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Commit f8a574bf authored by Nicolas Abram Lujan's avatar Nicolas Abram Lujan Committed by Sanjay Patel
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[InstCombine] C0 >> (X - C1) --> (C0 << C1) >> X 

With the right pre-conditions, we can fold the offset
into the shifted constant:
https://alive2.llvm.org/ce/z/drMRBU
https://alive2.llvm.org/ce/z/cUQv-_

Fixes #55016

Differential Revision: https://reviews.llvm.org/D124369
parent c2614b31
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