[llvm] [DXIL] Model DXIL Class and Shader Model association of DXIL Ops in DXIL.td (PR #87803)

[S. Bharadwaj Yadavalli via llvm-commits]

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@@ -13,331 +13,200 @@
 
 include "llvm/IR/Intrinsics.td"
 
-class DXILOpClass;
+// Abstract class to demarcate minimum Shader model version required
+// to support DXIL Op
+class DXILShaderModel<int major, int minor> {
+  int MajorAndMinor = !add(!mul(major, 10), minor);
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bharadwajy wrote:

> Do we have precedent for this? What would happen if we have SM 6.10 and SM 7.0 with this scheme?

Good point. I do not know of a precedent - but can change the computation to `!add(!mul(major, 100), minor)` to take that into consideration.

https://github.com/llvm/llvm-project/pull/87803