[llvm] [MachineBasicBlock] Don't split loop header successor if the terminator is unanalyzable (PR #170146)

[Artem Belevich via llvm-commits]

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@@ -0,0 +1,73 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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Artem-B wrote:

OK.

https://github.com/llvm/llvm-project/pull/170146