[llvm] [AMDGPU] Do not preserve UniformityInfo (PR #76696)

[Sameer Sahasrabuddhe via llvm-commits]

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@@ -85,7 +85,6 @@ class AMDGPURewriteUndefForPHILegacy : public FunctionPass {
     AU.addRequired<DominatorTreeWrapperPass>();
 
     AU.addPreserved<DominatorTreeWrapperPass>();
-    AU.addPreserved<UniformityInfoWrapperPass>();
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ssahasra wrote:

What would be the value of such a comment tucked away in some pass? Why only these specific passes? Why not others? We are just returning to the original state that we don't really know how to preserve UniformityAnalysis in general.

https://github.com/llvm/llvm-project/pull/76696