[llvm] [AArch64] Add flag setting instructions to scheduling model. (PR #96880)

[via llvm-commits]

rin-arm wrote:

> Bit of nit, but I don't see test changes for ADC, SBC, and BIC?

ADC and SBC had existing tests that were not influenced by this change, as both were already defined. It looks like BIC was also defined already so I removed it from the patch. 

https://github.com/llvm/llvm-project/pull/96880