[all-commits] [llvm/llvm-project] 6f2bee: [DAG] canCreateUndefOrPoison - add freeze(bswap(x)...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6f2bee667ad9244be65193892961d5d1eed24551
      https://github.com/llvm/llvm-project/commit/6f2bee667ad9244be65193892961d5d1eed24551
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-08-08 (Mon, 08 Aug 2022)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/test/CodeGen/X86/freeze-unary.ll

  Log Message:
  -----------
  [DAG] canCreateUndefOrPoison - add freeze(bswap(x)) -> bswap(freeze(x)) and freeze(bitreverse(x)) -> bitreverse(freeze(x)) support

Both are guaranteed not to create undef/poison