[llvm] [SPARC] Mark branches as being expensive in early Niagara CPUs (PR #166489)

[via llvm-commits]

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@@ -0,0 +1,33 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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koachan wrote:

Done~

https://github.com/llvm/llvm-project/pull/166489