[llvm] [RegAlloc] Avoid split past block-prologue interference (PR #209704)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,107 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 3
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arsenm wrote:

Old version 

https://github.com/llvm/llvm-project/pull/209704