[llvm] [InstCombine] Fold X * (2^N + 1) >> N -> X + X >> N, or directly to X if X >> N is 0 (PR #90295)

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Mon May 20 19:46:06 PDT 2024

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AtariDreams wrote:

@dtcxzyw Can we please benchmark this one more time?

https://github.com/llvm/llvm-project/pull/90295

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