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

[Justin Bogner via llvm-commits]

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@@ -945,6 +946,7 @@ class DXILOpLoweringLegacy : public ModulePass {
     AU.addPreserved<DXILResourceWrapperPass>();
     AU.addPreserved<DXILMetadataAnalysisWrapperPass>();
     AU.addPreserved<ShaderFlagsAnalysisWrapper>();
+    AU.addPreserved<RootSignatureAnalysisWrapper>();
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bogner wrote:

We'll need to preserve the root signature analysis in the new-PM version of the pass as well (that is, in `DXILOpLowering::run`)

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