[llvm] [MC] Add -reservation-station-scale-factor option (PR #195638)

[Tomer Shafir via llvm-commits]

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tomershafir wrote:

I agree. I think we may wanna extend this approach and scale iff both original buffer size and scaled one represent OOO cores, forming an operator that is "closed" on the set of strictly OOO models.

https://github.com/llvm/llvm-project/pull/195638