[PATCH] D120648: [RISCV] DAGcombine fold (bswap(srl (bswap c), x)) -> (shl c, x)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

I think you need to confirm that the shift amount is a multiple of 8 ? https://alive2.llvm.org/ce/z/5DdJRS


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