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[OptimizeInstructions] Optimize comparisons of a shifted value to a constant #5069

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[OptimizeInstructions] Optimize comparisons of a shifted value to a constant #5069

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@kripken kripken commented Sep 21, 2022

Handles #5008 (comment)
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kripken commented Sep 22, 2022

This looks correct, but is quite complex, and though it was a top superoptimizer suggestion I see little benefit. So I am not sure it is worth it. Leaving as draft for now.
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