[llvm] [UnreachableBlockElim] Report changes from block renumbering (PR #215051)

[Aiden Grossman via llvm-commits]

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@@ -0,0 +1,58 @@
+# RUN: llc -enable-new-pm -x mir -filetype=null %s \
+# RUN:     -passes='function(machine-function(early-tailduplication,print<slot-indexes>))' \
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boomanaiden154 wrote:

We should be able to drop the explicit nesting here given all the passes are MachineFunction passes.

https://github.com/llvm/llvm-project/pull/215051