[llvm] [CodeGen][NewPM] Split `MachineDominatorTree` into a concrete analysis result (PR #94571)

[via llvm-commits]

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@@ -136,15 +144,19 @@ void MachineDominatorTree::applySplitCriticalEdges() const {
 
   // Now, update DT with the collected dominance properties info.
   Idx = 0;
+  dbgs() << "critical Edge to split: " << CriticalEdgesToSplit.size();
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paperchalice wrote:

Oops, debug code to resolve test failure due to empty dominator tree...

https://github.com/llvm/llvm-project/pull/94571