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This patch simplifies the pattern `icmp X and/or C1, X and/or C2` when one constant mask is the subset of the other. If `C1 & C2 == C1`, `A = X and/or C1`, `B = X and/or C2`, we can do the following folds: `icmp ule A, B -> true` `icmp ugt A, B -> false` We can apply similar folds for signed predicates when `C1` and `C2` are the same sign: `icmp sle A, B -> true` `icmp sgt A, B -> false` Alive2: https://alive2.llvm.org/ce/z/Q4ekP5 Fixes #65833.
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