[llvm] [MCA] Update NZCV flag-setting instructions' throughput for Neoverse N2 (PR #174740)

[Asher Dobrescu via llvm-commits]

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@@ -679,9 +682,13 @@ def N2Write_Arith : SchedWriteVariant<[
                       SchedVar<IsCheapLSL,  [N2Write_1c_1I]>,
                       SchedVar<NoSchedPred, [N2Write_2c_1M]>]>;
 
+def N2Write_ArithF : SchedWriteVariant<[
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Asher8118 wrote:

There is no F pipe in the N2 model. You might be able to get on using `N2Write_Logical` instead and remove this. If not, you can keep it in, but rename it to `N2Write_ArithI`.

https://github.com/llvm/llvm-project/pull/174740