[CIR] Backport fixsing ShuffleDynamicOp maskbits logic #1649
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terapines-osc-cir
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Sep 2, 2025
Backport the calculation of maskbits in the lowering from `N - 1` to `NextPowerOf2(numElements - 1) - 1`, similar to Clang CG. Backport from [#141411](llvm/llvm-project#141411)
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Backport the calculation of maskbits in the lowering from
N - 1toNextPowerOf2(numElements - 1) - 1, similar to Clang CG.Backport from #141411