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

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

In D120648#3374242 <https://reviews.llvm.org/D120648#3374242>, @Chenbing.Zheng wrote:

> Ping

We need test cases that are targetted specifically at the change being made. If we add a RISCV DAGCombine for (bitreverse (bswap X)) -> brev8 pre-type legalization, then this code change will become untested.


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https://reviews.llvm.org/D120648