[all-commits] [llvm/llvm-project] c722b3: [InstCombine] recognizeBSwapOrBitReverseIdiom - me...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c722b3259690d3aad20f31d0ffe6c12b1416bccc
      https://github.com/llvm/llvm-project/commit/c722b3259690d3aad20f31d0ffe6c12b1416bccc
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-09-30 (Wed, 30 Sep 2020)

  Changed paths:
    M llvm/lib/Transforms/Utils/Local.cpp

  Log Message:
  -----------
  [InstCombine] recognizeBSwapOrBitReverseIdiom - merge the regular/trunc+zext paths. NFCI.

There doesn't seem to be any good reason for having a separate path for when we bswap/bitreverse at a smaller size than the destination size - so merge these to make the instruction generation a lot clearer.