[llvm] [InstCombine] Added optimisation for trunc (Negated Pow2 >> x) to i1 (PR #157998)

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Wed Sep 10 23:02:06 PDT 2025

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kper wrote:

@dtcxzyw can you run the benchmark to see whether it has some real world improvements?

https://github.com/llvm/llvm-project/pull/157998

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