[clang] [HLSL][DirectX] Add the Qdx-rootsignature-strip driver option (PR #154454)

[Justin Bogner via cfe-commits]

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@@ -479,6 +479,9 @@ CODEGENOPT(StaticClosure, 1, 0, Benign)
 /// Assume that UAVs/SRVs may alias
 CODEGENOPT(ResMayAlias, 1, 0, Benign)
 
+/// Omit the root signature from produced DXContainer
+CODEGENOPT(HLSLRootSigStrip, 1, 0, Benign)
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bogner wrote:

Do we need this anymore? I don't see it being used, and I would think that making this a separate tool's job would make this unnecessary.

https://github.com/llvm/llvm-project/pull/154454