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

[Chenbing.Zheng via Phabricator via llvm-commits]

Chenbing.Zheng updated this revision to Diff 414786.
Chenbing.Zheng added a comment.

rebase precommit tests D121504 <https://reviews.llvm.org/D121504>


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120648/new/

https://reviews.llvm.org/D120648

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/RISCV/bswap-bitreverse.ll
  llvm/test/CodeGen/RISCV/bswap-srli-bswap.ll
  llvm/test/CodeGen/X86/combine-bswap.ll

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