[llvm] Allow folding icmp eq (add X, C2), C when there is more than one-use when we can compute the range (PR #144566)

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AZero13 wrote:

But in all honesty, I think your solution of what we have now is good for now. I will work on a proper solution. but the side effects of your solution are not that bad. at worst they may result in AArch64 having an extra cmp because it won't emit branch-if-zero instructions sometimes but I will just address those separately since I feel like the codegen lowering should address this anyway. 

https://github.com/llvm/llvm-project/pull/144566