[llvm] [InstCombine] Fold mul (lshr exact (X, N)), 2^N + 1 -> add (X , lshr exact (X, N)) (PR #95042)

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goldsteinn wrote:

> > > Okay so if the IR just repeats I guess I can remove one use but what if there's frozen involved @goldsteinn
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> > 
> > > 
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> > > Then it should be one use no?
> > 
> > 
> > Im not sure what you are asking.
> 
> See:


As a general rule, don't create more instructions. So in that case, req oneuse.

https://github.com/llvm/llvm-project/pull/95042