[all-commits] [llvm/llvm-project] 1b1539: [PowerPC] Do not RAUW combined nodes in VECTOR_SHU...

[Nemanja Ivanovic via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1b1539712e1ee30c02ed20493682fc05d52391c0
      https://github.com/llvm/llvm-project/commit/1b1539712e1ee30c02ed20493682fc05d52391c0
  Author: Nemanja Ivanovic <nemanja.i.ibm at gmail.com>
  Date:   2020-07-06 (Mon, 06 Jul 2020)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/test/CodeGen/PowerPC/canonical-merge-shuffles.ll

  Log Message:
  -----------
  [PowerPC] Do not RAUW combined nodes in VECTOR_SHUFFLE legalization

When legalizing shuffles, we make an attempt to combine it into
a PPC specific canonical form that avoids a need for a swap. If the
combine is successful, we RAUW the node and the custom legalization
replaces the now dead node instead of the one it should replace.
Remove that erroneous call to RAUW.