[llvm] [DirectX] Add Range Overlap validation (PR #152229)

[Justin Bogner via llvm-commits]

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@@ -0,0 +1,28 @@
+; RUN: opt -S -passes='dxil-post-optimization-validation' -mtriple=dxil-pc-shadermodel6.6-compute %s 
+; expected-no-diagnostics
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bogner wrote:

The `expected-no-diagnostics` syntax is for `clang -verify`. Might be clearer to just write it out in a sentence like "We have a valid root signature, this should compile successfully"

https://github.com/llvm/llvm-project/pull/152229