[llvm] [AArch64] Add C1-Nano scheduling model (PR #182316)

[via llvm-commits]

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@@ -0,0 +1,3874 @@
+# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
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walkerkd wrote:

Done

https://github.com/llvm/llvm-project/pull/182316