[clang] [llvm] [HLSL] Update Frontend to support version 1.2 of root signature (PR #160616)

[Justin Bogner via llvm-commits]

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@@ -73,6 +78,9 @@
 // CHECK-SAME:   s1, filter = Anisotropic, addressU = Wrap, addressV = Wrap, addressW = Wrap,
 // CHECK-SAME:   mipLODBias = 0.000000e+00, maxAnisotropy = 16, comparisonFunc = LessEqual,
 // CHECK-SAME:   borderColor = OpaqueWhite, minLOD = 0.000000e+00, maxLOD = 3.402823e+38, space = 0, visibility = All
+// CHECK-V1_0-SAME:  flags = None
+// CHECK-V1_1-SAME:  flags = None
+// CHECK-V1_2-SAME:  flags = None
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bogner wrote:

These are all identical, so I think we can just have one `CHECK-SAME:` here

https://github.com/llvm/llvm-project/pull/160616