[PATCH] D83617: [PowerPC] Fix combineVectorShuffle regression after D77448

[Fangrui Song via Phabricator via llvm-commits]

MaskRay created this revision.
MaskRay added reviewers: PowerPC, hfinkel, nemanjai, RolandF.
Herald added subscribers: llvm-commits, shchenz, kbarton, hiraditya.
Herald added a project: LLVM.

Commit 1fed131660b2 <https://reviews.llvm.org/rG1fed131660b2c5d3ea7007e273a7a5da80699445> assumed that NewShuffle (shuffle vector
canonicalization result) will always be ShuffleVectorSDNode, which may
be false.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83617

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

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