Version ver> : Pred {
-     Version SMVersion = ver;
-   }
+   // Shader stages
+   class ShaderStage;
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bharadwajy wrote:

> Should this be `DXILShaderStage` for consistency? I notice we have `DXILAttribute` below.

Renamed.

https://github.com/llvm/llvm-project/pull/99055