[llvm] [AMDGPU] Add llvm.amdgcn.dead intrinsic (PR #123190)

[Matt Arsenault via llvm-commits]

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@@ -362,6 +362,8 @@ def : SourceOfDivergence<int_amdgcn_inverse_ballot>;
 foreach intr = AMDGPUImageDimAtomicIntrinsics in
 def : SourceOfDivergence<intr>;
 
+def : SourceOfDivergence<int_amdgcn_dead>;
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arsenm wrote:

Needs test in test/Analysis/UniformityAnalysis 

https://github.com/llvm/llvm-project/pull/123190