We canonicalize rotate-right -> rotate-left in other places. Makes
sense to do so here as well.
Proof: https://alive2.llvm.org/ce/z/HL3TpK
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Differential D152349
[InstCombine] Canonicalize (icmp eq/ne X, rotate(X)) to always use rotate-left goldstein.w.n on Jun 7 2023, 1:15 AM. Authored by
Details We canonicalize rotate-right -> rotate-left in other places. Makes
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