[llvm] [LowerSwitch] Don't let pass manager handle the dependency (PR #68662)

[via llvm-commits]

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@@ -192,6 +191,9 @@ BasicBlock *AMDGPUUnifyDivergentExitNodesImpl::unifyReturnBlockSet(
 bool AMDGPUUnifyDivergentExitNodesImpl::run(Function &F, DominatorTree *DT,
                                             const PostDominatorTree &PDT,
                                             const UniformityInfo &UA) {
+  for (auto &BB : F)
+    assert(hasOnlySimpleTerminator(&BB));
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ruiling wrote:

Thanks for the suggestion, but I think there might be also other unsupported terminator goes here, so I just add a message "unsupported block terminator".

https://github.com/llvm/llvm-project/pull/68662